Federal Legislation Introduces Caps on Gambling Loss Deductions for 2026 Tax Year

The One Big Beautiful Bill Act, signed into law on July 4, 2025, establishes new restrictions on how U.S. taxpayers can deduct gambling losses beginning January 1, 2026, and these adjustments apply across both recreational and professional contexts while limiting the deductible amount to 90 percent of losses provided they do not surpass reported winnings.

Legislative Background and Enactment

Congress passed the measure earlier in 2025 after extended debates over revenue projections and tax code adjustments, yet the final version incorporated specific language targeting gambling-related itemized deductions that had previously allowed full offsets when losses matched or exceeded winnings in a given year, and this shift marks a departure from prior treatment under the Internal Revenue Code.

Observers tracking federal tax policy note that the act consolidates multiple provisions into a single statute, and its gambling section directly modifies reporting requirements for those who itemize on Schedule A as well as those who report activity on Schedule C for business purposes.

Specific Changes to Loss Deduction Rules

Under the updated framework, taxpayers may deduct no more than 90 percent of their gambling losses each year, and the total deduction remains further constrained by the requirement that it cannot exceed the amount of winnings reported in the same tax period, which means net losses could still generate taxable income even when overall results break even or show a deficit.

The limitation operates uniformly regardless of whether the individual participates occasionally or maintains gambling as a primary occupation, and data from prior years indicate that many filers previously claimed losses equal to winnings without creating additional tax liability under the old rules.

According to the Internal Revenue Bulletin 2026-19, guidance released in mid-2026 clarifies that these percentages and caps apply to all forms of gambling documented through W-2G forms or other records, while requiring detailed substantiation to support any claimed amounts.

Application to Recreational and Professional Filers

Recreational gamblers who itemize deductions on Schedule A encounter the 90 percent cap when listing gambling losses as miscellaneous itemized deductions, and this structure can result in situations where reported winnings create taxable income despite equal or greater losses incurred during the same calendar year.

Professionals reporting on Schedule C face the same percentage restriction applied against business expenses, which alters how net profit calculations incorporate loss offsets and may increase overall tax obligations for those whose activity volumes produce balanced win-loss records.

Take one taxpayer who records $50,000 in winnings alongside $50,000 in documented losses: the new rules permit a maximum deduction of $45,000, leaving $5,000 potentially subject to taxation even though actual net results equal zero, and this outcome applies whether the activity occurs at casinos, through online platforms, or via sportsbooks.

Developments Observed by August 2026

By August 2026 tax preparation software providers have updated their platforms to incorporate the revised limits, and accounting firms report increased inquiries from clients seeking clarification on record-keeping standards needed to substantiate claims under the 90 percent threshold.

Revenue estimators within federal agencies continue to monitor early filings from the first half of the year, while industry groups compile examples of affected returns to illustrate how the cap interacts with varying win rates across different gambling formats.

Conclusion

The One Big Beautiful Bill Act therefore establishes a consistent nationwide adjustment to gambling loss treatment that took effect at the start of 2026, and its provisions continue to shape filing practices as taxpayers and professionals adapt documentation procedures throughout the remainder of the year.