You enter gambling losses after you enter your gambling winnings.
- Type gambling losses in the search bar and click search.
- Click on Jump to gambling losses.
- At the Form W-2G Summary screen, click Done.
- At the Any Other Gambling Winnings? screen, click No.
- The next screen is Gambling Losses. See the screenshot below.
Related information:
https://ttlc.intuit.com/replies/3301128
