Drivers Under 21
MCA 61-8-1007 — 0.02 or any THC, $100 to $500, and a 90 day suspension the first time
A driver under 21 commits the offense with an alcohol concentration of 0.02 or more, or any amount of THC in the body as shown by a blood test.
Who handles this in Montana: State Bar of Montana, Licensed Lawyer Montana; and legal aid programs and the state offices, listed in the Montana directory.
| Conviction | Fine | License suspended |
|---|---|---|
| ConvictionFirst | Fine$100 to $500 | License suspended90 days |
| ConvictionSecond | Fine$200 to $500, and up to 10 days at 18 or older | License suspended6 months |
| ConvictionThird or later | Fine$300 to $500, and 24 consecutive hours to 60 days at 18 or older | License suspended1 year |
Sources for this section (2)
- MCA 61-8-1002 — Driving under influence
- MCA 61-8-1007 — Penalty for driving under influence -- first through third offenses
Legal information, not legal advice. Verified as of October 2026. Applying it to a particular situation is the work of a licensed Montana attorney.