Can I edit a completed return which has been completed for filing but not printed and sent?

[TurboTaxLise]

Yes, of course, you can.  Simply sign in, return manager page, you will see your tax return, you can open it and do whatever editing you need to it. Make sure once completed editing, you go through the Review section to ensure you have no errors, warnings before you decide to either Netfile or print your return for mailing.