A second DUI in Idaho is generally classified as a misdemeanor (within 10 years; felony if two excessive within 5).
Jail: 10 days (5 consecutive) – 1 year; mandatory min 10 days
Fine: $0–$2,000
License suspension: 1-year absolute suspension – 1 year; hardship: no restricted during absolute; IID after
Ignition interlock: Required — IID 1 year post-suspension.
Lookback period: 10 years. 10-year window for standard second-offense enhancement; 5-year window for the excessive-DUI felony escalation; third within 10 = felony.
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