Gambling tax glossary: W-2G, session method, netting, phantom income and more
By the W2gMatch team · Sources checked 09-06-2026 · General information, not tax advice.
The terms that come up on a gambling tax return, each defined in one sentence with a link to the page that explains it. Winnings, wagering losses, the 90% limit, phantom income, Form W-2G and the 300-times rule, 1099-MISC and 1099-K, win/loss statements, sessions, the diary, withholding, the transcript and the CP2000 notice.
Terms
- Gambling winnings
- All money and the fair market value of prizes won from wagering, taxable in full and reported on Schedule 1 of Form 1040 whether or not any form was issued. More
- Wagering loss
- The amount lost on wagering transactions in a taxable year, deductible only by itemizing, only up to wagering gains and, for tax years beginning after 2025, only 90% of the losses. More
- 90% loss limit
- The rule in section 165(d) from tax year 2026 that allows a deduction equal to 90 percent of wagering losses, still capped at wagering gains. More
- Phantom income
- Taxable gambling income that exists only because the 90% limit leaves 10% of losses undeducted, so a break-even year still produces tax.
- Form W-2G
- The IRS information return a payer files for a single gambling payout that meets the reporting threshold, $2,000 for 2026, and for sports bets is at least 300 times the wager. More
- 300-times rule
- The second W-2G test for sports bets, racing, sweepstakes and lotteries: the payout must be at least 300 times the amount wagered as well as at least the dollar threshold. More
- Form 1099-MISC
- The information return for prizes and miscellaneous income, used by daily fantasy and pick'em products for net annual winnings of $2,000 or more in 2026. More
- Form 1099-K
- The information return a payment platform files for gross payments it settled when they exceed $20,000 across more than 200 transactions; not a measure of winnings. More
- Win/loss statement
- An operator's annual estimate of the wins and losses it tracked on a player's account or card, usually disclaimed as not a tax document. More
- Wagering history
- The wager-by-wager export from an online book or app showing each stake and result; the gross record behind a win/loss statement.
- Session
- A continuous period of one type of play at one establishment, ended by cashing out, within which wins and losses are netted to one gain or loss. More
- Session method
- Reporting each session's net result, gains as winnings and losses as losses, rather than each wager; described by the IRS for casual slot play and never netted across sessions. More
- Netting
- Subtracting losses from winnings before reporting; not allowed on the return except within a single session under the session method.
- Gambling diary
- The contemporaneous record the IRS asks for: date and type of wager, establishment, others present, and amounts won and lost, supported by tickets, statements and receipts. More
- Itemized deduction
- A deduction taken on Schedule A instead of the standard deduction; gambling losses are deductible only this way.
- Schedule 1, line 8b
- The line on Schedule 1 (Form 1040) where gambling winnings are reported as other income.
- Regular gambling withholding
- The 24% federal withholding a payer must take from a payout more than $5,000 above the wager, and for sports and racing at least 300 times the wager; never from slots, bingo or keno.
- Backup withholding
- The 24% withholding a payer takes from any reportable gambling payout when the winner does not furnish a taxpayer identification number.
- Wage and Income transcript
- The IRS transcript listing information returns filed under a taxpayer's identification number, including W-2Gs and 1099s, for the current and nine prior years. More
- CP2000 notice
- An automated IRS notice proposing changes when information returns such as W-2Gs do not match the filed return; not a bill and not an audit. More
- Professional gambler
- A taxpayer whose gambling is a trade or business, reporting on Schedule C, whose business expenses now fall inside the 90%-and-capped-at-gains limit on wagering losses.
- Event contract
- A contract traded on a prediction market that pays a fixed amount if a specified event occurs; the IRS has not said how its gains are characterized. More
- Hand-pay
- A slot machine payout large enough that an attendant pays it in person, typically at the W-2G reporting threshold, where identification is taken for the form.
- Players club
- A casino's loyalty program; the card tracks play and is the source of the win/loss statement, so untracked play is outside it.
Definitions follow the IRS descriptions of winnings, losses, recordkeeping and the W-2G rules, [1] [2] [3] and the amended text of section 165(d). [4]
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Sources
- IRS Tax Topic 419, Gambling income and losses, page last reviewed June 11, 2026
- IRS Publication 529, Miscellaneous Deductions, Gambling losses up to the amount of gambling winnings, Rev. December 2020
- IRS Instructions for Forms W-2G and 5754, Rev. January 2026
- 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
This page is general information about how U.S. federal and state tax rules apply to gambling, written to be checked against the sources it cites. It is not tax advice for your situation. A licensed CPA or enrolled agent should review your return before it is filed.