United States
Iowa: what the state takes
Iowa charges its own income tax on top of federal tax. Here is the rate, the return, the date and where the official rules live.
Agency page last read 11 September 2026.
State rate
3.8%
Flat 3.80% from 2025, after a deduction matching the federal one
Resident return
Form IA 1040
Iowa Department of Revenue
Due
30 April
Weekends and holidays can push it on
Try a figure
Yearly income
How you file
Iowa tax
$2,280
Top state rate you touch
3.8%
- Kept before federal tax$58,868
- Federal income tax$13,852
- Iowa tax$2,280
Flat rate of 3.8% on $60,000 after a $15,000 deduction.
Filing in Iowa
- Who collects it
- Iowa Department of Revenue
- Return
- Form IA 1040
- Deadline
- Usually 30 April
Federal comes on top
Whatever your state does, the IRS wants Form 1040 by 15 April, plus Social Security and Medicare through your wages or self employment tax. State tax paid can sometimes be deducted federally if you itemise, within a yearly cap.