What Montana requires
Montana takes a lighter path: the mandate stops at 25/50/20 liability, so medical bills after a crash route through health coverage, the other driver's liability policy, or first-party options you add yourself. Everything past that floor - UM, MedPay, collision - is left to the driver, and plenty of Montana drivers skip it.
| Coverage | Montana minimum | Required? |
|---|---|---|
| Bodily injury liability | $25,000 / $50,000 | Yes |
| Property damage liability | $20,000 | Yes |
| Uninsured motorist | None | No - optional, buy it anyway |
| Personal injury protection | None | No |
| Medical payments | None | No - optional add-on |
After a stop you will show an insurance card, digital or plastic, while Montana's electronic checks confirm the policy directly with your carrier. Montana runs the 51-percent bar: the clean line between a reduced claim and no claim.
Montana distances stretch claims: on I-90 and US-2 the nearest body shop or adjuster can be an hour out, and winter closures over Rogers Pass strand vehicles for hours. Wildlife collisions peak at dawn and dusk - elk and deer totals cluster around Billings and the Missoula valleys.
Fault rules after a Montana crash
The Montana bar is binary at the margin: a jury instruction saying 51 percent closes the case, while 49 percent leaves a reduced but real recovery on the table - which is why both carriers fight the first points of fault.
In an at-fault state the liability carrier for whoever caused the crash writes the check, which is why 25/50/20 minimums on the other driver's policy cap what you can collect from them. UM coverage picks up where an uninsured driver cannot.
DUI/DWI filings and Montana insurance costs
Impaired-driving cases in Montana end with the state asking for proof you will carry coverage going forward - the SR-22 filing is that proof, and dropping the policy mid-filing pulls the license with it. Expect the premium to jump in the same breath: insurers re-rate DUI/DWI records as a top risk signal.
- Never let coverage lapse even for a day: a gap shows on your record and reprices the next policy for far more than the premium you saved.
- Bundle with one insurer only when the bundle total beats separate quotes - a multi-policy discount rarely beats shopping each line on its own.
- Ask for telematics or low-mileage pricing - a clean app-tracked few months routinely beats a static quote.
- Re-shop at every renewal instead of every few years; the carrier cheapest last year is frequently third today.
- Check your state insurance department's complaint page before you file - a regulator's name in the letter gets a stalled claim moving.
Car insurance costs in Montana
Montana averages roughly $1265 annually for full coverage: mid-range by national standards, with the usual spread between metro zips and quiet counties. Quotes in Billings run above what Great Falls and the rural counties pay - ZIP code moves the number as much as your record.
The figure blends every driver in the state: teens and tickets pull it up, clean records and higher deductibles pull it down. The same driver can still see carriers land thousands apart on one profile.
The 51-percent fault bar draws Montana's line, while UM and PIP stay outside the mandate - a Western pattern where the state keeps the floor low and the paperwork light. Carrier filings at registration do the enforcement work, and the Commissioner's office handles rate filings and market-conduct complaints.
Cheaper premiums in Montana
- Before a rental or road trip, check the credit card you already carry for rental coverage - duplicate counter coverage is the most common insurance overlap.
- Ask about claims-free and loyalty credits at renewal: long-standing customers keep discounts they never re-applied for.
- Take a defensive-driving course: many carriers apply the course credit on top of your record.
- Pay the term up front when installment fees stack - six monthly payments often cost more than one.
- Move liability up from the floor before anything else: higher limits rarely cost what people fear.
Claims handling, rate filings and cancellations all run through Montana Commissioner of Securities and Insurance - a complaint filed there changes how fast an insurer answers. The official sources above carry the current rulebook; check them before you buy.
Montana's market is agent-driven and spread thin: Billings, Missoula and Great Falls offices serve wide rural territories, and one agency may write policies across several counties. Long annual miles show up in quotes more than in neighboring metros, and seasonal vehicles get adjusted twice a year as a habit.
After a Montana crash: who pays, in order
File against the at-fault driver in Montana, keep your own collision deductible in play, and let the two insurers settle who owes what: your carrier advances, then subrogation pulls the deductible back if the liability case lands.
If the at-fault driver carries nothing in Montana and you skipped UM, the math turns harsh fast: direct lawsuit against an uninsured driver, or your own collision deductible and medical coverage doing the work UM would have done.
What the Montana floor quietly leaves you holding
Run the numbers on one injury: a $90k medical case versus a 25k per-person limit is a $65k hole in Montana, and the cap does not care how the bills were split. Under Montana's modified comparative rule your own share cuts the award first: at 40 percent fault you collect 60 percent of what survives the cap - and at 51 percent you collect nothing.
The cheap fix happens before a claim: raise the liability limits. Moving Montana policies off the floor to 100/300 costs tens a month at most - far less than the gap above - and adding UM at the new limits closes the uninsured-driver hole for a few dollars more.
Related pages
- Non-owner car insurance
- Liability limits: how much you need
- How car insurance works
- Auto Insurance in Illinois
- Auto insurance hub
Frequently Asked Questions
What are Montana's car insurance minimums?
25/50/20 - $25,000 for each injured person, $50,000 per crash, and $20,000 for damage you do to others. The required package adds what the state mandates on top: the state layers nothing else on top.
Is Montana a no-fault state?
No - Montana is at-fault (tort): the driver who caused the crash carries the liability, and your own insurer pays only for the parts of the policy you chose to add.
How does fault work after a Montana crash?
Modified comparative at 51 percent: your award shrinks dollar for dollar with your share of blame while you stay at or under 50 percent, and vanishes completely at 51.
How much does full coverage cost in Montana?
The Montana state average lands near $1265 annually for full coverage: below the national figure. Minimum-only liability costs far less, but it is a different product - the collision and comprehensive pieces are what carry the premium.
Is Montana minimum coverage enough?
Rarely for a serious crash: the 25/50/20 floor ($25,000 per injured person) leaves a four-to-five-figure gap against a major injury claim, before lost wages. The state sets the legal floor, not the sensible one.
Last updated: 2026-10-20