DUI in Idaho: License, SR-22, and IID Priority Order Explained

First-offense standard DUI in Idaho triggers a 90-day administrative license suspension for drivers 21 and older who provide a breath sample, or 180 days for refusal. If your BAC measured 0.20% or higher (excessive DUI), the suspension extends to 1 year regardless of breath compliance. SR-22 filing runs for 3 years from your criminal conviction date for first-offense DUI. This period is independent of your suspension length. If your conviction occurs 45 days after arrest, your SR-22 clock starts 45 days after your suspension clock — they do not run concurrently from the same date. Ignition interlock duration depends on conviction class and prior offenses. First-offense standard DUI requires IID for 1 year minimum. Excessive DUI (0.20% BAC or higher) requires 1 year minimum. Second offense within 10 years requires 2 years minimum. The IID period begins the day your restricted license is issued, not the day you're convicted or the day your suspension ends. Most drivers lose 30-60 days of potential driving time waiting for IID installation appointments after suspension ends.

Complete your criminal court sentencing first. Your SR-22 filing requirement and IID mandate come from the court order, not the DMV suspension. Until sentencing is final, you cannot begin the SR-22 or interlock compliance process. Apply for SR-22 filing immediately after sentencing. Contact a non-standard carrier that writes post-DUI policies in Idaho: Bristol West, Dairyland, GAINSCO, The General, or Safe Auto. Mainstream carriers like State Farm and Geico will file SR-22 for existing customers but typically non-renew at your next term. Your insurer electronically files the SR-22 certificate with Idaho Transportation Department within 24-48 hours of policy purchase. Do not wait until your suspension ends to file — your 3-year SR-22 clock starts at conviction whether you're driving or not. Schedule ignition interlock installation 2-3 weeks before your suspension end date. Idaho-approved IID vendors include Intoxalock, LifeSafer, Smart Start, and Guardian Interlock. Installation takes 90-120 minutes and costs $75-$125. You must present the vendor's installation certificate when applying for your restricted license. Without this certificate in hand, Idaho Transportation Department will not issue your reinstatement even if your suspension period has ended and your SR-22 is on file.

Idaho requires continuous SR-22 coverage for the full 3-year period with zero lapses. If your policy cancels for non-payment or you drop coverage, your insurer notifies Idaho Transportation Department electronically within 24 hours. ITD suspends your license immediately — no grace period, no warning letter. Reinstating after an SR-22 lapse requires filing a new SR-22 certificate and paying a $25 reinstatement fee. More critically, the lapse resets your 3-year SR-22 clock to zero in most cases. If you lapse 28 months into your 3-year requirement, you do not owe 4 months remaining — you owe a new 3-year period from the date of reinstatement. Idaho does not prorate SR-22 filing periods. A single-day lapse carries the same reset penalty as a 6-month lapse. This rule catches drivers who switch carriers without maintaining overlap coverage. If your old policy cancels on the 15th and your new policy starts on the 16th, you've triggered a lapse and a clock reset.

Post-DUI SR-22 insurance in Idaho typically costs $140-$240/mo for state minimum liability coverage, compared to $55-$85/mo for drivers with clean records. The SR-22 filing itself adds $25-$50 annually, but the DUI conviction multiplies your base premium by 2.5-3.5x depending on your BAC level and prior violations. Excessive DUI (0.20% BAC or higher) costs more to insure than standard first-offense DUI. Carriers view excessive BAC as higher actuarial risk. Expect rates 15-25% higher than standard DUI with the same coverage limits. Second-offense DUI within 10 years pushes most drivers into assigned risk pools where premiums can reach $350-$450/mo for minimum coverage. Idaho requires 25/50/15 liability minimums: $25,000 bodily injury per person, $50,000 per accident, $15,000 property damage. Buying only these minimums leaves you personally liable for damages exceeding those caps. If you cause a $75,000 injury accident, you're personally responsible for the $50,000 gap above your policy limit. Estimates based on available industry data; individual rates vary by driving history, vehicle, coverage selections, and location.

Idaho allows IID removal only after completing your court-ordered interlock period with zero violations. The device logs every start attempt, failed breath test, and tamper event. Your interlock vendor submits monthly compliance reports to Idaho Transportation Department and your probation officer. A single failed rolling retest during your IID period extends your requirement by 6 months from the violation date. Rolling retests occur randomly while driving, typically every 30-60 minutes. If you fail the retest, you have 5 minutes to pull over safely and shut off the engine. Continuing to drive with a failed rolling retest counts as a violation and triggers the 6-month extension. After completing your IID period with clean reports, you must petition the court for removal authorization. ITD does not automatically release you from the requirement when your time is served. Your attorney files the petition, the court reviews your compliance reports, and issues a removal order. Only then can you schedule device uninstallation. This administrative process adds 2-4 weeks to your actual removal timeline.

Drivers commonly assume their SR-22 requirement ends when they complete their IID period and receive an unrestricted license. Idaho's SR-22 filing period runs for 3 years from conviction regardless of license status. If you're convicted on March 15, 2024, your SR-22 filing must remain active until March 15, 2027, even though your 90-day suspension ends June 13, 2024, and your 1-year IID requirement ends sometime in 2025 after reinstatement. The SR-22 period outlasts both other requirements by 1-2 years. Dropping SR-22 coverage early because your license shows "valid" status triggers immediate suspension and resets your 3-year clock. Idaho Transportation Department tracks SR-22 end dates independently of license restrictions. You must maintain continuous coverage until you receive written confirmation from ITD that your SR-22 obligation has been satisfied.