Reporting and Withholding Requirements
The Internal Revenue Service requires anyone conducting a lottery to adhere to a number of reporting and withholding requirements. Lottery winnings over $600 that are at least 300 times more than the original wager must be reported on IRS Form W-2G. This means that the IRS will know how much you won. In addition, federal withholding taxes must be subtracted from the winnings if the total amount won, minus the amount wagered, is more than $5,000. The amount withheld will be from 28 percent to 31 percent.
Lottery winnings are considered taxable income for federal tax purposes. You receive an IRS Form W-2G at the end of the year which will indicate how much you won. The amount must be reported on line 21 -- other income -- on your Form 1040. The amount of taxes you actually pay on the winnings will depend on the amount you won, your filing status and a variety of other factors.
Lottery winnings are also considered taxable income for state tax purposes. If you live in a state that requires you to file, and pay, state income taxes, then you will be taxed on your winnings. Whether or not you must pay state taxes on the winnings depends on your state of residency. Some states, such as Florida for example, do not require residents to pay state income tax; however states that do collect income tax can run as high as 10 percent.
If you are lucky enough to win a sizable lottery jackpot, and elect to accept the lump-sum payout, consult with a tax professional as soon as possible. Although the federal government requires withholding of a percentage of your winnings, you may actually owe more than the amount withheld. A lump-sum lottery payout can easily put you into the highest tax bracket, which, as of the date of publication, applies to income over $380,500. At the highest tax bracket, you will owe 39.6 percent in federal taxes which is significantly more than the 28 to 31 percent withheld. In addition, state taxes may not have been withheld at all, but still must be paid on your lump-sum winnings.