State service guide

Mississippi DUI laws: 30-day temporary permits, 120-day first suspensions, and a separate under-21 zero-tolerance lane

Mississippi's official DUI materials work best when you treat one stop as several possible license problems instead of one generic first-offense chart. The state uses the regular adult DUI rule for impairment or 0.08 BAC, a separate under-21 zero-tolerance lane at 0.02 up to under 0.08, and a 0.04 BAC threshold for CDL operation. On the license side, DPS says the arrest receipt is only a 30-day temporary permit, refusal usually brings a 90-day Class R suspension, a first conviction brings a 120-day suspension unless the court orders ignition interlock instead, and repeat convictions escalate quickly into one-year and felony lanes. Mississippi also makes clear that ordinary hardship licenses are not the DUI path here.

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BAC thresholds Mississippi uses 0.08 for most adult DUI cases, 0.02 up to under 0.08 for under-21 zero-tolerance cases, and 0.04 for commercial-motor-vehicle DUI
Arrest receipt rule The DUI arrest receipt acts as a temporary permit for only 30 days unless the court extends it
Refusal rule Refusing chemical testing usually means a 90-day Class R suspension, or 1 year if you already have a prior DUI conviction or nonadjudication
Conviction ladder A first DUI conviction brings 120 days, a second within 5 years brings 1 year, and later convictions move into felony and interlock-only post-release lanes

Overview

What this page helps you verify

A strong Mississippi DUI page should start by separating the state's different tracks. The official sources reviewed here show an arrest-side temporary-permit and refusal system, a conviction-side suspension and interlock system, and a separate zero-tolerance schedule for drivers under 21 whose BAC is 0.02 or higher but still below 0.08. The details that matter most in practice are the 30-day temporary permit trap, the 90-day refusal suspension, the first-offense 120-day suspension and MASEP requirement, the five-year repeat-offense window for second and third DUI convictions, and the fact that Mississippi steers DUI drivers toward ignition-interlock restricted licensing instead of the ordinary hardship-license lane.

Last reviewed: 2026-05-18. This page was manually upgraded against service-specific official sources, but requirements can still change quickly.

Usually needed

Documents and information to prepare

  • The DUI citation, arrest paperwork, and the receipt that serves as the 30-day temporary driving permit
  • Any court order, conviction record, or nonadjudication order showing whether the case is first offense, repeat offense, zero tolerance, or interlock-restricted
  • A driving record or other official record showing prior DUI convictions or nonadjudications within the relevant five-year window
  • Proof that you completed the Mississippi Alcohol Safety Education Program if your court or DPS record requires it
  • Proof of ignition-interlock installation and DPS verification, plus any insurance proof the DUI case requires

Typical flow

What the process often looks like

  1. Identify first whether the case is an adult DUI, an under-21 zero-tolerance case, a CDL case, or a refusal case, because Mississippi changes the threshold and suspension rules by category.
  2. Treat the 30-day arrest receipt as a real deadline, because DPS says the temporary permit expires after 30 days unless the court extends it.
  3. Track the conviction and restricted-license side separately from the arrest-side suspension, because Mississippi can layer refusal, conviction, and interlock consequences in the same case.
  4. Finish the MASEP, insurance, interlock, and court-document requirements before driving again, and confirm DPS has entered the court paperwork if you are seeking an ignition-interlock restricted license.

Core thresholds

Mississippi splits DUI law into adult, under-21 zero-tolerance, and commercial-driver lanes

The official state materials do not treat every alcohol case the same way.

  • The current Mississippi driver's manual says adult DUI penalties apply to drivers age 21 and older with a blood alcohol content of 0.08 or higher.
  • The same manual says zero-tolerance penalties apply to drivers under 21 with a blood alcohol content of 0.02 or higher but less than 0.08.
  • If a driver under 21 reaches 0.08 or higher, the manual says the case is classified as a regular DUI instead of a zero-tolerance DUI.
  • The DPS DUI Department also says CDL holders face a one-year commercial disqualification for a first conviction involving operation of a commercial motor vehicle at 0.04 or more, or under the influence as provided in Section 63-11-30.

Administrative side

A Mississippi DUI arrest can create license trouble before the court case is finished

This is one of the state's biggest practical traps.

  • The DUI Department says the officer should seize the driver's license and issue a receipt that serves as a temporary permit to drive for only 30 days.
  • If the driver does not contact the court within those 30 days to request a trial date and an order extending the temporary permit, DPS says driving privileges will be administratively suspended for 90 days.
  • For refusal of breath, blood, or urine testing, the DUI Department says a Class R license is suspended for 90 days, or for 1 year if the person was previously convicted or nonadjudicated for DUI.
  • The same page says a CDL is suspended for 1 year for refusal of chemical testing.

Convictions and restricted driving

Mississippi moves quickly from a 120-day first suspension to felony and interlock-only later stages

The conviction ladder is much steeper than a simple first-offense summary suggests.

  • Upon a first DUI conviction, the DUI Department says a Class R license is suspended for 120 days unless the court orders an ignition-interlock restricted license instead.
  • For that first-offense lane, DPS says attendance and completion of MASEP is required along with proof of insurance for three years.
  • A second DUI conviction within 5 years brings a 1-year Class R suspension unless the court orders ignition interlock.
  • A third DUI conviction within 5 years is a felony, and DPS says the Class R license is suspended for the full sentence, with only an interlock-restricted license available for 3 years after release from incarceration.
  • A fourth DUI conviction, regardless of time period, is also a felony, and DPS says the driver is limited to an interlock-restricted license for 10 years after release.
  • Mississippi's hardship-license page separately says hardship licenses are not available for individuals who have received a DUI.

Younger drivers and court timing

Mississippi's under-21 zero-tolerance penalties and paperwork rules deserve their own lane

This is where generic benchmark pages often collapse important Mississippi distinctions.

  • The 2025 Mississippi driver's manual lists zero-tolerance penalties of 120 days for a first offense, 1 year for a second offense within 5 years, and 2 years or until age 21, whichever is longer, for a third offense within 5 years.
  • The manual also says that if you are convicted of a first regular DUI or a first zero-tolerance DUI and you refused the breath or chemical test, an extra 90-day suspension is added.
  • The DUI Department says suspensions for nonadjudications and convictions start 21 days from the date the court order was entered.
  • The same page says a person is eligible for DUI nonadjudication only one time and may not have been the holder of a CDL or learning permit at the time of the offense.
  • If a driver appeals a municipal- or justice-court DUI finding, DPS says the file-stamped notice of appeal must be provided within 30 days of the conviction date.

Accuracy notes

Where people get tripped up

  • Mississippi DUI content should separate the 30-day temporary-permit lapse, chemical-test refusal, conviction suspension, and zero-tolerance rules because one event can create more than one license sanction.
  • Drivers under 21 need their own branch. Mississippi uses a 0.02-to-under-0.08 zero-tolerance lane, but at 0.08 or more the manual says the case becomes a regular DUI.
  • The official Mississippi public materials reviewed here point DUI drivers toward ignition-interlock restricted licensing rather than the ordinary hardship-license program, which the hardship page says is unavailable after a DUI.

FAQ

Common questions

  • What BAC is illegal for DUI in Mississippi?

    For most adult drivers, Mississippi uses 0.08 BAC. For drivers under 21, the state's zero-tolerance lane starts at 0.02 BAC if the result is still below 0.08, and commercial-motor-vehicle cases use 0.04 BAC.

  • What happens to my license right after a Mississippi DUI arrest?

    DPS says the officer should seize the license and issue a receipt that works as a temporary permit for 30 days. If you do not get the court to extend that permit within the 30-day window, DPS says an administrative 90-day suspension follows.

  • What if I refuse the chemical test in Mississippi?

    The Mississippi DUI Department says refusal usually causes a 90-day Class R suspension. If you already have a prior DUI conviction or nonadjudication, the refusal suspension rises to 1 year, and CDL refusal carries a 1-year suspension.

  • How does Mississippi's under-21 zero-tolerance DUI rule work?

    The current Mississippi driver's manual says zero-tolerance penalties apply to drivers under 21 with a BAC of 0.02 or higher but less than 0.08. A first offense brings 120 days, a second within 5 years brings 1 year, and a third within 5 years brings 2 years or until age 21, whichever is longer.

  • Can I get a normal hardship license in Mississippi after a DUI?

    No. Mississippi's hardship-license page says hardship licenses are not available for individuals who have received a DUI. The restricted-driving path described in the DUI materials is the ignition-interlock restricted license when the court orders it.

Sources

Official references used for this page

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