Montana DUI Felony vs. Misdemeanor Calculator 2026
State-specific DUI cost estimates for Montana, including fines, attorney fees, SR-22 insurance, ignition interlock, and more.
Your Montana DUI estimate will appear here
Answer the questions and press the button. You will get a low, typical and high figure, with each cost listed on its own line.
- Uses this state's own fines, suspension and interlock rules
- Market costs such as attorney fees are labelled as estimates
- Free, and nothing to sign up for
Montana DUI FAQ
How much does a DUI cost in Montana?
Attorney fees for a first-offense DUI in Montana typically run $2,500 to $10,000 on our estimates, and the fine is $600 to $1,000 before court costs. Adding insurance, interlock, education, reinstatement and lost time from work, our calculator puts a typical first offense at about $20,577 (range $9,831 to $32,910) with its default answers; the median of our 50 state estimates is $17,615.
How long is your license suspended for a first DUI in Montana?
A first-offense DUI conviction in Montana carries a license suspension of 180 days. A hardship or restricted license may be available during this period.
Is an ignition interlock device required in Montana for a first DUI?
Our Montana data shows no interlock requirement for a first-offense DUI.
How long is SR-22 insurance required after a DUI in Montana?
Montana requires SR-22 high-risk insurance filing for 3 years following a DUI conviction.
Can a DUI be expunged in Montana?
Montana allows DUI expungement under certain conditions, typically after a waiting period of 5 years following completion of your sentence.
Montana DUI figures this calculator uses
- Felony at offense number
- 4
- Lookback period for prior offenses
- 10 years
- Fine, third DUI
- $2,500 to $5,000
- High-BAC penalty tier
- 0.16% and above
Statutory figures were checked against Montana law (primary source) and last verified May 2026. Typical ranges are market estimates, not law; see our methodology.
Worked example
With the calculator's default answers (offense number: First offense; bac level at arrest: 0.10%; aggravating factors present: None):
| Cost | Typical |
|---|---|
| Misdemeanor Defense Attorney Fees | $6,250 |
| Misdemeanor Fines and Court Costs | $1,200 |
| Estimated total (range $3,380 to $11,480) | $7,450 |
Change the answers in the calculator above to see your own estimate.
On our estimates, a typical first-offense DUI in Montana comes to about $20,577, the 19th highest of the 50 states. The median of our 50 state estimates is $17,615. These come from the total-cost calculator with its default answers, not from a national survey.
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Montana DUI Total Cost Calculator →Montana DUI Overview
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