Montana State Tax on Lottery Winnings
Free Montana lottery tax calculator for Powerball and Mega Millions. Montana taxes lottery winnings at 5.65% (top marginal rate).
Current Powerball $516M jackpot, single filer
$121.97M
Actual take-home: 23.6% of what they advertise
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What to Know Before Claiming a Jackpot in Montana
Montana taxes lottery winnings at a top rate of 5.65%. It is also one of the strongest anonymity states in the country: under Montana law a winner's name is simply not public information, and the Lottery will not release it without the winner's express permission. What is public is limited to the prize amount, the store that sold the ticket, the winner's town, the game, and the date. You have six months to claim a Lotto prize, handled first come first served at the Helena headquarters. Lottery revenue goes to the state General Fund, with the first $2.25 million each year set aside for STEM scholarships.
- State tax rate (2026)
- 5.65% top rate
- Deadline to claim
- Six months from the drawing for Lotto games
- Anonymity
- Allowed. Under Montana law a winner's name is not public information, and the Lottery does not release it without the winner's express permission. Prize amount, retailer, town of residence, game, and date are public
- Where jackpots are claimed
- In person at Montana Lottery headquarters, 2525 North Montana Avenue, Helena, on a first come first served basis
- What proceeds fund
- The Montana General Fund, with the first $2.25 million each year funding STEM scholarships in science, technology, engineering, math, and healthcare at Montana colleges
Sources: Tax Foundation: Montana (2026 top rate 5.65%) · Montana Lottery: FAQs · Montana Lottery: Claim Your Prize · Montana Lottery: Giving Back
Montana Lottery Winnings Tax Overview
The Montana state tax on lottery winnings is 5.65%, a moderate rate near the middle of the 41 states that tax lottery payouts. Montana ranks number 17 in that group. If you win a Powerball or Mega Millions prize in Montana, 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 Montana lottery tax calculator above runs the full math for the current jackpot.
How the Montana Lottery Payout Calculator Works
In Montana, 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, Montana taxes lottery winnings at 5.65% 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 Montana lottery tax rate.
How Montana Compares to Other Lottery Tax States
Montana's 5.65% lottery tax rate ranks number 17 out of 41 taxed states. States with a higher lottery tax rate than Montana include New Mexico and Virginia. States with a lower rate include Kansas and Idaho. 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 5.65% of their lump sum compared to a winner in Montana.
Montana Lottery Tax FAQs
What is the Montana state tax on lottery winnings?
Montana taxes lottery winnings at a top marginal rate of 5.65%. 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 Montana?
Most Powerball and Mega Millions winners choose the lump sum cash option. In Montana, both options face the same 5.65% 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 Montana 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. Montana also withholds state tax at or near the 5.65% 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 Montana?
Yes. Under Montana law the name of a Montana Lottery winner is not public information, and the Lottery will not release a winner's name without that person's express permission. Some details stay public, including the amount won, the retailer that sold the ticket, the winner's community of residence, the game, and the date, but a jackpot winner can keep their name private.