Guide
Sports betting taxes: the 90% gambling loss deduction and your real break-even
Sports betting winnings are taxable income and you can deduct only 90% of your losses, and only if you itemize, so a bettor who wins exactly what they lose still owes federal tax and the break-even at -110 rises from 52.4% to about 53.1% in the 22% bracket.
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By the Betwatch team. Published Nov 4, 2026, updated Nov 10, 2026.
Worked example: 1,000 bets of $100 at -110, 22% bracket
Take two bettors. One wins 52.4% of the time, the old break-even, and ends the year flat. The other wins 55% and makes $5,000. Winnings are the profit on each winning bet added up; losses are the stakes on each losing bet.
Both already itemize because of other deductions, so the full 90% of their losses counts. The last two lines show the standard deduction instead, where gambling losses count for nothing.
Real profit
$0.00
Taxed as income
$4,761.90
Federal tax
$1,047.62
After tax
-$1,047.62
- Itemizing
- Standard
- Before tax
Data table
| Itemizing | Standard | Before tax | |
|---|---|---|---|
| 10% | 52.7% | 55.0% | 52.4% |
| 12% | 52.7% | 55.6% | 52.4% |
| 22% | 53.1% | 58.5% | 52.4% |
| 24% | 53.2% | 59.1% | 52.4% |
| 32% | 53.5% | 61.8% | 52.4% |
| 35% | 53.7% | 62.9% | 52.4% |
| 37% | 53.8% | 63.6% | 52.4% |
Federal tax only, at one bracket. A rough guide, not tax advice.
| Line | 52.4% bettor | 55% bettor |
|---|---|---|
| Winnings | $47,619 | $50,000 |
| Losses | $47,619 | $45,000 |
| Real profit | $0 | $5,000 |
| Deductible (90% of losses) | $42,857 | $40,500 |
| Taxable gambling income | $4,762 | $9,500 |
| Federal tax if itemizing | $1,048 | $2,090 |
| After tax if itemizing | -$1,048 | $2,910 |
| Federal tax on standard deduction | $10,476 | $11,000 |
| After tax on standard deduction | -$10,476 | -$6,000 |
The flat bettor pays $1,048 on no profit at all. That is about 1% of every dollar wagered, a second vig the sportsbook never sees. The 55% bettor on the standard deduction has the worst line in the table: a winning year that ends $6,000 down.
Your real break-even after tax
Nobody prices this in, so here is the math. At -110, the break-even win rate before tax is 52.4%. Set your after-tax result to zero under the 90% rule and it climbs with your bracket. If you take the standard deduction it climbs much faster, because every dollar of winnings is taxed and no loss counts against it.
| Federal bracket | Itemizing (90% rule) | Standard deduction |
|---|---|---|
| 12% | 52.7% | 55.6% |
| 22% | 53.1% | 58.5% |
| 24% | 53.2% | 59.1% |
| 32% | 53.5% | 61.8% |
| 35% | 53.7% | 62.9% |
| 37% | 53.8% | 63.6% |
The right-hand column looks absurd because it is. It is also what a casual bettor with a modest year and no mortgage is actually facing, if they report what they should. Most bettors have never seen this number.
The itemizing trap
Gambling losses go on Schedule A, so they only help if your total itemized deductions beat the standard deduction: $16,100 for a single filer and $32,200 for a joint return on 2026 returns. A single bettor with $8,000 in winnings, $8,000 in losses and no other deductions gets nothing from them, since $7,200 of deductible losses is below $16,100. All $8,000 is taxable.
A bigger year does not escape this. Take the flat bettor above with no other deductions. Itemizing beats the standard deduction, but the first $16,100 of those losses only replaces a deduction they would have had anyway, so the tax is $4,590, not $1,048. Set other deductions to zero in the calculator to see it.
Losses also cap at winnings. A year that ends in the red does not create a deduction against your salary, and it does not carry forward to next year.
What the sportsbook reports, and what you still owe
A book issues a Form W-2G for a sports win of at least $2,000 that is also at least 300 times the stake, so in practice only long parlays trigger it. Withholding of 24% starts at $5,000 on the same 300-times test. Neither threshold decides what is taxable: every dollar of winnings belongs on your return, with or without a form.
The IRS expects a record of each session or bet: date, book, stake and result. Download your year-end win/loss statement from each sportsbook as well, and keep it with the rest, since an app's account history can vanish when you close the account.
What actually moves the number
Because tax falls on gross winnings, volume is what costs you. Betting $100,000 to clear $5,000 costs more tax than betting $25,000 to clear the same $5,000, since the deduction shortfall grows with your losses. A tenth of your losses is taxed however good your bets were.
That makes price the lever you control. Getting -105 instead of -110 lowers your before-tax break-even by more than a full point, more than the 90% rule costs most itemizers, and you get it on every bet. A better number at the same stake is a higher return with no extra volume.
Filing as a professional gambler on Schedule C removes the itemizing problem, but not the 90% limit, and the bar for that status is high. Bills to restore the full deduction have been introduced in Congress; none has passed. Some states, Illinois among them, tax winnings with no loss deduction at all, so check your own state. This page is general information, and a tax professional can tell you how it applies to you.
What to do before you file
1. Download a win/loss statement from every sportsbook, exchange and pick'em app you used this year.
2. Add up your winnings and your losses separately. Do not net them: the return shows them apart.
3. Run them through the calculator above with your bracket, to see the tax with and without itemizing.
4. Add your other itemized deductions, such as mortgage interest and state taxes, and compare the total with the standard deduction.
5. Next year, keep the log as you go, and put the same attention on price that you put on picks. The Live Board shows the best price at every book.
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Sports betting taxes: the 90% gambling loss deduction and your real break-even: questions
Do I have to pay taxes on sports betting winnings?
Yes. All winnings are taxable income, whether or not the sportsbook sends you a form, and they go on your federal return each year.
What is the 90% rule on gambling losses?
Starting with the 2026 tax year, you can deduct only 90% of your gambling losses, and never more than your winnings. If you win $10,000 and lose $10,000, you deduct $9,000 and pay tax on $1,000 you never made.
Can I deduct gambling losses if I take the standard deduction?
No. Gambling losses are an itemized deduction, so on the standard deduction they count for nothing and all your winnings are taxed.
At what amount does a sportsbook report my winnings to the IRS?
A Form W-2G goes out on a win of at least $2,000 that is also at least 300 times the stake. You owe tax on smaller wins too; the form only decides what the book reports.
Can I net my wins and losses by the session?
Sessions are clearest for slot play, and there is no settled rule for sports bets, which most people record bet by bet. Ask a tax professional before relying on netting, since it can change your taxable winnings a lot.
Are Kalshi and Polymarket profits taxed like sports betting?
The tax treatment of prediction market contracts is not settled, and it may differ from gambling winnings, including under the 90% rule. Keep full records and take the question to a tax professional.
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