Gambling winnings are taxable income, and the IRS requires you to report them

The IRS treats gambling winnings as ordinary income. You must report all winnings — from casinos, lotteries, sports betting, horse racing, poker tournaments, and online gambling — on your federal tax return. There is no legal way to avoid paying tax on money you win. What you can do is understand what counts as income, what losses you can deduct, and how to report it correctly so you do not pay more than you owe.

The amount you report depends on the type of gambling and the amount won. Casinos and lotteries issue a Form W-2G when you win over a certain threshold (usually $600 for most gambling, $1,200 for slot machines, $1,500 for bingo or keno). If you receive a W-2G, the IRS already has a copy, so you must report at least that amount. Winnings below the W-2G threshold still count as taxable income, even if no form is issued.

Key Takeaways

  • All gambling winnings are taxable income and must be reported to the IRS, regardless of the amount.
  • Gambling losses can only be deducted if you itemize deductions on your tax return, and only up to the amount of your winnings.
  • If a casino or lottery issues you a Form W-2G, the IRS has already received it, so you must report at least that amount.
  • Keeping detailed records of all gambling activity — wins and losses — is the only way to support a loss deduction if you are audited.
  • Professional gamblers may be able to deduct business expenses, but the IRS has strict rules about what qualifies as a business versus a hobby.

How gambling winnings are reported on your tax return

Winnings go on Form 1040, Schedule 1 (Other Income) as "gambling winnings." If you received a W-2G, you will also receive a copy for your records. Report the full amount shown on the W-2G, even if taxes were already withheld from the payout.

The IRS withholds federal income tax on certain winnings at the point of payout. Casinos typically withhold 24 percent on winnings over $5,000 (or sometimes lower amounts, depending on the type of gambling). Lottery winnings may have withholding of 24 to 37 percent depending on the state and the amount. This withholding is not the same as your actual tax liability — it is a prepayment. When you file your return, you will either owe more or receive a refund depending on your total income and tax bracket.

If you won money but did not receive a W-2G because the amount was below the threshold, you still report it on Schedule 1. The IRS cross-checks W-2G forms against filed returns, so reporting only the winnings you received forms for leaves a gap that can trigger an audit.

Gambling losses and how to deduct them

You can deduct gambling losses, but only if you itemize deductions on your tax return instead of taking the standard deduction. Most people take the standard deduction because it is larger than their itemized deductions would be. If you are one of the few who itemizes, gambling losses go on Schedule A (Itemized Deductions) under "Other Miscellaneous Deductions."

The critical rule: you can only deduct losses up to the amount of your winnings. If you won $5,000 and lost $8,000, you can deduct only $5,000 in losses. You cannot use gambling losses to offset other income or create a net loss on your return. This rule applies even if you gamble frequently or consider it a business.

To deduct losses, you must have records. The IRS requires documentation of when you gambled, where, how much you won, and how much you lost. Acceptable records include casino receipts, betting slips, credit card statements, bank statements, and a personal diary or log. If you are audited and cannot produce records, the IRS will disallow the deduction entirely. Many people win money but cannot deduct losses because they did not keep receipts or records.

Professional gamblers and business deductions

If the IRS determines you are a professional gambler rather than a hobbyist, the rules change. Professional gamblers can deduct all gambling losses against all gambling winnings (not just up to the amount of winnings), and they can deduct business expenses like travel, equipment, and professional fees.

The IRS does not have a single test for professional status, but it looks at factors including: whether you gamble regularly and with intent to make a profit, whether you keep detailed records and business books, whether you have informed in the games you play, and whether gambling is your primary source of income. Casual gamblers or people who gamble for entertainment do not may have access to. If you claim professional status and the IRS disagrees, you face penalties and back taxes plus interest.

If you think you might may have access to as a professional gambler, consult a tax professional before filing. The burden of proof is on you to show the IRS that gambling is a business, not a hobby.

State taxes on gambling winnings

Federal tax is only part of the picture. Most states also tax gambling winnings. Some states withhold state income tax at the time of payout (often 2 to 8 percent, depending on the state). Others do not withhold but require you to report winnings on your state return.

A few states — Nevada, Montana, South Dakota, and Washington — do not have a state income tax, so there is no state tax on gambling winnings. Other states tax winnings at their ordinary income tax rate. Some states have special rates for lottery winnings or casino winnings that differ from regular income tax rates. If you gamble in a state where you do not live, you may owe tax to both your home state and the state where you gambled, though some states offer credits to avoid double taxation.

Check your state's tax authority website or speak with a tax professional to understand your state's rules. Winnings from online gambling are typically taxed by your state of residence, not the state where the online platform is based.

What to do if you did not report gambling winnings

If you won money in a previous year and did not report it, you can file an amended return. Use Form 1040-X (Amended U.S. Individual Income Tax Return) for the year in question. You have three years from the original due date to amend without facing additional penalties for late filing, though you will owe back taxes plus interest.

If the IRS contacts you about unreported gambling winnings (often because a W-2G was filed), do not ignore it. Respond promptly and file an amended return if needed. The longer you wait, the more interest accrues. If you received a W-2G and did not report it, the IRS already knows about the income, and an audit is more likely.

If you are facing a large tax bill from gambling winnings and cannot pay it in full, the IRS offers payment plans. You can request an installment agreement on Form 9465 or set up a payment plan online through the IRS website. Interest and penalties continue to accrue, but a payment plan prevents wage garnishment or bank levies.

Keeping records to support your position

Documentation is your only defense in an audit. Keep every receipt, ticket stub, credit card statement, and bank record related to gambling. If you gamble regularly, maintain a log with the date, location, type of gambling, amount wagered, and amount won or lost. Many people use a straightforward spreadsheet or notebook.

If you claim losses, organize your records by year and by location (casino, online platform, racetrack). If you claim professional status, keep records that show your business structure: business licenses, business bank accounts, books and records, and evidence of time spent on gambling-related activities. The more organized your records, the easier it is to defend your position if questioned.

Frequently Asked Questions

Do I have to report small gambling winnings if I did not get a W-2G?

Yes. All gambling winnings are taxable income, regardless of whether a W-2G was issued. The W-2G threshold varies by type of gambling, but winnings below that threshold still must be reported on your tax return. The IRS may cross-check your return against W-2G forms filed by casinos, so reporting only the winnings you received forms for can trigger an audit.

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

No. Gambling losses can only be deducted if you itemize deductions on Schedule A. Most taxpayers take the standard deduction because it is larger. If your itemized deductions (including gambling losses) exceed the standard deduction, then itemizing makes sense, but you would need other deductions like mortgage interest or charitable donations to make it worthwhile.

What if I won money online from a site outside the United States?

Winnings from any source are taxable to the IRS, including online gambling sites based outside the U.S. You must report the winnings on your federal return. Your state may also tax the winnings depending on your state of residence. Online platforms do not always issue W-2G forms, so you are responsible for tracking and reporting the income yourself.

Can I claim gambling losses from years ago?

You can amend a return up to three years after the original due date. If you want to claim losses from a prior year, file Form 1040-X for that year. You will owe back taxes plus interest on any additional tax owed, but you will not face penalties for late filing if you file within the three-year window.

What happens if I get audited for gambling winnings?

The IRS will ask you to provide documentation of your winnings and losses. Bring receipts, W-2G forms, bank statements, and any records you kept. If you cannot produce records, the IRS will disallow any loss deductions you claimed. If you reported winnings but the IRS finds unreported winnings from W-2G forms you did not include, you will owe back taxes plus interest and possibly penalties for negligence.