Hit a big one in 2005? With more and more gambling establishments, the IRS reminds people that they must report all gambling winnings as income on their tax return.

Gambling income includes, but is not limited to, winnings from lotteries, raffles, horse and dog races and casinos, as well as the fair market value of prizes such as cars, houses, trips or other noncash prizes.

Generally, if you receive $600 or more in gambling winnings, the payer is required to issue you a Form W-2G. If you have won more than $5,000, the payer may be required to withhold 27 percent of the proceeds for Federal income tax. However, if you did not provide your Social Security number to the payer, the amount withheld will be 30 percent.

The full amount of your gambling winnings for the year must be reported on line 21, Form 1040. If you itemize deductions, you can deduct your gambling losses for the year on line 27, Schedule A (Form 1040). You cannot deduct gambling losses that are more than your winnings.

It is important to keep an accurate diary or similar record of your gambling winnings and losses. To deduct your losses, you must be able to provide receipts, tickets, statements or other records that show the amount of both your winnings and losses.