Florida Blood Alcohol Level Chart: Limits, Penalties, and Refusal

The legal blood alcohol limit for driving in Florida is 0.08% for adult drivers 21 and older, 0.04% for anyone operating a commercial vehicle, and 0.02% for drivers under 21.¹ Hitting or exceeding the number that applies to you creates a per se DUI, meaning prosecutors don’t have to prove you looked or acted impaired. A first conviction at the standard limit brings fines of $500 to $1,000, up to six months in jail, a license revocation of at least 180 days, mandatory community service, DUI school, and an FR-44 insurance filing that raises your premiums for years.

The Three BAC Limits

Florida sets bright-line thresholds by driver category. A chemical test at or above the applicable number is enough on its own to charge you.

0.08% for adult drivers 21 and older. This is the standard per se limit for anyone in a passenger vehicle.¹
0.04% for commercial drivers. A CDL holder operating a commercial vehicle at 0.04% or above faces a one-year disqualification from commercial driving on a first offense, and permanent disqualification on a second. A standard DUI in a personal vehicle triggers the same CDL disqualification.²
0.02% for drivers under 21. Under Florida’s zero-tolerance law, one drink can put an underage driver over the line. A first violation carries a six-month administrative license suspension; a second brings a one-year suspension. A reading between 0.02% and 0.079% is not a criminal offense and does not lead to arrest, but an underage driver at 0.08% or higher is charged as an adult would be.³

There is also a 0.15% enhancement threshold. It’s not a separate “limit,” but reaching it roughly doubles the penalty range at every offense level and triggers a mandatory ignition interlock device.

You Can Still Be Charged Below 0.08%

The statute also prohibits driving “under the influence” of alcohol when your normal faculties are impaired, regardless of what a test shows.¹ In those cases the state builds the charge on the officer’s observations, dashcam footage, and field sobriety results rather than a specific number.

What a First DUI Costs You

At the standard 0.08% threshold, a first conviction carries a stack of criminal, administrative, and financial penalties:

A fine of $500 to $1,000.¹
Up to six months in jail.
License revocation of at least 180 days and no more than one year.⁴
Up to one year of probation, with combined jail and probation capped at one year.⁵
A minimum of 50 hours of community service.
10 days of vehicle impoundment.
DUI school: a Level I course of at least 12 hours of classroom instruction, required before you can apply for a hardship license.⁶

Higher BAC, Higher Penalties

A BAC of 0.15% or higher on a first conviction raises the fine range to $1,000 to $2,000 and the maximum jail term to nine months.¹ It also makes an ignition interlock device mandatory for at least six continuous months on every vehicle you own or regularly drive; at the 0.08% level, the IID is discretionary for a first offense. The same enhanced penalties apply if a child under 18 was in the vehicle, regardless of BAC.

The interlock requires a clean breath sample before the engine starts and prompts random retests while you’re driving. Monthly lease and monitoring fees generally run $60 to $90, with separate charges for installation and removal.

Second offenses at 0.15% or higher carry fines of $2,000 to $4,000 and up to 12 months in jail. A third at that level brings a minimum fine of $4,000.²

Repeat Offenses and When DUI Becomes a Felony

Florida uses different lookback windows depending on which offense number you’re on. The gap between convictions determines both the severity of the penalty and whether the case stays a misdemeanor.

Second Conviction

A second DUI brings a fine of $1,000 to $2,000, up to nine months in jail, and a mandatory ignition interlock for at least one year.⁵ If it falls within five years of the first, the penalties tighten: a mandatory minimum of 10 days in jail (at least 48 consecutive hours), 30 days of vehicle impoundment, and a minimum five-year license revocation.² DUI school jumps to Level II, at least 21 hours of instruction.⁶

Third Conviction Within 10 Years

This is where a Florida DUI turns felony. A third conviction within 10 years of the second is a third-degree felony, punishable by up to five years in prison and a fine of $2,000 to $5,000.² The court must impose at least 30 days in jail with a minimum of 48 consecutive hours, a two-year interlock requirement, 90 days of vehicle impoundment, and a minimum 10-year license revocation.⁵ A third DUI more than 10 years after the second stays a misdemeanor, though the penalties still climb above what a second offense would bring.

Fourth and Beyond

A fourth or subsequent DUI is a third-degree felony no matter how much time has passed since prior convictions. Fines can reach $5,000, and the license revocation is permanent.² A DUI that causes serious bodily injury is also a third-degree felony, and DUI manslaughter carries a mandatory minimum of four years in prison.

License Revocation and Getting Back on the Road

Every DUI conviction triggers a revocation. The length scales with your record:

First conviction: 180 days to one year.⁴
Second within five years: minimum five years.
Third within 10 years: minimum 10 years.
Fourth: permanent.²

Florida allows hardship reinstatement, a restricted license for driving to work, school, or medical appointments. For a first conviction you must finish DUI school and serve at least 30 days of the suspension before requesting a hardship hearing with the Department of Highway Safety and Motor Vehicles.² For a second conviction within five years the wait is one year; for a third within 10 years, two years. You cannot drive at all during that waiting period.

Repeat offenders on a hardship license must stay enrolled in a DUI supervision program for the rest of the revocation period; missing counseling or treatment cancels the license. Reinstatement also requires no consumption of alcohol or controlled substances, and no driving, for at least 12 months beforehand.

FR-44 Insurance

Florida is one of only two states that requires an FR-44 filing after a DUI conviction instead of the more common SR-22. The FR-44 mandates liability coverage far above Florida’s standard minimums:

Bodily injury per person: $100,000 (standard minimum: $10,000).
Bodily injury per accident: $300,000 (standard minimum: $20,000).
Property damage: $50,000 (standard minimum: $10,000).⁷

You must maintain FR-44 coverage for three years from the date your driving privileges are reinstated. Carrying limits five to ten times the normal minimum means substantially higher premiums for that full period. The requirement applies even if the court withholds adjudication; a no-contest plea triggers it too.⁷

Refusing the Test

By driving on Florida roads you’ve given implied consent to a breath, blood, or urine test if lawfully arrested for DUI. Refusing carries both administrative and criminal consequences.⁸

A first refusal brings an automatic one-year license suspension. A second or subsequent refusal brings 18 months.⁸ These are separate from any revocation that follows a conviction.

Refusal is also a standalone crime. A first refusal is a second-degree misdemeanor; a second or subsequent refusal is a first-degree misdemeanor punishable by up to one year in jail.⁹ The refusal itself is admissible against you at a DUI trial, so declining a test typically adds a charge rather than avoiding one.

1
Florida Senate. Florida Code 316 – Driving Under the Influence, Penalties
2
Florida Department of Highway Safety and Motor Vehicles. Florida DUI and Administrative Suspension Laws
3
The Florida Legislature. Florida Statutes 322.2616
4
The Florida Legislature. Florida Statutes 322.28 – Period of Revocation
5
The Florida Legislature. Florida Code 316 – State Uniform Traffic Control
6
Florida Department of Highway Safety and Motor Vehicles. Licensed DUI Programs in Florida
7
Florida Senate. Florida Statutes 324.023 – Financial Responsibility for Bodily Injury or Death
8
The Florida Legislature. Florida Code 316.1932 – Tests for Alcohol, Chemical Substances, or Controlled Substances
9
The Florida Legislature. Florida Statutes 316.1939 – Refusal to Submit to Testing