South Dakota: Statute of Limitations on Debt Collection

Requirements one by one

Governing law

South Dakota's contract-debt deadline lives in Title 15 ("Civil
Procedure"), Chapter 15-2 ("Limitation of Actions Generally"). Section
15-2-13(1) sets the general 6-year period for "an action upon a contract,
obligation, or liability, express or implied." Section 15-2-6(2) pulls a
debt on a sealed instrument out to a much longer 20-year period. Section
15-2-4 supplies a special accrual rule for a mutual, open, running
account. Section 15-2-29 governs whether an acknowledgment or payment can
restart the clock. And a contract for the sale of goods follows its own
separate Uniform Commercial Code period, SDCL § 57A-2-725, rather than the
general contract rule.

How long you have on a written debt

6 years. Section 15-2-13(1) covers "an action upon a contract, obligation,
or liability, express or implied" without distinguishing a signed writing
from an oral promise. The real exception runs the other way: a debt on a
sealed instrument gets 20 years instead (section 15-2-6(2)), and a
contract for the sale of goods gets the UCC's separate 4-year period
(section 57A-2-725) rather than the general 6-year rule.

How long you have on an oral or unwritten debt

Also 6 years, the identical period section 15-2-13(1) applies to a
written contract, obligation, or liability. South Dakota simply doesn't
draw a written-versus-oral line for ordinary contract debt.

When the clock starts

Section 15-2-13(1) starts the 6-year period when "the cause of action
shall have accrued," without itself defining that moment for an ordinary
contract claim (the general default is the date of breach or default).
There's one specific exception: for a mutual, open, and current account
with reciprocal demands between the parties, an ongoing running tab,
rather than a single fixed debt, section 15-2-4 starts the clock "from
the time of the last item proved in the account on either side," not from
any single earlier charge.

Can a payment or promise restart the clock?

Yes, and South Dakota splits this exactly the way California's exemplar
cell for this survey describes, just with the general rule and the
exception reversed: section 15-2-29 requires any acknowledgment or promise
of a new or continuing contract to be "contained in some writing signed by
the party to be charged," or it doesn't count to restart the clock. But
the same section then separately preserves the effect of a payment: "this
section shall not alter the effect of any payment of principal or
interest", meaning a bare payment, with no writing and no signature at
all, restarts the clock on its own.

Is there a special rule for consumer debt?

No. Title 54 ("Debtor and Creditor") regulates things like consumer
installment sales and money-lending licenses, but no South Dakota statute
sets a distinct, shorter or longer, limitations period specifically for
consumer-credit-transaction debt. The general 6-year period in section
15-2-13(1) applies to consumer and commercial debt alike.

What if the debt originated in another state?

South Dakota has no borrowing statute for contract debt. Chapter 15-2
contains no provision that imports a shorter limitations period from the
state where a debt originated; South Dakota's own 6-year period governs a
qualifying claim regardless of where the debt arose.

What actually happens once the deadline passes?

The ordinary default. Section 15-2-1 says the objection that a suit
wasn't filed in time "can only be taken by answer or other responsive
pleading", the debtor has to raise it. Nothing in Chapter 15-2 stops a
creditor from filing suit on a time-barred debt outright.

What trips people up

The payment-versus-acknowledgment split in section 15-2-29 is the sharpest
trap: a text message or phone call promising to pay an old debt does
nothing to restart the clock unless it's in a signed writing, but
actually sending even a small payment restarts it automatically, with no
writing at all. Someone trying to negotiate a partial settlement on a debt
they think is close to time-barred can accidentally revive the full clock
just by making a good-faith partial payment. Separately, the sealed-
instrument exception (20 years, versus the ordinary 6) is easy to miss
because sealed contracts are rare in modern practice, but it still governs
whenever one exists.

Common questions

Does South Dakota give more time to sue on a written contract than an
oral one?
No, both get the same 6-year period. A debt on a sealed instrument (20
years) and a contract for the sale of goods under the UCC (4 years) are
the real exceptions.

I made a payment on an old debt, did that restart the clock?
Yes. Section 15-2-29 specifically preserves the effect of "any payment of
principal or interest" as sufficient to restart the 6-year period, even
without any signed writing.

Can a debt collector still sue me after the statute of limitations
runs?
Yes, the filing itself isn't blocked, you have to raise the expired
deadline as a defense in your answer to the lawsuit.

My debt originated in a state with a shorter deadline than South
Dakota's, does that shorter period apply here?
No. South Dakota has no borrowing statute for contract debt, so its own
6-year period applies regardless of where the debt originated.

Statutes and sources

• SDCL § 15-2-13, "Except where, in special cases, a different
  limitation is prescribed by statute, the following civil actions other
  than for the recovery of real property can be commenced only within six
  years after the cause of action shall have accrued: (1) An action upon a
  contract, obligation, or liability, express or implied, excepting those
  mentioned in §§ 15-2-6 to 15-2-8, inclusive, and subdivisions
  15-2-15(3) and (4);", https://sdlegislature.gov/Statutes/15-2-13
  (accessed 2026-07-09)
• SDCL § 15-2-6, "Except where, in special cases, a different limitation
  is prescribed by statute, the following civil actions other than for the
  recovery of real property can be commenced only within twenty years
  after the cause of action shall have accrued: (1) An action upon a
  judgment or decree of any court of this state; (2) An action upon a
  sealed instrument, except a real estate mortgage.", https://sdlegislature.gov/Statutes/15-2-6 (accessed 2026-07-09)
• SDCL § 15-2-4, "In an action brought to recover a balance due upon a
  mutual, open, and current account where there have been reciprocal
  demands between the parties, the cause of action shall be deemed to have
  accrued from the time of the last item proved in the account on either
  side.", https://sdlegislature.gov/Statutes/15-2-4 (accessed
  2026-07-09)
• SDCL § 15-2-29, "No acknowledgment or promise is sufficient evidence
  of a new or continuing contract, whereby to take the case out of the
  operation of this chapter, unless the same be contained in some writing
  signed by the party to be charged thereby; but this section shall not
  alter the effect of any payment of principal or interest.", https://sdlegislature.gov/Statutes/15-2-29 (accessed 2026-07-09)
• SDCL § 15-2-1, "Civil actions can only be commenced within the periods
  prescribed in this title after the cause of action shall have accrued
  except where in special cases a different limitation is prescribed by
  statute. The objection that the action was not commenced within the time
  limited can only be taken by answer or other responsive pleading.", https://sdlegislature.gov/Statutes/15-2-1 (accessed 2026-07-09)