Iowa Lottery Tax Calculator
Calculate your take-home winnings after 5.70% Iowa state tax and federal taxes.
State Tax Rate
5.70%
Iowa Income Tax
Federal Tax Rate
24–37%
24% withheld upfront
Max Combined Rate
42.70%
Federal + state
Iowa withholds 5.70% state income tax on lottery prizes above the threshold, in addition to 24% federal withholding. Your maximum combined rate could reach 42.70%.
Enter Your Winnings
Lump sum is approximately 55% of the advertised jackpot
Your estimated take-home winnings
$356,603
After 35.16% effective tax rate
Tax Breakdown
Cash value before taxes
Winnings Distribution
Frequently Asked Questions — Iowa Lottery Taxes
How much tax do I pay on a $1 million lottery win in Iowa?
On a $1 million lottery win in Iowa, the lump sum cash value is approximately $550,000. Federal withholding is 24% ($132,000) and Iowa state tax is 5.70% ($31,350). Your estimated take-home lump sum is approximately $386,650 — though your final federal tax bill may be higher depending on your total income for the year.
Does Iowa tax lottery winnings?
Yes. Iowa taxes lottery winnings at a 5.70% state income tax rate. This is in addition to federal taxes of 24-37%. The Iowa lottery withholds state taxes automatically on prizes above the threshold.
What is the lottery tax rate in Iowa?
In Iowa, the lottery tax rate is 5.70% at the state level, plus federal taxes of 24-37%. The federal government withholds 24% upfront on prizes over $5,000. Combined, lottery winners in Iowa may pay up to 42.70% in total taxes.
Lottery Tax in Iowa
Iowa imposes a 5.70% state income tax on lottery winnings (Iowa Income Tax). This is in addition to federal taxes of up to 37%. Combined, lottery winners in Iowa may pay up to 42.70% in total taxes.
The Iowa lottery withholds state taxes automatically on prizes over a certain threshold. If you are a non-resident winner, different withholding rates may apply.
Tax Sources & References
Federal withholding rates are based on IRS Topic No. 419 — Gambling Income and Losses. State tax rates are sourced from each state's department of revenue. Official Iowa lottery rules and prize information are published on the Iowa Lottery official website.
Disclaimer
This calculator provides estimates only and does not constitute tax advice. Actual tax amounts may vary based on your individual circumstances, deductions, and other income. Please consult a qualified tax professional for advice specific to your situation.