Idaho Ignition Interlock Requirements (2026): Costs & Approved Providers
Idaho has required an ignition interlock for every DUI conviction since January 1, 2019. After your 30-day absolute suspension ends, you have just 10 days to install and get back on the road. A 2026 law change clarified when your restriction ends. Here’s your timeline, your costs, and how to qualify for hardship assistance.
| All-offender state? | Yes — mandatory for all DUI convictions since January 1, 2019 (HB 551, 2018); also triggered by a first failed evidentiary test (90-day ALS) even without conviction |
| Structure | 30-day absolute suspension (no driving) → install within 10 days → 1-year IID term |
| Duration — 1st offense | 1 year from the end of the suspension period (I.C. §18-8005(1)); restriction ends 1 year from vendor’s proof of installation (I.C. §18-8008, eff. 7/1/2026) |
| Duration — ALS (failed test, no conviction) | 1 year after the 90-day ALS |
| Duration — 2nd offense | IID required following the mandatory 1-year suspension; confirm exact term with your attorney — the “2 years” commonly cited is not stated in statute |
| Duration — 3rd+ offense | IID required following the mandatory 1-year suspension; term tracks the court’s restricted-privilege order — confirm with your attorney |
| 10-day install window | You must install within 10 days after the 30-day absolute suspension ends or you cannot legally drive |
| Violation reporting (eff. 7/1/2026) | Vendors must report any lockout (0.025+ BAC) to the prosecutor; can support probation violation proceedings |
| Financial assistance | Court Interlock Device Fund (I.C. §18-8010) — court may authorize for indigent defendants on a showing of hardship |
| ITD reinstatement fee | $285 (DUI conviction); $245 (ALS/refusal) |
| Who certifies devices | Idaho Transportation Department (ITD) |
| Governing law | I.C. §18-8004; §18-8005; §18-8008; §18-8010; §49-1220 |
| Offense term | DUI (Driving Under the Influence) |
How Idaho’s timeline works
After a first DUI conviction, Idaho imposes a 30-day absolute suspension — no driving for any reason. The moment those 30 days end, you have 10 days to install an ITD-certified interlock device and begin your 1-year IID term. Miss that window and you cannot legally drive until you install.
A 2026 law change (I.C. §18-8008, effective July 1, 2026) clarified when the restriction ends: 1 year from the date the vendor submits proof of installation to ITD. This removes ambiguity about when your term concludes — get your provider to file promptly after install.
A failed evidentiary test also triggers an administrative 90-day ALS suspension — even without a DUI conviction — followed by a 1-year IID requirement. Both the criminal and administrative tracks can run simultaneously if both apply.
Idaho ITD-certified providers
Five major national brands are on Idaho’s certified list. Note: ALCOLOCK is not on the ITD list.
| 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 |
| Guardian Interlock | $65–95 | Statewide | 800-499-0994 |
| RoadGuard (Dräger) | $65–95 | Statewide | 833-545-0368 |
Monthly estimates are market ranges. Confirm your provider’s current certification on the ITD driver records page before signing. ALCOLOCK is not on the current Idaho certified list.
What an interlock costs in Idaho
| Installation (one time) | $70–150 |
| Monthly lease + monitoring | $60–100 |
| Removal | $50–75 |
| ITD reinstatement fee (DUI conviction) | $285 |
| ITD reinstatement fee (ALS/refusal) | $245 |
Over a 1-year first-offense term, expect roughly $900–1,400 in device costs before ITD fees. Estimate your exact cost →
How to get installed — 5 steps
- During your 30-day absolute suspension, call an ITD-certified provider and book your installation appointment for as soon as the suspension ends — don’t wait until day 30.
- On or within 10 days after your suspension ends, bring your vehicle and court documents to the provider. Installation takes 60–90 minutes.
- Your provider submits proof of installation to ITD. Under the 2026 law change, your 1-year restriction ends exactly 1 year from this submission date.
- Pay the ITD reinstatement fee ($285 for a DUI conviction; $245 for ALS/refusal) to restore your driving privileges.
- Serve the full 1-year term. Any lockout event (0.025+ BAC) is now reported to the prosecutor — keep every calibration appointment and don’t attempt a start after drinking.
Violations and the 2026 reporting change
Effective July 1, 2026, Idaho vendors are required to report any lockout event (a startup attempt at 0.025 BAC or higher) to the prosecutor. This is a significant change — lockout reports can now be used to support probation violation proceedings, which carry their own consequences separate from the IID program. There is no statutory automatic time-extension schedule for IID violations, but a probation violation finding by the court can result in additional supervision, fines, or jail time. Keep a clean record for the full term.