On my previous post, Can I deduct my gambling losses, I mentioned that gambling losses are only deductible up to the amount of the winnings and if you are itemizing your deductions on Schedule A. Also, you need to be able to substantiate your winnings and losses by keeping wagers, tickets, or any records just in case you get audited. You can use the following items for recordkeeping purposes in case you get audited by the IRS:

Lotteries: winning statements, unredeemed ticket purchases, payment slips, W2G form, etc

Table Games: (such as poker, blackjack, roulette, etc.) casino credit card data, the number of tables played.

Racing: amounts collected on winning tickets, unredeemed losing tickets, payment records from the racetrack.

Slot Machines: Record of the machine number and dates and times of all winnings.

Bingo: cost of tickets purchased, amounts collected on winning tickets, any receipts from the casino.

Sports Bar: (parlays, straight picks) ticket wager showing the games played and the cost, amount collected on winning tickets, other supplemental records such as winning statements.

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