Your prior-year AGI sits on your Form 1040 under “Adjusted gross income,” and you can also view it in your IRS Online Account or a free IRS transcript.
When a tax site asks for last year’s AGI, it’s doing an identity check. When a lender asks, it’s often a quick income snapshot. Either way, you want the right number, not a guess.
This page walks you through the fastest ways to pull your prior-year AGI, what to do if you can’t find your return, and how to avoid the common mix-ups that cause e-file rejections.
What AGI Means And Why People Ask For It
AGI stands for adjusted gross income. It’s a number on your federal tax return that starts with income and subtracts certain “adjustments” before you take your standard or itemized deduction.
You’ll run into it when you e-file, apply for income-based programs, fill out a student aid form, or compare tax years. The request is usually about consistency: matching a number the IRS already has on file.
Fastest Ways To Get Last Year’s AGI
Most people can get this done in a few minutes if they have one of these on hand:
- A PDF or printed copy of last year’s federal return
- Access to the account where they filed (tax software portal)
- An IRS Online Account that shows tax return details
- An IRS transcript (online or by mail)
The goal is the same each time: locate the line labeled “Adjusted gross income” on your Form 1040 for the year you’re trying to reference.
How To Find Out Your AGI From Last Year On Your Tax Return
If you saved your return, this is the cleanest route.
Step 1: Pull Your Copy Of The Filed Return
Look for the final version you submitted, not a worksheet draft. If you used tax software, download the “filed” or “accepted” copy from your account. If you mailed your return, use your printed set.
Step 2: Open Form 1040 And Find “Adjusted gross income”
On the main Form 1040, scan for the line that literally says “Adjusted gross income.” The number on that line is the AGI for that tax year.
If you’re unsure you’re holding the right form, check that the year at the top matches the year you filed.
Step 3: Use The Same Filing Status Version You Submitted
If you filed jointly, the return has one AGI number for that joint return. If you filed separately, each spouse has their own AGI on their own return.
Don’t pull a number from a state return and assume it matches. State forms often label income differently.
Finding Your AGI From Last Year For E-File Sign-In Checks
If you don’t have a copy of your return, the IRS has two reliable self-serve paths: the IRS Online Account and transcripts.
The IRS notes that you can view prior-year AGI in your online account records, and you can also request a free tax return transcript if you can’t access the account. The IRS page on adjusted gross income lays out both options.
Option A: Check Your IRS Online Account
If you already have an IRS Online Account, this can be the quickest route.
- Sign in to your IRS account page.
- Open your tax records area for the year you need.
- Look for the AGI field in the return details.
The IRS describes online account access to tax return details, including AGI, on its Online Account for individuals page.
Option B: Get A Free IRS Transcript
A transcript isn’t a full photocopy of your return, yet it includes the key lines you need for many tasks, including prior-year AGI.
The IRS explains how to request transcripts online or by mail on its Get your tax records and transcripts page. If you choose mail delivery, build in a little lead time for shipping.
Which Transcript Should You Choose?
If your goal is to grab the AGI number, a “tax return transcript” is often the most straightforward option because it mirrors many line items from the filed return. A “tax account transcript” can also help when you’re trying to confirm processing details.
The IRS lists transcript types and what each one shows on its page about transcript types for individuals and ways to order them.
Ways To Get Prior-Year AGI
Use the table below to pick the path that fits your situation. Each option gets you to the same place: the AGI value that the IRS has on file for that tax year.
| Method | What You See | When It Works Best |
|---|---|---|
| Saved PDF or printed return | Full Form 1040 with “Adjusted gross income” line | You kept your filed copy |
| Tax software account download | Filed return PDF plus supporting forms | You filed with an online provider |
| IRS Online Account | Key return details by year, including AGI | You can sign in and verify identity |
| IRS transcript (online) | Tax return transcript listing key line items | You want a free IRS-sourced record fast |
| IRS transcript (by mail) | Paper transcript mailed to your address on record | You can’t access online tools |
| Automated transcript phone service | Transcript request routed for delivery | You prefer phone ordering over web login |
| Tax preparer copy | Copy of the return that was filed | A preparer filed your return and kept records |
| Paid IRS return copy request | Photocopy of the original return (fee-based) | You need an exact copy for a formal record request |
How To Avoid The Most Common AGI Mistakes
Most AGI problems come from mixing up years, mixing up forms, or typing a number that isn’t the official filed AGI.
Match The Tax Year, Not The Calendar Year In Your Head
“Last year” often means “the most recent tax return you filed,” which may be for the prior tax year. If you’re filing in early 2026, you might be working with your 2025 tax return year. Check the year printed at the top of the Form 1040 you’re using.
Use The Filed Return, Not A Draft
If you ran multiple versions in software, you may have a draft that changed before submission. Pull the copy labeled filed, accepted, or the final PDF you saved after submission.
Don’t Confuse AGI With Taxable Income
Taxable income appears later on the return, after deductions. It is not the same as AGI. If you enter taxable income where AGI is expected, your e-file identity check can fail.
Joint Return Rules Trip People Up
If you filed married filing jointly, use the AGI from that joint return. If you filed separately, each spouse uses the AGI from their own separate return.
What To Do If The IRS Rejects Your E-File AGI Entry
Getting rejected can feel like hitting a wall, yet it usually has a clean fix.
Try The AGI From The Return The IRS Processed
If your prior-year return was amended, processed late, or changed after IRS processing, your saved copy might not match the IRS record used for the check. In that case, a transcript is often the fastest way to confirm what the IRS has on file.
Use The IRS Identity-Check Guidance
The IRS explains what the AGI prompt is checking and what alternate steps to take if you don’t have your prior-year return handy on its page about validating your electronically filed tax return.
Know When “0” Is The Right Entry
Some filers legitimately enter 0 for the prior-year AGI check, such as people who did not file a return for that year. If you filed last year, don’t use 0 as a shortcut. It can trigger rejection when the IRS expects a specific prior-year value.
Troubleshooting Checklist For Last Year’s AGI
Use this table to diagnose the snag and pick the cleanest fix without guesswork.
| Situation | What To Do | What This Fixes |
|---|---|---|
| You can’t find your saved return | Sign in to IRS Online Account or request a tax return transcript | Gets an IRS-sourced AGI value |
| You used tax software last year | Download the filed return PDF from your software account | Avoids using a draft worksheet number |
| You filed jointly last year | Use the AGI from the joint return for that year | Stops mismatches from separate returns |
| Your e-file was rejected for AGI | Confirm the year, then verify AGI via transcript | Matches what the IRS has on file |
| You filed an amended return | Check transcript details tied to the processed record | Accounts for post-filing changes |
| Your return was processed late | Wait for transcript availability, then pull the transcript | Avoids pulling records before they post |
When You Need More Than An AGI Number
Sometimes the request isn’t just “tell me your AGI.” It’s “show me proof.” If a lender, school, or agency wants documentation, ask what they’ll accept.
A tax return transcript is often accepted because it comes straight from the IRS and lists the key lines from your return. If they demand an exact copy of what you filed, that can mean a full return copy request rather than a transcript. The IRS transcript pages spell out the difference between transcript records and a photocopy of a return.
Privacy And Storage Tips That Save Time Next Year
Once you locate your AGI, it’s worth saving the return in a way that you can find again quickly.
- Save the filed PDF in a folder labeled by tax year.
- Use a clear filename like “Federal Return 2025 Filed.pdf.”
- Store a backup in a secure place you control.
- Keep your IRS Online Account login details up to date so you can access records when needed.
That small bit of organization turns next year’s AGI question into a 30-second task.
Quick Wrap-Up
If you have your filed return, open Form 1040 and use the number on the line labeled “Adjusted gross income.” If you don’t have it, your IRS Online Account or a free transcript can confirm the exact value the IRS has on record.
Stick with the right tax year, use the filed version, and you’ll avoid the common e-file mismatch that sends people back to the start.
References & Sources
- Internal Revenue Service (IRS).“Adjusted gross income.”Shows where AGI appears on Form 1040 and points to Online Account and transcripts for prior-year AGI.
- Internal Revenue Service (IRS).“Online account for individuals.”Explains how IRS Online Account provides return details, including AGI, plus access to tax records.
- Internal Revenue Service (IRS).“Get your tax records and transcripts.”Details how to retrieve transcripts online or by mail when you don’t have a return copy.
- Internal Revenue Service (IRS).“Validating your electronically filed tax return.”Explains the prior-year AGI identity check used for e-filing and alternate ways to get the value.
- Internal Revenue Service (IRS).“Transcript types for individuals and ways to order them.”Breaks down transcript options and ordering methods to match the document type to your request.