I filed for an extension and now I'm ready to submit my return. How do I do that?

You don't have to do anything special. Just file your tax return the same as you would if you were filing before April 15.

If you made a payment with the extension, make sure the payment is shown on Schedule 3 line 10. If it's not there, go back to Deductions & Credits and enter it.

Folks, you’re not getting it. I filled out all the forms, uploaded my documents, and then requested an extension because I was waiting on one item. I now want to file with the IRS so I can get my refund. How do I do that?

If TurboTax thinks you are done, you have to "reopen" your tax return to FILE.

Use the bizarre command trick "Add a State" to resume working on your tax return.

@robinson2429 

Otherwise, we can only guess at what your impediment might be.

How do I finish up in TurboTax after filing an extension? (intuit.com)