TRS Calculator · For Illinois Public School Educators
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Compound Interest Calculator

Tuned for TRS members
403(B)
$
Starting balance in your 403(b) or IRA
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$450 = $5400/yr · ~3% of $50K
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yrs
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IL inflation runs near 3% national average
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Flat 4.95% · IL doesn't tax retirement withdrawals!
Updated for IRS 2026 limits
Illinois's Unique Trick: Illinois doesn't tax retirement income — including 403(b) withdrawals. Pre-tax contributions save you 4.95% now, and you pay $0 state tax on withdrawals later.

Projection Summary

Year Output
Total Portfolio Value
Nominal future value
Total Principal
Out-of-pocket contributions
Real Purchasing Power
In today's dollars
Compound Gain
Effective Rate
Doubles In
Total Interest

Growth Visualization

Principal vs. Compound Interest

Year-by-Year Breakdown

Milestone years highlighted
YearMonthlyDepositedPortfolioCompound GainReal Value

How Illinois Teachers Can Build Retirement Security Around TRS

Illinois educators face a complicated retirement landscape. The Teachers' Retirement System of the State of Illinois (TRS) is one of the most underfunded major state pensions, with funded ratios around 40–45%. While benefits remain legally protected, this makes a 403(b) supplement especially important.

The Funding Reality: Illinois TRS benefits are constitutionally protected, but decades of underfunding have created persistent fiscal stress. Prudent IL teachers should never rely solely on TRS.
Frequently Asked Questions5 questions
Is TRS alone enough for retirement in Illinois?
For most Illinois teachers, TRS replaces about 50–65% of final salary. Comfortable retirement typically requires 70–90%, so a 403(b) supplement closes that gap.
Are Illinois teachers covered by Social Security?
Generally NOT covered. This affects how much you should contribute to a 403(b) — uncovered teachers should generally save more.
Can I contribute to a 403(b) and an IRA?
Yes — they have separate limits ($23,000 for 403(b) and $7,000 for IRA in 2026, with catch-up amounts at 50+). Many teachers use both.
What happens to my 403(b) if I move out of state?
Your 403(b) is portable and yours regardless of where you live. You can roll it into an IRA when you separate from your district.
How does Illinois's 4.95% state tax affect my withdrawals?
Traditional 403(b) withdrawals are taxed as ordinary income in Illinois. Some states offer partial exemptions for retirement income — check current Illinois rules.