Offer of Judgment Analyzer Guide for Illinois

What this calculator does

Run this scenario in DocketMath using the Offer Of Judgment Analyzer calculator.

DocketMath’s Offer of Judgment Analyzer (Illinois) helps you estimate the money consequences of an offer of judgment under Illinois law. It turns common litigation dates and offer terms into a structured outcome—so you can see how an offer might affect post-offer settlement leverage and potential cost/fee-style consequences if the case resolves in a way that triggers the statute.

This guide focuses on the Illinois general rule in 735 ILCS 5/2-1110. The statute authorizes an offer of judgment “in any civil action” using a timing-and-outcome framework.

What the analyzer typically computes

Depending on the inputs you provide, the tool can estimate components such as:

• Whether the offer is timely under the statute’s required window (with an emphasis on dates).
• Which side’s offer advantage is triggered, based on how the eventual judgment compares to the offer.
• Potential statutory additions (often including costs/fee-type add-ons depending on the side receiving the offer and the result).

Key timing rule (the default used here)

Illinois’ general rule requires the offer be made “more than 30 days before the trial date.” For this guide, we treat that as the default period because no claim-type-specific sub-rule was found in the provided jurisdiction data.

Source: 735 ILCS 5/2-1110 (ILGA)
http://www.ilga.gov/legislation/ilcs/fulltext.asp?DocName=073500050K2-1110

Statute excerpt: “In any civil action, a party may make an offer of judgment at any time more than 30 days before the trial date...”

When to use it

Use DocketMath’s Offer of Judgment Analyzer when you need to understand how an offer might “move the math” during settlement decisions and post-offer outcomes in an Illinois civil case.

Best times to run the analysis

• Before sending an offer: stress-test whether your offer timing passes the “more than 30 days before trial” requirement.
• After an offer is rejected but before trial: preview what could happen if the eventual judgment ends up above or below your figure.
• During settlement negotiations: quickly compare how a lower vs. higher offer could change leverage once the statute’s threshold mechanics are applied.
• During case budgeting: estimate potential exposure to additional statutory consequences tied to the offer.

Inputs that matter most in Illinois

While the exact fields in the tool may vary by interface, the practical drivers almost always include:

• Offer amount (the dollar figure offered)
• Offer date
• Trial date (the scheduled trial date you’re measuring against)
• Eventual judgment amount (for “what-if after the result” runs)
• Who made the offer (plaintiff vs. defendant), since the analysis compares the judgment to the offer differently depending on which side is the offeror

If you’re looking for the tool itself, start here: /tools/offer-of-judgment-analyzer.

Step-by-step example

Below is a realistic walk-through showing how the tool’s output changes when you adjust dates or the offer amount. This example uses the default timing rule from 735 ILCS 5/2-1110: the offer must be made more than 30 days before the trial date.

Example setup

Assume these dates and figures in an Illinois civil case:

• Trial date: October 15, 2026
• Offer made on: September 1, 2026
• Offer amount: $75,000
• Eventual judgment amount: $62,000
• Offeror: Plaintiff (plaintiff makes the offer)

Step 1: Enter the timeline

In the tool, enter:

• Offer date: 2026-09-01
• Trial date: 2026-10-15

Then the analyzer checks whether the offer is more than 30 days before trial.

• From Sept 1 to Oct 15 is 44 days → clears the “more than 30 days” window.

Step 2: Enter the financial comparison

Next input:

• Offer amount: $75,000
• Judgment amount: $62,000
• Offeror: Plaintiff

Now run the analysis. The output will reflect the likely statutory consequences depending on how the judgment compares to the offer for the offeree/offeror relationship.

Step 3: Read the output like a settlement dashboard

A typical outcome summary will include items like:

• Timeliness check: Pass/Fail based on the “>30 days before trial” requirement under 735 ILCS 5/2-1110
• Comparison trigger: whether the judgment is above or below the offer amount, as relevant to the offeror/offeree mechanics
• Estimated additional exposure/additions: the tool reports calculated figures (often including costs/fee-type add-ons depending on the side and outcome)

Step 4: Try a second run to see how sensitive the math is

Change only one variable: make the offer later.

New scenario:

• Offer date: September 20, 2026
• Trial date: October 15, 2026
• Everything else unchanged

Sept 20 to Oct 15 is 25 days → fails the default timing rule in 735 ILCS 5/2-1110 (“more than 30 days before the trial date”).

When you re-run the analyzer:

• Timeliness check flips to Fail
• Even if the offer amount and judgment comparison look favorable, the statutory timing requirement may stop the intended offer-shifting effect from applying.

Step 5: Adjust the offer amount to see leverage shifts

Return to the timely offer date (Sept 1, 2026) and test a different offer:

• Offer amount: $50,000
• Judgment amount: $62,000
• Offeror: Plaintiff

Now the judgment is above the offer, so the analysis based on the comparison trigger can flip the estimated outcome directionally.

That’s the core value of the analyzer: it helps you see how timing and the offer-vs-judgment delta influence the modeled result.

Common scenarios

The Offer of Judgment Analyzer is most useful when you run it through repeatable patterns. Here are common scenarios that translate well into tool inputs.

Scenario A: Plaintiff makes a timely offer; judgment comes in below the offer

Use when: You want to test whether making a higher offer earlier could have improved outcomes for the plaintiff after trial.

• Offeror: Plaintiff
• Offer date: more than 30 days before trial
• Judgment amount: less than the offer amount

Typical result: The analyzer will likely reflect a comparison trigger consistent with the plaintiff’s position and estimate the likely additional consequences.

Scenario B: Defendant makes a timely offer; judgment comes in above the offer

Use when: You’re evaluating whether the defense strategy was positioned correctly if the plaintiff recovery ends up higher than the offer.

• Offeror: Defendant
• Offer date: more than 30 days before trial
• Judgment amount: greater than the offer amount

Typical result: Running multiple offer amounts can help you understand where the modeled threshold changes.

Scenario C: Offer is made within 30 days of trial

Use when: You need to check whether a late offer still qualifies under the default timing rule.

• Offer date: 30 days or less before trial
• Judgment: any amount

Typical result: The analyzer should flag the offer as timing-defective under the default Illinois rule in 735 ILCS 5/2-1110.

Scenario D: Post-judgment “what-if” planning

Use when: After verdict or judgment, you want to see what the modeled consequences would have been based on the original offer.

• Offer date: entered as originally made
• Trial date: entered as scheduled
• Judgment amount: entered from the outcome
• Offeror/offeree: selected to match who made the offer

This isn’t a substitute for how courts actually award costs/fees, but it can help you quantify exposure and support future settlement planning.

Tips for accuracy

To keep DocketMath results usable for decision-making, focus on matching the tool’s assumptions to the record as closely as possible.

1) Verify the trial date you’re using

The statute’s timing requirement is measured relative to the “trial date.” Use the date that matches the court’s scheduled trial date for the analysis.

Checklist:

2) Treat the “>30 days” rule as the default

This guide uses the general rule from 735 ILCS 5/2-1110:

• “In any civil action… at any time more than 30 days before the trial date…”

Because no claim-type-specific sub-rule was identified in the jurisdiction data you provided, don’t switch to a different timing rule unless your case facts clearly indicate a different statutory treatment.

3) Be precise about the comparison amount

The analyzer’s core judgment comparison depends on the judgment amount you enter.

Make sure you use:

Related reading

• Offer of Judgment Analyzer Guide for Alabama
• Offer of Judgment Analyzer Guide for Arizona
• Offer of Judgment Analyzer Guide for Colorado