If the donation is not on a T-Slip, you can remove it in TurboTax Online by going back to the donations section.

Please do the following:

1. Use the Find tool 🔍 and enter “don” in the search bar
2. Select “Donations Profile” from the search results, then click the Go  button.
3. Leave everything checked. 
4. Click Continue to go though the pages and delete the unneeded info.
5. When you are done, you can go back to the “Donations Profile”  and uncheck anything you don’t need anymore.