On a joint tax return, there isn’t a separate AGI for each spouse. The Adjusted Gross Income on Line 11 of Form 1040 is a single combined figure covering both of you, and the IRS doesn’t track which dollars belonged to whom. So finding your spouse’s AGI on a joint tax return usually means one of two things: pulling that combined Line 11 number (which counts as your spouse’s AGI for e-file validation and most other purposes), or rebuilding an individual figure from the underlying W-2s and 1099s when something specifically asks for one spouse’s income alone.
Look at Line 11 First
On any Form 1040 filed for 2020 or later, AGI sits on Line 11.1Internal Revenue Service. Adjusted Gross Income That line is labeled “Adjusted Gross Income,” so if you’re scanning a PDF, search for that phrase. On a joint return, the number you see is both spouses’ income combined after above-the-line deductions.
For older returns, the line has moved around:
- 2019: Line 8b on Form 1040.
- 2018: Line 7 on Form 1040.
- 2017 and earlier Form 1040: Line 37.2Internal Revenue Service. Form 1040 2017 US Individual Income Tax Return
- 2017 and earlier Form 1040A: Line 21.3Internal Revenue Service. 2017 Form 1040A
- 2017 and earlier Form 1040-EZ: Line 4.
Forms 1040A and 1040-EZ were retired starting with the 2018 tax year.
If You’re E-Filing and the Return Was Rejected
The most common reason people go looking for a spouse’s prior-year AGI is that an e-filed return just got kicked back. The IRS uses each taxpayer’s prior-year AGI as an electronic signature, and both spouses must match IRS records for the return to go through.4Internal Revenue Service. Validating Your Electronically Filed Tax Return
Here’s the part that trips people up. If you filed jointly last year, both spouses enter the same combined Line 11 figure. Not half. Not an allocation. The identical number goes in both AGI fields.
A few exceptions to know about:
- If a spouse filed a separate return last year (Single, Head of Household, or Married Filing Separately), that spouse enters the AGI from their own return, not from yours.
- If last year’s return is still being processed by the IRS, enter $0 for AGI to avoid another rejection.4Internal Revenue Service. Validating Your Electronically Filed Tax Return
- If either spouse has an Identity Protection PIN, that IP PIN replaces the AGI signature for that person. Each spouse who has one enters their own.5Internal Revenue Service. Frequently Asked Questions About the Identity Protection Personal Identification Number IP PIN
If you amended a prior-year return, use the AGI from the amended version, not the original.6Internal Revenue Service. About Form 1040-X Amended US Individual Income Tax Return
When You Actually Need One Spouse’s Individual AGI
Sometimes the combined number isn’t what’s being asked for. Income-driven student loan repayment plans, certain scholarship applications, and some state filings want just one spouse’s income. Because the joint return doesn’t split it out, you have to build the individual figure yourself from the source documents.
Sort the Income by Whose Name Is On It
Pull every income document from that tax year and sort by the name and Social Security number on each form. W-2s belong to the employee named on the form. Forms 1099-INT, 1099-DIV, and 1099-NEC each identify a single recipient. For jointly held brokerage accounts, check the statements to see how gains and losses were reported between you.
Pass-through business income on Schedule K-1 names the specific partner or shareholder and shows their share.7Internal Revenue Service. Partners Instructions for Schedule K-1 Form 1065 Schedule C sole proprietor income belongs to whichever spouse ran the business. Add up the income attributable to one spouse to get that spouse’s individual gross income.
Subtract Only That Spouse’s Above-the-Line Deductions
From that gross income, subtract the above-the-line deductions that clearly belong to the same spouse. Traditional IRA contributions are tracked per person. The deduction for half of self-employment tax belongs to the spouse who earned the self-employment income.8Internal Revenue Service. Topic No 554 Self-Employment Tax HSA contributions follow the individual account holder. Student loan interest goes with the spouse whose name is on the loan. Self-employed health insurance belongs to the spouse who bought the coverage for their business.
The result is your spouse’s reconstructed AGI. If you can’t trace a deduction to one spouse cleanly, leave it out rather than guess, or ask a tax preparer to help with the allocation.
Community Property States Change the Math
One boundary worth flagging: if you live in a community property state and filed separately (not jointly) from your spouse, the income-splitting rules override the “whose name is on the form” approach above. Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, and Wisconsin generally treat wages, business profits, and community-property investment income as owned 50/50 by both spouses, regardless of who earned it.9Internal Revenue Service. Publication 555 (12/2024) Community Property
The treatment of income from separate property varies. Arizona, California, Nevada, New Mexico, and Washington keep separate-property income with the owning spouse. Idaho, Louisiana, Texas, and Wisconsin treat most separate-property income as community income to be split.9Internal Revenue Service. Publication 555 (12/2024) Community Property Spouses filing separately in these states attach Form 8958 showing the split. None of this applies to a jointly filed return, where everything is already combined on one Line 11.
When You Can’t Find the Return
If the return itself is missing, the IRS keeps the number for you.
Online Account and Transcripts
The fastest route is the IRS Individual Online Account, which lets you view and download transcripts for prior years.10Internal Revenue Service. Get Your Tax Records and Transcripts Setup runs through ID.me and requires a government ID plus a selfie for verification.11Internal Revenue Service. New Identity Verification Process to Access Certain IRS Online Tools and Services
Ask for a Tax Return Transcript. It mirrors the line items from your filed return and labels the AGI plainly. A Tax Account Transcript will also show AGI. Either one works.
Because a joint return names both spouses, either spouse can pull the transcript from their own IRS online account. What you can’t do is log into your account and see your spouse’s separately filed returns from other years. Those live in their account, not yours.
By Mail or Phone
If the online ID verification doesn’t work, request a transcript by mail. It goes to the address the IRS has on file and arrives in five to ten calendar days.12Internal Revenue Service. Transcript Types for Individuals and Ways to Order Them The automated transcript line is 800-908-9946.
A Certified Copy
For an actual copy of the return rather than a transcript, file Form 4506. The fee is $30 per tax year, and processing takes up to 75 calendar days.13Internal Revenue Service. Request for Copy of Tax Return Transcripts are free and are accepted by most lenders, schools, and agencies, so a full copy is rarely necessary just to get an AGI figure.
If You Need Access to a Spouse’s Separate Records
Tax return information is confidential to the person who filed it. For a joint year, either spouse can pull the transcript. For a year your spouse filed separately, you can’t request their records from the IRS without written authorization. Form 8821 (Tax Information Authorization) lets your spouse designate someone (including you) to inspect or receive their tax information for specified years.14Internal Revenue Service. About Form 8821 Tax Information Authorization It grants access to view records; it doesn’t authorize the designee to act on the spouse’s behalf. This matters most during separation or divorce, when informal access to a spouse’s paperwork disappears.