Debt collectors cannot sue, or threaten to sue, over a debt that has outlived its statute of limitations, under Regulation F, the Consumer Financial Protection Bureau’s debt collection rule. The ban sits in 12 CFR 1006.26(b). The CFPB also warns that in some states, a partial payment on an old debt can start the time limit over.
What does the federal rule actually bar?
The text is short. It says a debt collector “must not bring or threaten to bring a legal action against a consumer to collect a time-barred debt.” A time-barred debt is one where the window for suing has closed, and the ban covers both an actual lawsuit and a letter or phone call that hints at one.
There is one carve-out. The paragraph does not apply to proofs of claim that a collector files in a bankruptcy case. The CFPB’s consumer page on old debts says the same, and adds that a lawsuit filed after the statute of limitations has expired is a violation of the Fair Debt Collection Practices Act. The CFPB marked that page as last reviewed Oct. 28, 2026.
Anyone holding a collection letter for an old account has a first question to answer before any other: when did the account last see a payment, and which state’s law governs it? The answer decides whether the collector is allowed to go to court at all.
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Regulation F is the CFPB’s rule for how third-party collectors may behave, and section 1006.26 is the part that deals with old debts. The ban lands on the collector, not on the person who owes. A debt past the limit does not vanish, and the CFPB’s page says collectors may still ask for payment, but the courthouse door is closed to them.
How long is the clock, and when does it start?
The CFPB says most states set statutes of limitations of between three and six years for debts. The exact length depends on the type of debt, the state, and sometimes on the state law named in the credit agreement. Federal student loans are an exception, because the CFPB says they have no statute of limitations.
The starting point also varies. In some states the period begins once a required payment is missed, the CFPB says. In others, it counts from the most recent payment, even one made while the account was already in collection. The Federal Trade Commission’s debt collection FAQs say the window usually starts when a payment is missed, and that once it closes the debt is “time-barred.”
Can a small payment bring an old debt back to life?
In some states, yes. The CFPB says that making a partial payment, or acknowledging that an old debt is owed, may restart the time period, even after it has expired. The agency adds that the effect can also depend on terms in the contract with the creditor, or on a move to a state with different rules.
The FTC puts it more bluntly. In some states, it says, paying any amount on a time-barred debt, or even promising in writing to pay, can revive the debt. The clock resets and a new statute of limitations begins. That is why a small payment offered to make a collector go away can hand the collector the right to sue that it had just lost.
Because the rules differ by state, neither agency gives a single answer. The CFPB suggests that an attorney can help calculate the limit for a particular situation.
The practical weight falls on records. The FTC says a person sued over a debt this old should bring the collector’s debt information or proof of the last payment, because those papers show when the clock started. A bank statement or receipt for the last payment on an account can be the difference between a dismissed case and a judgment.
Can collectors still call or write about a debt this old?
They can, in most states. The CFPB says collectors may keep trying to collect after the limit expires, including by letter or phone, as long as they follow the law. What they may not do is sue or threaten to sue, and the rule’s ban applies to both.
That leaves a gap between what a collector can say and what it can do in court. A letter that sounds final is still just a request for payment once the debt is time-barred. A letter that warns of a lawsuit on such a debt is the kind of statement 12 CFR 1006.26(b) prohibits.
What happens if a lawsuit arrives anyway?
The statute of limitations does not defend itself. The CFPB says a court may still award a judgment if the person sued does not show up and raise the time limit as a defense. Ordinarily, it is the responsibility of the person being sued to point out that the period has expired.
The FTC says to respond by the date in the court papers and not ignore the suit. For a time-barred debt, it says to tell the judge the statute of limitations has run out, and to bring a copy of the debt information from the collector or proof of the last payment. It also suggests talking to an attorney. The CFPB adds that a person sued over a time-barred debt may have a claim against the collector for filing the suit.
Who is keeping track of when each old debt’s clock started?
A household with several old accounts can lose track of which ones are past the limit, which ones got a payment last year, and which collector said what on the phone. One payment made in the wrong state can restart a clock that had already run out.
The Bank Account & Debt Protection Kit includes the debt-validation steps and a debt inventory, call log and deadline tracker, and a section titled Old Debt and the Clock in its 75 pages. It is a guide and worksheets, not legal advice, and it does not file anything or decide whether a debt is time-barred.
Get the debt inventory, call log and deadline tracker for every old account →
This article was produced with AI assistance and edited for accuracy against the sources linked above.
Warren Cohen is a finance writer based in Phoenix, Arizona, covering personal finance topics including credit, banking, and beginner investing. He earned his degree in business administration from Arizona State University and began his career working in consumer finance, where he gained direct experience with lending and credit systems. He now writes for personal finance websites and fintech platforms, focusing on clear, practical content that helps readers make informed financial decisions.
