Depending on which version of TurboTax you are using will depend on where to enter your business expenses as self-employed you will enter your business expenses on the T2125.
When using TurboTax Online:
Select Find in the upper-right area.
In the Find window, type “Self-employment,” select it from the list of results, then select Go.
On the Your Self-employment Profile for 20xx step, select all of the checkboxes that apply to you, then select Continue.
Follow the instructions onscreen to reach the expenses section.
You have finished the expenses section when you reach the [Name], here’s your capital cost allowance for your assets step.
Make sure you have receipts for all expenses claimed (for example, for gas and repairs). The CRA may ask you to provide them to prove your claims.