During the final step, turbotax assigned some 5-digit numbers to my wife and I. What are those numbers, and how can I see them again after sending my return?

Those 5-digit numbers are usually e-file PINs.

 

Your signature ID (also called a self-select PIN) is a random 5-digit number you entered last year, right before you submitted your return. You can use it to verify your identity on this year's return.

 

Note: It's not the 5-digit e-filing PIN you may have gotten from the IRS last year, unless you chose to use the same 5 digits as your signature ID.

We don't store your signature ID in your account and it's not on your printouts. If you forgot last year's signature ID, you'll need to provide your 2022 adjusted gross income (AGI) for verification purposes.

 

You'll be able to use this year's signature ID to verify next year's return, so make sure you record it.