2026 Illinois judgment & prejudgment interest rates
Current 2026 snapshot: Illinois post-judgment interest is 9% per year; the recorded prejudgment reference is 6% / 5% per year.
Everything Illinois charges in interest on a money judgment or an overdue debt, in one place — the rate after judgment and the rate before it, each recorded with a cited source and linked to its full page with observations, scope, and known carve-outs.
| Metric | Rate or rule | Effective | Authority | Basis |
|---|---|---|---|---|
| Post-judgment interest | 9% | July 1, 2021 | 735 ILCS 5/2-1303 | Fixed by statute |
| Prejudgment interest | 6% / 5% | July 9, 2026 | 735 ILCS 5/2-1303(c) | Fixed by statute |
Post-judgment interest
Illinois's post-judgment interest rate is 9% per year. Illinois judgments accrue interest at 9% per year under 735 ILCS 5/2-1303 — a flat statutory rate, simple interest, charged only on the unpaid portion of the judgment. The main exception: judgments against a unit of local government accrue 6%.
→ Full Illinois post-judgment page — 735 ILCS 5/2-1303, effective-date history, scope, and official source.
Prejudgment interest
Illinois's prejudgment interest rate is 6% / 5% per year (fixed by statute). Illinois prejudgment interest is 6% / 5% per year, as simple interest under 735 ILCS 5/2-1303(c).
→ Full Illinois prejudgment page — 735 ILCS 5/2-1303(c), when it applies, accrual, compounding, and carve-outs.
Frequently asked
What is the post-judgment interest rate in Illinois?
As of July 1, 2021, the Illinois post-judgment interest rate is 9% per year. Illinois’ 9% statutory judgment rate.
What is the prejudgment interest rate in Illinois?
Illinois's prejudgment interest rate is 6% / 5% per year (fixed by statute). Illinois’s prejudgment interest rate — when a court awards it.
Is Illinois judgment interest simple or compound, and when does it start?
See each rate's page for the exact compounding rule, accrual date, and statutory carve-outs — Illinois prejudgment interest in particular turns on the type of claim.
Cite this page
StatuteRates. “Illinois Judgment & Prejudgment Interest Rates.” StatuteRates.com. Accessed today. https://statuterates.com/states/illinois/ Each rate includes a cited source and recorded effective date; confirm the controlling authority before use.
Compare every state on the state interest-rate index and the prejudgment interest index, or enter a confirmed rate in the judgment interest and per-diem calculator. Reference data only — not legal advice.