How do i compare last years return to this year

- Click on the My TurboTax drop-down menu.

- Click on "My Tax Timeline".

- Scroll to the bottom of the page, and click on "Looking for prior year returns?" You should find last year's return.

In Turbo Tax - PC edition (my version is Premier): click FEDERAL TAXES tab on top of window. Then click Federal Review, then click the Continue button. You'll see a summary of current to past year.