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Lottery Calculator

Idaho Lottery Tax Calculator

Won the lottery in Idaho? The state taxes lottery winnings as ordinary income. For planning purposes, the calculator below estimates Idaho tax using the flat rate of 5.30% for 2026. Enter your jackpot to see estimated federal tax, state tax, and take-home for a lump sum or annuity.

State
Idaho
Tax year
2026
State tax treatment
Taxed as ordinary income
Applicable state tax
5.30% (flat planning rate)
State withholding
Not shown — varies by lottery; no single verified figure
Last verified
Tax information last verified: 2026-09-28

Planning estimate only. Actual Idaho tax depends on brackets, deductions, exemptions, credits, and local taxes.

Estimate your Idaho lottery winnings

How will you take the prize?

The advertised annuity jackpot.

The lump-sum cash value offered.

Used to estimate state tax on the winnings.

Idaho lottery tax examples

Worked examples for a single filer taking the lump sum in 2026, calculated with the same engine as the calculator above. Cash value is assumed at 48% of the advertised jackpot for illustration — actual cash values vary by lottery and drawing.

Estimated Idaho lottery taxes for three jackpot sizes, 2026
Jackpot Cash Value Estimated Federal Tax Estimated State Tax Estimated Take-Home
$1,000,000 $480,000 $131,134 $25,440 $323,426
$10,000,000 $4,800,000 $1,726,000 $254,400 $2,819,600
$100,000,000 $48,000,000 $17,710,000 $2,544,000 $27,746,000

How Idaho taxes lottery winnings

Idaho treats lottery winnings like any other ordinary income — wages, in effect. For 2026 we estimate the state tax by applying the flat rate of 5.30% flat to the winnings.

That's a planning estimate, not a precise return calculation. Your actual Idaho tax depends on the state's brackets, deductions, exemptions, credits, and any local taxes, which aren't included.

Nearby Washington and Nevada don't tax lottery winnings at the state level — a reminder that where you live can matter as much as where you bought the ticket.

Federal taxes on lottery winnings

The federal government taxes lottery winnings as ordinary income — the same category as your salary. For 2026, that means marginal rates from 10% up to 37%, applied after the standard deduction ($16,100 for single filers, $32,200 for married couples filing jointly).

A jackpot-sized win lands almost entirely in the top brackets, which is why the federal tax is usually the largest slice of any prize. Your filing status matters: the same winnings can produce a meaningfully different federal bill for a single filer versus a married couple filing jointly — try both in the calculator above.

Withholding vs. your final tax bill

Federal law requires 24% withholding on lottery winnings over $5,000. It's a prepayment credited against your final federal tax, not the final tax itself — on a large prize you'll typically owe more at filing time.

States and lotteries also withhold for state tax, but the rates and rules vary enough that we don't show a single state withholding figure. Check the official Idaho lottery's prize-claim information for what will actually be withheld from your check.

Cash option vs. annuity

The advertised jackpot is the annuity value: 30 equal annual payments. Each payment is taxed in the year you receive it — federally and by Idaho under that year's rules — which can keep more of the prize in lower brackets than a single lump sum.

The lump sum (cash option) is smaller than the advertised jackpot but taxed once, now. Toggle between the two in the calculator to compare.

How We Calculate

  1. Start with the selected lottery amount. Enter the advertised jackpot and the cash option (or choose the annuity to estimate one annual payment).

  2. Determine the cash or taxable amount. For a lump sum, the cash option is the taxable amount. For an annuity, each annual payment is taxed in the year it is received.

  3. Apply applicable federal tax rules. Lottery winnings are taxed as ordinary income. The calculator subtracts the standard deduction for your filing status, then applies that year's progressive federal tax brackets.

  4. Apply applicable state rules. The calculator applies the state's configured planning rate. States that do not tax lottery winnings show $0 state tax. Local and city taxes are not included.

  5. Calculate estimated total tax. Estimated federal and state taxes are added together for the total estimated tax liability.

  6. Calculate estimated take-home amount. Estimated total tax is subtracted from the taxable amount. This is an estimate of final liability — withholding shown separately is what may be held back when you are paid, and it is credited against this liability.

Results are estimates for informational purposes only — not tax, legal, or financial advice. Your actual tax bill depends on your full tax return, the lottery's rules, and the laws in effect when you claim the prize.

Idaho lottery tax FAQs

Does Idaho tax lottery winnings?

Yes. Idaho taxes lottery winnings as ordinary income. For 2026 we use a flat planning rate of 5.30% to estimate the state tax.

How is the Idaho lottery tax estimated?

We apply the 5.30% flat rate flat to the winnings as a planning estimate. Your actual tax depends on Idaho's brackets, deductions, exemptions, credits, and any local taxes.

How much will be withheld from my Idaho lottery winnings?

Federal withholding is 24% on winnings over $5,000. State withholding varies by lottery and prize, so we don't present a single verified figure — check the official Idaho lottery's claim information.

Should I take the lump sum or the annuity in Idaho?

Tax-wise, the annuity spreads income across 30 tax years, which can mean lower brackets each year. The lump sum is taxed all at once but gives you the money now. The calculator above estimates both; the right choice also depends on investing, spending, and personal factors — not just tax.

Sources & References