What documents do you need to file gambling taxes?

The checklist: what each document proves and where it goes

The IRS states the requirement in one sentence: “To deduct your losses, you must keep an accurate diary or similar record of your gambling winnings and losses and be able to provide receipts, tickets, statements, or other records that show the amount of both your winnings and losses.” ^[1] Publication 529 lists the records that count: “Form W-2G, Certain Gambling Winnings; Form 5754, Statement by Person(s) Receiving Gambling Winnings; wagering tickets; canceled checks; substitute checks; credit records; bank withdrawals; and statements of actual winnings or payment slips.” ^[2] The table puts those in the order you will gather them, with the line of the return each one feeds.

Sources: Topic 419 ^[1], Publication 529 ^[2], the Form 1040 instructions for Schedule 1 line 8b and the attachment rule ^[6], and the W-2G instructions for the box layout. ^[4]

Step 1: Collect every W-2G and check them against your IRS transcript

A Form W-2G (the payer's report to the IRS of one gambling payout above the reporting threshold) is issued by the payer at the time of a reportable win, and a copy goes to the IRS. For payments made in calendar year 2026 the IRS instructions set one figure: “The minimum threshold amount for payments made in calendar year 2026 is $2,000.” ^[4] For 2025 and earlier years the figures were $1,200 for slots and bingo, $1,500 for keno and $600 for other wagers that also paid 300 times the wager. Either way, the W-2G reports gross winnings; there is no box for losses. ^[4] The threshold page has the game-by-game table.

W-2Gs get lost, mailed to old addresses or never opened in an app. The IRS still has its copy. Your Wage and Income transcript (the IRS record of every information return filed under your Social Security number for a year) “shows data from information returns we receive such as Forms W-2, 1098, 1099, and 5498,” and is available for the current and nine prior tax years. ^[7] Form W-2G is an information return, so each one a payer filed appears there. Get it from your IRS Individual Online Account, where you can view, print or download it at once. ^[8] Mail and phone orders send only the Tax Return and Account transcripts; without online access, Form 4506-T is the way to the Wage and Income transcript. Compare the transcript to the forms in your hand before you file: a W-2G on the transcript that is missing from Schedule 1 is exactly what generates a CP2000 letter later. We explain the transcript itself on its own page.

Note the timing. For a 2026 return, the transcript fills in as payers file their 2026 forms during early 2027, so a transcript pulled in January can still be incomplete. Pull it again before filing.

Step 2: Request a win/loss statement from every operator

A win/loss statement (the operator's annual summary of the wins and losses it tracked on your players card or account) comes from each casino players club and from the tax or documents section of each sportsbook app. Ask for one from every place you played, including operators where you lost, because the losses are the figure the statements help support. Most casino statements are one net number for the year and carry a disclaimer that the figure is an estimate of tracked play only. Read the statement’s own explanation of its figures before you rely on it; a net loss of $4,000 is not $4,000 of losses to enter on Schedule A, it is wins minus losses.

The statement is supporting documentation, not the record. TaxAudit, an audit-defense firm, reports that “the IRS disallowed a taxpayer’s gambling losses because the only verification they had was the information from their Player’s Club Card. The same has happened to taxpayers who have taken their cases to Tax Court.” ^[9] Our page on whether a win/loss statement is enough walks through the cases. If you never used a players card, see whether you need one to get a statement and what to use instead when there is none.

Step 3: Build the session diary the IRS describes

Publication 529 says the diary should show, for each session: the date and type of wager or wagering activity; the name and address or location of the gambling establishment; the names of other persons present with you; and the amounts you won or lost. ^[2] It then adds records by game. ^[2]

• Keno: copies of the keno tickets validated by the establishment, casino credit records and casino check-cashing records.
• Slot machines: the machine number and all winnings by date and time the machine was played.
• Table games: the table number, and casino credit card data showing whether credit was issued in the pit or at the cashier.
• Bingo: the number of games played, the cost of tickets and the amounts collected on winning tickets.
• Racing: the races, the amounts wagered, the amounts collected on winning tickets and lost on losing tickets.
• Lotteries: ticket purchases, dates, winnings and losses.

The diary matters for the winnings too, not only the losses. Under the session method a session ending up $700 is $700 of winnings even if no W-2G was issued, and a session ending down $900 is $900 of losses even though every spin inside it is invisible to the operator. A diary kept as you play is the only document that produces those figures. Our session log template has one column for each Publication 529 element.

Step 4: Gather the proof that backs the diary

The diary is the record; the rest corroborates it. Keep wagering tickets, payout slips, casino credit and marker records, canceled or substitute checks, and bank withdrawals. ^[2] For online play the equivalents are the app’s transaction history, deposit and withdrawal confirmations and the bank or card statements they hit. Hotel folios, travel receipts and parking stubs do not prove a loss, but they prove you were at the casino on the date the diary says you were. An ATM withdrawal on the casino floor proves cash left your account, not that it was lost; the diary entry for that night is what turns the withdrawal into evidence.

If a payout was shared, Form 5754 is the document the payer uses to split it, so each person’s W-2G shows only their share. ^[2] Sweepstakes casinos, fantasy contests, prediction markets and payment apps may send a Form 1099-MISC or 1099-K instead of a W-2G; a 1099-K reports payments processed, not net winnings, so it has to be reconciled against your own records rather than added to Schedule 1 as is. ^[12] The reconciliation page shows how the three document types line up.

Where the numbers land on Form 1040

Gambling winnings are reported in full on Schedule 1 (Form 1040), line 8b, as other income, and that total flows to Form 1040. ^{[1] [6]} Federal tax withheld on your W-2Gs (box 4) goes on Form 1040 line 25 as tax already paid. ^[6] Losses are a separate itemized deduction on Schedule A, line 16, other itemized deductions, and “the amount of losses you deduct can’t be more than the amount of gambling income you reported on your return.” ^{[1] [5]} You never subtract losses from winnings and report the net; the two figures sit on two schedules with their own limits. Nonresident aliens report on Form 1040-NR with Schedule NEC. ^[1]

The deduction is available only to taxpayers who itemize. If your itemized deductions in total fall below the standard deduction, the losses produce no benefit and the winnings are still reported in full. Losses above the year’s winnings are simply lost; there is no carryforward. ^[3]

What changed for 2026: the 90% rule

Section 165(d) of the Internal Revenue Code, as amended by section 70114 of Public Law 119-21 (signed July 4, 2025), now provides that the deduction for wagering losses “shall be equal to 90 percent of the amount of such losses” and is allowed only to the extent of gains from wagering, for taxable years beginning after December 31, 2025. ^[3] The same statute folds otherwise-allowable expenses of carrying on wagering into “losses,” so a professional’s travel and data costs sit inside the same limit. ^[3] Tax year 2025 returns, filed in early 2026, still deduct 100% of losses up to winnings. The documents you need are identical in both years; only the arithmetic on Schedule A changes.

Sources: section 165(d) as amended ^[3], Schedule A instructions ^[5], W-2G instructions for the 2026 figure. ^[4]

Repeal is pending but not enacted. On September 16, 2026 the House Ways and Means Committee voted 38-5 to advance H.R. 10357, which carries language restoring the full deduction from tax year 2026; a House floor vote is not expected before the November 2026 midterm elections, and the Senate has not acted. ^[11] Until a change is signed, the 90% rule is the law for 2026 returns. The 90% cap page tracks it.

Worked example A: $8,000 won, $6,000 lost

Two slot jackpots of $4,000 each produced two W-2Gs totaling $8,000, and the diary plus two casino win/loss statements support $6,000 of losses across the year. Which document proves which figure:

• $8,000 on Schedule 1 line 8b: the two W-2Gs, confirmed against the Wage and Income transcript.
• $6,000 of losses: the session diary totals, corroborated by the two win/loss statements and ATM records.

Worked example B: $100,000 won, $110,000 lost

The cap at winnings is applied first, then the 90%. The $10,000 excess loss was never deductible in either year; what is new is the $10,000 of taxable income on a year that lost money. The calculator runs your own figures and the phantom income guide explains why high-volume players feel it most.

Keep, do not mail: what is attached and what is stored

The Form 1040 instructions say to “Attach Form(s) W-2G and 1099-R to Form 1040 if tax was withheld.” ^[6] That is the only gambling document that goes with a paper return, and an e-filed return transmits the same box data instead. Nothing else is sent. As TaxAudit puts it, the required records “should not be attached and sent with your tax return”; they are kept in case of an examination. ^[9]

How long to keep them: the IRS general rule is three years from filing, six years if you left out income that is more than 25% of the gross income shown on the return, and indefinitely if no return was filed or the return was fraudulent. ^[10] Unreported W-2Gs are the way a gambler trips the 25% test, so keep the whole file for six years to be safe.

State returns

The federal documents cover most state returns because states start from federal figures, but some states allow no gambling loss deduction at all, some tax nonresidents on in-state winnings, and states with withholding (box 15 of the W-2G) need that figure carried to the state return. Check the state-by-state guide for the state you file in and any state you won in.

Turning the pile into one file

W2gMatch reads your W-2Gs and your IRS transcript, matches them form by form, reads each win/loss statement the way that operator writes it, and produces one reconciled workpaper your preparer can file from. The sample file shows what that looks like; the player page explains how to start.

Gather the documents to file gambling taxes

1. Collect every W-2G and pull your IRS Wage and Income transcript. Gather each Form W-2G from every payer, then download your Wage and Income transcript from your IRS online account and confirm every W-2G the IRS holds is in your stack. Add any that are missing.
2. Request a win/loss statement from every operator. Ask each casino players club and each sportsbook app for the year's win/loss statement, including operators where you lost. Read how each statement defines its figures; most give one net number.
3. Total your session diary. Sum winnings and losses by session from the diary you kept during the year, showing date, type of wager, establishment and location, people present and amounts. This is the primary record for both Schedule 1 and Schedule A.
4. Attach the corroborating proof and place the figures. File tickets, payout slips, casino credit records and bank or app records behind the diary. Report winnings on Schedule 1 line 8b, withholding on Form 1040 line 25, and losses on Schedule A line 16, capped at winnings and, for tax year 2026, at 90% of losses. Keep everything; attach only W-2Gs that show withholding.

Related questions

Sources

1. IRS Tax Topic 419, Gambling income and losses, page last reviewed June 11, 2026
2. IRS Publication 529, Miscellaneous Deductions, Gambling losses up to the amount of gambling winnings, Rev. December 2020
3. 26 U.S.C. § 165(d), Wagering losses, as amended by Pub. L. 119-21 § 70114 (Legal Information Institute), amendment effective for taxable years beginning after December 31, 2025
4. IRS Instructions for Forms W-2G and 5754, Rev. January 2026
5. IRS Instructions for Schedule A (Form 1040), line 16, Other itemized deductions, tax year 2025 edition
6. IRS Instructions for Form 1040 and 1040-SR, Schedule 1 line 8b (Gambling), line 25 (Federal income tax withheld) and Assemble Your Return, tax year 2025 edition
7. IRS, Transcript types for individuals and ways to order them, read September 6, 2026
8. IRS, Get your tax records and transcripts, page last reviewed June 27, 2026
9. TaxAudit, Jean Lee Scherkey, EA, When you must send proof of gambling losses with your taxes, March 11, 2026 (secondary source)
10. IRS, How long should I keep records?, page last reviewed June 30, 2026
11. Covers, House committee advances repeal of 90 percent gambling loss deduction limit, September 16, 2026 (secondary source)
12. IRS, Understanding your Form 1099-K, page updated June 28, 2026

Related

• Is a casino win/loss statement enough for the IRS?
• How do I use the IRS Wage and Income transcript for a gambling client?
• How to track gambling sessions for taxes: free 2026 log
• What is the W-2G threshold for 2026?
• What is the OBBBA 90% gambling loss cap for 2026?
• How do I reconcile W-2Gs, 1099-Ks and win/loss statements for a gambling client?