How do I add a W-2G

Here is how to add your gambling activity in TurboTax Online:

• Click on Federal Taxes,  Wages & Income, Wages & Income Summary > Add more income > Less Common Income > Gambling Winnings > Start or Revisit
• Enter the information from the W-2G. If you do not have a W-2G, choose that you did not receive one and proceed to enter the winnings. Continue through the interview to add losses. You can deduct gambling losses as an itemized deduction up to the amount of your gambling and prize winnings.

Here is some more information you may find helpful: How to Pay Taxes on Gambling Winnings and Losses