Idaho DUI Laws & Penalties (2026)
Idaho has a 10-year lookback period and requires IID for all DUI convictions. A 3rd DUI in 10 years becomes a felony.
Idaho DUI Penalties
1st Offense
2nd Offense
BAC Limits in Idaho
📜 Expungement
DUI expungement is available in Idaho. Waiting period: 5 years for misdemeanor, 10 years for felony.
Expungement Guide →💰 Estimated Total Cost
A first DUI in Idaho typically costs $10,000-$25,000+ including fines, attorney, classes, IID, and insurance increases.
Calculate Your Cost →Find a DUI Attorney in Idaho
Connect with experienced DUI lawyers in Boise, Meridian, Nampa, and across Idaho.
Idaho DUI Deep Dives
🚨 First Offense Penalties
Complete guide to what happens on your first DUI in Idaho.
🍺 BAC Limit
Legal BAC limits for standard, commercial, and under-21 drivers.
💰 DUI Cost
Full cost breakdown: fines, attorney, classes, insurance, and more.
🔧 Ignition Interlock Cost
IID installation, monthly fees, and provider comparison.
🚫 License Suspension
Suspension length, restricted license options, and reinstatement steps.
🧮 Cost Calculator
Estimate your total DUI cost with our interactive tool.
Official Sources & References
- 📋 Idaho Code § 18-8004 — Idaho DUI statute
- 🚗 Idaho DMV — License suspension, reinstatement, IID requirements
- 📊 NHTSA Impaired Driving Data
- 🛡️ MADD — Mothers Against Drunk Driving
DUIFinders.com is not a law firm and does not provide legal advice. Information is for general purposes only. Consult a licensed attorney in Idaho for advice specific to your situation.
Idaho DUI FAQ
What is the BAC limit in Idaho?
The legal BAC limit in Idaho is 0.08% for regular drivers, 0.04% for commercial drivers, and 0.02% for drivers under 21.
What are the penalties for a first DUI in Idaho?
A first DUI in Idaho is a Misdemeanor. Penalties include Up to 6 months jail, Up to $1,000 in fines, and 90–180 day suspension license suspension.
Is an ignition interlock device required in Idaho?
Required for 1 year minimum
Can a DUI be expunged in Idaho?
Yes, DUI expungement is available in Idaho. Waiting period: 5 years for misdemeanor, 10 years for felony.
What is the lookback period for DUI in Idaho?
Idaho uses a 10-year lookback period to determine if an offense counts as a repeat offense.