How do I file an extension with Turbo Tax if I do not have my AGI number? This number is the reason I need an extension. Is there a way to get an extention without it?

posted

Yes, print the 4868, complete it, and mail it in. It is the date that you mail it that matters. You might get a "certificate of mailing" to show that you mailed something to the IRS.

You can find the 4868 at https://www.irs.gov/forms-pubs/extension-of-time-to-file-your-tax-return (look for 4868). As for the IRS e-file of the extension, I think you need your 2017 AGI for that, too.