Yes. Just make sure to save your work before you
close the tab or window. Then when you come back, you can just login in and
continue where you left off.
In TurboTax
Online 2017 click on “Save” on the top right corner to make sure the
information on the page you are working on is saved before you go.
In TurboTax
Online 2018 click on “Save” on the bottom of the left side menu.
In TurboTax
CD/Download select File>Save from the top left corner, or use the key
command CTR+S.