Idaho State Tax on Lottery Winnings
Free Idaho lottery tax calculator for Powerball and Mega Millions. Idaho taxes lottery winnings at 5.30% (top marginal rate).
Current Powerball $516M jackpot, single filer
$122.71M
Actual take-home: 23.8% of what they advertise
What You'd Actually Take Home.
Lottery Tax Calculator for Powerball, Mega Millions, and Every State.
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Standard deduction: $16,100. All lottery income is taxed at your individual rate. This is the most common filing status for winners.
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What to Know Before Claiming a Jackpot in Idaho
Idaho taxes lottery winnings at a flat 5.3%. Winner privacy is not an option here. Idaho Public Records Law requires the Lottery to release a winner's name, prize amount, and town of residence to anyone who asks. Proceeds fund school buildings rather than general classroom budgets. Most of the Lottery dividend goes to the School Facilities Fund, which every district receives based on enrollment to pay down voter-approved school bonds and levies. You have 180 days to claim the prize.
- State tax rate (2026)
- 5.3% flat state income tax
- Deadline to claim
- 180 days from the draw date
- Anonymity
- Not available. Idaho Public Records Law requires the Lottery to release the winner's name, prize amount, and town of residence to anyone who requests it
- What proceeds fund
- The School Facilities Fund, paying down voter-approved school district bonds and levies, plus the state Permanent Building Fund
Sources: Idaho State Tax Commission: What's New for 2025 · Idaho Lottery: Claim Winnings · Idaho Lottery: Where the Money Goes
Idaho Lottery Winnings Tax Overview
The Idaho state tax on lottery winnings is 5.3%, a moderate rate near the middle of the 41 states that tax lottery payouts. Idaho ranks number 19 in that group. If you win a Powerball or Mega Millions prize in Idaho, the federal lottery tax of up to 37% applies on top of the state rate, and both reduce your lump sum cash option before the money ever reaches you. The Idaho lottery tax calculator above runs the full math for the current jackpot.
How the Idaho Lottery Payout Calculator Works
In Idaho, the lottery payout calculation begins with the lump sum cash option, which equals roughly 45% of the advertised jackpot. The IRS withholds 24% federal lottery tax at the moment of payout, but a Powerball or Mega Millions prize pushes the winner into the 37% top federal bracket, so additional federal tax comes due at filing. On top of that, Idaho taxes lottery winnings at 5.3% of the full lump sum. The lottery payout calculator above runs all of this math for you, using IRS 2026 brackets and the top marginal Idaho lottery tax rate.
How Idaho Compares to Other Lottery Tax States
Idaho's 5.3% lottery tax rate ranks number 19 out of 41 taxed states. States with a higher lottery tax rate than Idaho include Montana and Kansas. States with a lower rate include South Carolina and Alabama. For context, 10 states collect no lottery tax at all, which means a Powerball or Mega Millions winner in one of those states keeps an extra 5.3% of their lump sum compared to a winner in Idaho.
Idaho Lottery Tax FAQs
What is the Idaho state tax on lottery winnings?
Idaho taxes lottery winnings at a top marginal rate of 5.3%. This rate applies to the lump sum cash option from any Powerball or Mega Millions prize, and it is paid in addition to the federal lottery tax of up to 37% at the highest bracket. The lottery tax calculator above shows the exact dollar amount for any current jackpot.
Should I take the lump sum or annuity in Idaho?
Most Powerball and Mega Millions winners choose the lump sum cash option. In Idaho, both options face the same 5.3% state lottery tax rate, but the annuity spreads the tax across 30 years while the lump sum delivers the full cash value now. The lottery payout calculator above shows the lump sum after taxes; the annuity choice is a separate financial decision based on personal goals and investment return assumptions.
Does Idaho withhold tax on a lottery payout before payment?
The IRS withholds 24% federal lottery tax on any lottery prize above $5,000 before the winner ever sees the check. Idaho also withholds state tax at or near the 5.3% top rate at the moment of payout. The remaining federal balance, up to the 37% top bracket, then comes due in April when the winner files a federal return.
Can you stay anonymous if you win the lottery in Idaho?
No. Under Idaho Public Records Law, the Lottery is required to release a winner's name, prize amount, and town of residence to any member of the public or press who requests it. There is no exception for large prizes, so an Idaho jackpot winner should plan for their identity to become public once the prize is claimed.