How to Calculate Your 2026 Gambling Loss Deduction

For 2026, take 90% of eligible gambling losses first, then cap the deduction at your annual gambling winnings: D = min(0.9 × L, W). This is not a 10% tax rate, and it is not 90% of whichever is smaller—winnings or losses.

The rule applies to tax years beginning after 2025. A 2025 return filed in 2026 still uses the old limit. A 2026 return, normally filed in 2027, uses the 90% rule.

This guide covers US federal taxes for casual gamblers who are US tax residents, have documented eligible gambling losses, and can claim itemized deductions. Citizenship alone does not determine tax residency or tax treatment. State taxes and nonresident situations require separate analysis.

What is the rule, and which tax year does it cover?

For 2025, the loss deduction is capped at winnings. For 2026, you first multiply eligible gambling losses by 90%, then apply the winnings cap.

Here, W means annual gambling winnings and L means annual gambling losses already properly determined for tax purposes. Neither figure is simply your deposits, withdrawals, bankroll, or payouts that include returned stakes.

Public Law 119-21, §70114 amended 26 USC §165(d). IRS Publication 505 for 2026 confirms the calculation: 90% of losses, but no more than winnings.

Page 2 excerpt from IRS Publication 505 for 2026 explaining the 90% gambling loss deduction and winnings cap

Official IRS Publication 505 for 2026. The formula sets the loss deduction limit, not your final tax bill.

Below, W − D is called the taxable gambling balance. It isolates the effect of §165(d); it is not your adjusted gross income (AGI), total taxable income, or final tax.

Why can you have phantom income even after losing money?

Your allowed deduction can be smaller than your winnings even when your losses exceed those winnings. This is often called phantom income: you have no economic profit, but the loss deduction does not fully offset the winnings.

All table amounts are US dollars. Economic net is W − L; the 2026 taxable gambling balance is W − D. These exact-dollar examples assume tax-defined totals, documented eligible losses, itemizing, and no other limitations. No rounding is needed for these rows.

With $100,000 in winnings and $110,000 in losses, the correct calculation is min(0.9 × 110000, 100000) = 99000. You lost $10,000 economically, but have a $1,000 taxable gambling balance.

Do not cap losses at winnings before multiplying by 90%. The incorrect formula 0.9 × min(W, L) produces a $90,000 deduction here. Simply taking 90% of winnings is also wrong.

The counterexample is $100,000 in winnings and $120,000 in losses. Multiplying losses by 90% gives $108,000, which the winnings cap reduces to a $100,000 deduction. The balance is zero—but that does not establish that you owe no other tax or have no AGI consequences.

The zero-balance condition is L ≥ W / 0.9, approximately 111.11% of winnings. For $100,000 in winnings, the exact threshold is $111,111.111111…; if recording amounts to cents, rounding the threshold upward to $111,111.12 is sufficient. This explains the formula, not a reason to gamble more.

What does the 24% example actually show?

It shows hypothetical tax on the taxable gambling balance only, assuming that entire balance falls within a constant 24% tax bracket. With $10,000 in winnings and $10,000 in losses, the balance is $1,000 and the hypothetical tax is $240—not $1,000.

The chart assumes itemizing, no other limitations, and a constant 24% rate on the entire balance. It is neither withholding nor a personal tax projection. “W” means winnings, “L” means losses, and “Break-Even” means equal winnings and losses.

The chart isolates the §165(d) change. It does not account for your complete return, state tax, or additional limits on itemized deductions.

Who can claim the gambling loss deduction?

Casual gamblers can claim eligible gambling losses on Schedule A only if they itemize. You cannot add a Schedule A loss deduction to the standard deduction.

IRS Topic 419, updated September 24, 2026, explains that gambling winnings are reported on Schedule 1 with Form 1040, while the loss deduction is claimed separately on Schedule A. Do not substitute annual net profit for the full, properly determined winnings.

A Schedule A loss deduction does not reduce AGI. Even if W − D = 0, your AGI is not necessarily zero. Gambling winnings could affect benefits and credits before the 90% rule, too.

Compare all available itemized deductions with your standard deduction and consider other effects. Gambling losses do not automatically make itemizing the better choice. At high incomes, an overall limitation on itemized deductions may further change the result; IRS Publication 505 also addresses other limitations.

Without itemizing, your Schedule A gambling loss deduction is zero. With $100,000 in winnings, the balance before other deductions would therefore be $100,000—not necessarily your final taxable income.

How do you distinguish a payout from winnings?

A payout may include your original stake, so you should not automatically treat the whole payout as gambling winnings.

For a winning $100 bet at decimal odds of 2.00, the $200 cash payout includes the $100 returned stake. Do not count all $200 as the tax gain, and do not deduct the winning stake again as a gambling loss. Account for separate losing bets with appropriate records.

W-2G issuance thresholds do not define all taxable gambling income. Winnings may still require reporting without that form.

How do you repeat the calculation in the widget?

Enter total winnings of 100000 and total losses of 110000, then select the existing “Single” filing status button. Results update automatically; there is no separate calculation button.

1. Enter 100000 in the total winnings field.
2. Enter 110000 in the total losses field.
3. Select “Single” to reproduce this example. For your own calculation, use your actual filing status—not whichever produces a more attractive estimate.
4. Compare the allowable loss deduction and taxable gambling balance rows.
5. On mobile, scroll the results table horizontally until the new-rule column is visible.

English gambling tax calculator with winnings of 100000, losses of 110000, and both old-rule and 90% rule result columns

Both result columns are shown: the loss deduction falls from $100,000 to $99,000, leaving a $1,000 taxable gambling balance. This is an actual interface capture from localhost, not verification of the production site.

Use the deduction and income rows to check the rule, not the tax rows to determine your 2026 tax bill. The widget’s tax estimate selects a rate from winnings and uses 2025 tax bracket thresholds labeled as 2026. It does not account for other income, state tax, the standard-versus-itemized deduction choice, credits, or your full return.

The deduction formula can be reproduced here. Your actual federal tax, balance due, or refund needs a separate full-return calculation.

How do you report winnings and document losses?

First establish the correct tax amounts from your records, then report winnings and claim the eligible loss deduction separately. Deposit and withdrawal statements alone do not replace gambling records.

1. Identify the applicable rules. Confirm US tax residency, casual versus professional activity, the tax year, and relevant states.
2. Collect records from every operator. Export each platform’s transactions and obtain available casino records, tickets, and statements.
3. Determine tax-defined winnings and losses. Document your method, separate returned stakes, reconcile W-2Gs, and account for balances and transfers across multiple sportsbooks or platforms.
4. Report the federal amounts. For casual gambling, report full, properly determined winnings on Schedule 1 with Form 1040. If itemizing, claim eligible losses under “Other itemized deductions” on Schedule A using the applicable year’s formula.
5. Reconcile tax payments separately. Account for federal withholding and determine whether estimated tax payments are required.
6. Keep the ledger and supporting references. At filing time, check published 2026 form instructions rather than assuming prior-year line numbers or requirements still apply.

This synthetic two-event journal illustrates record fields, not personal experience or an approved method of grouping bets into tax sessions. Amounts are US dollars.

Supporting records can include tickets, operator statements, W-2Gs, and bank records used for reconciliation. A deposit alone does not prove a gambling loss. Winnings left in an app are not exempt simply because you have not withdrawn them.

IRS Publication 529, December 2020 edition, is a historical reference for gambling diaries and supporting records—not authority for the current 90% deduction rule.

The optional ToolsGambling bet tracker can help track bets, profit, and ROI. It does not determine tax sessions, validate W-2Gs, or automatically produce an IRS-ready return.

Can you combine gambling results into sessions?

Do not assume that grouping bets by day or year is an acceptable tax method. The appropriate way to determine gambling winnings and losses depends on the game, facts, and records.

IRS Notice 2015-21 described a proposed safe harbor for electronically tracked slot-machine play. It was not a final, universal authorization to net sports bets, poker, or every app transaction by day.

If session boundaries materially affect your figures, consult a tax professional before filing. You need a defensible, documented method—not annual net profit substituted for full winnings.

What changes for professionals, states, and nonresident aliens?

These situations require separate analysis; the casual US-tax-resident example is not automatically applicable.

• Professional gambling: Reporting may use Schedule C, but professional status depends on facts, not a checkbox. Section 165(d)(2) includes otherwise allowable wagering-transaction expenses within the 90% limitation and winnings cap. It does not allow unlimited business losses or automatic travel deductions. Self-employment tax and qualified business income deduction treatment require separate analysis.
• State tax: Check whether the state conforms to the federal amendment, permits its own gambling loss deduction, and applies residence, source-income, or local tax rules. Start with the state revenue agency. The New Jersey gambling tax guide and Illinois sports betting tax guide are optional further reading, not a reason to copy the federal formula into a state return without checking.
• Nonresident aliens: Under IRS Topic 419 and Publication 515, a 30% tax generally applies to gross gambling winnings not connected with a trade or business, unless a treaty benefit or other exception applies. Exceptions can depend on the game. Nonresident aliens other than residents of Canada generally cannot deduct gambling losses. This guide’s formula is not the default for tourists, and citizenship alone does not determine US tax residency or the applicable rate.

Has the 90% rule been repealed?

At the October 12, 2026 source checkpoint, current §165(d) and IRS Publication 505 still provide for the 90% rule. Legislative proposals and committee approval are not enacted law.

Check the current statute and IRS instructions again before filing. Do not count on a future vote, signature, or refund from a possible repeal.

What should you check year to date and before filing?

Gather your totals, supporting records, and situation-specific questions so you can repeat the calculation without trying to solve a tax issue through additional gambling.

• Separate tax years: 2025 and 2026 returns use different formulas.
• Export records from every platform and casino, not just operators that issued W-2Gs.
• Separate winnings from payouts, returned stakes, deposits, and withdrawals.
• Verify your method for determining winnings and losses; seek advice on disputed session boundaries.
• For 2026, calculate min(0.9 × L, W), then calculate W − D separately.
• Compare all available itemized deductions with the standard deduction.
• Check withholding, estimated payments, and state tax separately from the loss deduction formula.
• Before filing, confirm current §165(d), IRS guidance, and form instructions for the correct tax year.