If you used TurboTax, you can access your return by logging in using the same TurboTax account that you used to file your previous return. Please see How do I access a prior-year return? for instructions.
If you just need your AGI, you can also get it by obtaining an online tax return transcript from the IRS. Please see Can I get a copy of my tax return from the IRS? for more information.
Please see this Help Article for information regarding the IP PIN.
If you are referring to the five digit Self-Select PIN from TurboTax, there is not a way to retrieve that. For identification purposes, you can enter either last year’s Self-Select PIN or your adjusted gross income (AGI). Please see What is the difference between the five-digit Self-Select PIN I created last year and my Self-Selec... for more information.
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