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DUI with a BAC Over .15

What happens if you get arrested for DUI and your blood or breath alcohol concentration (BAC) is over .15? Florida law provides for enhanced penalties if the BAC is over .15. The first battle is getting the prosecutor to stipulate to a BAC below .15 so that the enhanced penalties do not apply.

Another goal is getting the breath test reading thrown out entirely if there are problems with the breathalyzer machine used in the case. When the Intoxilyzer 8000 is not in compliance with the rules for the maintenance or inspection of that machine, then the court can throw the entire breath test out of evidence.

Other defenses in the case can force the prosecutor to reduce the charges. For instance, in Hillsborough County, FL, if the BAC was over .15 but under .20, a first offense might still be eligible for the new DUI Diversion Program called “RIDR.”

Level 2 of the RIDR diversion program allows the DUI over .15 to be reduced to reckless driving with a withhold of adjudication in exchange for completing extra sanctions. Those extra sanctions for the Level II RIDR program include seventy-five (75) hours of community service and the ignition interlock alcohol monitoring device for six months.

Attorneys for DUI over .15 in Tampa, FL

Having a breath test reading with a BAC over .15 is surprisingly common. In fact, according to the Florida Department of Law Enforcement, the average breath test reading was right at .15 for all breath tests given in 2020.

The attorneys at Sammis Law Firm in Tampa, FL, are experienced in taking DUI breath test cases to trial and negotiating with the prosecutor for the best possible offer to reduce the charges.

We also understand the best ways to get the breath test reading thrown out of evidence if the Intoxilyzer 8000 breath test was maintained in accordance with the Chapter 11-D8 F.A.C. rules.

Contact us to speak with one of the four attorneys today about your case. Call (813) 250-0500 today.

Click here to read more about our Recent Case Results in Drunk Driving Cases.

Enhanced DUI Penalties for DUI with a BAC of .15

The prosecutor with the State Attorney’s Office must allege a basis for the enhanced penalty in the charging document (which might be the DUI citation) and that element must be proven beyond all reasonable doubt at trial. The basis for the enhancement is an allegation that the BAC is over .15 percent.

The court in State v. Haddix explained the requirement:

“We believe the BAL (Blood Alcohol Level above .15) … are essential facts constituting the offense charged which requires a factual determination by the jury or factfinder.” State v. Haddix, 668 So.2d 1064 (Fla. 4th DCA 1996).

Provided below is a summary of the enhanced penalties for any driver convicted of DUI with a BAC over .15 (without a stipulation to a lesser charge):

  • First Offense for DUI Penalties
    • First Offense under .15 – The court has the option of ordering the Ignition Interlock Devise for up to six (6) months but it is not required; or
    • First Offense with a BAC of .15 or above – The court is required to order the Ignition Interlock Device for six (6) continuous months. See F.S. 316.193(4).
    • Second Offense with a BAC of .15 or above – The Ignition Interlock is required for Not Less than Two (2) Continuous Years. F.S. 316.193(4).
    • Misdemeanor and Felony – The Ignition Interlock is required for Not Less than Two (2) Years. F.S. 316.193(2)(b).

When the BAC Reading is Over .15

What happens if one BAC reading is above .15 but the other reading is below .15? If one reading registered below .15 and another reading registered above .15, the State fails to meet the burden of proof to convict someone of an aggravated DUI with a reading of .15 or higher.

For example, in Department of Highway Safety and Motor Vehicles v. Colling, 178 So.3d 2 (Fla. 5th DCA 2014), review denied, 148 So. 3d 770 (Fla. 2014), the court acknowledged that if there were two readings with one below the legal limit and one above, an inference that the driver was below the legal limit was equally plausible. Since the burden was on the Department, the burden was not met under these circumstances so the administrative suspension was set aside.

The same logic should apply to cases in which a BAC over .15 must be proven at trial. For this reason, prosecutors tend to accept the lower number at the true BAC level for purposes of determining how to charge the crime or what penalties to ask for at sentencing.

Stipulations to a Blood Alcohol Level of Less Than .15

If you blew over .015 on the breath test then certain enhanced penalties apply. In some cases, the prosecutor may offer to stipulate to a lower BAC level to resolve the case without a trial.

The stipulation is required by Florida Statute Section 316.656(2)(a). That statute provides”

“[n]o trial judge may accept a plea of guilty to a lesser offense from a person charged [with DUI] who has been given a breath or blood test to determine the blood or breath content, the results of which show a blood or breath alcohol content by weight of 0.15 percent or more.”

The form varies from courtroom to courtroom, but the language below comes from a form used in one courtroom in Tampa, FL.


THIS CAUSE having come before the Court on _______________ regarding DUI citation number ________ upon the stipulation of the State of Florida and the Defendant, and the Court having ratified the stipulation of the parties, it is


  1. The Court hereby finds that Defendant’s blood-alcohol level at the time of arrest was less than .15%.
  2. Because Defendant’s blood-alcohol level was less than .15% at the time of the arrest, the Court will not impose the requirement that Defendant installs the ignition interlock device on Defendant’s motor vehicle.

DONE AND ORDERED in Tampa, Florida, this ____ day of __________, 2021.

                                                                                                                             The Honorable ________________

                                                                                                                             COUNTY COURT JUDGE

Additional Resources

States with Increased Penalties for High BAC – Visit the website of the National Conference of State Legislatures (NCSL), the nation’s most respected bipartisan organization providing states support, ideas, connections, and a strong voice on Capitol Hill, to find information on states that have enacted increased penalties for a high blood or breath alcohol concentration. The website also cites a study showing that in 2014, 56 percent of drivers who had been drinking and were involved in fatal crashes had a blood alcohol content of .15 or greater.

Finding a Lawyer for DUI with a BAC Over .15

If you need to find an attorney in Tampa to represent you in a DUI case involving an allegation that your blood or breath alcohol concentration was over .15, then contact an attorney at Sammis Law Firm.

We are experienced in representing clients charged with DUI after submitting to a breath test on the Intoxilzer 8000. We are also experienced in representing clients who submitted to a legal blood draw (or were subjected to a forced blood draw after a warrant was obtained).

Contact us to find out more about how to fight the breath or blood test reading to get it suppressed or excluded from evidence. Call (813) 250-0500 to talk with an attorney over the phone immediately or to schedule an office consultation.

This article was last updated on Wednesday, May 16, 2022. 

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