What you owe on winnings, what losses can offset, and when the casino files a W-2G
| W-2G issued at… | Game | Withholding |
|---|
Gambling taxes have a design that surprises every winner: all winnings are ordinary income — from jackpots to a $20 scratch-off — while losses deduct only if you itemize, only up to winnings, and (from 2026) only at 90 cents on the dollar. The result: a bettor who wins $12,000 and loses $9,000 "made" $3,000 but may owe tax on the full $12,000. This calculator runs the honest math, the W-2G thresholds that trigger paperwork, and the record-keeping that protects the loss deduction.
| Side | Treatment |
|---|---|
| Winnings | 100% ordinary income on Schedule 1 — reported whether or not any form was issued |
| Losses | Itemized deduction only, capped at winnings (never a net loss deduction), and capped at 90% of losses from 2026 |
| The standard-deduction trap | ~90% of filers don't itemize — their losses deduct $0, and they're taxed on gross wins |
Casinos and books issue Form W-2G at game-specific thresholds — $1,200 slots, $1,500 keno, $5,000 poker tournaments, and $600-plus-300× odds for lotteries and sports — with 24% federal withholding on the big ones. Two things every bettor should know: the W-2G goes to the IRS (unreported W-2G income generates automatic matching notices), and the absence of a W-2G changes nothing legally — your $800 parlay win is taxable income with or without paperwork. Online sportsbooks' annual statements make your activity fully visible either way.
New law caps deductible losses at 90% of actual losses from 2026: a break-even year (win $100k, lose $100k) now shows $10,000 of phantom income. For casual bettors it's a haircut; for high-volume and professional players it's existential — a 1%-edge pro can owe more tax than profit. Professionals (Schedule C filers with genuine profit motive) deduct losses and expenses against winnings but pay SE tax; the bar for "professional" status is high and litigated.
Legally, yes — all winnings are income regardless of paperwork. Practically, enforcement runs through W-2Gs and online-platform records, and online betting is fully visible. Report honestly; the standard-deduction trap is the real cost, not the reporting.
No — that's the central error. Gross wins are income; losses are a separate itemized deduction capped at wins. Only within a single casual gambling session may results net.
That's a deposit, not the bill: your true rate is your marginal bracket (possibly higher than 24%, plus state). Big wins can also push you into IRMAA/credit phaseouts. Settle up at filing; the Tax Refund Estimator shows the year's picture.
As ordinary income in the year received — a big jackpot lands mostly in the 37% bracket plus state tax. Annuity payments spread the income (and brackets) over 30 years; the lump-vs-annuity choice is a real calculation, not a reflex.
Regular, continuous activity with genuine profit intent and businesslike records — a facts-and-circumstances test courts apply skeptically. Pros file Schedule C: losses and expenses deduct against winnings, SE tax applies, and the 2026 90% cap still bites.
They help but aren't gospel — the IRS treats them as estimates. Your own contemporaneous log plus the statement is the combination that survives exams.
Yes — every figure computes locally in your browser.
Bet knowing the house edge includes the tax code: wins are income, losses need itemizing and a log, and 2026 taxes even break-even years. Keep the session log from January 1 — it's the cheapest insurance in gambling.