I clicked yes to the "First-Time Charitable Donor Super Credit", but I may have claimed donations in the past. Where can I uncheck that box? I can't find it anywhere.

 

Credits and deductions

When using TurboTax Standard, click on the heading titled Setting up and scroll down to Personal Tax Profile. Click on edit next to Other credits & deductions.  Scroll down to the question, did you make donations to a charity or political party? Under that you will see the question, I made donations for the first time that qualify for the First-Time Donor Super Credit.  Make sure to remove any checkmark that you might have next to it.