Paying your fees does not file your return. Go all the way through the steps of the FILE section to a big orange button that says "Transmit my returns now" and click that button to e-file.
When you e-file your return you will get two emails from TurboTax. The first one will say your return has been transmitted; the second one will tell you the IRS has accepted or rejected your federal e-file. If you filed a state return, there will be a third email (usually a day or two later) that tells you if the state e-file was accepted or rejected.
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