IOWA PAYCHECK CALCULATOR

Iowa has pulled off one of the more dramatic state tax turnarounds in the country. As recently as 2022, the state ran a nine-bracket system with a top rate of 8.53%, one of the highest in the Midwest. A series of reforms, HF 2317 in 2018, HF 2552 in 2022, and finally Senate File 2442 in 2024, phased that down year after year until Iowa landed on a single flat 3.8% rate starting with 2025 income, confirmed unchanged for 2026 by the Iowa Department of Revenue. That puts Iowa’s rate below neighbors Illinois (4.95% flat), Missouri (top 4.7%) and Minnesota (up to 9.85%), though still above zero-tax South Dakota next door. On the Tax Foundation’s 2026 State Tax Competitiveness Index, Iowa now ranks solidly in the upper half of all states, a genuine shift from its old reputation as a high-tax Midwest outlier.

What actually comes out of an Iowa paycheck: federal income tax, Social Security (6.2%), Medicare (1.45%), and Iowa’s flat 3.8% state tax, calculated on Iowa taxable income, which starts from your federal figure and effectively uses the same standard deduction. There’s no city or county income tax withheld from paychecks anywhere in Iowa, though many school districts add a surtax that shows up at filing time rather than on your stub, more on that below. If you’re comparing offers across state lines, check the Illinois paycheck calculator and Minnesota paycheck calculator for two higher-tax neighbors, or the South Dakota paycheck calculator for a zero-income-tax comparison right across the border.

Federal Tax on a $70,000 Salary: The Worked Example

Here’s exactly how the calculator above lands on the federal number for a single filer earning $70,000 in 2026.

Step	Detail	Amount
Gross salary	Starting point	$70,000
Minus standard deduction	Single filer, 2026	-$16,100
Federal taxable income		$53,900
10% bracket	$0 – $12,400	$1,240
12% bracket	$12,400 – $50,400	$4,560
22% bracket	$50,400 – $53,900	$770
Total federal tax	Effective rate: 9.4% of gross	$6,570

Iowa’s state tax then applies to that same $53,900 taxable income figure, since Iowa starts from the federal number rather than running its own separate deduction. At a flat 3.8%, that’s $2,048 in state tax, no brackets to walk through, no marginal-versus-effective-rate confusion like on the federal side.

Iowa vs Neighboring States at $70,000 (Single)

Figures below use each state’s own 2026 standard deduction and published rates, same $70,000 gross salary, single filer, before local taxes or credits.

State	Income Tax Type	State Tax Owed	Estimated Net Pay
South Dakota	No income tax	$0	$58,075
Iowa	Flat 3.8%	$2,048	$56,027
Nebraska	Graduated, top rate 4.55%	~$2,500	~$55,575
Missouri	Graduated, up to 4.7%	~$2,900	~$55,175
Illinois	Flat 4.95%	~$3,300	~$54,775
Minnesota	Graduated, up to 9.85%	~$3,900	~$54,175

Nebraska, Missouri, Illinois and Minnesota figures are close estimates built from each state’s published 2026 rates and general deduction structure rather than a full line-by-line bracket walk, so treat them as directional. Illinois uses a personal exemption instead of a standard deduction, which this estimate approximates. South Dakota levies no state income tax at all, making it the common relocation target for Iowans moving purely for tax reasons.

Where Your Paycheck Money Actually Goes

Follow a $70,000 Iowa salary from gross to net, in the order it actually leaves your check. Federal income tax comes off first, calculated on taxable income after the standard deduction: $6,570 gone before anything else. Social Security takes a flat 6.2% next, applying to the full salary since it’s well under the $184,500 wage base for 2026: that’s $4,340. Medicare follows at 1.45% with no cap at all, adding $1,015. Iowa’s flat 3.8% state tax comes last, applied to the same $53,900 taxable income figure used on the federal side, adding $2,048. Add it all up and $13,973 leaves the paycheck before it’s yours, landing you at $56,027 for the year, or about $2,155 every two weeks on a standard biweekly schedule. Worth remembering: if you live in a school district that levies a surtax, that amount is not part of this paycheck math at all, it gets settled separately when you file your annual return.

Iowa’s Journey From 8.53% to a Flat 3.8%

Iowa’s tax reform took shape over three separate pieces of legislation, each one accelerating the timeline set by the last. House File 2317, signed by Governor Kim Reynolds in 2018, first set Iowa on a path toward simplification. House File 2552 in 2022 sped things up further, and Senate File 2442, signed in May 2024, locked in the final flat 3.8% rate a year ahead of the original schedule.

Tax Year	Structure	Top Rate
2022	Nine-bracket progressive system	8.53%
2023	Four-bracket progressive system	6.0%
2024	Two-bracket progressive system	5.7%
2025 to present (2026)	Single flat rate	3.8%

That’s a drop of nearly 4.75 percentage points off the top rate in just three years, one of the largest state income tax cuts of its size completed anywhere in the country over that stretch. The Iowa Department of Revenue confirmed on October 21, 2025 that the 3.8% flat rate carries over unchanged into 2026, with all levels of taxable income subject to the same rate.

Iowa’s Tax Burden vs National Averages

Tax Type	Iowa	National Picture
Income tax	Flat 3.8%	Below most states; among the lowest flat rates in the Midwest
Sales tax (avg. combined)	6.94%	Below the national average
Property tax (effective rate)	1.33%	Above the national average
Estate / inheritance tax	None, both eliminated by 2025	Matches most states

Iowa’s honest trade-off runs the opposite direction from a lot of low-tax states: instead of leaning on sales tax, Iowa collects a bigger share of its revenue through property tax, which the Tax Foundation puts at 32.3% of total state and local collections, the largest single source. Homeowners feel that more than renters do, and it’s the one line item where Iowa still sits above the national average even as its income tax has become one of the more competitive rates in the region.

Retirees and the School District Surtax in Iowa

Iowa has become one of the more retirement-friendly states in the country almost overnight. Social Security benefits are fully exempt from state income tax. Since 2023, Iowa also fully exempts most other retirement income for qualifying taxpayers, pensions, 401(k) and IRA distributions, and military retirement pay all included, a sharp reversal from the state’s older reputation as unfriendly to retirees under its higher graduated rates.

One quirk workers should know about even outside retirement: many Iowa school districts levy their own surtax, ranging from 0% up to 20% of your Iowa state tax liability, to help fund local schools. Unlike the state income tax itself, this surtax is generally not withheld from regular paychecks. Instead, it gets calculated and added to what you owe when you file your annual Iowa return, which means a paycheck calculator like this one can show your regular withholding accurately while your actual year-end state tax bill runs a bit higher depending on your school district.

Frequently Asked Questions

Iowa’s transformation from a high-tax outlier to one of the more competitive states in the Midwest happened faster than most people realize, three rate cuts in three years brought the top bracket down from 8.53% to a flat 3.8%. Combined with full exemptions for Social Security and most other retirement income, Iowa now makes a genuinely different pitch than it did just a few years ago. The one number still worth watching on the horizon is property tax, since that’s the area where Iowa still runs above the national average even as its income tax picture keeps improving.

Figures on this page are estimates for tax year 2026 based on published federal and state rates as of August 2026. They do not account for every credit, deduction, or local circumstance including school district surtax. Verify current figures with the Iowa Department of Revenue or a tax professional before filing.