I'm using turbo tax and it's asking me about numbers for the year before. And I'm confused

[LinaJ2020]

Are you referring to the 2018 AGI?  

The requirement of 2018 Adjusted Gross Income AGI is a requirement by the IRS.  To e-file your 2019 taxes, the IRS uses your 2018 AGI to verify your identity and you only need this if you are e-filing your tax return to the IRS.

To locate your Adjusted Gross Income AGI from last year, please follow these instructions:

If you have filed your last year 2018 tax return and have a copy of the tax forms, you may locate the amounts on line 7 on your 2018 Form 1040 or line 35 on 2018 Form 1040-NR if applies to you.

If you used TurboTax online to file, you can access your account here Login and download a copy of your prior year’s 1040 tax return to find your AGI.  Click here for instructions: Prior year's return

If you do not have a copy of the tax forms, you may order a transcript from the IRS.  Click here Get  Transcript and select  "Get Transcript Online "  On the transcript, look under section "Adjustment to Income" and find the amount for Adjusted Gross Income.

[xmasbaby0]

Is it asking you for your 2018 AGI?  That is a way to identify that the tax return is coming from the same person who used that Social Security number last year.

Where do I find my AGI?

https://ttlc.intuit.com/community/agi/help/how-do-i-find-last-year-s-agi/01/25947

Your 2018 tax return shows your 2018 Adjusted Gross Income (AGI) If you filed a joint return then the AGI is the same for each of you.

Form 1040        line 7

If you are using the same TT account that you used last year, you should also be able to find this number in your Tax Home for 2018

If entering the amount from your 2018 tax return does not work, then try entering “0” instead.  If that does not work and you still cannot e-file, then print, sign, and mail your tax return.

You can get a free transcript of your past return from the IRS: 

https://www.irs.gov/individuals/get-transcript

[armurdoc]

Yes, it is confusing that a paid service would be asking you things about information it already has

[xmasbaby0]

@armurdoc If you transferred your 2020 tax file into 2021 then it has your 2020 AGI already.   If you are not in exactly the same account, your 2021 software cannot pull up your 2020 information.