A taxpayer who wins $100,000 at a casino in 2026 and loses exactly $100,000 over the same calendar year will no longer balance their federal tax obligations to zero. Under a federal statutory change taking effect on January 1, 2026, wagering losses can no longer wipe out matching wagering income dollar for dollar on federal income tax filings.
The mechanism behind this shift is direct. The Internal Revenue Code now limits the deductible portion of gambling losses to 90 percent of qualified losses, while retaining an absolute cap set by total gambling winnings.
Because gross winnings must still be entered directly into taxable income, an itemizing bettor with equal wins and losses finishes the year with phantom taxable income. They walked away from the tables with zero net economic profit. Yet the Internal Revenue Service will treat them as having $10,000 in taxable income.
The Statutory Revision to Section 165(d)
The revision arrived through the One Big Beautiful Bill Act, which amended Section 165(d) of the Internal Revenue Code. For decades prior to the 2026 tax year, the rules governing casual wagering deductions remained constant: losses were fully deductible up to the total value of winnings reported in that same tax year. If you collected $10,000 in payouts and lost $10,000 across twelve months, your allowed itemized deduction stood at $10,000.
The amended statutory text alters that calculation entirely. The revised provision dictates that allowable deductions for losses from wagering transactions "shall be equal to 90 percent of the amount of such losses."
The statute immediately pairs that calculation with a second condition: losses "shall be allowed only to the extent of the gains from such transactions."
Tax summaries published by TurboTax and legal analyses from the Ave Maria School of Law confirm the operational formula starting in tax year 2026. A filer's allowable deduction equals the lesser of two distinct figures: 90 percent of actual wagering losses, or 100 percent of wagering gains. The reduction does not cancel the deduction altogether, but it creates a permanent 10 percent gap between what was lost and what can be written off against matching wins.
Schedule A Reporting and the Two-Tier Limitation
To see how the numbers interact on a tax return, filers must understand how the IRS handles gambling transactions. Taxpayers cannot simply net their payouts against their losses at the end of the year and report the difference on page one of Form 1040.
As tax preparation firm Jackson Hewitt notes, IRS reporting rules require every dollar of gambling winnings to be included in gross income. Losses cannot be subtracted at that stage. Instead, losses must be claimed separately as an itemized deduction on Schedule A.
This two-tier structure creates two independent ceilings on every claim:
- The 90 percent loss haircut applied to qualified out-of-pocket losses.
- The gross winnings ceiling, which prevents total deductions from exceeding total reported wagering income.
Consider a player who experiences an unprofitable run. In an example detailed by TurboTax, an individual wins $2,000 on sports wagers during 2026 but incurs $5,000 in documented losses over the year. Applying the initial 90 percent calculation to the $5,000 loss yields $4,500. However, the filer cannot claim a $4,500 deduction on Schedule A. The gross winnings cap restricts the total deduction to $2,000, perfectly matching the reported income. The remaining $2,500 of the original loss is lost for tax purposes. It cannot be carried forward to future years or used to offset other income categories.
The $100,000 Break-Even Balance Sheet
The friction in the 2026 rule emerges most clearly when a gambler manages to break even. Published analyses by accounting firm Wipfli and law firm Womble Bond Dickinson outline the arithmetic for an itemizer who records $100,000 in gross payouts alongside $100,000 in wagering losses.
On the income side, the taxpayer must report the entire $100,000 as taxable income on their return.
On Schedule A, the taxpayer calculates their deduction. Ninety percent of their $100,000 loss equals $90,000. Because $90,000 is lower than the $100,000 in winnings, the allowable deduction is capped at $90,000.
The taxpayer subtracts $90,000 from $100,000. The result is $10,000 of taxable income remaining on the books.
The taxpayer did not gain a single dollar of actual wealth. Their bank account holds the same cash balance on December 31 as it did on January 1. Yet their adjusted taxable income increases by $10,000, exposing that sum to federal income tax rates based on the filer's marginal tax bracket.
A taxpayer in the 24 percent marginal bracket would owe an extra $2,400 in federal tax on a year of zero net gambling returns. A filer in the 37 percent bracket would face a $3,700 tax liability on the identical zero-profit outcome.
Impact on Itemizers Versus Professional Filers
The real-world reach of this rule depends heavily on how a taxpayer files. As tax analysis published by Kiplinger points out, the vast majority of casual players take the standard deduction rather than itemizing on Schedule A.
For non-itemizers, gambling losses have always produced zero tax benefit. A non-itemizer who wins $5,000 and loses $5,000 has always been required to report the $5,000 win as income without deducting a single cent of the loss. For this segment of the public, the 2026 change alters nothing: their tax bill remains governed by their choice to take the standard deduction.
The statutory revision directly targets casual gamblers who already itemize their deductions. These filers typically carry itemized deductions, such as state taxes, mortgage interest, or charitable gifts, that exceed the standard deduction threshold. When these filers add wagering activity to Schedule A, the new 90 percent cap applies immediately.
Professional gamblers occupy a separate category in federal tax administration. Published guidance from tax preparation services indicates that professional filers report gambling activity under business provisions rather than as recreational deductions on Schedule A. The exact application of the new statute across different filing classifications continues to rely on administrative guidance, but for everyday itemizers, the formula beginning in 2026 is fixed: full income on the front end, only nine-tenths of matching losses on the back end.
Sources
Every figure and date above is taken from one of these documents. Where a rule belongs to another country, the text says so.