Data Notice: Tax figures and rules cited in “How to Find Your Prior Year AGI for E-File Verification” are projected 2026 values based on IRS guidance and current legislation. Tax law changes frequently through legislation, regulation, and inflation adjustments. Verify all figures with IRS.gov and consult a qualified tax professional. [find-prior-year-agi]

How to Find Your Prior Year AGI for E-File Verification

The content in this how to find your prior year agi for e-file verification guide is educational and informational. It should not be relied upon as tax, legal, or financial advice. Individual tax situations require personalized analysis by a qualified professional. Consult a CPA or enrolled agent for your specific needs.

When you e-file your federal tax return, the IRS requires you to enter your prior year adjusted gross income (AGI) as an identity verification step. This number must match what the IRS has on file for you. If it does not match, your e-file will be rejected. Finding your prior year AGI is usually straightforward, but certain situations — like filing late, filing an amended return, or being a first-time filer — can create complications.

This guide covers every method for finding your prior year AGI and explains what to do in tricky situations.

What Is AGI and Why Does the IRS Require It?

What Is Adjusted Gross Income?

Your adjusted gross income (AGI) is your total gross income minus certain adjustments (also called “above-the-line” deductions). It appears on Form 1040, Line 11. AGI includes:

Wages and salaries
Self-employment income
Interest, dividends, and capital gains
Retirement distributions
Rental income
Other income

Minus adjustments such as:

Student loan interest deduction
IRA contributions
Self-employment tax deduction (half)
Health savings account (HSA) contributions
Educator expenses

Why Does the IRS Require It for E-Filing?

The prior year AGI serves as an electronic signature and identity verification. Since you cannot physically sign an e-filed return, the IRS uses your prior year AGI (or a self-selected PIN from previous years) to confirm you are who you say you are. If you enter the wrong amount, the IRS rejects the e-file.

Method 1: Check Last Year’s Tax Return (Line 11)

The simplest way to find your prior year AGI is to look at your most recently filed federal tax return.

Where to find it:

Form 1040 (2024 or 2025): Line 11 — “Adjusted gross income”
If you used Form 1040-SR (for seniors): also Line 11

Where to Access Your Previous Return

Source	How to Access
Your tax software account	Log into TurboTax, H&R Block, FreeTaxUSA, etc. and view/download your prior year return
Paper copy	Check your physical files for a printed copy
Your tax preparer	Contact the CPA or preparer who filed your return
IRS transcript (see Method 2)	Request online or by mail

If you used tax software, the most recent return is almost always stored in your account. Log in to the software you used last year and look for the option to view or download your prior year return. Navigate to Form 1040, Line 11.

Method 2: IRS Online Account

If you cannot find your prior year return, you can access your AGI through the IRS Online Account portal.

Steps:

Go to IRS.gov/account
Sign in or create an account (you will need an ID.me account for identity verification)
Once logged in, select “Tax Records”
Select “Adjusted Gross Income” or view your tax return transcript
Your prior year AGI will be displayed

The IRS Online Account provides immediate access and is the most reliable source since it shows exactly what the IRS has on file for you.

Method 3: IRS Get Transcript Tool

The IRS Get Transcript tool allows you to view or download a transcript of your prior year return.

Online (Immediate Access)

Go to IRS.gov/transcripts
Click “Get Transcript Online”
Verify your identity through ID.me
Select “Return Transcript” for the applicable tax year
Your AGI appears on the transcript next to “Adjusted Gross Income”

By Mail (~5-10 Business Days)

Go to IRS.gov/transcripts
Click “Get Transcript by Mail”
Enter your SSN, date of birth, and mailing address
Select the applicable tax year
The transcript will be mailed to the address on file with the IRS

By Phone

Call the IRS automated phone system at 1-800-908-9946 to request a transcript by mail. You will need your SSN and mailing address.

Form 4506-T

If the online and phone options are not available, you can submit Form 4506-T (Request for Transcript of Tax Return) by mail or fax. Processing takes approximately ~5-10 business days by mail.

Method 4: Check IRS Identity Protection PIN (IP PIN)

If you have an IRS Identity Protection PIN (IP PIN), you can use it instead of your prior year AGI for e-file verification. The IP PIN is a 6-digit number assigned by the IRS to prevent identity theft.

How to Get Your IP PIN

If the IRS assigned one to you (after an identity theft incident), it is mailed to you annually in CP01A notices
You can also opt in to the IP PIN program through your IRS Online Account at IRS.gov/ippin

If you have an IP PIN, you may be able to use it in place of your AGI for e-file verification (check your tax software for this option).

Special Situations

First-Time Filer

If you have never filed a federal tax return before, your prior year AGI is $0. Enter $0 when prompted during e-filing. This is the most common mistake first-time filers encounter — they leave the field blank or enter an error instead of $0.

Filed Late Last Year

If you filed your prior year return late (after the April deadline), the IRS may not have finished processing it when you try to e-file your current year return. In this case:

Your prior year AGI in the IRS system may still show the year before last — or may show $0 if no processed return exists
Try entering $0 as your AGI
If that does not work, try the AGI from the most recent return the IRS has processed (which may be two years prior)
Check the IRS Get Transcript tool to see which returns have been processed

Filed an Amended Return (Form 1040-X)

If you filed an amended return for the prior year, the IRS may have updated your AGI:

If the IRS has processed the amended return, use the AGI from the amended return (Form 1040-X, Line 1)
If the IRS has not yet processed the amended return, use the AGI from the original return (Form 1040, Line 11)

Amended returns can take ~16-20 weeks to process. Check the status at IRS.gov/wheres-my-amended-return or through the IRS refund tracker.

Married Filing Jointly Last Year, Filing Separately This Year (or Vice Versa)

If you filed jointly last year but are filing separately this year:

Each spouse’s prior year AGI is the same number — the joint AGI from last year’s return (Line 11)
Both spouses enter the same joint AGI, even though they are now filing separately

If you filed separately last year but are filing jointly this year:

Enter your individual AGI from your prior year separate return
Your spouse enters their individual AGI from their prior year separate return
The tax software will handle combining them

Non-Filer Last Year (Had No Filing Requirement)

If you did not file last year because you were not required to, your prior year AGI is $0. Enter $0 when prompted. If you filed a “non-filer” return (to claim stimulus payments or other credits), use the AGI from that return.

Identity Theft Victim

If someone filed a fraudulent return using your SSN, the IRS may have an incorrect AGI on file. In this case:

File a paper return instead of e-filing
Contact the IRS Identity Protection Specialized Unit at 1-800-908-4490
Request an IP PIN for future filings

What to Do If Your E-File Is Rejected for AGI Mismatch

If your e-filed return is rejected because the AGI does not match:

Step 1: Double-Check the Number

Verify you are using the AGI from the correct year’s return (the prior year, not the current year). Confirm it matches Line 11 of Form 1040. Common errors:

Entering the current year’s AGI instead of last year’s
Entering taxable income instead of AGI
Rounding or truncating the number (enter the exact amount, including cents if applicable)

Step 2: Try $0

If you filed late or the IRS may not have processed your prior year return, try entering $0.

Step 3: Use the IRS Get Transcript Tool

Access your transcript to see the exact AGI the IRS has on file. Use that number.

Step 4: File on Paper

If all electronic methods fail, you can always file a paper return. Paper returns do not require prior year AGI verification. Mail the return to the IRS address for your state. Processing takes approximately ~6-8 weeks, longer than e-filing (~21 days), but the return will be accepted.

Frequently Asked Questions

What if I cannot remember which software I used last year?

Check your email inbox for tax-related emails from TurboTax, H&R Block, FreeTaxUSA, TaxAct, or other providers. If you cannot find any, use the IRS Get Transcript tool to access your AGI directly.

Does the IRS round AGI to the nearest dollar?

The IRS typically processes AGI to the nearest dollar. When entering your AGI for e-file verification, use the whole dollar amount shown on Line 11. Do not include cents unless your tax software specifically asks for them.

My spouse and I filed jointly. Do we both use the same AGI?

Yes. If you filed a joint return, both spouses use the same AGI number (the total from the joint return, Line 11). This is true even if only one spouse had income.

I used the IRS Non-Filer Tool to claim stimulus payments. What is my AGI?

If you filed a simplified return through the IRS Non-Filer Tool, your AGI is typically $0 or a very small amount (often $1). Check the confirmation you received or use the IRS transcript tool to verify. For current filing thresholds, see do I have to file taxes.

Can my tax preparer find my prior year AGI?

Yes. If you used a CPA, enrolled agent, or tax preparation service, they should have a copy of your prior year return on file. Contact them and ask for the AGI from Line 11.

What is the difference between AGI and taxable income?

AGI (Line 11) is your income after above-the-line adjustments but before the standard deduction or itemized deductions and before credits. Taxable income (Line 15) is AGI minus deductions. For e-file verification, the IRS wants AGI (Line 11), not taxable income. Review tax brackets explained for more on how AGI flows to your tax calculation.

I filed a paper return last year. How long until the IRS has my AGI on file?

Paper returns typically take ~6-8 weeks to process. If you filed by paper and are trying to e-file shortly after, the IRS may not yet have your AGI. In that case, try entering $0 or file by paper again this year.

Quick Reference: Where to Find Your AGI

Method	Time Required	What You Need
Last year’s tax return (Line 11)	Immediate	Copy of return
Tax software account	~5 minutes	Login credentials
IRS Online Account	~10 minutes	ID.me account
IRS Get Transcript Online	~10 minutes	ID.me account
IRS Get Transcript by Mail	~5-10 days	SSN, address on file
Contact your tax preparer	~1-2 days	Preparer’s contact info
Form 4506-T by mail	~5-10 days	SSN, signature

Tax Disclaimer: This article is for informational purposes only and does not constitute professional tax advice. Tax laws are subject to change, and individual circumstances vary. Consult a qualified tax professional or visit IRS.gov for official guidance on e-filing and AGI verification.