Mississippi DUI Laws Explained

By Javier Marín, Editor·Last reviewed September 2026·How we check this

A Mississippi DUI charge under MCA § 63-11-30 triggers two parallel processes: a criminal case in justice or municipal court, and an administrative license suspension by MS DPS. Both move quickly, both have separate timelines, and both must be answered separately. Mississippi is one of the strictest states in the South for first-offense DUI penalties — the conviction stays on the record permanently and triggers the mandatory Alcohol Safety Education Program (ASEP) for reinstatement.

The legal threshold

Under MCA § 63-11-30, Mississippi's DUI thresholds are:

Adults 21+: 0.08% BAC.
Aggravated DUI (high BAC): 0.15% BAC or higher (longer suspension and longer ignition-interlock requirement).
Drivers under 21: 0.02% BAC under Mississippi's zero-tolerance law (separate administrative consequence with 90-day suspension on first offense).
Commercial drivers (CDL): 0.04% BAC.
"Common-law DUI": Mississippi also charges DUI on impairment evidence below 0.08% under MCA § 63-11-30(1)(a) — the prosecution must prove the driver was "under the influence" of alcohol or any other substance impairing the driver's ability to operate the vehicle.

The 90-day administrative suspension

After a Mississippi DUI arrest where the BAC was 0.08% or higher (or the driver refused chemical testing), the officer typically takes the driver's Mississippi driver license on the spot and issues a temporary driving permit valid for 30 days. The administrative suspension takes effect after the 30-day temporary permit:

90-day suspension for a first BAC failure (0.08+).
1-year suspension for a second offense within 5 years.
5-year suspension for a third offense within 5 years.
90-day suspension for a first chemical-test refusal under the implied-consent law.

Drivers can request an administrative hearing within 30 days of arrest to contest the suspension on narrow grounds (lawful stop, lawful arrest, BAC at or above 0.08%, lawful chemical test). Winning the administrative hearing prevents the administrative suspension but does not affect the criminal case.

First-offense criminal penalties

A first DUI conviction in Mississippi is a misdemeanor under MCA § 63-11-30, carrying:

48 hours minimum jail (often suspended on completion of the ASEP program, leaving 0 days actual custody for a clean first-offense record).
Fine of $250 to $1,000 (typically $500), plus court costs and assessments.
License suspension of 90 days, separate from administrative suspension.
Mandatory completion of the Alcohol Safety Education Program (ASEP) — an MS DPS-approved education course of at least 12 hours.
Mandatory contribution to the Mississippi DUI Victim's Compensation Fund.
Mandatory ignition-interlock device installation for a minimum of 1 year on first offense (extended to 3 years for high-BAC).
SR-22 financial-responsibility filing for 3 years — see Mississippi insurance.

Aggravated DUI (BAC 0.15%+)

An aggravated DUI conviction adds:

Minimum 24 hours of jail time (typically not suspended).
Fine of $500 to $1,500.
1-year license suspension.
Mandatory ignition-interlock device for 3 years on first offense.
Extended ASEP program requirement.

The Alcohol Safety Education Program (ASEP)

ASEP is Mississippi's mandatory education and treatment requirement for every DUI conviction. The program runs at least 12 hours of group instruction (with extended hours for repeat offenders or aggravated DUI), administered by MS DPS-approved providers across the state. The cost runs about $200-$400, paid by the driver. Completion of ASEP is a prerequisite to reinstatement — the license cannot be reissued until DPS receives the ASEP completion certificate. A driver who fails to complete ASEP within the required period sees the suspension extended indefinitely.

The Mississippi DUI Victim's Compensation Fund

Mississippi requires every DUI defendant to contribute to the DUI Victim's Compensation Fund, a state fund that compensates victims of DUI-related crashes. The mandatory contribution is paid as part of the criminal sentence and is collected by the court. The amount varies by county and by the severity of the conviction; aggravated DUI cases typically pay a higher contribution.

Ignition-interlock devices

Mississippi requires an ignition-interlock device on every DUI conviction since the 2019 expansion. The device prevents the vehicle from starting if the driver's breath shows alcohol. Installation costs about $75-$150 plus $70-$100 monthly monitoring, paid by the driver. The device records every test attempt and rolling re-test; failed tests can extend the interlock period or trigger additional sanctions. The interlock period is at least 1 year on first offense, 3 years on aggravated DUI, and longer for repeat offenders.

Repeat DUI offenses

A second DUI within 5 years is a misdemeanor with elevated penalties:

Mandatory 5 days to 1 year in jail.
Fine $600-$1,500.
1-year license suspension.
Vehicle forfeiture if the vehicle is registered to the offender.
Extended ignition-interlock requirement.

A third DUI within 5 years is a felony under MCA § 63-11-30(2)(c) — up to 5 years in state prison, $5,000 fine, 5-year license suspension, and vehicle forfeiture. Mississippi's 5-year lookback window is shorter than some states' 10-year windows, but felony DUI convictions remain on the record permanently for sentencing-enhancement purposes. See Mississippi suspended license for the reinstatement steps after the suspension period ends.