If you e-filed the return already ***AND*** it was accepted by the IRS, fire up the TurboTax Business program on your windows computer and open the return. In the upper right of the program click the "FORMS" icon in the blue field to switch to forms mode.
In the left pane scroll all the way to the bottom to see "Postmark Report" and click on that to display the "Electronic Postmark - Certification of Electronic Filing". Print that report, as it's the proof you need to show when the IRS accepted your e-filed return.
