On the actual T4A slip, there is only one Box 105, which could be taxable or not taxable. When you use Auto-Fill to enter the slip, TurboTax has no way of knowing how to treat that amount, especially since this step comes before you enter your student information.
Aside from this, it's always a good idea to double check any slips that are entered using Auto-Fill, as sometimes the slips themselves are incorrect (even government issued ones).
There are three ways to make corrections to your tax return:
1. through CRA My Account,
2. ReFile using TurboTax,
3. or by mail using a completed Form T1-ADJ, T1 Adjustment Request
Before making any changes to your tax return, please wait until you receive your Notice of Assessment.
