After you file

You have to open up your return interview before you will have Tax Tools and subtab Print Center in the left menu column.     If your return interview is closed because TurboTax thinks you were finished, then you will not have a full menu.  To get the full menu at the Tax Home look for a link "Add a State".  That doesn't really add one but will open the return back up.   When the interview opens back up, you should have the full menu, then follow @LenaH instructions above to go to the Print Center to retrieve a PDF.

NOTE:  When you open your return back up, if you have already filed ,do not make any changes in it.  If you later have to amend the return, it has to start off exactly as it was when it was originally filed.   If you haven't yet filed the return, you can make changes in it.

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NOTE:  Remember all PDF tax documents and tax data files are very sensitive files, since they contain your personal ID info, financial data, and possibly bank account numbers, etc.  Be sure to store them safely and securely to guard against computer theft, hacking, etc.