How do I enter on my turbo tax for Ontario senior homeowners property tax grant? What line on the submission?

Under the Provincial tab - Provincial Tax Credit Profile - CHECK - Apply for the Ontario Senior Homeowners' Property Tax Grant

Ontario Senior property tax grant

@mamalou1944 As Lise said above, you'll find this in the Provincial part of the interview.

If you are using TurboTax CD/Download Forms mode, use the ONBEN form to apply for the Ontario Senior property tax grant, and other Ontario credits.