Won big at the slots, a poker tournament, or the track? The casino withholds 24% on reportable winnings — but that is rarely your final bill. Estimate your real federal tax, the 3.8% Net Investment Income Tax, self-employment tax for professionals, and how much of your losses you can actually deduct.
| Line Item | Amount | How It's Calculated |
|---|---|---|
| Enter your figures and press Calculate. | ||
Situation: Single filer with $60,000 other income wins a $10,000 jackpot. The casino withholds 24% ($2,400). She does not itemize, so $2,000 of losing tickets give no offset.
Calculation: Winnings push taxable income from $45,000 to $55,000. The extra $10,000 is taxed partly at 12% and partly at 22%, adding $1,852.50 of real tax — less than the $2,400 withheld.
Situation: An MFJ couple with $300,000 other income wins $50,000. The $10,000 buy-in is a wagering loss, deductible only if they itemize.
Calculation: At $350,000 MAGI the marginal bracket is 24% → $12,000 income tax. MAGI above $250,000 triggers the 3.8% NIIT on $50,000 = $1,900.
Situation: A single professional bettor with no other income reports a $40,000 Schedule C profit.
Calculation: SE tax = $40,000 × 92.35% × 15.3% ≈ $5,652. Half ($2,826) is deductible, leaving taxable income of $22,174 and income tax ≈ $2,422.
24% = mandatory federal withholding rate on reportable gambling winnings (Form W-2G). A 25% rate applies when the payor cannot obtain the winner's TIN.
Bracket tax = winnings are stacked on top of your other income, so they are taxed at your marginal rate: 10%, 12%, 22%, 24%, 32%, 35% or 37%.
NIIT = 3.8% on the lesser of gambling income or MAGI above $200,000 (single/HOH) or $250,000 (MFJ).
SE tax = 15.3% applied to 92.35% of net professional gambling profit (Social Security wage base applies).
Deductible losses = the lower of total losses or total winnings, and only if you itemize on Schedule A.
| Type of Wager | W-2G Required | Withholding |
|---|---|---|
| Slot machines, bingo, keno | $1,200+ | 24% |
| Poker tournaments | $5,000+ (less buy-in) | 24% |
| Horse / dog racing, jai alai | $600+ and 300× the wager | 24% |
| Other wagering transactions | $600+ and 300× the wager | 24% |
| Any winnings — payor lacks TIN | Backup rules apply | 25% |
Winnings below these thresholds are still taxable income — you report them even when the casino issues no form and withholds nothing.
| Rate | Single | Married Filing Jointly | Head of Household |
|---|---|---|---|
| 10% | $0–$11,925 | $0–$23,850 | $0–$17,000 |
| 12% | $11,925–$48,475 | $23,850–$96,950 | $17,000–$64,850 |
| 22% | $48,475–$103,350 | $96,950–$206,700 | $64,850–$103,350 |
| 24% | $103,350–$197,300 | $206,700–$394,600 | $103,350–$197,300 |
| 32% | $197,300–$250,525 | $394,600–$501,050 | $197,300–$250,500 |
| 35% | $250,525–$626,350 | $501,050–$751,600 | $250,500–$626,350 |
| 37% | Over $626,350 | Over $751,600 | Over $626,350 |
Built around the actual IRS reporting triggers: $1,200 for slots and bingo, $5,000 for poker tournaments, and $600 plus 300× the wager for racing and other bets.
The 24% withheld is only a down payment. Your true bill depends on your marginal bracket, so a high earner can owe far more than 24% while a low earner gets money back.
Professionals report net profit on Schedule C and pay 15.3% self-employment tax. Casual players report gross winnings on Schedule 1 as Other income — with no SE tax.
Gambling losses are deductible only up to winnings and only if you itemize. The standard deduction gives you no loss offset whatsoever — a trap many winners fall into.
The US taxes gambling winnings as ordinary income with no exclusion and no de minimis rule. The 24% mandatory withholding on reportable winnings is only an estimate — your actual rate is your marginal bracket, which can be higher or lower than 24%.
Casual gamblers report winnings as "Other income" on Schedule 1 of Form 1040 and cannot deduct losses unless they itemize on Schedule A. Professional gamblers report net profit on Schedule C, pay 15.3% self-employment tax, and can deduct ordinary business expenses.
Gross winnings on Schedule 1. No self-employment tax. Losses deductible only as an itemized deduction, capped at total winnings. Standard-deduction filers lose every dollar of losing bets.
Net profit on Schedule C. Owes 15.3% self-employment tax on 92.35% of net profit plus income tax. Business expenses deductible. Quarterly estimates required.
A taxpayer in the 32%–37% bracket owes far more than the 24% withheld. Add the 3.8% NIIT above $200,000 MAGI ($250,000 MFJ) and the true rate can approach 40%. That gap becomes a bill due at filing, plus possible underpayment penalties.
The IRS looks at continuity, regularity, and profit motive. A once-a-year Vegas trip is a hobby; a full-time poker or sports-betting career is a business. Here is how a $40,000 profit is taxed for a single filer with no other income.
| Tax Item | Casual (Schedule 1) | Professional (Schedule C) |
|---|---|---|
| Reporting | Gross winnings as Other income | Net profit after business expenses |
| Loss offset | Itemize only, capped at winnings | Ordinary business loss rules |
| Self-employment tax (15.3%) | $0 | $5,652 |
| Income tax on $40,000 | ≈ $2,762 | ≈ $2,422 |
| Total federal tax | ≈ $2,762 | ≈ $8,074 |
| Net kept | ≈ $37,238 | ≈ $31,926 |
The professional pays about $5,312 more tax on the same $40,000, funding Social Security and Medicare — but can deduct mileage, airfare, hotels, entry fees, and a home office used for handicapping. The professional's income tax is slightly lower because half the self-employment tax is deductible.
Win $10,000 at blackjack and lose $9,000 elsewhere: on the standard deduction you owe tax on the full $10,000. Even when you itemize, the deduction is capped at winnings and may not beat the standard deduction, so the real benefit can be far smaller than the loss.
⚠️ Disclaimer: This gambling tax calculator provides federal estimates for educational purposes only and is not tax, legal, or financial advice. Figures use 2025/2026 federal brackets (10/12/22/24/32/35/37%), standard deductions of $15,000 single / $30,000 married filing jointly / $22,500 head of household, the 24% W-2G withholding rate (25% when no TIN is provided), the 3.8% NIIT thresholds, and the 15.3% self-employment tax rate. It ignores state and local gambling taxes, the Social Security wage base cap, QBI deductions, credits, and other income adjustments. Actual liability depends on your full return. Consult a qualified tax professional before filing.