Most Florida DUI cases turn on two questions: was the person in control of the vehicle, and can the State prove impairment with evidence that holds up in court. I taught officers at the police academy before I spent more than 25 years in Hillsborough County courtrooms, and I am a member of the National College for DUI Defense. As founder of The Brancato Law Firm, P.A., a Tampa criminal defense firm, I built our DUI practice around those two questions, and our attorneys test the stop, the impairment evidence, and the breath or blood result in every case.

What is the legal definition of DUI in Florida?

Florida defines DUI in section 316.193, Florida Statutes. A person commits DUI by driving or being in actual physical control of a vehicle in Florida while one of three conditions is true. The statute gives the State three separate theories, and prosecutors in Hillsborough County often charge more than one in the same case.

The impairment theory needs no test number at all. The two alcohol-level theories need a valid test, and our attorneys at The Brancato Law Firm examine how and when that test was taken, because a number obtained the wrong way can be kept from the jury.

What does “normal faculties” mean in a Florida DUI case?

Normal faculties are the everyday abilities a sober person uses to drive. Section 316.1934, Florida Statutes, says they include “the ability to see, hear, walk, talk, judge distances, drive an automobile, make judgments, act in emergencies,” and to perform the many mental and physical acts of daily life. Officers try to show impairment through driving pattern, speech, balance, and field sobriety exercises, and our firm compares each claim in the report against the body camera video.

The same statute sets presumptions that apply when the State has an alcohol test result:

A result between 0.05 and 0.08 does not end a case for either side. The State can still try to prove impairment with the officer’s observations, and The Brancato Law Firm can use the same number to show the driver was close to the line the presumption draws.

Can you get a DUI in Florida if you were not driving?

Yes. Florida’s DUI law covers anyone in “actual physical control” of a vehicle, so a person sitting behind the wheel of a parked car can be charged. The standard jury instruction defines it this way: the person must be physically in or on the vehicle and have the capability to operate it, whether or not the person is actually operating it at the time.

The Second District Court of Appeal, which hears appeals from Hillsborough, Pinellas, and Pasco County courts, applied that definition in State v. Fitzgerald, 63 So. 3d 75 (Fla. 2d DCA 2011). An officer in Largo, in Pinellas County, found a car stopped in an intersection around midnight with its lights on and the engine off. Ms. Fitzgerald was in the driver’s seat and readily produced the keys when asked. The trial court dismissed her felony DUI charge, but the appellate court reversed, holding that sitting in the driver’s seat with ready access to the keys made a prima facie showing that she could have started the car and driven away. The court explained that capability means “practical ability.”

The lesson from Fitzgerald is that losing a motion to dismiss does not end an actual physical control defense. That ruling only meant the case could go forward; the jury still decides whether the State proved control beyond a reasonable doubt. Our attorneys build that defense from the details: where the keys were, whether the engine or lights were on, whether the car could run, and who else was present.

Can you get a DUI for drugs or medication in Florida?

Yes. The impairment theory in section 316.193 covers any substance controlled under chapter 893, which includes many prescription pain, anxiety, sleep, and ADHD medications, along with illegal drugs. Florida has no per se limit for drugs the way it does for alcohol, so the State must prove the drug actually impaired the driver’s normal faculties. Our guides on DUI for prescription drugs in Florida and marijuana DUI in Florida explain how those cases are proved and defended.

Is DUI a misdemeanor or a felony in Florida?

Most DUIs are misdemeanors, but four situations make DUI a felony under section 316.193. The table shows how the charge is classified; our separate guide to Florida DUI penalties covers fines, jail, license revocation, and ignition interlock terms in detail.

A blood- or breath-alcohol level of 0.15 or higher, or having a passenger under 18 in the vehicle, raises the fines and the maximum jail time even on a first offense. Our homicide defense attorneys handle DUI manslaughter cases.

How common are impaired-driving crashes in Florida?

Impaired driving played a role in 969 traffic deaths in Florida in 2023, or 28.71% of the 3,375 people killed on Florida roads that year, according to the Florida Department of Highway Safety and Motor Vehicles’ Impaired Driving Annual Report (January 2025). The same report counts 6,026 impaired-driving crashes statewide in 2023, about 1.5% of all crashes.

National research shows how often drugs and alcohol appear together in serious crashes. In a 2022 study for the National Highway Traffic Safety Administration, researchers tested 7,279 seriously or fatally injured road users at seven Level 1 trauma centers, including one in Jacksonville, and found that 55.8% tested positive for alcohol or at least one other drug, as reported in Alcohol and Drug Prevalence Among Seriously or Fatally Injured Road Users (DOT HS 813 400). A positive test shows a substance was present. It does not prove the person was impaired, and that gap is where many drug DUI defenses begin.

What happens to your license after a DUI arrest in Florida?

A DUI arrest starts an administrative license suspension that runs separately from the criminal case. The driver has 10 days from the notice of suspension to request a review hearing or apply for a restricted license. Our guide to what happens after a DUI arrest in Hillsborough County walks through the license deadline, booking, first appearance, and the court dates that follow.

Refusing a breath or urine test carries its own consequences. Under section 316.1939, Florida Statutes, as amended by Trenton’s Law effective October 1, 2025, a first refusal after a lawful DUI arrest is a second-degree misdemeanor, and a later refusal is a first-degree misdemeanor, in addition to the license suspension.

Where do Florida DUI cases break down?

DUI cases break down where the State’s evidence depends on a step the officer had to perform correctly. These are the five points our attorneys test first:

1. The stop. If the officer had no lawful reason to stop the car, a motion to suppress can remove everything that followed, including the test result.
2. Actual physical control. When the car was parked, we examine the keys, the engine, and whether the person could practically operate the vehicle.
3. Field sobriety exercises. Footwear, injuries, weight, road surface, and nerves all affect performance, and the video often shows a different picture than the report.
4. The breath or blood test. Florida’s approved breath instrument is the Intoxilyzer 8000, and its maintenance records and the operator’s procedure must meet the state’s rules.
5. The impairment evidence. Without a valid test, the State must prove impairment from observations alone, and we hold it to that burden.

In Hillsborough County, our attorneys also screen every first-time client for the State Attorney’s Reducing Impaired Driving Recidivism (RIDR) program, which can end an eligible misdemeanor DUI with a plea to reckless driving instead of a DUI conviction. We explain the program’s conditions before a client decides. Our Hillsborough County criminal defense page covers how cases move through the 13th Judicial Circuit, and our guide on how to fight a DUI charge in Hillsborough County goes deeper into each defense. For a full description of our DUI work, see our Tampa DUI lawyer page.

What results has our firm obtained in DUI cases?

Past results do not guarantee future outcomes.

Frequently asked questions about DUI in Florida

Can you get a DUI in Florida for sleeping in your car?

Yes, if you were in the driver’s seat with the practical ability to start and move the car. The Brancato Law Firm defends these cases by examining the key location, the engine, and the car’s condition, the same facts the court weighed in State v. Fitzgerald.

Can you be charged with DUI in Florida with a BAC under 0.08?

Yes. A result above 0.05 but below 0.08 creates no presumption either way under section 316.1934, so the State may still try to prove impairment from the officer’s observations. Our attorneys at The Brancato Law Firm use a low number to show the jury how thin that proof is.

Can DUI charges be dropped in Florida?

Yes. DUI charges can be dropped or reduced when the stop was unlawful, the test result is excluded, or the impairment evidence is weak, and many first-time cases in Hillsborough County resolve through the RIDR program. The Brancato Law Firm pursues dismissal first and negotiates reductions to reckless driving when the evidence supports it, as described on our DUI defense in Tampa page.

Is refusing a breath test a crime in Florida?

Yes, since October 1, 2025. A first refusal after a lawful DUI arrest and the required warnings is a second-degree misdemeanor under section 316.1939, and The Brancato Law Firm defends the refusal charge by testing whether the arrest was lawful and whether every warning was given.

Does a DUI arrest suspend my license before I am convicted?

Yes. The officer issues a notice of suspension at the arrest, and the suspension takes effect unless you act within 10 days. The Brancato Law Firm files the review request or the restricted-license application inside that window, as our guide on protecting your license after a DUI arrest explains.

Talk to our attorneys about a Florida DUI charge

Your license deadline started the day of the arrest, and the video and breath records our attorneys need are easiest to secure in the first days. Call The Brancato Law Firm, P.A., founded by Tampa Criminal Defense Attorney Rocky Brancato, at (813) 727-7159. You can call us at any hour. Our firm has Spanish-speaking staff, and attorney Jean-Luc Adrien speaks Spanish, Haitian Creole, and French. For more about our defense strategies, visit our DUI defense page.

The Brancato Law Firm, P.A.
620 E. Twiggs Street, Suite 205, Tampa, FL 33602
(813) 727-7159
Serving Hillsborough, Pinellas, and Pasco Counties

The Brancato Law Firm, P.A. is a Tampa-based criminal defense practice. We are not affiliated with any other Brancato-named law firms.

In a DUI trial, jurors can watch the roadside video for themselves, and what they see often carries more weight than the officer’s report. I taught at the police academy before I founded The Brancato Law Firm, P.A., a Tampa criminal defense firm, so I know how officers are trained to investigate and where shortcuts show up on video. I am a member of the National College for DUI Defense (NCDD) and the DUI Defense Lawyers Association (DDLA), and I have tried more than 150 jury trials to verdict in more than 25 years in Hillsborough County courtrooms. Our attorneys hold each DUI investigation to the procedures officers are taught, step by step, and use every gap to pursue suppression, dismissal, a reduction, or a not guilty verdict.

What are the defenses to a DUI charge in Florida?

The main defenses to a Florida DUI charge attack the four things the State needs: a lawful stop, probable cause to arrest, a reliable chemical test, and proof of impairment. Under section 316.193, Florida Statutes, the State must prove the driver’s normal faculties were impaired by alcohol or drugs, or that the driver’s blood or breath alcohol level was 0.08 or higher. Our attorneys review every stage in the same order the officer built the case, because a defect early in the case can remove everything that came after it. You can read more about how our firm handles these cases on our Tampa DUI defense page.

Was the traffic stop legal?

A DUI case can be dismissed if the officer had no lawful reason to stop the car. The Fourth Amendment requires either a traffic violation or a reasonable suspicion, based on specific facts, that the driver was impaired. Florida courts allow an officer to stop a driver whose weaving within a lane suggests impairment, so the real question in most cases is what the driving looked like.

Our attorneys compare the patrol car video, minute by minute, with the reason written in the arrest report. When the video shows a single touch of a lane line, a lawful turn, or driving that never matches the report, we file a motion to suppress. If the judge grants it, the officer’s observations, the test results and the driver’s statements that followed the stop are excluded, and the State usually cannot proceed.

Did the officer have probable cause to arrest you for DUI?

An officer needs probable cause, meaning facts that would lead a reasonable officer to believe the driver was impaired, before making a DUI arrest. Most officers build that probable cause on three standardized field sobriety exercises: the horizontal gaze nystagmus eye test, the walk-and-turn, and the one-leg stand.

The research behind those exercises is narrower than most jurors assume. The National Highway Traffic Safety Administration’s main validation study, Validation of the Standardized Field Sobriety Test Battery at BACs Below 0.10 Percent (1998), tested 297 drivers stopped by seven officers from a single San Diego police alcohol enforcement unit. It reported that the officers’ decisions about whether a driver was above or below 0.08 were accurate in 91 percent of cases, using the scoring procedures they had been trained on. A 1994 study in the peer-reviewed journal Perceptual and Motor Skills showed officers videotapes of 21 sober people. The officers rated significantly more of those sober people as impaired when they watched them perform field sobriety tests than when they watched them do ordinary tasks such as walking normally or reciting an address.

Our attorneys hold officers to their own standard. NHTSA’s accuracy figures assume the exercises were given and scored exactly as officers are trained, so every departure on the video weakens the probable cause. A probable cause challenge that fails at a suppression hearing can still succeed in front of a jury, because the same flaws go to whether the driver was actually impaired. Our post on how to challenge field sobriety tests in Tampa covers the exercises one by one.

Can a breath test be thrown out in Florida?

Yes. A Florida breath result is valid only if the test was performed substantially according to methods approved by the Florida Department of Law Enforcement (FDLE), by an operator with a valid FDLE permit, under section 316.1934, Florida Statutes. FDLE’s rules are in chapter 11D-8 of the Florida Administrative Code. They approve two instruments, the Intoxilyzer 8000 and the newer Intoxilyzer 9000, and they require, among other things:

• an agency inspection of each instrument at least once every calendar month, under rule 11D-8.006;
• at least 20 minutes before the test in which the officer reasonably ensures the driver has not taken anything by mouth or regurgitated, under rule 11D-8.007;
• at least two breath samples taken within 15 minutes of each other, with results within 0.020 of each other, and a third sample when the first two are farther apart, under rule 11D-8.002.

The Second District Court of Appeal, whose decisions bind the trial courts in Hillsborough, Pinellas and Pasco Counties, applied these rules in State v. Kilburn, No. 2D2024-0649 (Fla. 2d DCA Aug. 15, 2025). An FDLE inspector had replaced a leaking breath tube in a Sarasota County Intoxilyzer 8000 that was used in three DUI cases. The court agreed with the trial judge that replacing the tube was a repair, not maintenance, and that FDLE was not then an authorized repair facility. The breath tests from that machine were therefore not in substantial compliance with FDLE’s rules, and the State could not rely on the breath test affidavit and the legal presumptions in section 316.1934 to prove the results. Our firm wrote about that ruling in Intoxilyzer Not Properly Maintained: Florida Court Throws Out Breath Test Results.

Effective July 1, 2026, FDLE amended rule 11D-8.002 to list the Department itself as an authorized repair facility. The repair-facility argument remains available for breath tests taken before that date. For every breath case, old or new, our attorneys obtain the instrument’s inspection, maintenance and repair records, because who worked on the machine, and when, can decide whether the result comes in.

Can police take your blood after a DUI arrest in Florida?

Police generally need a warrant, valid consent, or a true emergency to draw blood in a DUI case. In Missouri v. McNeely, 569 U.S. 141 (2013), the U.S. Supreme Court held that the natural loss of alcohol from the bloodstream does not, by itself, create an emergency that excuses a warrant. In Birchfield v. North Dakota, 579 U.S. 438 (2016), the Court held that police may require a breath test without a warrant after a lawful DUI arrest, but a blood test is more intrusive because it pierces the skin, and a state may not make it a crime to refuse one.

Florida’s implied consent law covers blood in one narrow situation: the driver appears for treatment at a hospital, clinic or ambulance, and a breath or urine test is impractical or impossible, under section 316.1932(1)(c), Florida Statutes. FDLE’s rule 11D-8.012 then requires an alcohol-free antiseptic, a glass tube with a preservative and an anticoagulant, proper labeling and refrigeration, and delivery for analysis within 30 days. A missing step can keep the result out. Our post on whether police can take your blood without a warrant in Florida covers the warrant rules in detail.

When blood was drawn after a crash, charges are often not filed until the lab results come back. That gap is the time for pre-file advocacy, when our attorneys can present facts to the prosecutor before the charging decision is made.

What if your blood alcohol was still rising when you were driving?

A breath or blood test measures alcohol at the time of the test, which can be an hour or more after the driving ended. Alcohol keeps absorbing into the blood for a period after the last drink, so a driver’s level can be lower behind the wheel than at the station. In Miller v. State, 597 So. 2d 767 (Fla. 1991), the Florida Supreme Court held that a test taken within a reasonable time after the stop is admissible even if the State cannot relate the number back to the time of driving. The court treated that gap as a question of weight for the jury, which makes the drinking timeline a trial issue.

Our attorneys build that timeline from receipts, bar tabs, meals, witness statements and the time of the stop. We then work with forensic toxicologists through our forensic science defense practice. Our post on retrograde extrapolation and rising blood alcohol describes a case where that testimony mattered.

What does the video in a DUI case show?

In many DUI cases, the video is the strongest defense evidence. Depending on the agency, a patrol car camera records the driving and the stop, a body camera records the roadside exercises and the arrest, and the breath testing room may record the 20-minute observation period. Our attorneys request every recording and compare it with the report line by line: slurred speech that sounds clear, swaying that never appears, instructions that were rushed or incomplete, and observation periods interrupted by phone calls or paperwork.

In one of our firm’s published results, a jury found a client not guilty of DUI (refusal) and resisting an officer without violence after the defense relied on scene video showing the client was not impaired. Agencies do not keep every recording indefinitely, so our attorneys request them early.

How are drug DUI cases defended in Florida?

Florida has no legal limit for marijuana or other drugs, so in a drug DUI case the State must prove that a controlled or chemical substance impaired the driver’s normal faculties under section 316.193. A positive blood or urine test shows that a substance was present. It does not, by itself, show that the substance impaired the driver at the time of driving.

Many drug DUI cases rest on a drug recognition expert (DRE), an officer trained in a 12-step evaluation that ends with an opinion about which drug category caused the impairment. Our attorneys challenge the DRE’s training records, each step of the protocol, and whether the lab results match the drug category the officer named. Our posts on what a drug recognition expert is in Florida and marijuana DUI charges in Florida go deeper.

Can you beat a DUI refusal charge in Florida?

Yes, because a refusal charge has its own elements, and each one can fail. Since October 1, 2025, a first refusal to take a lawful breath or urine test is a second-degree misdemeanor, and a later refusal is a first-degree misdemeanor, under section 316.1939, Florida Statutes. The State must prove the officer had probable cause, the driver was lawfully arrested for DUI, the driver was told the specific consequences of refusing, and the driver then refused. The crime covers breath and urine tests only, and Birchfield v. North Dakota, 579 U.S. 438 (2016) bars criminal punishment for refusing a blood test.

Refusals are common. In 2022, Florida officers issued 44,001 DUI citations and recorded 14,941 breath test refusals, a refusal rate of about 34 percent, according to Department of Highway Safety and Motor Vehicles figures in a January 2024 Florida Senate Criminal Justice Committee bill analysis. The same analysis cites a 2016 study that put the national refusal rate at 24 percent.

A refusal is also admissible in the DUI case itself, but the law limits how the State can use it. In Osorio v. State, 428 So. 3d 220 (Fla. 3d DCA 2026), the prosecutor told the jury that a sober driver would have blown and “proved innocence beyond a reasonable doubt.” The Third District reversed the DUI conviction because that argument shifted the burden of proof to the defendant. Our attorneys object when the State’s argument crosses that line, and we preserve the issue for appeal. A refusal also brings an administrative license suspension of one year for a first refusal, or 18 months if the license was previously suspended for refusing, under section 322.2615, Florida Statutes.

Can a DUI be reduced to reckless driving in Hillsborough County?

Yes, and when the evidence cannot be suppressed, a reduction to reckless driving is often the realistic goal for a first-time driver. A DUI conviction always counts as a conviction: section 316.656, Florida Statutes bars a Florida court from withholding adjudication for DUI. Reckless driving under section 316.192, Florida Statutes carries up to 90 days in jail and a $25 to $500 fine for a first conviction, and the court can withhold adjudication. When the court believes alcohol or drugs contributed, it must order DUI school and an evaluation, which is why the result is sometimes called a “wet reckless.”

Two limits shape the negotiation. Section 316.656 also bars a judge from accepting a plea to a lesser offense when a breath or blood test shows 0.15 or higher, so in high-reading cases the defense work on the test result itself carries more weight. And in Hillsborough County, the State Attorney’s Office runs its own first-offender track, the Reducing Impaired Driving Recidivism (RIDR) program.

According to the State Attorney’s program sheet, RIDR is limited to first-time misdemeanor DUIs with no minor in the car, no crash, and no reading of 0.20 or higher. Before a disposition date about 60 days after arraignment, the driver completes DUI school, a MADD victim impact panel, community service, and an ignition interlock, alcohol monitor or drug patch. The State then offers a plea to reckless driving with a withhold of adjudication and 12 months of probation. The sheet says one goal is to remove the incentive to refuse a breath test, and it assigns heavier conditions to the level that covers cases with no breath sample: 75 community service hours and six months of monitoring, instead of 50 hours and three months.

Missing RIDR does not end the negotiation. In a published July 2026 result, a client charged with DUI, leaving the scene and refusal did not qualify for RIDR because of the crash. Our firm prepared a mitigation report and treatment plan, and the prosecutor agreed to reduce the case to reckless driving with adjudication withheld.

What are the penalties for a first, second, and third DUI in Florida?

A first DUI in Florida carries up to six months in jail, a $500 to $1,000 fine and a license revocation of 180 days to one year, and the penalties rise with each prior conviction and with a reading of 0.15 or higher. The table below summarizes section 316.193, section 322.28 and section 775.082.

Our attorneys start every case by identifying which of these penalties your record and test result actually put in play. Our post on Florida DUI penalties in Tampa and Hillsborough County covers fourth offenses and other consequences.

Which criminal defense lawyers in Tampa specialize in DUI cases?

Look for a criminal defense lawyer with DUI-specific training, real trial experience, and daily familiarity with the Hillsborough County courts and the State Attorney’s programs. At The Brancato Law Firm, our practice is devoted entirely to criminal defense, from misdemeanors to capital cases, and DUI defense is a core part of it. Our founder is an NCDD and DDLA member and a former police academy instructor, and he served as Chief Operations Officer of the Hillsborough County Public Defender’s Office, overseeing a staff of over 100 attorneys. He is rated AV Preeminent, selected to Super Lawyers, named to the National Trial Lawyers Top 100, and wrote “How to Choose a Major Crimes Attorney – or Any Criminal Defense Attorney for That Matter.”

Our office at 620 E. Twiggs Street is two blocks from the Hillsborough County Courthouse, and we also defend DUI cases in Pinellas County and Pasco County. Clients get updates through a client portal, and we return calls within 24 hours. Our firm has Spanish-speaking staff, and attorney Jean-Luc Adrien speaks Spanish, Haitian Creole, and French.

What should you do in the first 10 days after a DUI arrest in Hillsborough County?

The most urgent step is to challenge the administrative license suspension, because section 322.2615 gives you only 10 days from the notice of suspension to request review. In those 10 days:

1. Talk with a DUI defense lawyer before the review deadline passes.
2. Do not discuss the arrest with anyone except your lawyer, including on social media.
3. Write down what you ate and drank, and when, while you still remember it.
4. Keep receipts and bar tabs, and note the names of anyone who was with you and any businesses near the stop that may have cameras.

Our post on what happens after a DUI arrest in Hillsborough County walks through the full court timeline. Our attorneys can start on the license review and the evidence requests the day you call.

DUI case results from our firm

More results are on our case results page. Past results do not guarantee future outcomes.

Frequently asked questions about fighting a DUI in Hillsborough County

Can a DUI be dropped or reduced in Florida?

Yes, a DUI charge can be dropped when key evidence is suppressed or the State cannot prove impairment, and it can be reduced to reckless driving through negotiation or Hillsborough County’s RIDR program. Our attorneys at The Brancato Law Firm have published results in which DUI charges were reduced to reckless driving, including one in which the client did not qualify for RIDR. A reduction is limited by section 316.656, which bars a plea to a lesser offense when a breath or blood test shows 0.15 or higher.

Do I need a DUI specialist in Tampa?

You need a lawyer with DUI-specific training who tries cases, whatever title the lawyer uses. At The Brancato Law Firm, our founder is a member of the National College for DUI Defense and the DUI Defense Lawyers Association, and our practice is devoted entirely to criminal defense, from misdemeanors to capital cases. That means the team negotiating your DUI is also prepared to try it. See how we approach these cases on our DUI defense team in Tampa page.

How do I choose a DUI defense attorney in Tampa, Florida?

Ask how many DUI cases the lawyer has taken to trial, what DUI-specific training the lawyer has, and who will actually appear in court with you. The Brancato Law Firm answers those questions in a free consultation, and our founder has tried more than 150 jury trials to verdict. Ask, too, how the firm communicates: our clients get updates through a client portal, and we return calls within 24 hours. Our published case results show how DUI cases have actually ended.

I was arrested for DUI in Hillsborough County and need a lawyer. What should I do first?

Call a DUI defense lawyer before the 10-day deadline to challenge your license suspension passes, and do not discuss the arrest with anyone else. The Brancato Law Firm’s office is two blocks from the Hillsborough County Courthouse, and you can call us at any hour at (813) 727-7159. Our post on what happens after a DUI arrest in Hillsborough County explains each court date that follows.

How much does it cost to fight a DUI in Tampa?

The cost of fighting a DUI depends on the evidence, how much investigation the case needs, and whether it goes to trial. The Brancato Law Firm quotes a flat fee that covers the whole case, including trial, based on the facts and complexity of your case, and our fees are neither the most nor the least expensive in Tampa. We ask for at least half up front, with a payment plan for the balance while the case is pending, and consultations are free. A flat fee that includes trial avoids a separate trial fee, which can create a financial incentive to settle before trial preparation; our post on what a criminal defense attorney costs in Tampa explains more.

Can the prosecutor use my breath test refusal against me at trial?

Yes, a refusal is admissible in Florida and the prosecutor may argue it shows consciousness of guilt, but the prosecutor may not argue that you had to prove your innocence by blowing. Our attorneys at The Brancato Law Firm object to that argument and preserve it for appeal. In Osorio v. State, 428 So. 3d 220 (Fla. 3d DCA 2026), a DUI conviction was reversed for exactly that kind of argument.

Talk with our DUI defense team about your case

Most DUI defenses depend on evidence that can disappear and deadlines that run out within days of the arrest: the 10-day window to challenge your license, and recordings that agencies do not keep indefinitely. The Brancato Law Firm, P.A., founded by Tampa Criminal Defense Attorney Rocky Brancato, starts by requesting that evidence and reviewing the stop, the arrest and the test. Call (813) 727-7159 for a free consultation, and call us at any hour. For more about our defense strategies, visit our Tampa DUI Lawyer page.

The Brancato Law Firm, P.A.
620 E. Twiggs Street, Suite 205, Tampa, FL 33602
(813) 727-7159
Serving Hillsborough, Pinellas, and Pasco Counties

The Brancato Law Firm, P.A. is a Tampa-based criminal defense practice. We are not affiliated with any other Brancato-named law firms.

Most refusal cases are decided by what the officer said, in what order, before the driver said no. Body camera audio usually settles it. As founder of The Brancato Law Firm, P.A., a Tampa criminal defense firm, I bring a background that fits these cases: I am a member of the National College for DUI Defense and a former police academy instructor. Our attorneys defend refusal charges and the DUI cases that come with them in Hillsborough, Pinellas, and Pasco Counties.

This guide covers what changed in 2025, what the State must prove, how a refusal is used at trial, and what to do about your license in the first 10 days.

What happens when you refuse a breath test in Florida?

Three separate things happen when you refuse. First, the refusal is admissible in the DUI case under section 316.1932, Florida Statutes, and the prosecutor will argue it shows you knew you would fail. Second, your license is suspended administratively for 1 year, or 18 months if you refused before. Third, the refusal is now its own crime, even on a first refusal.

Florida’s implied consent law is the trade built into every driver license. By driving in Florida, you are deemed to have agreed to an approved breath or urine test after a lawful DUI arrest. The officer must tell you the consequences of refusing before the refusal counts against you. Our attorneys at The Brancato Law Firm start every refusal case by listening to that warning on the video.

Is a first refusal really a crime now?

Yes. Before October 1, 2025, a first refusal carried only the license suspension. The crime applied only to a driver whose license had already been suspended for an earlier refusal. Trenton’s Law, chapter 2025-121, Laws of Florida, changed that. Under the current section 316.1939, Florida Statutes, a first refusal is a second-degree misdemeanor and a second or later refusal is a first-degree misdemeanor.

The jail and fine maximums come from section 775.082, Florida Statutes and section 775.083, Florida Statutes. One detail catches boaters. A prior fine under section 327.35215 for refusing a test after a boating under the influence stop counts as a prior refusal, so a first roadside refusal can be charged as the first-degree misdemeanor.

Is refusing a blood test a crime?

No. The refusal statute covers only breath and urine tests. Florida asks for blood only in limited situations under section 316.1932(1)(c), such as when a driver is at a hospital and a breath or urine test is impractical, and refusing blood brings a license suspension but no criminal charge.

That line follows the Constitution. In Birchfield v. North Dakota, 579 U.S. 438 (2016), the U.S. Supreme Court held that police may require a breath test as a search incident to a lawful DUI arrest, but not a blood test. Florida’s Fifth District applied that rule to our refusal statute in Williams v. State, 210 So. 3d 774 (Fla. 5th DCA 2017), which upheld a breath-refusal conviction. The Brancato Law Firm checks every charging document to confirm the State charged a test the statute actually covers.

What must the State prove to convict you of refusal?

The State must prove five elements under section 316.1939(1), and each one is a place these cases fall apart:

1. Probable cause. The officer had probable cause to believe you were driving or in actual physical control of a vehicle while impaired.
2. A lawful arrest. You were lawfully arrested for DUI before the test was requested.
3. The suspension warning. You were told a refusal would cost your license for 1 year, or 18 months after a prior refusal.
4. The crime warning. You were told that refusing is itself a misdemeanor.
5. A refusal after the warnings. Only after being told all of this did you refuse.

Element 4 is new, and it creates a defense that did not exist before October 2025. An officer who read an outdated implied consent card, one that said refusal was a crime only after a prior suspension, did not give the warning the statute now requires. No Florida appellate court has decided a case on this point yet, so our attorneys raise it by motion and preserve it for appeal.

Element 2 matters at the license hearing too. In Florida Department of Highway Safety & Motor Vehicles v. Hernandez, 74 So. 3d 1070 (Fla. 2011), the Florida Supreme Court held that the department cannot suspend a license for a refusal that was not incident to a lawful arrest. A bad stop can defeat the criminal refusal charge and the suspension with the same evidence.

Do you have the right to talk to a lawyer before deciding?

No. In State v. Busciglio, 976 So. 2d 15 (Fla. 2d DCA 2008), a Hillsborough County case, the Second District held that the officer’s “yes or no” question about taking the breath test is not interrogation, so the right to counsel does not attach to it. The warning in that case was read from a form provided at Central Breath Testing, the Hillsborough County Sheriff’s Office breath testing site.

In practice, this means a driver who says “I want my lawyer first” may be marked as a refusal. Whether that answer was a knowing refusal after proper warnings is still a fact question. In our experience in Hillsborough County cases, the paperwork often hardens around the word “refused” when the video shows a confused driver asking questions. Our attorneys at The Brancato Law Firm make that video the center of the defense.

How is a refusal used at the DUI trial?

The prosecutor can tell the jury you refused and argue that it shows consciousness of guilt. Section 316.1932 makes the refusal admissible. But Florida courts have set limits, and those limits win cases.

The first limit is the warning. In Howitt v. State, 266 So. 3d 219 (Fla. 5th DCA 2019), officers never told the driver any consequence of refusing. The court held the refusal could not be used to show consciousness of guilt and reversed the DUI convictions.

The second limit is the argument. In Osorio v. State, No. 3D24-0483 (Fla. 3d DCA Feb. 4, 2026), the prosecutor told the jury the defendant could have proved his innocence by blowing. The court held that comment shifted the burden of proof and ordered a new trial. Compare Paul v. State, No. 4D2025-0899 (Fla. 4th DCA Sept. 2, 2026), where the Fourth District affirmed because the prosecutor quickly turned to consciousness of guilt and repeatedly reminded the jury of the State’s burden. The lesson for trial is to object to every burden-shifting phrase.

A refusal case also has no breath number. The State’s proof rests on the officer’s observations, the driving pattern, the field exercises, and the video. When the video shows a driver who walks the line cleanly and then declines to trust a machine, the refusal looks like skepticism.

Can a refusal be suppressed?

Sometimes. An unlawful stop, an arrest without probable cause, missing or garbled warnings, and a dispute over whether a refusal happened at all can each keep a refusal out of evidence or defeat the charge.

One argument no longer works. In State v. Repple, 428 So. 3d 59 (Fla. 2025), the Florida Supreme Court held that a city officer who lawfully arrests a driver inside the city may request the breath test at a facility outside the city limits. The Sixth District applied that rule to a refusal in State v. Hart, No. 6D2024-2164 (Fla. 6th DCA May 22, 2026) and reversed a suppression order. Our attorneys focus on the arguments that survive Repple: the stop, the arrest, and the warnings.

How common are breath-test refusals in Florida?

Very common. A National Highway Traffic Safety Administration study, Breath Test Refusal Rates in the United States: 2011 Update, reported that Florida drivers refused 21,966 of 26,777 breath-test requests in 2011, an 82% refusal rate and the highest reported in the nation. NHTSA noted that states record refusals differently, so the figure is best read as a sign of how often the issue comes up.

The stakes on the road are real. NHTSA’s State Alcohol-Impaired-Driving Estimates: 2024 Data counted 769 alcohol-impaired-driving deaths in Florida in 2024, 24% of the state’s 3,138 traffic deaths. On the license side, the Florida Department of Highway Safety and Motor Vehicles Inspector General reported in a 2024 audit of the Bureau of Administrative Reviews that the bureau held 26,052 hearings and reviews statewide from July 2023 through June 2024.

Research also shows a refusal does not end the case. A second NHTSA report, Breath Test Refusals and Their Effect on DWI Prosecutions (2012), found no clear relationship between refusing and the chance of a conviction at its five study sites, but convicted refusers received harsher jail and fine penalties.

Should you refuse the breath test in Florida?

There is no safe general answer anymore. Before Trenton’s Law, a first refusal cost only a suspension. Today it adds a criminal charge, a consciousness-of-guilt argument at trial, and a full year without a license. The State also does not need a breath number to prosecute, because officers document driving, field exercises, and video.

The decision is made fast, usually without a lawyer, and our work starts wherever yours ended. A refusal case is defensible, and so is a case with a breath result. The worst choice is doing nothing with the 10-day license window.

What should you do in the first 10 days after a refusal arrest?

Act on the license first. Under section 322.2615, Florida Statutes, you have 10 days from the notice of suspension to request a formal or informal review, and the temporary permit on your citation expires at midnight on the 10th day. If you miss the window, the suspension simply runs.

Then preserve the evidence. Body camera and dash camera video decide the warning elements, and retention periods are short. Write down what was said and in what order, list any passengers or witnesses, and do not discuss the stop with anyone but your lawyer. Our guide on how to protect your license after a Tampa DUI arrest explains the formal review hearing, the waiver option, and the Tampa hearing office.

Our attorneys handle refusal cases as part of our Tampa DUI lawyer practice, and we often use the formal review hearing to put the officer’s account under oath months before the criminal trial.

Real results in refusal cases

Past results do not guarantee future outcomes. More results are on our case results page.

Frequently asked questions about breath-test refusal in Florida

Can a refusal charge be dropped in Florida?

Yes. A refusal charge can be dropped or dismissed when the arrest was not lawful, the officer left out a required warning, or the evidence does not show a knowing refusal. The Brancato Law Firm reviews the body camera audio against the five elements of section 316.1939 before we talk with the prosecutor.

Does Trenton’s Law apply to a refusal before October 1, 2025?

No. The new first-refusal crime applies only to refusals on or after October 1, 2025. An older refusal still matters, because it supports the 18-month suspension and makes a new refusal a first-degree misdemeanor, and our attorneys at The Brancato Law Firm pull your full driving record to see how it counts.

What if the officer read me an old implied consent card?

Then the State may be missing an element. Since October 2025, section 316.1939 requires proof that you were told refusing is a crime, and an outdated card did not say that for a first refusal. The Brancato Law Firm compares the card and the audio word for word, and you can learn more from our DUI defense attorneys in Tampa.

Can I get a hardship license after refusing a breath test?

Often, yes. A first-time driver may qualify for a business-purposes-only license, either after a 90-day wait if the suspension is upheld at review or sooner through the eligibility review under section 322.271(7), Florida Statutes. Our attorneys at The Brancato Law Firm help clients choose between that route and a formal review hearing within the 10-day window.

Will the jury hear that I refused?

In most cases, yes, because section 316.1932 makes a properly warned refusal admissible. The Brancato Law Firm has won refusal trials by showing the jury the video and explaining the confusion, medical issues, or missing warnings behind the refusal, as our case results show.

Is refusing a urine test treated the same as a breath test?

Yes. The refusal statute covers both breath and urine tests, so either refusal can be charged as a misdemeanor if the warnings were given. Blood refusals carry only a license suspension, and our attorneys at The Brancato Law Firm check which test was requested before anything else.

Call our Tampa DUI attorneys before the 10 days run out

The license deadline runs from the notice you received at the arrest, not from your court date. The Brancato Law Firm, P.A., founded by Tampa Criminal Defense Attorney Rocky Brancato, will request the review, demand the video, and build the refusal defense from the first week. Call (813) 727-7159 for a free, confidential consultation. You can call us at any hour. Our firm has Spanish-speaking staff, and attorney Jean-Luc Adrien speaks Spanish, Haitian Creole, and French. Read about our Spanish and Haitian Creole criminal defense services.

For more about our defense strategies, visit our Tampa DUI defense page.

The Brancato Law Firm, P.A.

620 E. Twiggs Street, Suite 205, Tampa, FL 33602

(813) 727-7159

Serving Hillsborough, Pinellas, and Pasco Counties

The Brancato Law Firm, P.A. is a Tampa-based criminal defense practice. We are not affiliated with any other Brancato-named law firms.

A breath test result looks like a number on a printout, but the law treats it as the end of a chain of records: monthly inspections, annual inspections, repairs, operator permits, and a 20-minute observation period. Our attorneys request that chain in every DUI case. I’m Rocky Brancato, founder of The Brancato Law Firm, P.A., a Tampa criminal defense firm, a member of the National College for DUI Defense, and a former police academy instructor. When one link in the chain is missing, the State’s best evidence can lose most of its weight.

What does Florida law require before a breath test can be used?

Florida law requires the State to prove the breath test was performed substantially according to methods approved by the Florida Department of Law Enforcement (FDLE), by an operator with a valid permit, on an approved instrument. That requirement appears in section 316.1932, Florida Statutes and section 316.1934, Florida Statutes.

The Florida Supreme Court spelled out the foundation in State v. Donaldson, 579 So. 2d 728 (Fla. 1991). Before breath results come in, the State must present evidence that the test was performed substantially according to approved methods, with an approved machine, by a qualified operator, and that “the machine itself has been calibrated, tested, and inspected in accordance with” the regulations “to assure its accuracy.” The court allowed “minor deviations,” such as storage location or “absolute timeliness of periodic inspection,” as long as there is evidence the machine remained accurate.

When the State meets that foundation, it gets two advantages. Under section 316.1934(2)(c), a result of 0.08 or higher “is prima facie evidence” of impairment. Under section 316.1934(5), the breath test affidavit comes in “without further authentication” and is “presumptive proof of the results,” as long as it lists, among other things, “the date of performance of the most recent required maintenance on such instrument.”

What FDLE rules govern Intoxilyzer inspection and repair?

FDLE’s breath testing rules are in Chapter 11D-8 of the Florida Administrative Code. Florida’s approved instruments are the CMI Intoxilyzer 8000 and Intoxilyzer 9000 under Rule 11D-8.003. The requirements that matter most in a defense review are below.

Each of these leaves a paper trail. Agency inspections are recorded on FDLE/ATP Forms 39 and 40, and the operator’s test is recorded on the Breath Alcohol Test Affidavit, Form 38. When those records are missing, late, or inconsistent, the State’s foundation weakens.

What happened in State v. Kilburn?

In State v. Kilburn, 418 So. 3d 275 (Fla. 2d DCA 2025), three Sarasota County DUI defendants were tested on the same Intoxilyzer 8000. Before their tests, a sheriff’s deputy reported to FDLE that the machine’s breath tube was “leaking and broken and in need of repair.” An FDLE inspector removed the top panel, disconnected an O-ring and wires attached to an electronic chip, and replaced the tube.

The county judge ruled that replacing the tube was a repair, that FDLE was not an authorized repair facility under the rule then in effect, and that the tests therefore were not in substantial compliance with Chapter 11D-8. The Second District agreed and denied the State’s petitions. The court wrote, “It is apparent that the replacement of the breath tube constitutes a repair,” and held that “Unauthorized repair is not a minor deviation from the Department’s rules.” A footnote explained that FDLE had been removed from the repair-facility definition in 2015 “because the Department only performs maintenance on the breath test instruments and does not perform repairs.”

The precise result matters. The order did not bar the breath results outright. It blocked the State from using the section 316.1934 affidavit and the statutory presumptions, which left the State to try to prove the machine’s reliability the traditional way, with scientific testimony. In most DUI cases, that is a much harder road. Because the Second District hears appeals from Hillsborough, Pinellas, and Pasco Counties, Kilburn is binding in every county our firm serves.

Did the July 1, 2026 rule change undo Kilburn?

Partly. FDLE amended Rule 11D-8.002(13) effective July 1, 2026. The definition of “Authorized Repair Facility” now begins “the Department, the breath test instrument manufacturer, or an entity authorized by the breath test instrument manufacturer.” FDLE is back in the definition, so a repair FDLE performs after that date is not unauthorized for the reason the Kilburn court relied on. The same amendment changed FDLE’s inspection interval from once “each calendar year” to “at least once every twelve months.”

The amendment does not say it applies to earlier repairs. Tests run on instruments that FDLE repaired before July 1, 2026 still fall under the old definition, which is the Kilburn rule. For DUI cases from 2025 and early 2026 that are still pending, our attorneys check each instrument’s repair history for exactly this issue. FDLE also still must inspect a machine after any repair before it goes back into evidentiary use, so the post-repair inspection record remains a target under either version of the rule.

How accurate is a breath test compared with a blood test?

Breath and blood alcohol do not track each other perfectly. In a study of drinking drivers, A.W. Jones and L. Andersson, Variability of the Blood/Breath Alcohol Ratio in Drinking Drivers, Journal of Forensic Sciences (1996), found that the ratio between blood and breath alcohol varied from driver to driver, with 95% of drivers falling between about 1,981 and 2,833.

Florida law handles that variation by defining the limit directly in breath, 0.08 grams of alcohol per 210 liters, under section 316.193, Florida Statutes. The practical effect is that the breath number depends entirely on the instrument working correctly on that day. That is why the inspection and repair records are worth fighting over. In Hillsborough County, where the MADD court monitoring program tracked more than 4,100 DUI cases from October 2024 through September 2025 according to FDOT’s FY2025 Highway Safety Annual Report, a single instrument can be used for a large number of arrests.

How do our attorneys challenge an Intoxilyzer result?

Our attorneys challenge an Intoxilyzer result by auditing the instrument, the operator, and the test, then holding the State to Donaldson. You can learn more on our Tampa DUI lawyer page. The audit usually covers:

1. The instrument’s history. Monthly agency inspections, the most recent FDLE inspection, every repair, who performed it, and the post-repair inspection.
2. The affidavit. Whether it lists the most recent required maintenance date and matches the inspection records, as section 316.1934(5) requires.
3. The operator. Whether the officer’s breath test operator permit was valid on the test date.
4. The 20-minute observation. Body camera and jail video often show whether the officer actually watched the client, or was filling out paperwork while the client burped, coughed, or put something in their mouth.
5. The two samples. Whether the results fell within 0.020 of each other, and why a third sample was or was not taken.
6. The witnesses. In Hillsborough County, the Sheriff’s Office runs a Central Breath Testing unit, and its operators and agency inspectors are often the witnesses in a breath challenge. We depose them when the records do not line up.

Courts continue to refine these issues. In Sanchez v. State, No. 3D24-0231 (Fla. 3d DCA Sept. 10, 2025), the court held that an officer who maintains the Intoxilyzer and serves as records custodian gives lay testimony, not expert testimony. In State v. Repple, No. SC2024-1088 (Fla. Dec. 30, 2025), the Florida Supreme Court held that a city officer may request the implied consent breath test at a breath testing facility outside the city. Knowing where these lines are drawn tells us which challenges are worth filing.

Our firm has also won DUI cases without the breath test being the deciding issue, including a not guilty verdict on DUI and resisting where scene video showed no impairment, and a commercial driver’s license reinstated on appeal after a DHSMV suspension. Those results are on our case results page. Past results do not guarantee future outcomes.

Frequently asked questions about Intoxilyzer challenges in Florida

Can a breath test be thrown out in Florida if the machine was not maintained?

It can be kept from carrying its statutory presumptions, and in some cases excluded, when the State cannot show substantial compliance with FDLE’s inspection and repair rules. The Brancato Law Firm requests the instrument’s full inspection and repair history in every breath test case so that issue is never missed.

What was the Kilburn breath test case about?

State v. Kilburn, 418 So. 3d 275 (Fla. 2d DCA 2025), held that FDLE’s replacement of a broken breath tube was an unauthorized repair under the rule then in effect, so the State lost the statutory presumptions for three DUI tests. Our attorneys at The Brancato Law Firm check whether any machine used in a client’s case was repaired before July 1, 2026, when FDLE changed the rule.

How often must an Intoxilyzer be inspected in Florida?

An agency inspector must inspect each instrument at least once each calendar month under Rule 11D-8.006, and FDLE must inspect it at least once every twelve months under Rule 11D-8.004. The Brancato Law Firm compares those dates with the date of the client’s test, because a gap can undermine the State’s foundation.

What is the 20-minute observation period for a breath test?

Before the test, the subject must not have taken anything by mouth or regurgitated for at least 20 minutes, under Rule 11D-8.007(3). Our attorneys at The Brancato Law Firm review the jail and body camera video minute by minute to see whether the observation actually happened.

Should I refuse a breath test in Florida?

Refusing has its own consequences, including a license suspension and possible criminal penalties for a second refusal, so it is not a simple choice. The Brancato Law Firm explains the tradeoffs in our post on breathalyzer refusal in Florida, and we defend refusal cases with the same scrutiny as breath test cases.

Can I get the maintenance records for the Intoxilyzer used in my case?

Yes. The inspection, maintenance, and repair records for a specific instrument can be obtained through discovery, subpoena, and public records requests. The Brancato Law Firm gets those records early, because they often decide whether the breath result can be challenged at all. See also How to Challenge Field Sobriety Tests in Tampa.

Talk to our DUI attorneys about your breath test

Instrument records can take weeks to collect, and the license challenge must be filed within 10 days of the arrest. The Brancato Law Firm, P.A., founded by Tampa Criminal Defense Attorney Rocky Brancato, will request the Intoxilyzer records, review the observation video, and file the license challenge on time. Call (813) 727-7159. You can call us at any hour. Our firm has Spanish-speaking staff, and attorney Jean-Luc Adrien speaks Spanish, Haitian Creole, and French. Read about our Spanish and Haitian Creole criminal defense services.

For more about our defense strategies, visit our Tampa DUI Defense page.

The Brancato Law Firm, P.A.

620 E. Twiggs Street, Suite 205, Tampa, FL 33602

(813) 727-7159

Serving Hillsborough, Pinellas, and Pasco Counties

The Brancato Law Firm, P.A. is a Tampa-based criminal defense practice. We are not affiliated with any other Brancato-named law firms.

Each case is unique, and past results do not guarantee future outcomes. This article is general information, not legal advice.

DUI manslaughter cases in Florida are defended on two things the State has to prove: that the driver was impaired, and that the driving caused or contributed to a death. Both elements carry a heavy burden of proof, and both can be attacked. The chemical evidence, the lawfulness of the stop and the blood draw, and the cause of the crash itself are all open to challenge. Most of the highest-value defense work happens early, often in the first 72 hours after a fatal crash, while evidence is still being collected and before a lawyer is even hired.

Impaired driving sits behind a large share of fatal crashes, with an estimated 11,904 alcohol-impaired-driving deaths in 2024 according to NHTSA. Fatal-crash cases draw intense pressure from prosecutors and the public, and that pressure is part of what a defense has to work against. At The Brancato Law Firm, we defend these cases across Hillsborough, Pinellas, and Pasco Counties, and our founder Rocky Brancato has tried more than 150 jury trials to verdict. Our starting point is straightforward: a serious charge is not the same as a hopeless one.

On paper, DUI manslaughter carries a four-year mandatory minimum. The realistic sentencing exposure is closer to ten years once Florida’s scoresheet is run. That gap is exactly why these cases are worth fighting hard, and why the work has to start fast.

What the State has to prove in a DUI manslaughter case

Under Florida Statute 316.193, the State has to prove three things beyond a reasonable doubt:

• The accused drove or was in actual physical control of a vehicle.
• The accused was impaired to the point that normal faculties were affected, or had a blood-alcohol or breath-alcohol level of 0.08 or higher.
• By reason of that operation, the accused caused or contributed to causing a death.

There is no intent requirement. The driver does not have to mean to hurt anyone. For a plain-language breakdown of the charge and its penalties, see our guide on what DUI manslaughter involves.

Impairment can be proven two separate ways. The “normal faculties” theory relies on officer observations, driving pattern, and field sobriety exercises. The “per se” theory relies on a chemical test reading of 0.08 or higher. Each path has its own weaknesses, which is why a real defense looks hard at both.

Why causation is where these cases are really won or lost

Florida’s causation standard is unusually low, and that is the most important thing for anyone facing this charge to understand. The statute requires only that the impaired operation “caused or contributed to causing” the death. The Florida Supreme Court in Magaw v. State held that the State does not have to prove the driver’s drinking caused the crash. It only has to prove that the operation of the vehicle did, and that any lack of care attributable to the impaired driver will satisfy the standard. Later cases like State v. Hubbard confirmed that simple negligence is enough and the driver need not be the sole cause.

That sounds discouraging. It is actually where the leverage is. Because the standard is so low, the defense invests heavily in proving that something else was the real cause.

There is a hard limit on the State’s theory. If the victim’s own conduct was the sole proximate cause of the death, there is no DUI manslaughter. The classic illustration is a pedestrian who darts into traffic where no sober driver could have avoided the collision. Impairment does not turn an unavoidable accident into a homicide.

This is why independent accident reconstruction is the single strongest line of defense. A reconstructionist examines:

• Speed, point of impact, and the angle of the collision
• Visibility, lighting, weather, and road conditions
• Whether a second driver ran a red light or otherwise intervened
• Whether a vehicle defect, such as failed brakes, a tire blowout, or steering failure, caused the loss of control

We have seen a mechanical failure rather than the driver change the entire analysis of a crash. The cause is not always the person behind the wheel. We have also taken causation fights to a jury, including a fatal wrong-way crash on the Selmon Expressway where the central battle was the State’s theory of what actually caused the collision. DUI manslaughter is a homicide charge, and we approach it with the same forensic depth we bring to any homicide defense. Each case is unique, and past results do not guarantee future outcomes.

Why the four-year mandatory minimum understates the real exposure

The statute sets a four-year mandatory minimum, and many people stop reading there. The real number is usually higher because of how Florida scores these cases.

DUI manslaughter is a Level 8 offense under Florida’s Criminal Punishment Code. A primary Level 8 offense scores 74 sentencing points. A death adds 120 victim-injury points. The code then subtracts 28 from the total and multiplies the remainder by 0.75 to produce the lowest permissible prison sentence. Because a death is always part of a DUI manslaughter case, the math runs like this:

• 74 points (primary offense) plus 120 points (death) equals 194 points
• 194 minus 28 equals 166
• 166 multiplied by 0.75 equals 124.5 months, or about 10.4 years

When the guideline floor is higher than the mandatory minimum, the higher number controls, unless the judge grants a lawful downward departure. So the working exposure on a standard DUI manslaughter case is closer to ten years than four. The same scoresheet, run without the death points, would land near 34.5 months. The death points are what make these cases so serious, and they are also why a credible attack on impairment or causation matters so much to the final sentence.

How Trenton’s Law changed DUI manslaughter penalties in 2025

Trenton’s Law, passed as HB 687, took effect on October 1, 2025, and raised the stakes considerably for repeat fatal-driving cases. Two changes matter most.

First, a prior conviction for DUI manslaughter, BUI manslaughter, vehicular homicide, or vessel homicide now elevates a new DUI manslaughter to a first-degree felony, with exposure up to 30 years. Older priors count regardless of how long ago they happened.

Second, the law made refusing a breath or urine test its own separate crime in certain circumstances. The decision to refuse a test now carries its own consequences, which makes early legal advice even more important. We cover the mechanics in our explainer on refusing a breath test in Florida.

The practical takeaway: if there is any prior fatal-driving conviction in the picture, the case is in first-degree-felony territory, and the defense strategy changes accordingly.

How the chemical evidence gets challenged

The State’s impairment proof usually rests on a breath or blood test. Both are heavily regulated, and both are genuinely vulnerable when the rules are not followed.

Challenging the Intoxilyzer 8000 breath test

Florida’s evidentiary breath instrument is regulated by the Florida Department of Law Enforcement under Administrative Code Rule 11D-8. The defense can subpoena every maintenance, repair, and monthly-inspection record for the specific machine used and look for:

• Gaps in the required agency inspections
• Unauthorized repairs (only the manufacturer or an approved facility may repair the machine)
• A missing or interrupted 20-minute observation period, which guards against mouth-alcohol contamination
• Radio-frequency or temperature interference, which is worse when the machine sits in a patrol vehicle

Florida courts have excluded breath results when the program failed to follow these rules.

Challenging the blood test

In fatal crashes, blood is usually drawn. The defense scrutinizes the draw technique (an alcohol swab where a non-alcohol antiseptic is required can contaminate the sample), the chain of custody from collection through testing, and whether the lab measured hospital serum or plasma rather than whole blood. Serum readings tend to run higher than whole-blood readings, so an apparent number over 0.08 can shrink once an expert converts it correctly. Florida law also limits who may draw the blood to specific medical personnel.

Rising BAC and retrograde extrapolation

Alcohol keeps absorbing for roughly 30 to 90 minutes after drinking. A sample taken an hour or more after driving can overstate the BAC at the time the person was actually behind the wheel. A forensic toxicologist can work backward to argue the driver was below 0.08 while driving. We explore this in detail in our case study on why your BAC at the station is not your BAC behind the wheel.

Challenging the stop and the warrantless blood draw

September 2026 update: The law on warrantless blood draws just moved decisively in the defense’s favor. In State v. Marlin, No. 4D2025-1448 (Fla. 4th DCA Sept. 2, 2026), the Fourth District affirmed suppression of a forced blood draw in a fatal Turnpike crash, held that the natural dissipation of alcohol is never a per se exigency, and receded from the “probable cause” language in State v. Acevedo that prosecutors had been treating as an exception to the warrant requirement. Absent actual consent or case-specific exigent circumstances, a warrant is required — regardless of Florida’s implied consent law. Our full analysis is in can police take your blood without a warrant in Florida.

Two constitutional challenges come up repeatedly in fatal-crash cases.

The first is the stop. An officer needs reasonable suspicion of a traffic violation or probable cause of a crime to pull a vehicle over. If the stop was unlawful, everything that followed, including officer observations, the breath test, and the blood draw, can be suppressed as fruit of an illegal stop.

The second is the blood draw. The U.S. Supreme Court held in Missouri v. McNeely that a warrantless blood draw requires genuine exigent circumstances, and that the natural dissipation of alcohol is not, by itself, an automatic emergency. If officers had time to get a warrant and did not, the blood result may be thrown out. In a fatal crash where the driver is taken to a hospital, there is often time to seek a warrant, which makes this a live issue in many cases.

Why scene and hospital statements often get suppressed

People involved in a fatal crash are frequently questioned at the scene or in the hospital while in shock. What they say can often be kept out of evidence.

Florida’s accident-report privilege, found in Section 316.066, provides that a crash report or a statement made to an officer for the purpose of completing one may not be used as evidence in any trial, civil or criminal. Under what Florida courts call the “changing hats” doctrine, set out in State v. Norstrom, 613 So. 2d 437 (Fla. 1993), an officer who indicates the driver must answer has to expressly tell the driver that a criminal investigation has begun, then immediately give Miranda warnings, before those statements become admissible. Statements made during the crash-investigation phase, without that switch, are privileged.

This is a powerful suppression tool. It does not cover everything. An officer can still testify to physical observations like the odor of alcohol or slurred speech. But admissions made while a frightened driver believed he was simply helping complete a report often cannot be used against him.

The experts who actually move these cases

A serious DUI manslaughter defense is built on retained experts, and the order matters. Reconstruction comes first, because causation is the element with the most leverage.

• Accident reconstructionist. Establishes speed, impact geometry, and what actually caused the crash.
• Forensic toxicologist. Interprets BAC, handles retrograde extrapolation, and addresses serum-versus-whole-blood conversion.
• ASE-certified mechanic. Inspects the vehicle for a defect that caused the loss of control.
• Medical expert. Addresses cause of death and any pre-existing conditions.

All expert testimony has to satisfy Florida’s Daubert standard before a jury hears it. Our firm maintains a network of forensic experts, including forensic pathologists, accident reconstruction specialists, and former medical examiners. Our founder also spent years as a police academy instructor, training officers on how to investigate and testify, which sharpens cross-examination of the State’s witnesses. This is the forensic rigor we bring when we challenge the State’s forensic evidence, and it is the same standard we apply regardless of the charge. Each case is unique, and past results do not guarantee future outcomes.

DUI manslaughter vs. vehicular homicide, and how they get stacked

A fatal crash often produces two charges from the same event: DUI manslaughter and vehicular homicide. They are both second-degree felonies, but they require the State to prove different things.

When both charges are filed, the defense builds independent defenses for each so the counts do not stack against the client. You can read more about the recklessness standard in our explainer on vehicular homicide in Florida.

What does a realistic reduction look like? Because of the mandatory minimum, the only path below four years is a negotiated reduction to a lesser charge, such as DUI with serious bodily injury or reckless driving, or a lawful downward departure. Reductions are harder to win in fatal cases than in standard DUIs, because prosecutors face public pressure. What moves the needle is the strength of the defense. A genuine problem with the State’s impairment proof, a credible causation theory pointing elsewhere, or suppressible evidence is what makes the State willing to talk.

Why the first 72 hours matter most

The single most important thing a person facing this charge can do is get an experienced Tampa DUI defense team working immediately. Fatal-crash investigations move fast, and evidence disappears.

In the first hours and days after a crash, the defense can:

• Preserve the vehicle’s event data recorder, or black box, which can show speed and braking before impact
• Track down dashcam and nearby surveillance footage before it is overwritten
• Identify and interview witnesses while memories are fresh
• Assert the accident-report privilege before damaging statements get locked in
• Get an independent reconstruction started while the scene is still intact

Once skid marks fade, footage is recycled, and witnesses scatter, that leverage is gone. Early counsel preserves the evidence the defense will need later. The sooner it starts, the more there is to work with.

Frequently asked questions about DUI manslaughter in Florida

Is DUI manslaughter a felony in Florida?

Yes. It is a second-degree felony punishable by up to 15 years in prison. It becomes a first-degree felony, with exposure up to 30 years, if the driver left the scene or has a qualifying prior conviction under Trenton’s Law.

What is the minimum sentence for DUI manslaughter in Florida?

The statute sets a four-year mandatory minimum. In practice, the sentencing scoresheet usually produces a higher floor, often around 124.5 months (about 10.4 years), because a death adds 120 points to the calculation.

Can a DUI manslaughter charge be reduced or dropped?

Sometimes. Because of the mandatory minimum, the routes below four years are a negotiated reduction to a lesser charge or a lawful downward departure. A serious problem with the State’s proof of impairment or causation is usually what makes a reduction realistic.

Does the State have to prove the driver caused the crash?

The State has to prove the impaired driving caused or contributed to the death, which is a low standard. But if someone else, or the victim’s own conduct, was the sole cause of the crash, there is no DUI manslaughter.

Serious charges still have real defenses

A DUI manslaughter charge is among the most serious a person can face in Florida, and the exposure is real. But the State carries the burden on impairment and on causation, and both are open to challenge. The chemical evidence has to be collected and maintained by the rules. The stop and the blood draw have to satisfy the Fourth Amendment. The cause of the crash has to hold up against an independent reconstruction. The work that decides these cases starts long before trial.

This is the kind of case our firm is built for. We prepare every case, from a first DUI to capital murder, as though it may go to trial, and our founder ran the largest criminal defense operation in Tampa Bay as Chief Operations Officer of the Hillsborough County Public Defender’s Office, where he oversaw a staff of over 100 attorneys. That system-level knowledge informs how we read a fatal-crash case from the first day.

If you or someone in your family has been arrested or is under investigation for DUI manslaughter in the Tampa Bay area, the sooner you have a defense team in place, the more evidence can be preserved and the more options stay open. Call The Brancato Law Firm at (813) 727-7159 for a free, confidential consultation.

Each case is unique. Past results do not guarantee future outcomes.