First DUI Penalties in Idaho (2026)
Complete guide to what happens when you get your first DUI in Idaho — jail time, fines, license suspension, and what you can do about it.
Understanding First-Offense DUI in Idaho
A first-offense DUI in Idaho is classified as a Misdemeanor. While this is the least severe DUI charge, the consequences are still significant and can affect your life for years. Idaho uses a 10-year lookback period, meaning any subsequent DUI within that window will be treated as a repeat offense with harsher penalties.
Idaho has a 10-year lookback period and requires IID for all DUI convictions. A 3rd DUI in 10 years becomes a felony. The BAC (Blood Alcohol Concentration) limit in Idaho is 0.08% for standard drivers, 0.04% for commercial drivers, and 0.02% for drivers under 21. Being at or above these limits creates a "per se" DUI charge — the prosecution does not need to prove impairment.
Penalties Breakdown
What Happens After a First DUI Arrest in Idaho
After being arrested for a first DUI in Idaho, you will face two separate proceedings: a criminal court case and an administrative license suspension through the DMV. Idaho has implied consent laws, meaning you automatically consent to chemical testing by driving on state roads. Refusing a test triggers additional penalties.
The criminal case will determine whether you are convicted and what sentence you receive. Meanwhile, the DMV will independently suspend your license. In many cases, you have only 10 to 30 days to request a DMV hearing to challenge the suspension. Missing this deadline means an automatic suspension.
How a DUI Attorney Can Help
An experienced DUI attorney in Idaho can challenge the traffic stop, question the accuracy of breath or blood tests, negotiate reduced charges (such as a "wet reckless"), protect your driving privileges, and minimize the long-term impact on your record. Attorney fees for a first DUI typically range from $2,000 to $5,000, but the savings in reduced penalties and protected employment can be far greater.
In Idaho, a first DUI may be eligible for expungement 5 years for misdemeanor, 10 years for felony. An attorney can advise you on the specific requirements and timeline.
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Official Sources
DUIFinders.com is not a law firm and does not provide legal advice. Information is for general purposes only.
Frequently Asked Questions
What is the penalty for a first DUI in Idaho?
A first DUI in Idaho is classified as a Misdemeanor. Penalties include Up to 6 months jail time, Up to $1,000 in fines, and 90–180 day suspension.
Will I go to jail for a first DUI in Idaho?
Idaho does not have mandatory minimum jail for a first DUI, but the judge can sentence up to Up to 6 months.
How much does a first DUI cost in Idaho?
Court fines alone are Up to $1,000, but total costs including attorney fees, classes, insurance increases, and IID installation typically range from $10,000 to $25,000.
Will I lose my license for a first DUI in Idaho?
Yes. A first DUI in Idaho results in 90–180 day suspension. You may be eligible for a restricted license with an ignition interlock device.
Can a first DUI be expunged in Idaho?
Yes, Idaho allows DUI expungement. Waiting period: 5 years for misdemeanor, 10 years for felony.