Most people who gamble know that winnings are taxable. Far fewer understand how the deduction side works. The rules around gambling loss deductions are specific, strict, and frequently misunderstood even by people who file their own taxes every year.
The IRS requires you to report every dollar of gambling income you receive. But the tax code also allows you to deduct gambling losses under certain conditions. Whether you visited a casino on the Las Vegas Strip, placed sports bets through a licensed mobile app, bought lottery tickets at a convenience store on Sunset Boulevard in Los Angeles, or played in a poker tournament in Commerce, California, the same federal rules apply.
This guide walks through every rule you need to know: what qualifies, how much you can deduct, what records to keep, how to report everything correctly, and what changed under the One Big Beautiful Bill Act of 2025. The rules shifted significantly. If you gambled in 2025 or beyond, you need to know the new limits.
A gambling loss is money you spent on a wager that did not pay off. It is the difference between what you bet and what you received back, when the amount you received was less than the amount you wagered.
Gambling losses can come from a wide range of activities. The IRS applies the same rules regardless of the type of gambling involved.
Activities that produce deductible gambling losses include:
What does not qualify as a deductible gambling loss includes losses from unlicensed or illegal wagering, fantasy sports contests that the IRS treats as skill-based contests rather than gambling, and speculative investments that the taxpayer characterizes as gambling but that the IRS does not recognize as such.
Yes, but only under specific conditions. The deduction is not automatic and it is not available to every taxpayer.
To deduct gambling losses on your federal return, three requirements must be met simultaneously. Miss any one of them and the deduction disappears.
The most important rule: you can only deduct gambling losses up to the amount of gambling winnings you report in the same tax year. This is the wagering loss limitation from Internal Revenue Code Section 165(d).
If you won $8,000 at a casino and lost $11,000 over the same year, your deductible gambling losses are capped at $8,000. The extra $3,000 in losses provides no tax benefit. You cannot carry those losses forward to a future year. They disappear.
If you only lost money and won nothing, you have zero gambling winnings and therefore zero gambling loss deduction. No winnings means no deduction, regardless of how much you lost.
Gambling losses are claimed as an itemized deduction on Schedule A of Form 1040. If you take the standard deduction, you cannot claim gambling losses at all.
For 2025, the standard deduction is $15,000 for single filers and $30,000 for married couples filing jointly. Only taxpayers whose total itemized deductions exceed these amounts benefit from itemizing. For most people with modest gambling activity, the standard deduction is larger and gambling losses produce no tax benefit.
However, taxpayers who already itemize because of mortgage interest, significant property taxes, charitable contributions, or other deductions can add deductible gambling losses to their existing itemized deductions at no additional cost.
This is the new rule that affects taxpayers starting in 2026. The One Big Beautiful Bill Act, signed in 2025, changed the gambling loss deduction limit. For tax years beginning after December 31, 2025, taxpayers can only deduct 90 percent of their gambling losses up to 90 percent of their gambling winnings.
Under the old rule, a taxpayer with $10,000 in winnings and $10,000 in losses could deduct $10,000. Under the new rule effective in 2026, the same taxpayer can only deduct $9,000, which is 90 percent of $10,000 in winnings. The remaining $1,000 in losses is permanently non-deductible.
This new 90 percent cap applies regardless of whether the taxpayer is a casual gambler or a professional gambler. It is a significant change that increases the effective federal tax burden on gambling activity beginning in 2026.
For tax years 2025 and earlier, you can deduct gambling losses up to the full amount of gambling winnings you reported. For tax years 2026 and later, you can deduct gambling losses up to 90 percent of gambling winnings.
Here is a practical table showing how the calculation works under both rule sets:
Scenario 1: You won $5,000 and lost $3,000. Your deductible losses for 2025 are $3,000 (100 percent). For 2026, your deductible losses are $3,000 (since 90 percent of $5,000 is $4,500, and your actual losses of $3,000 are still below this ceiling).
Scenario 2: You won $5,000 and lost $6,000. Your deductible losses for 2025 are $5,000 (capped at winnings). For 2026, your deductible losses are $4,500 (90 percent of $5,000 in winnings). The full $6,000 in losses produces only $4,500 in deductible losses.
Scenario 3: You won $20,000 and lost $20,000. For 2025, you deduct $20,000. For 2026, you can only deduct $18,000. The effective tax cost of the 2026 rule is $2,000 in non-deductible losses at your marginal rate.
This is the part that catches many gamblers off guard. Gambling winnings are gross income. You must report them in full on your federal tax return, on Line 8 of Schedule 1 as Other Income.
You cannot net your winnings against your losses and only report the net. The IRS requires you to report gross winnings as income and then deduct losses separately as an itemized deduction. These are two separate entries on your return.
This asymmetry has real consequences. If you won $15,000 and lost $15,000, your gambling for the year was a wash. But on your tax return, you report $15,000 of income. If you itemize, you deduct $15,000 in losses, arriving at a net of zero. But if you take the standard deduction, you report $15,000 in income and claim no deduction at all. You pay tax on winnings you did not actually keep.
This is why the decision to itemize or take the standard deduction is so consequential for gamblers.
When your winnings reach certain thresholds, the casino or gambling establishment is required to give you a Form W-2G and send a copy to the IRS. This form reports your gross winnings and any federal income tax withheld.
The W-2G thresholds that trigger mandatory reporting are:
Critical point: you must report all gambling winnings on your federal return, not just those reported on a W-2G. If you won $400 in a poker game at a tribal casino in San Manuel near Highland, California, or $750 at a poker room on the Commerce Casino floor in Commerce, California, you still report those winnings even without a W-2G. The absence of a W-2G does not make the income non-taxable.
Casinos and other gambling establishments withhold federal income tax at a flat 24 percent rate on certain large winnings. Withholding is required when winnings exceed $5,000 from sweepstakes, lotteries, wagering pools, and certain poker tournaments.
If taxes were withheld, the W-2G will show the amount withheld in Box 4. This amount is a prepayment of your federal tax and is applied against your total tax liability when you file your return. If too much was withheld relative to your total liability, you receive a refund of the excess.
Even when no withholding applies, you may need to make quarterly estimated tax payments if your gambling winnings are significant. Underpayment of tax throughout the year can result in penalties from the IRS under IRC Section 6654.
Yes. Sports betting losses qualify for the same gambling loss deduction as any other form of gambling. The IRS does not distinguish between casino losses, lottery losses, and sports betting losses. All are treated identically under Internal Revenue Code Section 165(d).
As sports betting has expanded rapidly across the United States following the 2018 Supreme Court decision in Murphy v. National Collegiate Athletic Association that struck down the federal prohibition, the tax compliance picture has become more complex for many Americans.
Legal sports betting is now available in more than 30 states. Licensed sportsbook apps make betting accessible from anywhere. Many bettors place hundreds or thousands of individual wagers over the course of a year, making recordkeeping both more important and more complex.
Your sportsbook app should provide you with a year-end account summary showing total wagers placed, total winnings, and net results for the year. Download this statement and save it. The IRS may ask for it if your return is examined.
For sports bettors, the W-2G threshold is $600 when winnings are at least 300 times the wager amount. A $2 bet that wins $600 triggers W-2G reporting. A $100 bet that wins $300 does not, even though the gross win is larger, because $300 is only 3 times the wager.
The burden of proof is entirely on the taxpayer. The IRS does not accept a general claim that you lost more than you won without documentation. If your return is audited, you must be able to prove both your winnings and your losses with credible records.
IRS Publication 529 specifically addresses gambling recordkeeping. The IRS recommends maintaining a gambling diary or log that contains the following information for each gambling session:
For casino players, your players card and account history from the casino are excellent supporting documents. Casinos track your play electronically when you use a rewards card. Many casinos provide annual win-loss statements upon request. Request this statement from every casino property where you played during the year. In Southern California, properties like the Pechanga Resort Casino in Temecula, the Hollywood Park Casino in Inglewood, and the Bicycle Casino in Bell Gardens all provide these statements to card members.
In addition to your gambling diary and casino win-loss statements, the following documents strengthen your records:
Keep all gambling records for at least three years from the date you file the return on which you claimed the deduction. If the IRS suspects you substantially understated income, the statute of limitations extends to six years. For fraud allegations, there is no statute of limitations.
The One Big Beautiful Bill Act of 2025 did not change what qualifies as a gambling loss. The types of activities that produce deductible losses remain the same as before: casino games, lottery, sports betting, horse racing, and similar wagering activities.
What changed is the percentage of those losses that can offset winnings for deduction purposes. Beginning in tax year 2026, the deductible amount is capped at 90 percent of gambling winnings rather than 100 percent.
The OBBBA also clarified that losses must still be tracked and documented at the session level. The IRS previously established in court decisions and guidance that gambling income and losses are measured on a per-session basis rather than on a per-wager basis. Sessions are defined as a single continuous period at a single gambling establishment or activity.
For casino players, a session begins when you sit down and ends when you cash out at that location. For sports bettors, the session concept is less clear, and current IRS guidance suggests using the settlement date of each wager as the reporting event.
The reporting process involves multiple forms. Here is how each piece fits together.
All gambling winnings go on Schedule 1, Part I, Line 8b as Other Income. This is where you list the gross total of all gambling winnings for the year, including amounts reported on W-2G forms and amounts not reported on W-2G forms.
The total from Schedule 1 flows to Form 1040 Line 8. Your winnings increase your adjusted gross income before any deduction is applied.
If you are itemizing deductions, gambling losses go on Schedule A, Line 16, under Other Itemized Deductions. The label on Schedule A is Gambling losses (to the extent of gambling winnings).
Enter the lesser of your actual gambling losses or your gambling winnings for 2025 and earlier years. For 2026 and later, enter the lesser of your actual gambling losses or 90 percent of your gambling winnings.
Schedule A totals flow to Form 1040, and the itemized deduction amount reduces your adjusted gross income to arrive at taxable income. The gambling loss deduction reduces your taxable income only to the extent it contributes to your total itemized deductions exceeding the standard deduction.
Federal tax withheld from gambling winnings shown in Box 4 of Form W-2G is entered on Form 1040, Line 25c as Federal tax withheld from Form W-2G. This amount is a credit against your total tax liability for the year.
Gambling losses are one of the IRS’s more frequently examined deduction categories. Returns showing large gambling winnings and offsetting losses sometimes receive additional scrutiny.
If the IRS questions your gambling loss deduction, they will typically request documentation in the form of an audit notice or information document request. The most common requests include your gambling diary or log, casino win-loss statements, W-2G forms, and bank or credit card records showing cash withdrawals at gambling locations.
Without documentation, the IRS can disallow the entire gambling loss deduction. Courts have consistently upheld this position. In the absence of a contemporaneous log and supporting documents, even a taxpayer who genuinely lost money cannot prove the losses to the IRS’s standard.
The Tax Court has allowed casino win-loss statements as supporting evidence in some cases, but has also declined to accept them as sole proof in others. The most defensible position is a contemporaneous diary backed by casino statements, bank records, and receipts.
If you receive an IRS examination notice related to gambling income or losses, engage a tax professional immediately. Do not respond to an IRS examination on your own if the amounts involved are significant. A CPA or tax attorney familiar with IRS examination procedures can protect your position and help you respond properly.
Beyond the winnings ceiling and the new 90 percent cap, several other limitations affect how the gambling loss deduction works in practice.
If your gambling losses in a given year exceed your gambling winnings, you cannot carry the excess forward to offset winnings in a future year. IRC Section 165(d) is unambiguous on this point. The excess loss is gone permanently.
This is a stark contrast to capital loss carryforwards, which allow investors to carry unused investment losses forward indefinitely to offset future capital gains. No such provision exists for gambling losses.
You cannot use gambling losses to offset other types of income such as wages, interest, dividends, capital gains, or business income. Gambling losses are a specific category that offsets only gambling winnings.
The asymmetry here is significant. Your gambling winnings increase your total income and affect your tax bracket. Your gambling losses only reduce taxable income if you itemize and only to the extent of your winnings.
Most casual gamblers who do not have significant mortgage interest, property taxes, or charitable contributions will take the standard deduction. For these taxpayers, gambling losses provide zero tax benefit even when losses genuinely exceeded winnings during the year.
This means a casual gambler who won $3,000 and lost $3,000 and takes the standard deduction will report $3,000 in income and pay federal income tax on it. The losses are unclaimed because the standard deduction already exceeds any itemized amount.
The IRS distinguishes between casual gamblers and professional gamblers. A professional gambler is someone who gambles as their primary trade or business, pursuing gambling with regularity, continuity, and a profit motive.
Professional gamblers report gambling income and losses on Schedule C, not on Schedule A. This is a significant difference because Schedule C losses can offset other types of income and are not limited to the amount of gambling winnings.
However, professional gambler status comes with consequences. Professional gamblers pay self-employment tax, currently 15.3 percent, on their net gambling income. This is on top of regular income tax. A casual gambler does not pay self-employment tax on gambling winnings.
The IRS and courts apply a nine-factor test from Treasury Regulation 1.183-2 to determine whether an activity qualifies as a trade or business. For gambling, the Tax Court has examined cases carefully and denied professional status to taxpayers who could not demonstrate consistent profitability expectations and business-like operations.
Most recreational gamblers, even frequent and serious ones, do not qualify as professional gamblers. Claiming professional status incorrectly to deduct excess losses is an audit risk. Consult a tax professional before claiming professional gambler status.
Note: The OBBBA 90 percent limitation applies to professional gamblers as well as casual gamblers for tax years beginning after December 31, 2025.
Federal rules govern the federal return. Each state applies its own rules to gambling income and losses. The treatment varies significantly from state to state.
California conforms to federal law regarding gambling income. Gambling winnings are taxable as ordinary income in California at the state’s income tax rates.
For gambling loss deductions, California also conforms to the federal itemized deduction approach. California taxpayers who itemize on their California return can deduct gambling losses up to gambling winnings, subject to the same limitations as the federal deduction.
California does not currently conform to the OBBBA 90 percent cap on gambling loss deductions. This means California may still allow 100 percent of losses up to winnings on the state return even after the federal cap takes effect. California taxpayers should confirm current state law with the Franchise Tax Board at ftb.ca.gov or with a California tax professional, as conformity decisions are made on a rolling basis by the California legislature.
The California standard deduction is much lower than the federal standard deduction, at $5,202 for single filers and $10,404 for married couples filing jointly. This means more California taxpayers itemize on their state return than on their federal return. California residents who take the federal standard deduction might still itemize on their California return if their California itemized deductions exceed these lower California thresholds.
Some states do not allow a deduction for gambling losses at all, even for taxpayers who itemize. Connecticut, Massachusetts, and several others tax gambling winnings as ordinary income without permitting any loss offset on the state return.
For taxpayers in these states, gambling represents a guaranteed tax cost even in break-even years. A Connecticut taxpayer who won $5,000 and lost $5,000 pays Connecticut income tax on $5,000 with no offset.
Check your specific state’s rules through your state department of revenue website, or consult a local tax professional who can advise on both federal and state treatment together.
Yes. The rules for nonresident aliens are substantially different from those that apply to U.S. citizens and resident aliens.
Nonresident aliens who win at U.S. casinos are generally subject to 30 percent withholding on gambling winnings from U.S. sources, unless a tax treaty between the U.S. and their home country provides a reduced rate or exemption. Many countries have tax treaties with the United States that exempt gambling winnings from U.S. withholding.
Nonresident aliens generally cannot deduct gambling losses against gambling winnings. The loss deduction under IRC Section 165(d) applies to taxpayers who are subject to U.S. income tax on their worldwide income. Nonresident aliens are only taxed on U.S.-source income and are subject to the fixed withholding regime rather than the graduated rate structure that makes the deduction meaningful.
Nonresident aliens who believe they overpaid withholding on gambling winnings may be able to file Form 1040-NR to claim a refund if a treaty exemption applies. This is a specialized area that requires a tax professional familiar with U.S. international tax rules and treaty provisions.
This guide focuses on tax treatment of gambling activity. But it would be incomplete without acknowledging that gambling disorder is a recognized condition affecting millions of Americans, including many who are unaware their behavior has crossed from recreation into a clinical problem.
Common signs of a gambling disorder, as defined by the American Psychiatric Association in the DSM-5, include an inability to control the amount wagered, chasing losses with larger bets, lying to family members about gambling activity, jeopardizing employment or relationships because of gambling, and relying on others to provide money to relieve financial situations caused by gambling.
If these patterns describe you or someone close to you, the National Council on Problem Gambling operates a 24-hour helpline at 1-800-522-4700. Resources are also available at ncpgambling.org. In California, Gamblers Anonymous holds regular meetings throughout Los Angeles County, including meetings in Hollywood, Pasadena, Long Beach, and the San Fernando Valley. Meeting schedules are available at gamblersanonymous.org.
Gambling income and the associated loss deductions interact with other elements of your tax return in ways that can create unexpected consequences.
Gambling winnings increase your adjusted gross income. AGI is the figure used to determine eligibility for many income-tested credits and deductions. Higher AGI can:
The gambling loss deduction on Schedule A does not reduce AGI. It reduces taxable income, which is calculated after AGI. This means the full impact of gambling winnings on AGI remains even if you fully deduct your losses through itemizing.
For taxpayers who regularly gamble and regularly itemize, some year-end tax planning is possible. If you have significant gambling winnings late in the year and offsetting losses available, ensuring your records are complete before December 31 allows you to claim the full deduction on that year’s return.
Conversely, if you had a winning year and anticipate significant gambling activity in the following year, understanding the interplay between your current year winnings and future year losses matters. Because losses cannot be carried forward, the only way to benefit from future losses is to have future winnings to offset them.
Gambling loss deductions are real, available, and legitimate. But they are more restricted than many taxpayers realize.
You must have gambling winnings to offset. You must itemize. You must keep detailed records. Beginning in 2026, you can only deduct 90 percent of losses up to 90 percent of winnings. And the losses do nothing to reduce your adjusted gross income, which means the ancillary effects of gambling winnings on other parts of your tax return remain.
The practical reality for most casual gamblers is that the standard deduction makes the gambling loss deduction irrelevant. For higher-income taxpayers who already itemize, the deduction provides real value when records are maintained.
If you had significant gambling activity during the year, review your records now rather than scrambling at tax time. Gather your W-2G forms, download your sportsbook statements, request casino win-loss letters, and organize your diary or log. The IRS accepts properly documented gambling losses. It rejects undocumented claims consistently.
For questions about your specific situation, IRS Publication 529 at irs.gov covers gambling losses in detail. IRS Topic 419 on the IRS website provides additional guidance. A licensed CPA or enrolled agent can help you navigate the reporting requirements and ensure your return is accurate and defensible.
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