Lottery winnings are subject to mandatory federal withholding the moment they’re paid out, plus a separate state withholding that varies widely by location.
How it works
The IRS requires 24% mandatory federal withholding on lottery winnings; multiplying by an adjustable state withholding rate (some states have none) gives the total withheld and the net payout.
What this does not include
This does not include your final tax liability — the 24% federal withholding is often less than the actual tax owed at higher income levels, meaning additional tax may be due when filing. This estimates withholding at payout, not a final bill.
How to use this calculator
- Enter the winnings amount and your state’s withholding rate.
A worked example
$1,000,000 in winnings at a 5% state tax rate: federal withholding = $240,000 (24% federal rate), state withholding = $50,000, net payout = $710,000.
The same winnings with a 0% state tax rate: net payout = $760,000 — the federal withholding alone still takes a substantial cut regardless of state.
What the variables mean
| Variable | Meaning |
|---|---|
| Winnings | Gross lottery prize amount |
| State rate | State tax rate on lottery winnings, which varies widely (some states have none) |
Edge cases worth knowing
This shows withholding at the time of payout, not necessarily the final tax bill. Large winnings often push the winner into a higher tax bracket than the flat federal withholding rate, meaning additional tax may be owed when filing.
Some states charge no tax on lottery winnings at all — the 0% example above reflects that real scenario, not a placeholder value.
Frequently asked questions
Is 24% the final tax rate on lottery winnings?
No — it’s the mandatory withholding rate at the time of payout; large jackpots often push a winner into a higher tax bracket, meaning more tax can be owed when filing.
Do all states withhold state tax on lottery winnings?
No — some states have no state income tax at all, in which case the state withholding rate is simply 0%.
Does this differ from the site’s general gambling tax calculator?
Yes — that one handles itemized winnings-minus-losses for casino-style gambling; lottery winnings have mandatory withholding applied directly at payout instead.
