California gives creditors four years to sue on a written contract under Code Civ. Proc. §337, and §360 requires any acknowledgment or new promise to sit in a signed writing, adding that a payment alone never revives a barred claim. The Civ. Code §1542 waiver of unknown claims is standard here and must be quoted verbatim to work. The Rosenthal Fair Debt Collection Practices Act also reaches original creditors, which gives California debtors leverage most states do not offer.
Texas applies four years under Civ. Prac. & Rem. Code §16.004, and §16.065 makes a signed written acknowledgment the only route to reviving a claim that appears time-barred. Debt buyers face a separate regime: Fin. Code §392.307 bars them from suing after limitations expire and provides that no payment or reaffirmation revives the claim. Signing a settlement on an old Texas account with the original creditor can restart the clock, while the same signature given to a debt buyer cannot.
Florida allows five years on a written contract under Fla. Stat. §95.11 and four years on an open account such as a credit card. Revival requires a signed writing under §95.04, so a debt settlement agreement on an expired Florida account is itself the instrument that resurrects the right to sue if the deal falls apart. The Florida Consumer Collection Practices Act at §559.72 adds state remedies on top of federal law.
New York cut the limitations period for consumer credit transactions to three years in CPLR 214-i, and that section blocks revival once the period runs. Collectors must send written confirmation of any settlement or payment schedule within five business days under 23 NYCRR 1.5, with quarterly accountings during an installment plan.
Illinois is the outlier on timing: ten years for written contracts under 735 ILCS 5/13-206, five years for oral or open accounts under 5/13-205. A written promise or payment can extend that ten-year window, so an Illinois debtor should weigh how long the exposure runs.