You can deduct gambling losses, but only if you itemize and only up to the amount of your gambling winnings

The IRS allows you to deduct gambling losses on Schedule A (Itemized Deductions) if you report gambling income. The catch: your loss deduction cannot exceed your gambling winnings for the year. If you won $500 and lost $800, you can deduct only $500 in losses. You cannot use gambling losses to reduce other income like wages or investment gains.

You must keep detailed records of every gambling transaction — wins and losses both — because the IRS requires documentation. A casino receipt, lottery ticket, or betting slip is not enough by itself. You need a personal log with dates, locations, amounts wagered, and amounts won or lost. Without this record, the IRS will disallow your deduction if you are audited.

Gambling income includes winnings from casinos, racetracks, lotteries, online betting sites, poker tournaments, and sports betting. It also includes non-cash prizes like cars or vacations, which you must report at fair market value. If a casino or sportsbook issued you a Form W-2G (Certain Gambling Winnings), that amount is already reported to the IRS under your name and Social Security number.

Key Takeaways

  • Gambling losses reduce only gambling winnings, not other income, and you can deduct losses only up to the total amount you won in the same tax year.
  • You must itemize deductions on Schedule A to claim gambling losses; the standard deduction route does not allow this deduction.
  • Keep a written log with dates, locations, amounts wagered, and results for every gambling transaction, because the IRS requires proof.
  • Gambling income from casinos, lotteries, online sportsbooks, and poker tournaments must be reported on Form 1040, line 21 (or the equivalent on your return).
  • If you received a Form W-2G from a casino or sportsbook, that income is already reported to the IRS and you must include it on your return.

Reporting gambling income on your tax return

Start by adding up all your gambling winnings for the year. This includes cash payouts, the value of prizes you won, and any Form W-2G amounts issued to you. Report the total on Form 1040, line 21 (Other Income), or on Schedule 1 if you use that form. The exact line number depends on your tax software or form version, so check the instructions for the year you are filing.

If you received a Form W-2G, the casino or sportsbook has already sent a copy to the IRS. You must report at least that amount, even if your actual winnings were lower (which would be unusual). If you won money at a location that did not issue a W-2G — for example, a poker game with friends or a small local bet — you still report it as income.

Report the income even if you had net losses for the year. The IRS wants to see the full picture: what you won and what you lost. This is why the record-keeping matters so much. Without a detailed log, you cannot prove the losses existed.

Itemizing deductions to claim gambling losses

To deduct gambling losses, you must file Schedule A (Itemized Deductions) instead of taking the standard deduction. For the 2024 tax year, the standard deduction is $14,600 for single filers and $29,200 for married filing jointly. If your total itemized deductions (including gambling losses, mortgage interest, state and local taxes, charitable donations, and medical expenses) exceed the standard deduction, itemizing saves you money. If they do not, take the standard deduction and skip the gambling loss deduction.

On Schedule A, line 28 is labeled "Other miscellaneous deductions." This is where you enter your gambling losses. Write "Gambling losses" next to the amount so the IRS knows what the deduction is for. The amount cannot exceed your gambling winnings for the year.

Many filers find that their itemized deductions do not exceed the standard deduction, especially after the 2017 tax law changes capped the state and local tax deduction. If that is your situation, you cannot claim gambling losses even if you had them. The math straightforward does not work in your favor.

Keeping records the IRS will accept

The IRS Publication 529 (Miscellaneous Deductions) states that you must keep a contemporaneous written record of your gambling activity. This means a log you wrote down at the time or shortly after, not a reconstruction months later from memory. Your record should include the date, the type of gambling (casino, sportsbook, lottery, etc.), the location, the amount you wagered, and the amount you won or lost.

A casino receipt or betting slip alone is not sufficient proof. The IRS wants to see your own documentation showing the pattern of your activity over time. A straightforward notebook, spreadsheet, or even a note-taking app works, as long as you can show it was created around the time the gambling happened. If you are audited, you will need to produce this log.

Keep receipts, tickets, and statements from casinos and sportsbooks as supporting evidence. If you gambled at a casino, ask for a player's card statement showing your activity. If you bet online, read or print your account history. These documents back up your written log and show the IRS that your numbers are real.

What happens if you received a Form W-2G

A Form W-2G is issued when you win more than a certain amount at a casino or sportsbook. The threshold varies by game: $600 or more from bingo or slot machines, $1,200 or more from horse racing, $1,500 or more from keno, or $5,000 or more from a poker tournament. The casino or sportsbook sends you a copy and files a copy with the IRS.

You must report the W-2G amount as income on your return, even if you had overall losses for the year. The IRS already knows about this win because the business reported it. If you do not report it, the IRS will notice the mismatch and send you a notice.

You can still deduct your gambling losses on Schedule A, but only up to the total of all your winnings (including the W-2G amount). If the W-2G shows $2,000 in winnings and you also won $500 elsewhere, your total winnings are $2,500. Your loss deduction cannot exceed $2,500.

Losses from different types of gambling

The rules are the same whether you gambled at a casino, bought lottery tickets, bet on sports, played poker online, or wagered at a racetrack. All gambling losses are treated the same way: they reduce only gambling winnings, and you must have records to prove them.

Losses from casual gambling with friends (poker night, friendly bets) count the same as casino losses. You still need a written record. Losses from illegal gambling also count, though reporting them raises other tax issues you may want to discuss with a tax professional.

Losses from fantasy sports leagues and daily fantasy sports sites are treated as gambling losses under current IRS guidance. If you won money from a fantasy sports site, report it as gambling income. If you lost money, you can deduct it the same way as casino losses, up to your winnings.

When gambling losses exceed your winnings

If you lost more than you won, you cannot deduct the excess. For example, if you won $1,000 and lost $3,000, you can deduct only $1,000 in losses. The remaining $2,000 in losses disappears; you cannot carry it forward to next year or use it to offset other income.

This is why record-keeping is critical. You need to prove both your winnings and your losses so you can calculate the correct deduction. If you cannot document your losses, you cannot claim them at all.

Some people think of gambling losses as a business expense if they gamble frequently or consider themselves a professional gambler. The IRS is skeptical of this claim and requires strong evidence: a business plan, consistent profit motive, time spent on gambling as a business, and records showing a pattern of profit over several years. Most casual and even frequent gamblers do not meet this test. Consult a tax professional if you think you might may have access to.

Frequently Asked Questions

Can I deduct gambling losses if I take the standard deduction?

No. Gambling losses are an itemized deduction, so you can claim them only if you file Schedule A. If your total itemized deductions do not exceed the standard deduction for your filing status, you cannot use gambling losses to reduce your taxable income.

Do I have to report gambling winnings if they were small?

Yes. All gambling winnings, no matter how small, must be reported as income on your tax return. The IRS does not have a minimum threshold for reporting. If you won $50 in the lottery, report it.

What if I lost money gambling but did not win anything that year?

You cannot deduct losses if you had no winnings. Gambling losses reduce only gambling winnings. If you had zero winnings, your loss deduction is zero, even if you lost thousands of dollars.

How long do I need to keep my gambling records?

Keep your records for at least three years after you file the return. The IRS can audit returns going back three years in most cases, and longer if they suspect fraud. Store receipts, betting slips, account statements, and your written log together in a safe place.

If I won money online, do I still need to report it?

Yes. Winnings from online casinos, sportsbooks, and poker sites are taxable income and must be reported. If the site issued a Form W-2G or 1099, you definitely must report it. Even if it did not, you still owe tax on the winnings.