How much to set aside for taxes in Iowa
Enter what you get paid and how often. You get the percentage to move out of every deposit in Iowa, in dollars, plus what each quarterly payment should be — with the 3.8% state rate already applied.
What you get paid
Set aside
20% of every payment
That's $302 out of each week. Move it the day the money lands.
- Gross for the year
- $78,000
- Net profit after expenses
- $66,300
- Self-employment tax
- $9,368
- Federal income tax
- $3,824
- State income tax
- $2,519
- Total tax for the year
- $15,711
- Each quarterly payment
- $3,928
Quarterly estimates are due around April 15, June 15, September 15 and January 15.
The right reserve percentage for Iowa
Iowa applies a flat 3.8% individual income tax on top of federal income tax and the 15.3% self-employment tax. That is why the blanket "save 30%" advice misses here: Iowa filers typically need 28-33% of net profit, not a round number borrowed from someone in another state.
Iowa completed its move to a 3.8% flat individual rate.
The mechanic matters more than the number. Tax trouble is a cash failure, not a math failure — money arrives, looks like income, and gets spent. Moving the reserve out the day each deposit lands is what keeps the Iowa and federal bills funded.
Frequently asked questions
How much should I set aside for taxes in Iowa?
Most self-employed people in Iowa reserve 28-33% of net profit. Iowa applies a flat 3.8% individual income tax on top of federal income tax and the 15.3% self-employment tax. Use the calculator above with your own income and expenses for an exact percentage.
Should I save a percentage of gross or net in Iowa?
Tax is owed on net profit, but the practical move is a fixed percentage of every deposit the day it lands. The calculator converts your Iowa tax bill into a percentage of gross so the transfer can be automatic.
What are the quarterly deadlines in Iowa?
Federal estimates are due around April 15, June 15, September 15 and January 15, and Iowa runs a state estimate schedule on roughly the same dates.
Are there local taxes to reserve for in Iowa?
Iowa does not add a broad local income tax on self-employment earnings, so your reserve only needs to cover state and federal.
What if I under-reserve in Iowa?
You still owe the tax, plus a federal underpayment penalty if you owed $1,000 or more without making estimates, and Iowa charges its own interest on late state estimates. The penalty accrues like interest, so it grows until paid.
Estimates only, using projected 2026 federal figures and state rates for planning. Not tax advice.
Run the same numbers for another state
State income tax is the biggest variable in the result. Pick your state for a pre-filled estimate.