Indiana: what the state takes
Indiana 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%
Flat 3.00% state rate, county tax is extra
Resident return
Form IT-40
Indiana Department of Revenue
Due
15 April, following the federal deadline
Weekends and holidays can push it on
Indiana counties add their own local income tax on top of the state rate.
Try a figure
Yearly income
How you file
Indiana tax
$2,220
Top state rate you touch
3%
- Kept before federal tax$58,928
- Federal income tax$13,852
- Indiana tax$2,220
Flat rate of 3% on $74,000 after a $1,000 deduction.
Filing in Indiana
- Who collects it
- Indiana Department of Revenue
- Return
- Form IT-40
- Deadline
- Usually 15 April, following the federal deadline
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.