What is the Prior Year PIN?
The Prior Year PIN is the five digit electronic signature used to sign your Tax Year 2012 tax return. You either created a PIN signature or your ERO assigned or generated a PIN signature if you used a tax professional to e-file your 2012 tax return. You can use the prior year PIN in lieu of the prior year AGI to verify your identity when using electronic signature.
If you do not remember your prior year PIN, you can just leave this field blank and fill in one of the other two.
You can also call the IRS toll-free number at 1-800-829-1040 for your prior year AGI or prior year PIN. If you can give them certain information (such as your name, SSN, and current address), you may receive the prior year original AGI amount or prior year PIN over the phone.