Iowa made one of the most dramatic state tax cuts in US history — from a 9-bracket system topping 8.53% to a single flat rate of 3.8%.
Iowa's 2022 tax reform law phased out nine income tax brackets and arrived at a flat 3.8% rate effective January 2025. Revenue trigger provisions could reduce the rate further — Iowa's stated long-term goal is to eliminate state income tax entirely. Iowa also fully exempts Social Security and most retirement income, making it one of the most retirement-friendly tax environments in the Midwest.
In 2020, a single Iowa worker earning $100,000 paid state income tax at rates ranging from 0.33% to 8.53% across nine different brackets. By 2026, that same worker pays a flat 3.8% on all taxable income. The effective tax burden at $100,000 dropped from approximately $6,800 to roughly $3,200 — a savings of $3,600 per year. This is one of the most aggressive state income tax reform packages enacted in the United States in the past decade.
Iowa's reform was triggered by surging state revenues. Iowa's law ties future tax rate cuts to revenue performance: if state revenues exceed a set threshold, the rate automatically drops further. The legislature and governor built in a path toward eventual elimination of the income tax entirely, though the timeline is uncertain. For 2026, 3.8% is the confirmed rate. Workers should watch for potential announcements of further cuts in 2027 or 2028 if revenues remain strong.
Iowa conforms to the federal standard deduction. Unlike states such as Oregon ($2,420 single) or Alabama ($2,500 single), Iowa's standard deduction tracks the federal amount — approximately $14,600 for single filers (2025 amount, adjusted annually). This means Iowa workers get a meaningful income reduction before the 3.8% rate applies, which lowers the effective burden significantly for typical earners.
Iowa is an excellent state for retirees from a tax perspective. Social Security is fully exempt from Iowa income tax (enacted 2023). Pension and retirement income is exempt for taxpayers age 55 and older under Iowa's retirement income exclusion. Combined, many Iowa retirees owe zero state income tax — which represents a significant improvement from just a few years ago when Iowa taxed all of these income sources.
Estimates only. Iowa flat rate 3.8%, standard deduction $14,600 (single) / $29,200 (married). Does not reflect Iowa's retirement income exemption or Social Security exemption. Consult a tax professional for advice.
| Gross Pay (this check) | $0.00 |
| Federal Income Tax | −$0.00 |
| Iowa State Tax (3.8% flat) | −$0.00 |
| Social Security (6.2%) | −$0.00 |
| Medicare (1.45%) | −$0.00 |
| Net Take-Home Pay | $0.00 |
Iowa has a flat 3.8% income tax rate for 2026. This replaced a nine-bracket system that topped out at 8.53% — a dramatic reduction implemented over three years as part of Iowa's 2022 tax reform law. Iowa's standard deduction conforms to the federal amount ($14,600 single / $29,200 married), so workers deduct a meaningful amount before the 3.8% rate applies.
Possibly. Iowa's tax reform law includes automatic rate triggers tied to state revenue performance. If revenues continue to meet specified thresholds, the rate could drop below 3.8% in future years. Iowa's long-term stated goal is to eliminate the income tax entirely, though no firm timeline has been set. Watch for Iowa Department of Revenue announcements each year.
No. Iowa fully exempted Social Security income from state income tax effective 2023. Iowa also exempts pension, 401(k), IRA, and most retirement income for taxpayers age 55 and older under the retirement income exclusion. Many Iowa retirees owe zero state income tax, making Iowa one of the most retirement-friendly states in the Midwest.
Iowa at 3.8% flat is lower than Minnesota (up to 9.85%), Wisconsin (up to 7.65%), and Illinois (4.95% flat). Iowa is comparable to Missouri (which has a 4.95% top rate) and Indiana (3.05% flat). Nebraska recently cut to a 3.99% flat rate, similar to Iowa's path. South Dakota has no income tax at all. Iowa is now among the more competitive Midwest states for income tax.
On $70,000 (single, biweekly), Iowa withholds approximately $109–$120 per paycheck in state income tax — roughly $2,850 annually. The effective rate is about 4.1% on gross pay but the actual 3.8% applies after the $14,600 standard deduction reduces taxable income to about $55,400. On $100,000, the effective rate is closer to 3.9% of gross.
No. Iowa does not have any local or city income taxes. Workers in Des Moines, Cedar Rapids, Davenport, Iowa City, or any other Iowa city pay only the flat 3.8% state rate with no municipal surcharge on wages.
Iowa taxes overtime and tips as ordinary income at the 3.8% flat rate. The One Big Beautiful Bill's overtime and tip exemptions apply only to federal income tax — Iowa has not enacted equivalent state exemptions. Use our Overtime Tax Calculator to see your federal savings on overtime pay.
Before the 2022 reform, Iowa had nine income tax brackets ranging from 0.33% to 8.53%. A single filer earning $75,000 paid an effective state rate of about 7% — one of the higher rates in the Midwest. The phasedown compressed those brackets first to a 6% top rate, then 4.82%, then the current flat 3.8%. The savings for a typical worker over those years amounted to $2,000–$4,000 per year in reduced state tax.