Statute of limitations on debt in South Dakota
In South Dakota, a creditor or debt collector has 6 years to sue on a written contract, 6 years on an oral agreement, and 6 years on an open account such as a credit card (S.D. Codified Laws § 15-2-13). For medical bills, the operative number is 6 years — Medical bills fall under SDCL 15-2-13(1)'s single 6-year period for any 'contract, obligation, or liability, express or implied,' which South Dakota courts apply to open accounts as well, so the written/oral/open-account distinction does not change the answer (the UCC 4-year period in SDCL 57A-2-725 applies only to sales of goods, not medical services).
| Written contracts | 6 years |
| Oral agreements | 6 years |
| Open accounts (credit cards) | 6 years |
| Medical debt | 6 years |
How the limitation works
- It limits lawsuits, not the debt. A time-barred debt still exists; what expires is the collector’s ability to win in court.
- It is a defense you must raise. Courts don’t apply it for you. If you are sued and don’t respond, the collector wins by default — even on a time-barred debt.
- The clock usually runs from last activity — typically your last payment — not from when the debt was sold. A debt buyer inherits the original clock.
- Threatening to sue on time-barred debt is illegal. Federal Regulation F (12 C.F.R. §1006.26) bars collectors from suing or threatening suit on time-barred debt, whether or not they knew it was time-barred.
The restart trap
Yes — a payment of principal or interest restarts the 6-year period, and a written, signed acknowledgment or new promise also restarts it; an oral acknowledgment does not (SDCL 15-2-29, which requires a signed writing for acknowledgments but expressly 'shall not alter the effect of any payment of principal or interest').This is the single most expensive mistake people make with old debt: a small “good-faith” payment on a nearly-expired account can hand the collector a fresh lawsuit window. Confirm the dates before paying anything on an old account.
What to do with an old collection notice
- Find the date of last activity — your own bank records beat the collector’s letter.
- Count forward using the table above. Older than the period? The debt may be time-barred in South Dakota.
- Send a written validation request — it forces the collector to document the debt and pauses collection until it does (15 U.S.C. §1692g). Generate it free →
- Do not acknowledge the debt in writing or pay anything until you know where the clock stands.
- If you’re sued, respond by the deadline and raise the statute of limitations. Your state’s legal aid can help free: South Dakota Attorney General – Consumer Protection Division.
Common questions
What is the statute of limitations on debt in South Dakota?
South Dakota allows 6 years to sue on written contracts, 6 years on oral agreements, and 6 years on open accounts such as credit cards (S.D. Codified Laws § 15-2-13). Medical debt is generally treated as a written contract here — 6 years.
When does the clock start?
Generally from the date of default or last activity on the account — commonly the last payment or charge — not from when the debt was sold to a collector. Selling a debt does not reset the statute of limitations.
Does paying something on an old debt restart the statute of limitations in South Dakota?
Yes — a payment of principal or interest restarts the 6-year period, and a written, signed acknowledgment or new promise also restarts it; an oral acknowledgment does not (SDCL 15-2-29, which requires a signed writing for acknowledgments but expressly 'shall not alter the effect of any payment of principal or interest').
Can a collector still contact me about a time-barred debt?
Yes — the statute of limitations limits lawsuits, not requests to pay. However, under federal Regulation F (12 C.F.R. §1006.26), a collector may not sue or threaten to sue on a time-barred debt — the ban applies whether or not the collector knew the debt was too old.
What should I do if I get sued on an old debt?
Respond by the court deadline — never ignore a summons, because a default judgment revives everything. If the debt is older than the limitations period, raise the statute of limitations as an affirmative defense in your answer. Many defendants win on this alone.
How is a judgment different?
Once a creditor wins a judgment, a separate and much longer enforcement period applies, and judgments can often be renewed. That is why responding before judgment matters more than anything else on this page.
Keep reading
- Medical debt laws in South Dakota
- Free debt validation letter generator — no account needed
- Look up a debt collector — CFPB complaint records for the biggest agencies
- Charity care: hospital financial assistance, applied
- Medical debt laws in West Virginia
- Medical debt laws in California
- Medical debt laws in Idaho
- Medical debt laws in Maine
- Medical debt laws in Montana
- Medical debt laws in North Carolina
Legal information, not legal advice. Statutes change and courts interpret them — for advice on your situation, talk to a lawyer or your state’s legal aid office. Last reviewed AUG 2026.