What is the Illinois post-judgment interest rate?

9% a year from the date of judgment, under 735 ILCS 5/2-1303.

What rate applies against a local government in Illinois?

6% a year, for units of local government, school districts and other governmental entities.

Is there prejudgment interest in Illinois personal injury cases?

Yes. 6% a year from the filing of the action, except against governmental defendants.

Does a partial payment reduce the interest?

Yes. Interest runs on the unpaid portion as it stands from time to time.

Where is the Illinois judgment interest statute?

Section 2-1303 of the Code of Civil Procedure, 735 ILCS 5/2-1303.

Built by Unison Labs

Illinois judgment interest calculator

Q: Is Illinois judgment interest simple?

Yes. It is charged only on the unsatisfied part of the judgment.

735 ILCS 5/2-1303 sets 9% a year, and 6% when the debtor is a local government or school district. Choose the rate, enter the judgment and the dates.

Illinois judgment interest

Amount ($)Rate (%)

Judgment date

Paid on

Rate

Interest

Interest for 364 days

$4,487.67

Per day$12.33

Judgment plus interest$54,487.67

Illinois: 9%, 735 ILCS 5/2-1303. Source: Statute at ilga.gov (as of 9 November 2026). Interest is counted on a 365-day year. Not legal advice: confirm the rate in the judgment.

Illinois judgment interest rates

The rates in section 2-1303 of the Code of Civil Procedure. Choose one to use it in the calculator.

Illinois judgment interest rates
Applies to	Rate	Source
	9%	735 ILCS 5/2-1303(a), ilga.gov
	6%	735 ILCS 5/2-1303(a), ilga.gov
Prejudgment interest, personal injury and wrongful death	6%	735 ILCS 5/2-1303(c), Public Act 102-0006

The Illinois rate

Judgments draw interest at 9% a year from the date of judgment until satisfied, or 6% when the debtor is a unit of local government, a school district or another governmental entity (735 ILCS 5/2-1303(a)). Interest is charged only on the unsatisfied part of the judgment as it stands from time to time, so a partial payment lowers the base from that day.

Prejudgment interest in injury cases

Since 2021, 6% prejudgment interest is added in personal injury and wrongful death actions from the filing of the action (735 ILCS 5/2-1303(c)). Governmental defendants do not pay it. A written settlement offer can stop or reduce it, so check the offers made before calculating.

A worked example

A $120,000 judgment entered on 2 February 2026 earns $29.59 a day at 9%. If the defendant pays $60,000 on 2 June 2026 (120 days, $3,550.68 of interest), the interest is paid and $56,449.32 goes to principal, leaving $63,550.68 that earns $15.67 a day from then. Other states are in the judgment interest calculator for every state.