An Independent Calculator · For IPERS MembersIssue 2026.01 · Iowa Edition
IA
Maximize Your IPERS Pension with Compound Interest
A calculator built specifically for Iowa educators in Des Moines, Cedar Rapids, and Davenport. Plan your 403(b) or IRA supplement alongside your IPERS pension benefits.
01.
5.7%
IA State Income Tax
02.
$23,000
2024 403(b) Limit
03.
IPERS
Pension System
§ 01 — The Calculator
Run your projection
Defaults are set for a typical Iowa 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
%
%
Iowa cost of living is below national average — 2.5–3% typical
%
Iowa tax rate: up to 5.7%
§ 03 — The Output
After — years
Iowa Reality: With state income tax up to 5.7%, pre-tax 403(b) contributions are especially powerful for IPERS 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 Iowa Teachers Can Strengthen Their IPERS Pension with Compound Interest
If you're an educator in Iowa, the Iowa Public Employees' Retirement System (IPERS) forms the bedrock of your retirement security. But like most state pension systems, IPERS alone rarely replaces 100% of your pre-retirement income. Whether you teach in Des Moines, Cedar Rapids, and Davenport, understanding how compound interest in a 403(b) can supplement your pension is one of the most important financial decisions of your career.
The Opportunity in Iowa: Iowa's lower cost of living means your IPERS pension stretches further than it would in coastal states — but don't let that breed complacency. Healthcare costs, travel, and helping family still add up quickly in retirement. A 403(b) supplement ensures you have flexibility beyond what IPERS provides.
§ 05 — Common Questions
Frequently asked
Is IPERS alone enough for retirement in Iowa?
For most Iowa teachers, IPERS replaces about 50–65% of final salary. Comfortable retirement typically requires 70–90%, so a 403(b) supplement closes that gap.
Are Iowa 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 Iowa's 5.7% state tax affect my withdrawals?
Traditional 403(b) withdrawals are taxed as ordinary income in Iowa. Some states offer partial exemptions for retirement income — check current Iowa rules.