ON428 - Ontario Tax

Entering this Amount (from Forms):

Completing the Ontario form

As you prepare your federal return, TurboTax transfers your info to your provincial forms automatically.

Entering this Amount (from Interview):

Entering provincial tax and tax credits (interview)

The calculations of most provincial credits and deductions are based on information (including personal information, T-slips, tuition, charitable and political contributions, etc.) you enter in the federal sections of your return. When you enter this info in the federal sections of the interview it is automatically transferred to applicable the provincial forms.

If you're eligible for credits and deductions that are unique to your province of residence, you'll enter your info here, in the provincial section of your return.
Related information
Schedule ON(S2) - Provincial Amounts Transferred From Your Spouse or Common-Law Partner
Schedule ON(S11) - Provincial Tuition and Education Amounts
ON479 - Ontario Credits
ON-BEN - Application for the Ontario Trillium Benefit and the Ontario Senior Homeowners' Property Tax Grant