Signing your electronic tax return requires identity verification and information verification.
To provide identity verification:
Identity verification will be your adjusted gross income (AGI) amount found on Form 1040 (Line 8b on the 2019 form). If you no longer have access to last year's return, you may use the IRS Welcome to Get Transcript tool to view your prior-year AGI. (You'll need to pass the IRS Secure Access: How to Register for Certain Online Self-Help Tools identity verification process. Select the Tax Return Transcript option and use only the Adjusted Gross Income line entry).
Enter zero (0) and leave the Personal Identification Number (PIN) field blank if you:
To keep a record of the AGI amount:
Remember to record the original AGI amount, before any amendments were filed. If you filed a joint return last year, provide the full AGI for both spouses this year.
To provide information verification:
To verify your information and sign the return, enter your date of birth, a new five-digit PIN (it can be the same as last year's PIN), and the date.
Once you've completed the electronic signature, continue through the e-filing steps.
Note that any link in the information above is updated each year automatically and will take you to the most recent version of the document at the time it is accessed.