The form is used to declare government related payments. Wisconsin has several casinos throughout the state, most of which serve alcohol.and casino in niagara CASINO NIGHT THE OFFICE ONLINE ¨ - G Form (Unemployment, state tax refund) ¨ Gambling Income (W-2G or records showing income, as well as expenses). Other Income – Provide All Forms , etc. Unemployment Compensation (Form G) Financial Planning/Consultation Fees. Gambling Losses Limited to Total Gambling Winnings. If Form G from the IRS shows gambling winnings of $5,, you can claim losses of no more than $5,, even if your losses were far greater.