An Independent Calculator · For WRS MembersIssue 2026.01 · Wisconsin Edition
WI
Maximize Your WRS Pension with Compound Interest
A calculator built specifically for Wisconsin educators in Milwaukee, Madison, and Green Bay. Plan your 403(b) or IRA supplement alongside your WRS pension benefits.
01.
7.65%
WI State Income Tax
02.
$23,000
2024 403(b) Limit
03.
WRS
Pension System
§ 01 — The Calculator
Run your projection
Defaults are set for a typical Wisconsin teacher's 403(b) supplement. Adjust each input to match your situation, then calculate.
$
Starting balance in your 403(b) or IRA
$
$400 = $4800/yr
%
yrs
%
%
Assumes national average inflation of ~3%
%
Wisconsin tax rate: up to 7.65%
§ 03 — The Output
After — years
Wisconsin Reality: With state income tax up to 7.65%, pre-tax 403(b) contributions are especially powerful for WRS members — every dollar you defer saves you both federal AND state taxes immediately.
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 chart
Year-by-year breakdown
Year
Monthly
Deposited
Portfolio
Gain
Real Value
§ 04 — Essay
How Wisconsin Teachers Can Strengthen Their WRS Pension with Compound Interest
If you're an educator in Wisconsin, the Wisconsin Retirement System (WRS) forms the bedrock of your retirement security. But like most state pension systems, WRS alone rarely replaces 100% of your pre-retirement income. Whether you teach in Milwaukee, Madison, and Green Bay, understanding how compound interest in a 403(b) can supplement your pension is one of the most important financial decisions of your career.
The Retirement Gap in Wisconsin: A WRS pension that replaces approximately 60% of your final salary still leaves a meaningful gap — especially as healthcare costs rise 5–7% annually. For teachers in Milwaukee and Madison, a 403(b) powered by compound interest is the most reliable way to close that gap.
§ 05 — Common Questions
Frequently asked
Is WRS alone enough for retirement in Wisconsin?
For most Wisconsin teachers, WRS replaces about 50–65% of final salary. Comfortable retirement typically requires 70–90%, so a 403(b) supplement closes that gap.
Are Wisconsin teachers covered by Social Security?
Yes (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 Wisconsin's 7.65% state tax affect my withdrawals?
Traditional 403(b) withdrawals are taxed as ordinary income in Wisconsin. Some states offer partial exemptions for retirement income — check current Wisconsin rules.