If you believe you may have filed with TurboTax, you may want to try our account recovery process; https://myturbotax.intuit.com/account-recovery/;
enter your email, and we'll provide you a list of logins tied to that
email address. If you have more than 1 email address, you should run the
tool on each one.
NOTE: If you are logged into a TurboTax
account, sign out first (including this forum), then close the browser
and reopen it. Then go the account recovery tool via the link above.
If
you don't find it with that method, then run the tool again, but this
time, use the small blue link that says "I don't know my email address
or User ID", and it will look up at your accounts by your SSN and other
parameters.
If you aren't able to find it using this way you can always get a free transcript from the IRS
https://www.irs.gov/individuals/get-transcript
If you are still unable to locate your previous years information, please contact Customer Support. They are able to look back to 2013.
https://ttlc.intuit.com/replies/3300041
