Gambling Losses and Taxes in 2026: The New 90% Deduction Cap, Explained
Updated 2026-07-18 · 7 min read
Starting with tax year 2026, federal law caps the deduction for gambling losses at 90% of those losses. Under the One Big Beautiful Bill Act signed in July 2025, a bettor who wins $100,000 and loses $100,000 — a break-even year — can now deduct only $90,000, leaving $10,000 of taxable "phantom" income from gambling that produced no actual profit.
Repeal bills have been introduced and have bipartisan support, but as of mid-2026 none has passed, so the 90% cap is the law for this tax year. That makes two things newly important for anyone who gambles at meaningful volume: understanding how the math now works, and keeping records complete enough to substantiate every number on the return. This article is general information, not tax advice — the specifics of your situation belong with a tax professional.
The basics that didn't change
- All gambling winnings are taxable income and must be reported, whether or not the operator sends you a tax form.
- Operators issue Form W-2G for certain reportable wins (thresholds vary by game type) and Form 1099 for qualifying daily-fantasy profits — but the absence of a form doesn't make a win unreportable.
- Losses are deductible only if you itemize deductions, and only up to the amount of your winnings — losses have never been able to produce a net gambling deduction against other income for casual gamblers.
- Winnings and losses are reported separately — you generally cannot just net them and report the difference.
What changed for 2026: the 90% cap
The One Big Beautiful Bill Act amended the loss-deduction rule: beginning with tax year 2026, only 90% of gambling losses count toward the deduction (still limited to winnings). The practical effect lands hardest on high-volume players:
- Break-even is no longer tax-neutral — win $50,000, lose $50,000, and $5,000 of income is taxable anyway.
- Volume, not profit, drives the exposure — a sports bettor churning large amounts at thin margins can owe tax on phantom income far exceeding any real profit.
- Even modest losing years can be taxed — the cap bites whenever 90% of losses is less than winnings. Win $100,000 and lose $105,000 — a real $5,000 loss — and only $94,500 is deductible, leaving $5,500 taxable.
- Repeal efforts (the FAIR BET Act, the FULL HOUSE Act) had not passed as of mid-2026 — plan around the law as written, not the law as proposed.
What the IRS actually expects as proof
The substantiation standard did not get easier. IRS guidance expects a contemporaneous record of gambling activity — dates, games or wager types, locations or platforms, and amounts won and lost — corroborated by supporting documents:
- Bank and card statements showing deposits to and withdrawals from gambling platforms.
- Operator records: win/loss statements, player-activity reports, and tax forms — useful corroboration, though courts have treated casino win/loss statements alone as insufficient because they're estimates.
- Tickets, payment records, and receipts where they exist.
Why bank records are the backbone
Most people who reach tax season with a gambling problem to document have the same gap: activity scattered across multiple platforms, no contemporaneous log, and a stack of operator statements that don't agree with each other. The one complete, third-party, timestamped record that exists by default is the bank record — every deposit to every operator, every withdrawal back, every processor in between.
VigCheck turns that record into documentation: connect your bank or upload statements, and it identifies gambling transactions across hundreds of operators, reconciles deposits against withdrawals per platform, and produces a transaction-level export and analysis you and your tax professional can actually work from. Operator win/loss statements can be uploaded alongside for cross-checking.
Frequently asked questions
Can I owe taxes on gambling if I lost money overall in 2026?
Yes. Winnings are taxable in full, while only 90% of losses (up to winnings) are deductible for tax year 2026 — so both break-even and losing years can produce taxable income. And if you don't itemize, losses aren't deductible at all.
Is a win/loss statement from the casino or sportsbook enough documentation?
Generally no. Operator statements are estimates and say so in their disclaimers; courts have declined to accept them as sole substantiation. The expected package is a contemporaneous log corroborated by records like bank statements, with operator documents as support.
Does the 90% cap apply to professional gamblers too?
The OBBBA change reaches professional gamblers' wagering losses and expenses as well, though professionals' returns work differently in other respects. If you file as a professional, this is squarely a question for your tax advisor.
Might the 90% cap be repealed?
Bills to restore the full deduction have been introduced with bipartisan support, but none had passed as of mid-2026. Until one does, the cap is current law — build your records assuming it applies.