Illinois: Statute of Limitations on Debt Collection

Requirements one by one

Governing law

Illinois's contract-debt deadlines live in the Code of Civil Procedure, 735
ILCS 5, in the limitations article, § 13-206 (the ten-year period for
written debt), § 13-205 (the five-year period for unwritten debt and
everything else), and § 13-210 (the borrowing statute for debt that arose
elsewhere).

How long you have on a written debt

Ten years, running from accrual, under § 13-206, which covers "bonds,
promissory notes, bills of exchange, written leases, written contracts, or
other evidences of indebtedness in writing." But Illinois courts read
"written contract" narrowly: a debt only qualifies for the 10-year period
if its essential terms, including the specific amount owed, can be
determined from the writing itself, with no outside evidence needed. A
2025 Illinois Appellate Court decision put it plainly: a written contract
exists "only where all the essential terms of the contract are in writing
and are ascertainable from the instrument itself."

How long you have on an oral or unwritten debt

Five years under § 13-205, and this bucket is broader than its name
suggests. It covers not just debt with no writing at all, but also a
supposedly "written" debt where proving an essential term, again, usually
the amount owed, requires evidence outside the document. This is where
most credit card debt lands: because the balance typically has to be shown
through account statements rather than the cardholder agreement alone,
Illinois courts have held that "the five-year statute of limitations for
oral contracts [is] applicable where parol evidence is required to
establish all of the essential terms and conditions of the contract." A
revolving credit line has been treated the same way when the agreement
itself doesn't specify how much was actually borrowed.

When the clock starts

Generally, the date of breach or default. For a debt payable in
installments, Illinois follows the "installment rule": a separate cause of
action arises on each missed installment, and the clock starts running on
each one as it comes due, rather than all at once, unless the creditor
actually exercises an acceleration clause to declare the whole balance due
immediately. A promissory note payable on a definite date accrues on that
date (or on acceleration); a demand note accrues once a demand for payment
is actually made.

Can a payment or promise restart the clock?

For written debt, yes, and dramatically so. Section 13-206 says that if "a
payment or new promise to pay has been made, in writing," on a written
debt, "within or after the period of 10 years, then an action may be
commenced thereon at any time within 10 years after the time of such
payment or promise to pay", meaning a written acknowledgment can revive a
claim even after the original 10 years has already run out, not just
extend one still running. Section 13-205's oral-contract statute contains
no equivalent language at all, and Illinois authorities are genuinely split
on whether courts should extend the same payment-revival concept to oral
debt by analogy, since the legislature wrote the revival rule into only one
of the two sections.

Is there a special rule for consumer debt?

Not by statute, but effectively yes through the written/oral classification
rule above. Because most consumer credit-card and open-account debt fails
the "essential terms ascertainable from the writing alone" test, it
typically lands in the shorter 5-year bucket rather than the 10-year one, a real-world consumer protection that comes from how courts read § 13-206,
not from a dedicated consumer-debt statute.

What if the debt originated in another state?

Illinois's borrowing statute, § 13-210, works in only one direction: if a
claim is already time-barred under the law of the state or country where it
arose, Illinois won't let a creditor revive it by suing here instead. But
Illinois treats its own statute of limitations as a procedural matter, so
absent that one-way bar, Illinois applies its own periods regardless of
where the debt originated, there's no "whichever period is shorter"
balancing test and no residency exception the way some other states have.

What actually happens once the deadline passes?

The ordinary default. Illinois's pleading rule, § 2-613(d), lists the
statute of limitations among the "affirmative defense[s]" that "must be
plainly set forth in the answer or reply" or they're lost. There's no
Illinois statute that independently prohibits a creditor from suing on, or
simply asking a debtor to voluntarily pay, a time-barred debt, the debtor
has to actually raise the defense in court.

What trips people up

The written-versus-oral line isn't about whether a piece of paper exists, it's about whether that paper, by itself, proves what's owed. A cardholder
agreement obviously exists in writing, but if you need a monthly statement
to show the actual balance, Illinois courts have said that's enough to pull
the claim into the shorter 5-year period. Don't assume "I signed something"
means you get 10 years. On the flip side, a written payment or promise on
an old written debt is a real trap: because § 13-206 lets this revive even
an already-time-barred debt, a signed payment plan or written promise made
years after the original deadline passed can hand a creditor a brand-new
10-year window.

Common questions

Does my credit card debt get 10 years or 5?
Usually 5. Illinois courts generally treat credit card debt as governed by
the shorter oral-contract period, because proving the balance typically
requires account statements beyond the cardholder agreement itself.

I signed a payment plan on an old, already-expired debt, did that
restart the clock?
For written debt, yes. Illinois's revival rule for written debt applies
even to a claim that's already past its original deadline, reviving it for
another 10 years from the date of the new written payment or promise.

Can a debt collector still contact me after the deadline passes?
The Illinois statute of limitations itself only bars a lawsuit; it doesn't
independently prohibit contact. Whether a specific contact about a
time-barred debt is lawful is a separate question under federal and state
debt-collection-conduct law, outside this survey's scope.

Does the debt disappear once the deadline passes?
No. The underlying debt still exists; what expires is the ability to force
payment through a lawsuit, and even then only if the debtor raises the
defense.

Statutes and sources

• 735 ILCS 5/13-206, "actions on bonds, promissory notes, bills of
  exchange, written leases, written contracts, or other evidences of
  indebtedness in writing ... shall be commenced within 10 years next after
  the cause of action accrued; but if any payment or new promise to pay has
  been made, in writing, ... then an action may be commenced thereon at any
  time within 10 years after the time of such payment or promise to pay.", https://www.ilga.gov/documents/legislation/ilcs/documents/073500050K13-206.htm
  (accessed 2026-07-09)
• 735 ILCS 5/13-205, "actions on unwritten contracts, expressed or
  implied, ... and all civil actions not otherwise provided for, shall be
  commenced within 5 years next after the cause of action accrued.", https://www.ilga.gov/documents/legislation/ilcs/documents/073500050k13-205.htm
  (accessed 2026-07-09)
• 735 ILCS 5/13-210, "When a cause of action has arisen in a state or
  territory out of this State ... and, by the laws thereof, an action
  thereon cannot be maintained by reason of the lapse of time, an action
  thereon shall not be maintained in this State.", https://www.ilga.gov/documents/legislation/ilcs/documents/073500050k13-210.htm
  (accessed 2026-07-09)
• 735 ILCS 5/2-613(d), "The facts constituting any affirmative defense ...
  must be plainly set forth in the answer or reply.", https://www.ilga.gov/documents/legislation/ilcs/documents/073500050K2-613.htm
  (accessed 2026-07-09)
• BMO Bank N.A. v. Zbroszczyk, 2025 IL App (1st) 241333, "Illinois law
  strictly construes a 'written contract' for purposes of the statute of
  limitations, finding a written contract only where 'all the essential
  terms of the contract are in writing and are ascertainable from the
  instrument itself.'", https://ilcourtsaudio.blob.core.windows.net/antilles-resources/resources/58eb8e2b-49c2-497f-80c5-02b1b9626b30/BMO%20Bank%20N.A.%20v.%20Zbroszczyk,%202025%20IL%20App%20(1st)%20241333.pdf
  (accessed 2026-07-09)