I was getting ready to efile my return and thought I would review it first and noticed it was NOT signed, no did it show my pin either. Why didn't it flag at end stating it needed to be signed with pin number? I had to go back some steps in order to get to the pin to enter. It did not show up the first time.
If you are e-Filing, you actually electronically sign. Your IRS issued e-filing PIN, or your prior year adjusted gross income (AGI), serves as your electronic filing signature. There is nothing additional needed.
This is proof that you are you. You would only Sign the Return if you were to Print your Return to File by Mail. If you Print and File by Mail, then you would actually Sign on the bottom of the 2nd Page.