After signing in to (continuing) your online return, select Tools from the My Account drop-down list in the upper right corner.
In the pop-up window, click the My Fees button to get a breakdown of your TurboTax charges.
Tip: If these instructions don't work (for example, on your mobile device) open the File section and then proceed to the Review Your Order screen. This also shows the breakdown of your charges.
If you have already filed, here's how to view a breakdown of your fees:
Log into your 2016 Tax Timeline.
Scroll to 'Some things you can do'.
Choose 'View order details'.