I don't owe IRS, the problem was knowing whether the desktop TurboTax extension "Complete" message meant the 4868 was actually e-filed by Turbo Tax, or if it meant the form was created and saved, but not filed. TurboTax screens imply an extension *must* be printed & mailed. I had no printer available ...
After getting the ambiguous "Complete" message, I gave up on the desktop client and tried turbotax.com, which clearly declared "Sccess - your extension was sent to IRS". Not sure why desktop message is so vague.
TurboTax called late last night to confirm that "Complete" means "form created and sent". I asked them to provide better messages, consistent with website.
