Idaho DUI Laws
Idaho DUI Defense
What you're facing, what the deadlines are, and the questions your attorney needs to answer, specific to Idaho (ID) law.
BAC Limit
0.08
Enhanced BAC
0.20
Higher penalties above this
Lookback Period
10 years
Prior offenses count within
7 days-Day DMV Hearing Deadline
In Idaho, you have 7 days days from your arrest to request an administrative DMV hearing. Miss this deadline and your license suspension goes into effect automatically , even if the criminal case is later dismissed.
First Offense Penalties in Idaho
Implied Consent & Test Refusal
Like all 50 states, Idaho has an implied consent law, by driving on Idahoroads, you've already agreed to submit to a chemical test (breath, blood, or urine) if an officer has probable cause to believe you're impaired.
Refusal Penalty
1-year license suspension
Idaho-Specific Detail
Idaho's enhanced penalty threshold is 0.20, significantly higher than most states. The 7-day administrative hearing request deadline is one of the shortest in the country.
Is your Idaho DUI defense on track?
The Masked Researcher’s First Read checks 10 critical defense behaviors specific to DUI cases. Takes 2 minutes. Instant results.
Take the Free Defense ScoreDUI Defense Playbook — $127
26 questions that change how your next attorney meeting goes, a case stage roadmap, red flag checklist, and a case progress scorecard. Instant PDF download — calibrated for Idaho DUI defendants.
Other Idaho defense topics
Facing a different charge in Idaho? Penalty ranges, enhancements, and defense questions for related crimes:
Important: This page provides general legal information about Idaho DUI laws as of the date of publication. Laws change frequently. This is not legal advice. For guidance specific to your case, speaking with a Idaho-licensed attorney is one option, or take the free Masked Researcher’s First Read to see where your case stands.