Bottom line
Illinois TRS currently uses a 6% excess-salary threshold for this employer-cost rule. The briefly enacted 3% threshold was repealed in 2019 and, according to TRS, was never implemented.Quick facts
- Current Illinois TRS employer guidance uses a 6% excess-salary threshold
- TRS historical materials state that the 3% threshold enacted in 2018 was repealed in 2019 before it was implemented
- TRS’s online excess-salary calculator is an estimate and does not determine the final employer bill
Why the current rule is 6%, not 3%
Illinois TRS currently uses a 6% end-of-career salary-increase threshold for the employer contribution rule. A 2018 law briefly lowered the threshold to 3%, but Public Act 101-0010 repealed that change in 2019. TRS’s own historical materials say the 3% level was never implemented and that the threshold returned to 6%. For a guide published in September 2026, the current 6% rule—not the abandoned 3% proposal—should be the starting point.
The rule does not prohibit a district from giving a raise above 6%, and it does not automatically erase salary above 6% from a member’s pension record. Instead, when statutory conditions are met, the employer can owe TRS the present value of the pension increase attributable to the portion of a qualifying salary increase above 6%. The member’s pay, pensionable salary and the employer’s additional pension cost are related concepts, but they are not the same amount.
When an increase can produce an employer contribution
TRS ties the excess-cost rule to a salary increase above 6% in a school year used to determine final average salary. The higher salary must also increase the retirement benefit before an additional employer contribution is relevant. Because final-average-salary years and employment facts differ by member, a raise greater than 6% does not create an identical charge in every case. TRS performs the final calculation from the retirement record rather than from a simple percentage test alone.
TRS provides an online excess-salary calculator, but the calculator page expressly says it is only an estimate and does not represent the actual amount a district may owe. That distinction matters near retirement, when the final average salary may depend on which years TRS ultimately selects. Employers can use the calculator to model exposure, while members should rely on the pension calculation and salary record TRS actually uses when the retirement claim is processed.
| Question | If yes | If no |
|---|---|---|
| Increase exceeds 6%? | Continue review | No excess under the 6% threshold |
| Higher salary is used in final average salary? | Potential employer cost | Rule may not create a pension-cost charge |
| Increase raises the pension benefit? | TRS calculates actuarial cost | No benefit-driven excess cost |
| Calculator shows an estimate? | Use for planning only | Wait for TRS calculation |
How to review the issue without treating it as a benefit penalty
A retiring educator can start by identifying the salary years most likely to enter final average salary, then comparing year-to-year increases inside that window. Ask the employer whether it expects an excess-salary contribution and whether any salary corrections or special assignments are still being reported. This check is useful for spotting payroll or contract questions before retirement is finalized, but the member should not subtract an employer excess-cost estimate from the pension as though it were a personal penalty.
Keep the 6% employer-cost rule separate from Illinois TRS Tier 2’s pensionable salary cap. The Tier 2 cap limits how much salary can enter the pension formula in a fiscal year, while the 6% rule addresses an additional employer contribution tied to certain year-to-year salary increases used in final average salary. A Tier 2 member can encounter both concepts, but they answer different questions and should be verified separately in the TRS record.
A raise above 6% is not automatically excluded from final average salary
The phrase “6% cap” can sound as though TRS discards every dollar above the threshold. Current TRS guidance describes a different mechanism: when a qualifying salary increase above 6% is used in final average salary and increases the pension, the employer can owe the actuarial value of the pension attributable to the excess portion. The rule is therefore an employer-cost provision, not a blanket reduction of the member’s reported salary.
Separate actual pay, creditable salary TRS accepts, and the employer’s possible excess-cost contribution. They are related but not identical. If a raise reflects a position change, extra duties, a full-time-equivalency change or another circumstance, the employer must determine how current TRS reporting rules and statutory exclusions affect the excess-salary calculation.
| Amount | Who reports or calculates it | Why it matters |
|---|---|---|
| Actual compensation | Employer payroll | What the member was paid |
| Creditable salary | Employer/TRS record | Can enter pension calculations |
| Excess-salary contribution | TRS bills employer | Funds actuarial cost from qualifying excess raise |
Why final-average-salary selection can change the result
An increase matters to the excess-cost rule when the higher salary is used in the member’s final average salary calculation and increases the pension. TRS’s calculator notes that salary-year selection can differ by tier and by the retirement record. This is one reason a district cannot determine the final excess cost solely by comparing two contract salaries without knowing which salary years TRS will ultimately use.
Compare the employer’s projected final-average-salary years with those later selected by TRS. If the selected years change, the salary increases driving the employer charge can change too. The official calculator can illustrate possible exposure, but TRS warns it is not the final amount owed by the district.
What to ask before signing an end-of-career contract change
Before an end-of-career increase is finalized, ask whether the employer has modeled the TRS excess-salary contribution and whether the raise is expected to be used in final average salary. A member does not need the employer’s actuarial bill to estimate a pension, but understanding the district’s concern can prevent later confusion if the contract changes salary timing, stipends or assignment structure to manage pension costs.
Also distinguish the 6% employer-cost rule from other TRS limits, especially Tier 2’s pensionable salary cap. A Tier 2 educator could encounter both concepts, but they answer different questions. The Tier 2 cap limits salary entering the pension formula by fiscal year; the excess-salary rule addresses employer cost when qualifying year-to-year salary growth affects final average salary. Confirm each rule separately with the current TRS record.
Checklist before you decide
- Identify the salary years likely to enter final average salary.
- Compare year-to-year increases in those candidate years against the current 6% threshold.
- Ask the employer whether it expects an excess-salary contribution.
- Treat the TRS online calculator as an estimate, not a final bill.
- Separate the 6% employer-cost rule from the Tier 2 pensionable salary cap.
- Reconcile the final employer and member records when TRS processes retirement.
Frequently asked questions
Does Illinois TRS stop a teacher from getting a raise over 6%?
No. The current TRS rule can require an additional employer contribution when a qualifying salary increase above 6% is used in final average salary and increases the pension. It does not prohibit a district from paying a larger raise, and it is not a blanket rule that cuts every dollar above 6% from the member’s reported salary.
Is the Illinois TRS end-of-career threshold 3% or 6% now?
It is 6% under current TRS guidance. Illinois briefly enacted a 3% threshold in 2018, but Public Act 101-0010 repealed that change in 2019. TRS historical materials state that the 3% level was never implemented and that the threshold returned to 6%, so current planning should not use 3% as the operative rule.
Does every raise over 6% create an Illinois TRS charge?
Not necessarily. The rule is tied to a salary increase above 6% in a school year used to determine final average salary and to the pension increase attributable to the excess portion. The member’s selected salary years and other employment facts matter, so TRS performs the final calculation from the retirement record rather than from the percentage alone.
Is the TRS excess salary calculator the final employer bill?
No. TRS explicitly says the online calculator is an estimate and does not represent the actual amount a district may owe. The formal employer cost is determined from final retirement data and the TRS calculation. Use the calculator to model possible exposure, then reconcile the result with the employer bill or retirement record when TRS completes processing.
Is the 6% salary increase rule the same as the Illinois TRS Tier 2 salary cap?
No. The Tier 2 cap limits the amount of salary that can be counted for pension purposes in a fiscal year. The 6% excess-salary rule addresses an additional employer contribution when certain year-to-year salary increases affect final average salary. A Tier 2 member can encounter both rules, but they measure different things and should not be combined into one cap.
Where this comes from
Sources were reviewed on September 1, 2026. Rules and member records maintained by the retirement system control.
Illinois TRS — Salary Increases Over 6 PercentOfficial source ↗Illinois TRS — Excess Salary Increase CalculatorOfficial source ↗Illinois TRS — Evolution of TRSOfficial source ↗This article provides general educational information. It is not a benefit determination or financial, tax, or legal advice. Confirm account-specific information with the retirement system.