Yes, you owe federal income tax on gambling winnings of any size

The IRS treats gambling winnings as taxable income, whether you won $20 at a casino, $500 from a sports bet, or $50,000 from a lottery ticket. You cannot exclude winnings from your tax return just because they came from gambling rather than a job or business. The amount you owe depends on how much you won and your overall income for the year.

The person or organization that paid you the winnings may have already withheld taxes before handing over the money. If they did, that withholding counts toward what you owe when you file. If they did not withhold, or if the withholding was less than your actual tax liability, you will owe the difference when you file your return.

Key Takeaways

  • All gambling winnings are taxable income to the IRS, regardless of the amount or source.
  • Casinos, sportsbooks, and lottery operators must report winnings above certain thresholds to the IRS and may withhold taxes before paying you.
  • You can deduct gambling losses, but only up to the amount of your winnings, and only if you itemize deductions on your tax return.
  • Winnings from informal bets (poker with friends, office pools) are still taxable, though no one reports them to the IRS unless the amount is very large.
  • State income tax rules vary; some states tax gambling winnings at a higher rate than other income, and a few states do not tax them at all.

When the casino or sportsbook reports your winnings to the IRS

Casinos, sportsbooks, and lottery operators are required to file a Form W-2G with the IRS when you win above a certain threshold. The threshold depends on the type of gambling. For slot machines and keno, the threshold is $1,200. For table games, bingo, and poker tournaments, it is $5,000. For lottery tickets and pari-mutuel betting (horse racing, dog racing), it is $600. For sports betting, the threshold varies by state but is often $300 or $600.

When a business files a W-2G, they send a copy to you and a copy to the IRS. They also usually withhold federal income tax from your winnings before paying you out — typically 24 percent for most winnings, though the rate can be higher depending on your situation. That withholding is not the final amount you owe; it is a prepayment toward your tax bill. If your actual tax liability is higher, you owe more when you file. If it is lower, you may receive a refund.

You must report the W-2G on your tax return. The IRS already has a copy, so failing to report it will trigger a mismatch notice and potential penalties.

Winnings below the reporting threshold and informal bets

If you win below the threshold, the business does not have to file a W-2G or withhold taxes. That does not mean the winnings are tax-free. You still owe federal income tax on them. The difference is that no one reports the winnings to the IRS automatically, so you are responsible for reporting them yourself on your tax return.

The same rule applies to informal bets: poker games with friends, office Super Bowl pools, or bets with a coworker. These winnings are taxable income, even though no form is filed and no withholding occurs. You report them on your return. The IRS does not have independent knowledge of these bets unless the amounts are very large or someone involved reports them.

Many people do not report small informal winnings, and the IRS does not pursue every case. But technically, you are required to report all gambling income, regardless of size or source.

How to report gambling winnings on your tax return

Gambling winnings go on Form 1040, Schedule 1 (Additional Income and Adjustments to Income) under "Other income." If you received a W-2G, you will enter the amount shown in Box 1a of that form. If you won money that was not reported on a W-2G, you still report it on Schedule 1 under the same line.

You do not need a separate business form or schedule unless you are a professional gambler — someone who gambles full-time and treats it as a trade or business. Most people report winnings as "other income" on Schedule 1.

If you itemize deductions (rather than taking the standard deduction), you can deduct gambling losses on Schedule A under "Other miscellaneous deductions." The key limit: you can only deduct losses up to the amount of your winnings. If you won $5,000 and lost $7,000, you can deduct only $5,000. You cannot use gambling losses to reduce other income. You also need records — receipts, tickets, betting slips, or statements from the casino or sportsbook — to back up your loss deduction.

State income tax on gambling winnings

Most states that have an income tax also tax gambling winnings. Some states tax them at the same rate as other income. Others explore a special higher rate. For example, New York taxes lottery winnings at 8.82 percent on top of federal tax. Illinois taxes lottery winnings at 4.95 percent. Nevada, Tennessee, Florida, Texas, Washington, and Wyoming do not have a state income tax, so there is no state tax on gambling winnings in those states.

A few states have different rules for different types of gambling. Some tax casino winnings but not lottery winnings, or vice versa. If you won money in a state other than where you live, you may owe tax to both states, though you can usually claim a credit on your home state return for taxes paid to another state.

Check your state's tax authority website or speak with a tax professional if you won a large amount and are unsure whether state tax applies.

What happens if you do not report gambling winnings

If you received a W-2G and do not report it on your tax return, the IRS will notice the mismatch between what the casino reported and what you filed. You will receive a notice asking you to explain the discrepancy. If you do not respond or cannot justify the omission, the IRS will assess the tax you owe plus interest and penalties.

Penalties for underreporting income can range from 20 percent to 75 percent of the unpaid tax, depending on whether the IRS determines the error was negligence or fraud. Interest accrues from the original due date of the return until you pay.

For winnings that were not reported on a W-2G, the risk is lower because the IRS has no independent record. However, if you are audited for any reason, the IRS may ask about all sources of income, including gambling. If you cannot produce records showing you reported winnings, you could face the same penalties.

Deducting gambling losses

You can deduct gambling losses, but the rules are strict. First, you must itemize deductions on your tax return; you cannot claim gambling losses if you take the standard deduction. Second, you can deduct losses only up to the amount of your winnings. If you won $3,000 and lost $5,000, you can deduct only $3,000. Third, you need documentation: receipts, credit card statements, casino records, or betting confirmations that show the dates, amounts, and types of bets you made.

Many people keep a gambling diary or log for this reason — a straightforward record of each session with the date, location, amount wagered, and amount won or lost. This makes it easier to substantiate your deduction if you are audited.

The loss deduction does not reduce your other income. It only offsets your gambling winnings. So if you won $3,000 and lost $5,000, you report the $3,000 win as income and deduct $3,000 in losses, resulting in zero net gambling income for tax purposes. You cannot use the extra $2,000 in losses to reduce your wages or other income.

Professional gamblers and self-employment tax

If you gamble full-time and treat it as a trade or business — rather than a hobby or occasional activity — you may be classified as a professional gambler. Professional gamblers report their net winnings (winnings minus losses) on Schedule C (Profit or Loss from Business) and may owe self-employment tax in addition to income tax.

The IRS looks at several factors to determine whether you are a professional: whether you gamble regularly and systematically, whether you keep detailed records, whether you have a business plan, whether you have other income sources, and whether you have made a profit in most years. This classification is complex and varies case by case. If you gamble frequently and seriously, consult a tax professional to determine whether you should file as a professional gambler.

Frequently Asked Questions

Do I have to report a small win from a scratch-off lottery ticket?

Yes, technically all gambling winnings are taxable. However, scratch-off tickets under the reporting threshold (usually $600) are not reported to the IRS by the lottery. You are responsible for reporting the winnings on your tax return. Many people do not report small amounts, but you are required to do so.

What if I won money in another country?

Gambling winnings from outside the United States are still taxable to the IRS. You report them the same way as domestic winnings. If you paid taxes to another country on those winnings, you may be able to claim a foreign tax credit on your U.S. return. Consult a tax professional for guidance on your specific situation.

Can I deduct losses from an online sportsbook or casino?

Yes, losses from online gambling are deductible under the same rules as losses from physical casinos — up to the amount of your winnings, and only if you itemize deductions. You will need records from your account showing the bets you made and the results. Keep screenshots or statements from the sportsbook or casino as documentation.

If the casino withheld 24 percent tax, do I still owe more when I file?

Possibly. The 24 percent withholding is an estimate. Your actual tax liability depends on your total income for the year and your tax bracket. If your bracket is higher than 24 percent, you will owe more. If it is lower, you may receive a refund. You will know the exact amount when you file your return.

What if I won a large jackpot and the casino paid it out over time?

The casino will file a W-2G for the full amount in the year you won it, even if you receive the money in installments. You report the full winnings on your tax return for that year. The withholding will be based on the full amount as well. This can result in a large tax bill in the year you won, even though you are receiving the money over many years. Consult a tax professional before claiming a large jackpot to understand your obligations.