I tried it and it does not work with deluxe. Everywhere it says you can but no where does it say "how". Created a new account using my account email address. All looked good up front but each account will charge you for the software. Not sure why. It is as if you do not have the software already nor an account. I am not a software expert but it should be as simple as a button for new return for families. So the correct answer to the Question is - Yes you can input and file for multiple returns as long as you pay for each one.
