Statute of Limitations for General Personal Injury / Negligence in Montana

6 min read

Published April 8, 2026 • By DocketMath Team

Overview

Run this scenario in DocketMath using the Statute Of Limitations calculator.

Montana’s general statute of limitations for a personal injury or negligence claim is 3 years under Montana Code Annotated (MCA) § 27-2-102(3).

In other words, if you’re suing for harm caused by someone else’s negligence (for example, a motor vehicle crash, a slip-and-fall, or similar injury claims), the default rule is a 3-year deadline—not a shorter or longer one—unless a specific exception applies. DocketMath’s statute-of-limitations calculator helps you translate that general 3-year period into relevant dates for your situation.

Note: This article covers the general/default limitation period. Some cases can involve special accrual rules, procedural timing issues, or claim types with different deadlines. Use DocketMath to start from the general rule and then adjust for any case-specific timing factors you identify.

Limitation period

The general SOL period is 3 years. MCA § 27-2-102(3) sets that default timeframe for personal injury actions arising from negligence and similar harm.

What “3 years” means in practice

A “3-year” statute of limitations generally means:

  • You must file your lawsuit no later than 3 years from the date your claim accrues.
  • In many everyday personal injury situations, people treat the date of injury as the accrual date—because that’s often when the harm occurs and the claim becomes actionable.

That said, the exact accrual date is not always obvious. It can be affected by when your injuries were discovered (or should have been discovered) and other timing doctrines. DocketMath lets you enter an accrual date you believe applies (commonly the injury date) and see the corresponding deadline.

Quick example (general rule)

If your injury occurred on:

  • January 10, 2026, then the general 3-year period would generally point to a filing deadline around January 10, 2029 (subject to accrual nuances and any applicable exceptions).

For a date-specific calculation, use the DocketMath calculator at /tools/statute-of-limitations.

Key exceptions

Montana’s general personal injury limitation period is 3 years, but outcomes can change when timing rules or exceptions apply. The key practical point is that the “clock” may not always start on the date people first assume.

1) Claim accrual can shift

Even with MCA § 27-2-102(3) providing the baseline period, when the clock starts may differ depending on accrual rules. For instance, in some circumstances injuries may manifest later, or facts may take time to become known.

DocketMath can help you model different accrual dates (for example, date of injury vs. date symptoms first became apparent) and compare how deadlines move.

2) Tolling (pauses/holds) may apply in certain circumstances

Some legal doctrines can effectively pause the limitations clock. Because tolling depends heavily on the specific facts and legal basis, this is a good area to verify based on your situation.

In practice, if tolling applies, the final deadline may fall later than a simple “injury date + 3 years” calculation.

3) Procedural timing can matter

Even if you’re within the right number of years, real-world litigation timelines can be affected by procedural details. A limitations problem often turns on what counts as a “file” date and when a case is treated as timely filed—not just the calendar year.

Warning: Missing a statute of limitations deadline can seriously limit (or bar) your ability to proceed. Treat the calculated date as a filing target you work toward well before the deadline, not as a “wait until the last day” instruction.

4) Not every “injury” claim is governed by the same rule

This guide is focused on the general personal injury / negligence default period. If your matter involves different legal theories or falls outside the default pattern, a different statute or timing rule could control. If you’re unsure, re-check the applicable statute and consider updating your inputs accordingly.

Statute citation

Montana Code Annotated § 27-2-102(3) provides the general 3-year limitation period for personal injury actions, including those arising from negligence-based harm.

DocketMath uses that general rule as the starting point for its statute-of-limitations workflow in US-MT. Since this page is about the default period, the calculator is best used to map timelines around the baseline 3-year SOL, and then adjust if you identify any case-specific accrual or exception factors.

How the citation connects to your deadline

When you enter dates into DocketMath, the tool essentially implements the timeline implied by MCA § 27-2-102(3):

  • Start point: your selected accrual date (often the injury date)
  • Duration: 3 years
  • Output: an estimated last day to file under the general rule

If you later confirm an exception (such as a different accrual date or tolling), you can re-run the calculator with adjusted inputs to see how the “deadline” shifts.

Use the calculator

Get your deadline using DocketMath’s statute-of-limitations calculator: /tools/statute-of-limitations.

Here’s how to use it effectively, including how your inputs affect outputs:

Step-by-step

  1. Select jurisdiction: Montana (US-MT).
  2. Choose the claim type: personal injury / negligence (general default).
  3. Enter the accrual date you want to model. Common options include:
    • Date of injury
    • Date symptoms first appeared
    • Date you believe the claim became actionable
  4. Review the computed deadline, based on 3 years under MCA § 27-2-102(3).

What to expect when you change dates

Because the general rule is 3 years, changing the accrual date typically shifts the deadline by the same amount.

For example:

Accrual date you enterGeneral SOL end date (approx.)
Jan 10, 2026Jan 10, 2029
Feb 1, 2026Feb 1, 2029
Mar 15, 2026Mar 15, 2029

This is useful for comparing timing assumptions before you build a filing plan.

Practical output tips

  • Use the calculated “last day” as a deadline to aim for, not a reason to delay.
  • If you’re unsure whether accrual should be the injury date or a later discovery-related date, run both scenarios and compare the results.

Sources and references

Start with the primary authority for Montana and confirm the effective date before relying on any output. If the rule has been amended, update the inputs and rerun the calculation.

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