A Powerball jackpot bought in Idaho is taxed at 5.3% at the state level, close to the middle of the pack. On today's $674,000,000 jackpot that is about $15,046,106 to Idaho, leaving $163,853,837 from the $283,888,800 cash option.
Idaho has a flat 5.3% income tax and no local income tax. Lottery prizes are ordinary income, so the state share of a jackpot is a clean 5.3%.
Calculate your take-home
Idaho Powerball payout after tax
| Line | Lump sum | Annuity (30 payments) |
|---|---|---|
| Advertised jackpot | $674,000,000 | $674,000,000 |
| Amount paid out before tax | $283,888,800 | $674,000,000 |
| Federal tax (37% bracket) | −$104,988,856 | −$247,880,007 |
| Idaho tax (5.3%) | −$15,046,106 | −$35,722,000 |
| You keep | $163,853,837 | $390,397,992 |
| Share of the advertised jackpot | 24.3% | 57.9% |
Built from today's live cash value ($283,900,000). Single filer, standard deduction, no other income.
How Idaho taxes lottery winnings
Idaho uses a flat income tax, and lottery prizes are ordinary income — not capital gains, not a special category. Because a jackpot is far above the highest bracket threshold, the effective state rate on the prize is the top rate, 5.3%.
- Idaho withholds state tax on lottery prizes of $5,000 or more.
- The Idaho Lottery returns profits to public schools and the permanent building fund.
Three prizes, worked out for Idaho
| Prize | Cash value | Federal | Idaho | You keep |
|---|---|---|---|---|
| $1M | $421,200 | −$110,554 | −$22,324 | $288,322 |
| $10M | $4,212,000 | −$1,508,440 | −$223,236 | $2,480,324 |
| Current jackpot ($674M) | $283,888,800 | −$104,988,856 | −$15,046,106 | $163,853,837 |
Smaller prizes are worth checking against your own bracket: below roughly $640,600 of taxable income the federal rate is 35% or less, so the flat 37% used here overstates the bill on smaller wins.
If you live in Idaho but buy elsewhere
Lottery income is generally taxed by the state where the ticket was purchased, and again by your state of residence, with a credit for tax paid to the first state. That credit is usually capped at the home state's own rate, so a higher-tax home state still collects the difference.
That matters in Idaho because Wyoming is next door with no tax on a home-state ticket. Crossing the border to buy does not make the prize tax-free for a Idaho resident — it just adds a second state to the paperwork.
Residency is decided by facts — where you spend the year, where you vote, where your home is — not by the address you write on the claim form. Moving after the win does not retroactively change the state that taxes the prize.
Compare Idaho with its neighbours
| State | Rate on a jackpot | Take-home (lump sum) | Difference |
|---|---|---|---|
| Idaho | 5.3% | $163,853,837 | — |
| Montana | 5.65% | $162,860,227 | −$993,611 |
| Wyoming | 0% | $178,899,944 | +$15,046,106 |
| Oregon | 9.9% | $150,794,953 | −$13,058,885 |
All 46 jurisdictions are listed in the state tax index and the full rate table.
Frequently asked
Does Idaho tax Powerball winnings?
Yes. Idaho treats a Powerball jackpot as ordinary income and taxes it at 5.3% at the top marginal rate. On the current $674M jackpot that is about $15,046,106 on a lump-sum claim.
How much would I keep from the current jackpot in Idaho?
About $163,853,837 on the cash option ($283,888,800), or about $390,397,992 if you take the 30-payment annuity and stay in Idaho for all of it. Both figures are before any local tax, professional fees or other income.
Do I pay Idaho tax if I buy the ticket in another state?
Usually yes. Idaho taxes residents on worldwide income, so a prize won in a no-tax state such as Wyoming is still Idaho income. You would generally claim a credit for tax withheld by the state where you bought the ticket, but the credit rarely covers the full 5.3%.
Can I claim anonymously in Idaho?
Anonymity rules are set by the state lottery, not the tax code, and they change. Some states let a trust or LLC claim in place of the individual; others publish the winner's name regardless. Check the Idaho lottery claim rules before you sign the back of the ticket.