March 4, 2026
How Long Does a DUI Stay on Your Record in Idaho?
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(208) 344-0994
If you have been charged with a DUI, knowing how the state DUI laws work is the first step. Idaho takes DUI offenses seriously, and the consequences of a conviction extend well beyond fines and jail time. Under state law, driving under the influence covers both impairment-based violations, where your ability to drive is actually affected, and per se violations, where your blood alcohol concentration alone triggers the charge regardless of whether you appeared impaired.
At Martens Law Office, our Boise DUI lawyers defend clients against DUI charges throughout Idaho. If you are facing DUI charges, call us at (208) 344-0994 to speak with a criminal defense attorney.
Idaho’s DUI law is set forth in Idaho Code § 18-8004. Under this statute, it is unlawful for any person to drive or be in actual physical control of a motor vehicle while under the influence of alcohol, drugs, or any intoxicating substance, or while having a blood alcohol concentration (BAC) at or above the legal limit.
To obtain a DUI conviction, the prosecution must generally prove that the individual was operating or in actual physical control of a vehicle in a public place or on a roadway open to the public, and that either their BAC exceeded the legal limit or their ability to safely operate the vehicle was impaired by alcohol or drugs.
Idaho law sets different BAC thresholds depending on the type of driver:
Exceeding these limits is a per se violation, meaning the BAC reading alone is sufficient for a charge without any additional evidence of impaired driving.
Law enforcement uses breath, blood, and urine testing to measure BAC. Breathalyzer tests are the most common at the roadside and booking stage, while blood or urine tests are used when greater accuracy is needed or when drug impairment is suspected.
Idaho’s implied consent law means that by driving on Idaho roads, you have already consented to BAC testing if lawfully arrested for DUI. Refusing a test carries its own consequences, including an automatic license suspension that is separate from and in addition to any criminal penalties.
Not all DUI charges are the same. Idaho law recognizes several categories:
A DUI arrest in Idaho typically begins with a traffic stop where the officer observes signs of impairment. If the officer has probable cause, you may be asked to perform field sobriety tests and submit to a breath test. If arrested, you will be booked, and your vehicle may be impounded.
After booking, most first-time offenders are released on bail or their own recognizance. You will receive a court date for your criminal case, but there is also a separate administrative process running simultaneously through the Idaho Transportation Department.
The administrative license suspension, or ALS, is separate from the criminal case and moves quickly. If you fail a BAC test or refuse one, your license will be suspended automatically. You have only seven days from the date of arrest to request a hearing to challenge the suspension. Missing that window means the suspension goes into effect without any opportunity to contest it. Suspension periods vary depending on whether you failed the test or refused it, and whether it is a first or subsequent offense.
Understanding how DUI penalties escalate in Idaho is critical if you’ve been charged. At Martens Law Office, we help clients navigate these charges and work to minimize the long-term impact on their lives, licenses, and records.
A first-time DUI in Idaho is a misdemeanor carrying up to six months in jail, fines of up to $1,000, and a license suspension of 90 to 180 days. Probation, an alcohol evaluation, and completion of an alcohol education or treatment program are common conditions as well. A first offense is serious, but with the right defense, outcomes can often be improved significantly.
A second DUI within ten years carries mandatory minimum jail time of ten days, with a maximum of one year. Fines increase to up to $2,000, and the license suspension extends to one year. The court may also require an ignition interlock device upon reinstatement.
A third DUI within ten years is charged as a felony in Idaho. A felony DUI conviction can mean up to ten years in prison, fines of up to $5,000, and a license suspension of one to five years. The long-term consequences of a felony on your record are severe and affect employment, housing, and civil rights.
If your BAC was 0.20% or higher, you face enhanced mandatory minimums even on a first offense. A first excessive DUI carries a mandatory minimum of ten days in jail, with fines and suspension periods exceeding those of a standard first offense. These enhanced penalties exist regardless of whether your driving appeared impaired.
An aggravated DUI charge arises when a DUI causes injury to another person. This is a felony offense carrying up to fifteen years in prison, substantial fines, and restitution to the victim. Aggravated DUI cases are among the most serious driving offenses prosecuted in Idaho, and the consequences of a conviction are life-altering.
A DUI charge is not the same as a conviction. There are several defenses available depending on the facts of your case, including:
Idaho’s expungement laws are among the most limited in the country. In most cases, a DUI conviction cannot be expunged from your record. Idaho does not have a general expungement statute that allows adults to clear criminal convictions after a period of good behavior.
That said, there are some important distinctions. If your DUI charge was dismissed or you were acquitted, you may be eligible to have the arrest record sealed. Additionally, Idaho courts sometimes grant a withheld judgment on a first offense, which, if successfully completed, may allow for a dismissal of the charge rather than a conviction. This is one of the most valuable outcomes available in a first-time DUI case and a strong reason to have an attorney fighting for you from the start.
DUI cases involve technical evidence, strict procedural rules, and administrative deadlines that can permanently affect your driving privileges if missed. An experienced Boise DUI attorney understands how to challenge the state’s evidence, negotiate with prosecutors, and protect your rights at every stage of the process. Going through this alone, or with an attorney who does not regularly handle DUI cases, may significantly reduce your chances of the best possible outcome.
At Martens Law Office, we handle all levels of DUI defense, from standard first offenses to felony aggravated DUI charges. We know Idaho DUI law inside and out, and we put that knowledge to work for every client we represent.
A DUI charge in Idaho demands a serious, immediate response. The sooner you have an attorney involved, the more options you have. Contact Martens Law Office at (208) 344-0994 today to schedule a consultation with a Boise DUI defense lawyer. We are ready to help.
