In Montana, a creditor or debt collector generally has eight years to sue you on a debt founded on a written contract and five years to sue on an oral contract, an open account (such as a typical credit card), or an account stated. These deadlines come from Montana Code Annotated (MCA) § 27-2-202. That eight-year written-contract window is one of the longer limitation periods in the country, so Montanans cannot assume an old debt is automatically too stale to collect. Once the correct period passes, however, the expired statute of limitations becomes a complete defense to a collection lawsuit—but only if you raise it in court.
How long is the statute of limitations on debt in Montana?
The Montana statute of limitations depends on the legal nature of the debt, not on what a collector calls it. Under MCA § 27-2-202:
- Written contracts — 8 years. Any action on a contract, obligation, or liability founded on an instrument in writing must be brought within eight years. This typically covers signed loan agreements, written installment contracts, and many promissory notes.
- Oral contracts — 5 years. A contract, account, or promise that is not founded on a written instrument carries a five-year deadline.
- Open accounts and accounts stated — 5 years. An action on an open account, or on an account stated, must be brought within five years.
Credit card debt is the gray area that trips up most consumers. Depending on how the agreement and the lawsuit are framed, a court may treat it as an open account (five years) or argue it rests on a written cardholder agreement (eight years). Because collectors often plead whichever theory gives them more time, do not assume the longer period automatically applies. If a card account is involved, it is worth asking a Montana attorney how the specific account should be classified.
Promissory notes
A promissory note is a written promise to pay, so it generally falls under the eight-year written-contract period. Note, however, that special rules can apply to certain negotiable instruments and demand notes, so the accrual date and deadline can vary. When a note is involved, confirm the applicable rule rather than assuming a flat eight years.
When does the clock start in Montana?
The limitations period begins to run when the cause of action accrues—in plain terms, when the creditor first had the right to sue. For most consumer debts, that is the date of your first missed payment that was never cured, often described as the date of default or the date of the last payment before the account went delinquent. It is not the date you opened the account, and it is not the date the debt was sold to a collection agency.
This matters because debts are frequently bought and resold. A junk-debt buyer that purchases a five-year-old account does not get a fresh limitations clock; it inherits the original accrual date. If a collector sues you, one of the first things to pin down is the date of your last payment, because that anchors the entire timeline.
The rule that can RESTART the clock
This is the single most important and most dangerous rule for Montana consumers: actions you take can reset the limitations period back to zero, giving the collector years of new time to sue.
Under MCA § 27-2-409, an acknowledgment or new promise to pay is enough to restart the clock only if it is contained in a writing signed by the person to be charged. A casual verbal “yes, I owe that” on a recorded collection call generally is not sufficient by itself. However, Montana law also treats part payment of principal or interest as equivalent to a new promise, which can revive an otherwise expired debt. In practice, that means:
- Making any payment—even a small “good faith” payment a collector pressures you into—can restart the limitations period.
- Signing a written acknowledgment or new payment agreement can restart it.
- Agreeing in writing to a settlement or payment plan on an old debt can revive a claim that was already time-barred.
Because of this, you should be extremely cautious before paying, promising to pay, or signing anything related to a debt that may be near or past its limitations deadline. Collectors sometimes specifically target old, time-barred debts hoping to extract a small payment that legally revives the entire balance. If you are unsure how old a debt is, get the date of last payment in writing before you agree to anything.