When self-preparing your taxes and filing electronically, you must sign and validate your electronic tax return by entering your prior-year Adjusted Gross Income (AGI) or your prior-year Self-Select PIN. Generally, tax software automatically enters the information for returning customers. If you are using a software product for the first time, you may have to enter the information yourself. If you have an Identity Protection (IP) PIN (via a CP01A or the Get an IP PIN Tool), you must enter it when prompted by your software. It will serve to verify your identity instead of your prior-year AGI or prior-year Self Select PIN. You can opt into the IP PIN program through the online tool. There are several ways to find your prior-year AGI: Preferred method You should always retain a copy of your tax return. On your 2022 tax return, your AGI is on line 11 of the Form 1040. For those waiting on their 2022 tax return to be processed, enter $0 (zero dollars) for last year's AGI to ensure the 2023 tax return is accepted by the IRS for processing. If you used a paid preparer last year, you might obtain a copy of last year’s tax return from that preparer. If you are using the same tax preparation software that you used last year, that software will likely have your prior-year tax return for you to access. If you’re not using the same tax preparation software as last year, you may be able to access your prior-year software and view an electronic copy of your prior-year return. If you are a first-time filer over the age of 16, enter zero as your AGI. Alternative methods If you do not have a copy of your tax return, you can get your AGI from one of the IRS self-service tools: Use your online account to immediately view your AGI on the Tax Records tab. If you're a new user, have your photo identification ready. Use Get Transcript by Mail. You can also request a transcript by mail by calling our automated phone transcript service at 800-908-9946. Please allow 5 to 10 days for delivery. Related How to register for IRS online self-help tools