Montana DUI Costs (2026)
State-specific DUI cost calculators, law summaries, and guides for Montana.
Calculate your Montana DUI costOn our estimates, a typical first-offense DUI in Montana costs about $20,577, the 19th highest of the 50 states (median of our state estimates: $17,615). Use the calculators below for your own situation.
Montana DUI Key Facts
Montana DUI Calculators
Montana DUI FAQ
How much does a DUI cost in Montana?
Add up the fine ($600-$1,000), attorney fees (our estimate: $2,500-$10,000), insurance, ignition interlock, education, reinstatement and time off work, and our calculator puts a typical first-offense DUI in Montana at about $20,577, within a range of $9,831 to $32,910, using its default answers. Use the calculator for an estimate based on your own situation.
What is the legal DUI term in Montana?
Montana uses the term "DUI" for impaired driving offenses. The legal BAC limit is 0.08% for adults, with enhanced penalties at 0.16% BAC.
How long is your license suspended for a first DUI in Montana?
A first-offense DUI in Montana carries a license suspension of 180 days, and a second offense carries a license suspension of 1 year (365 days). Whether you can keep driving on a restricted license during that time is covered below.
Is an ignition interlock device required in Montana?
Our Montana data shows no interlock requirement for a first-offense DUI. A second offense requires 12 months of IID.
Does Montana require SR-22 insurance after a DUI?
Yes. Montana requires SR-22 high-risk insurance filing for 3 years following a DUI conviction. We estimate the typical premium increase at 60-200%.
When does a DUI become a felony in Montana?
In Montana, a DUI becomes a felony on the fourth offense within 10 years. Other factors, such as an injury, can also change how a case is charged; an attorney can tell you how they apply in Montana.
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. Our estimate of the cost to petition: $100-$300.
How long do you have to request a license hearing after a DUI arrest in Montana?
In Montana, you have 30 days from the date of the suspension notice to ask a court to review the license suspension if you refused the chemical test (MCA 61-8-1017(1)). The notice you received at arrest gives the exact date.
How long does Montana have to charge you with a DUI?
In Montana, the state generally must file DUI charges within 1 year of the alleged offense. This deadline reflects a first-offense misdemeanor DUI; felony cases can carry a different filing window. If you are charged, an attorney can confirm how the deadline applies to your case.
Can you get a hardship or restricted license after a DUI in Montana?
Montana generally offers a hardship or restricted license that can let you keep driving for work, school, or treatment during part of a DUI suspension. Eligibility and conditions depend on your offense level and the court, so confirm the current rules for your situation.
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