Mississippi Ignition Interlock Requirements (2026): Costs & Approved Providers
Mississippi’s ignition interlock is not mandatory for every DUI — it’s the only way to keep driving during your suspension. Install the device before your suspension starts and you drive on a restricted license throughout; choose not to install and you can’t drive at all. The state’s Interlock Device Fund helps cover costs for indigent drivers. Here’s how it works and what to expect.
| Offense term | DUI (Driving Under the Influence) |
| All-offender mandate? | No — IID is the optional path to driving during any DUI suspension; courts may also order it. Choosing not to install means no driving during the suspension. |
| 1st offense | Install IID before your 120-day suspension starts → drive on interlock-restricted license for 120 days. Also required for non-adjudication. |
| 2nd offense (within 5 years) | IID for 1 year (tracks the 1-year suspension) |
| 3rd offense | Full sentence served, then interlock-restricted license only for 3 years |
| 4th+ offense | 10 years of interlock-restricted driving after release |
| Non-adjudication | 120-day interlock-restricted license required (§63-11-31) |
| Install timing | Must install before the suspension begins to maintain driving privileges throughout |
| Removal requirement | Serve full term + vendor declaration of no violations in the last 30 days + MASEP (if ordered) + proof of insurance + $175 reinstatement fee |
| 30-day clean window violation | Court may extend the interlock period if start attempt at BAC 0.04+, failed/missed retest, or missed service in the final 30 days |
| Interlock Device Fund | DPS-administered fund offsets install, removal, and monthly costs for offenders the court finds indigent (§63-11-31(7)) |
| DPS fees | $175 interlock fee + $56 interlock-restricted license; court fund fee $50 (convicted) / $250 (non-adjudicated), waived if indigent |
| Who administers | Mississippi DPS — Driver Service Bureau |
| Governing law | Miss. Code §63-11-31; §63-11-30; §63-11-23; §63-15-35/39/61 |
How Mississippi’s IID program works
Mississippi doesn’t mandate an interlock for all DUI offenders — but it makes the device the only path to staying on the road during your suspension. For a first offense, your license is suspended for 120 days. If you install an approved IID before the suspension starts, DPS issues you an interlock-restricted license and you drive for the full 120 days. If you don’t install, you cannot drive at all during those 120 days.
Non-adjudication — Mississippi’s deferred-adjudication option for eligible first offenders — also requires 120 days of interlock-restricted driving even though the DUI charge itself is deferred. The interlock requirement is tied to the license action, not just the conviction.
Mississippi DPS-approved providers
Three major providers are on Mississippi’s DPS-approved list. Guardian, Dräger/RoadGuard, and ALCOLOCK are not on the list — some market in Mississippi but are not approved. Using an unapproved provider will not satisfy your DPS requirement.
| Provider | Monthly est. | Coverage | |
|---|---|---|---|
| Intoxalock | $60–100 | Statewide | 888-283-5899 |
| Smart Start | $70–100 | Statewide | 800-831-3299 |
| LifeSafer | $65–95 | Statewide | 800-634-3077 |
Confirm current DPS approval at driverservicebureau.dps.ms.gov before signing. Guardian, Dräger/RoadGuard, and ALCOLOCK are not on Mississippi’s approved list even though some advertise in the state. Monthly estimates are market ranges; Interlock Device Fund recipients pay reduced amounts.
What an interlock costs in Mississippi
| Installation (one time) | $70–150 |
| Monthly lease + monitoring | $60–100 |
| Removal | $50–75 |
| DPS interlock fee | $175 |
| Interlock-restricted license fee | $56 |
| Court Interlock Device Fund fee (convicted) | $50 (waived if indigent) |
| Court Interlock Device Fund fee (non-adjudicated) | $250 (waived if indigent) |
| DPS reinstatement fee | $175 |
Over a 120-day first-offense IID period, expect roughly $550–850 in device and DPS fees (reduced with the Interlock Device Fund if indigent). Estimate your exact cost →
How to get installed and drive — 5 steps
- Immediately after your DUI charge or conviction, contact a DPS-approved provider and arrange installation before your suspension effective date. Missing this window means no driving during the suspension.
- If you believe the court may find you indigent, ask at sentencing — the Interlock Device Fund fee can be waived and fund contributions can offset device costs.
- Install the device and bring proof of installation to DPS to obtain your interlock-restricted license ($56 fee). Pay the $175 DPS interlock fee.
- Keep every calibration appointment and maintain a clean record, especially in the final 30 days of your term.
- At the end of your term: obtain your vendor’s violation-free declaration (covering the last 30 days), complete MASEP if ordered, present proof of insurance, pay the $175 DPS reinstatement fee, and apply for an unrestricted license.
The 30-day clean window — violations near the end matter most
Mississippi’s violation system focuses on the final 30 days before removal. The court may extend the interlock-restricted period if, within that 30-day window, there is: a startup attempt at BAC 0.04% or higher, a failed or missed rolling retest, or a missed service appointment. A violation near the very end of your term — when compliance fatigue is most common — can add additional time to your requirement. Stay especially vigilant during the last month.