The requirements for the reporting of and withholding from your winnings depend on the type of gambling, the amount won, and the ratio of the winnings to the wager.
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When you pocket $600 or more (or 300 times your bet) at a horse track, win $1,200 at bingo or a slot machine, or take $1,500 or more from a keno game, the payer must get your Social Security number and notify the IRS that you came into the extra income.
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In addition, if you win $5,000 or more on a gambling transaction, you probably won’t walk away with all the cash. In this case, in addition to reporting your winnings to the IRS, the payer in most cases must withhold federal taxes at the 27-percent rate.
If you refuse to furnish your Social Security number, the payer could take as much as 30 percent of your winnings right off the top to send to the IRS. In either instance, you'll get a Form W-2G (Certain Gambling Winnings), showing the amount you won and, if applicable, how much in taxes have been withheld.
Even if you didn't win enough to require a W-2G filing, you still have to report those gambling winnings. Just because the casino or track or lottery agent didn't report that $25 dollars you won doesn't mean it's not taxable. It's your responsibility to report your winnings, from the W-2G or those smaller jackpots, on line 21 (Other Income) of Form 1040. In addition to gambling proceeds, this is where you'd also report any prizes or awards (cash or cash-value) you won. All this money goes toward your adjusted gross income.
Hold on to those losing tickets, because if you lost money before you won, there's a way you can turn those losses to your tax advantage. You won't have to pay taxes on all that AGI if you reduce it through claiming deductions, either the standard amount or itemized. Compare to see if itemizing would provide a larger deduction than claiming the standard one
If you have large gambling winnings and losses, itemizing may be preferable. You would enter your gambling losses on line 27 (Other Miscellaneous Deductions) of Schedule A Form 1040, Itemized Deductions.
Keep a record of any gambling losses you're deducting. You won’t have to send them as part of your return, but documentation will be needed if the IRS ever questions your losses. Acceptable gambling loss record keeping could include a written log detailing the date of your wagers, the location, amount bet, type of gaming, and wins and losses. You should also hang on to losing lottery tickets, bet slips, and bingo cards.
The good thing about deducting gambling losses is that, unlike some other deductions, you don't have to meet a certain level before you can claim them. But you can only count as much in losses as you won. So if you spent $100 on lottery tickets in a year and won $75 in the same year, you can only deduct $75. The other $25 is just part of the price of playing the game.
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