Montana Accident Report: Deadlines, Filing, and Penalties

In Montana, a car accident has to be reported when it causes injury, death, or property damage of $1,000 or more. A Montana accident report actually involves two separate duties: you must notify law enforcement immediately from the scene, and — unless an officer investigates and files a crash report — you must submit a written report to the Montana Department of Justice within 10 days. Skipping either step is a misdemeanor. Leaving the scene of a crash that hurt someone can be a felony.

When Reporting Is Required

The reporting rules under Montana’s Uniform Accident Reporting Act apply whenever an accident results in:

Injury to any person,
Death, or
Apparent property damage of $1,000 or more.¹

Pay attention to the wording. The notice statute uses “$1,000 or more,” so damage that hits exactly $1,000 triggers the duty. If you’re standing on the roadside trying to eyeball whether a crumpled bumper and a cracked grille clear that line, make the call. A phone call costs nothing. A missed report can cost hundreds of dollars and jail time.

What You Must Do at the Scene

Before any reporting obligation comes into play, Montana requires you to stop at the scene — or as close to it as you safely can — and stay there. Under MCA 61-7-103, this duty applies any time you know or reasonably should know you’ve been in an accident involving another person.²

Once stopped, give your name, address, and vehicle registration to the other driver or to any officer at the scene. If anyone is hurt, you also have to arrange reasonable medical help: calling 911, or transporting the injured person to a hospital if no ambulance is available.³

Driving off without doing these things is what most people mean by a hit-and-run, and Montana penalizes it far more severely than any late paperwork.

Immediate Notice to Law Enforcement

Once you’ve stopped and exchanged information, the next duty is to notify law enforcement. MCA 61-7-108 requires contact “immediately by the quickest means of communication” — in practice, a phone call — whenever the accident meets the injury, death, or $1,000-damage threshold.¹

Who you call depends on where the crash happened:

Inside a city or town: the local police department.
On a rural road or highway: the county sheriff’s office or the nearest Montana Highway Patrol office.¹

The 10-Day Written Report

The phone call is one obligation. The written report is another. Under MCA 61-7-109, you must file a written accident report with the Montana Department of Justice within 10 days of any accident involving injury, death, or property damage exceeding $1,000.⁴

When You Don’t Have to File

There’s one exception many drivers miss. You don’t have to file your own written report if a law enforcement officer already investigated the accident and submitted a crash report. If an officer responded, took statements, and filed, you’ve likely satisfied this requirement. If no officer investigated — you exchanged information at the roadside and both parties drove off — the 10-day clock is yours to manage.⁴

What the Report Must Contain

The Montana Highway Patrol uses a standardized crash report form, available through its website or through local law enforcement offices.⁵ The report must give the department enough detail to decide whether you need to post a security deposit under Montana’s safety responsibility laws. In practice, that means your insurance information, a description of the accident, the other parties involved, and the extent of damage or injuries. Supporting documents like repair estimates or medical records can help, though the statute doesn’t require them.⁴

Where to Send It

The written report goes to the department, not to your local police or county sheriff. The Montana Highway Patrol accepts written crash reports by mail at:

Montana Highway Patrol
PO Box 117
Boulder, MT 59632⁵

Can the Report Be Used Against You?

Here Montana law does something that surprises many drivers: the written report you file under MCA 61-7-109 cannot be used as evidence in any civil or criminal trial arising out of that accident. The statute says so explicitly.⁴ MCA 61-7-114 reinforces this by making required accident reports and supplemental reports confidential and “without prejudice” to the person filing them. The point is to encourage honest reporting without turning every word into courtroom ammunition.

The protection has limits. It covers the written report itself. It does not cover an officer’s independent investigation, witness statements, photographs, or anything you said to police at the scene. The underlying facts of the accident remain fair game.

Penalties for Not Reporting

Montana’s penalties for accident-related violations sit in MCA 61-7-118, and they escalate sharply depending on what you failed to do and whether anyone was hurt.⁶

Reporting Violations With No Injuries

Failing to give immediate notice, failing to file the written report, or otherwise violating the Uniform Accident Reporting Act is a misdemeanor. The penalty tiers run by convictions within a single year:

First offense: $200 to $300 fine, or up to 20 days in jail.
Second offense within one year: $300 to $400 fine, up to 30 days in jail, or both.
Third or subsequent offense within one year: $400 to $500 fine, up to 6 months in jail, or both.⁶

Leaving the Scene of an Injury Crash

If you leave the scene or fail to stop and provide information as required by MCA 61-7-103 or 61-7-105, and someone was injured, the exposure jumps: 30 days to one year in jail, a fine of $100 to $5,000, or both.⁶

Leaving the Scene of a Serious Injury or Fatal Crash

Leaving the scene of an accident involving serious bodily injury or death is no longer a misdemeanor. It’s a felony: one to 10 years in state prison, a fine of up to $50,000, or both. On conviction, the department will also revoke your driver’s license.⁶

The gulf between a $200 fine for a late report and a decade in prison for fleeing a fatal crash is deliberate. Montana treats walking away from the consequences of a serious accident as a different kind of wrong than missed paperwork.

Getting a Copy of a Crash Report

Crash reports in Montana are confidential records. The Montana Highway Patrol, which maintains them, will usually only give out a crash report number by phone or email. To get the actual report, you typically submit a formal written request to the MHP Crash Records unit with details like the date and location of the accident and the names of the parties involved.⁷

Access is limited by the confidentiality rules in MCA 61-7-114. Law enforcement, attorneys involved in related litigation, and insurance companies generally have stronger grounds for access than the general public. If you were a party to the accident, you can usually obtain a copy of the officer’s crash report, but expect to put the request in writing.

1
Montana State Legislature. Montana Code 61-7-108 – Immediate Notice of Accidents
2
Montana State Legislature. Montana Code 61-7-103 – Accidents Involving Another Person or Deceased Person
3
Montana State Legislature. Montana Code 61-7-105 – Duty to Give Information and Render Aid
4
Montana State Legislature. Montana Code 61-7-109 – Written Reports of Accidents Additional Information Form of Report
5
Montana Department of Justice. Montana Highway Patrol Vehicle Crash Report
6
Montana State Legislature. Montana Code 61-7-118 – Penalty for Violation
7
Montana Department of Justice. Crash Records