In 2009, a 10% tax was enacted upon any and all gambling winnings. RSA 77:38, III defines "gambling winnings" as winnings from lotteries and games of chance including, but not limited to bingo, slot machines, keno, poker tournaments, and any other gambling winnings subject to federal income tax withholding. For New Hampshire residents, the Gambling Winnings Tax is a tax upon all gambling winnings derived from anywhere. For non-New Hampshire residents, the tax is imposed upon gambling winnings from New Hampshire entities. The New Hampshire Lottery Commission and the New Hampshire Charitable Gaming and Racing Commission are required to withhold all tax due and payable to the state from any payout of gambling winnings. If the tax has not been withheld by the New Hampshire Lottery Commission and the New Hampshire Charitable Gaming and Racing Commission, the taxpayer is required to pay the tax directly to the State. Payment of the tax is made by the taxpayer with the filing of the Gambling Winnings Tax return on or before April 15th.

In 2010, Chapter 371, Laws of 2010, effective July 23, 2010, an exemption was created for gambling winnings won prior to January 1, 1999 and distributed in annuity payments.