When your tax return is rejected due to AGI, it almost always means the prior-year adjusted gross income you entered doesn’t match the figure the IRS has on file for you. The IRS uses that number as an identity check on e-filed returns, and the match has to be exact. Even a one-dollar difference produces the same automatic rejection. The fix is usually quick: find the correct number, re-enter it, and resubmit.
Why the IRS Checks Your Prior-Year AGI
You can’t hand-sign an e-filed return, so the IRS verifies your identity by matching your prior-year AGI (and your date of birth) against its own records.1Internal Revenue Service. Self-Select PIN Method for Forms 1040 and 4868 Modernized e-File This check runs the same way whether you file through commercial software, a tax pro, or IRS Free File. The verification is automated, so there’s no one at the IRS deciding your figure is close enough. Transposed digits, a rounded number, or a figure pulled from the wrong year’s return all bounce the same way.
Common Reasons the AGI Match Fails
Typos and Rounding
The most frequent cause is a data-entry mistake. Transposed digits, a misplaced decimal, or rounding when the IRS expects the exact figure will all trigger a mismatch. If your AGI was $52,347 and you type $52,374, it rejects.
Wrong Tax Year
For a return you’re filing during the 2026 season, the IRS wants the AGI from your 2024 return, the most recent one on file. Not two years back, and not the current return you’re trying to submit.
Filing Status Changed Between Years
Switching between joint and separate filing trips up a lot of people. If you filed jointly last year, the IRS has one combined AGI for both spouses. Each spouse enters that same joint figure this year, even if one earned nothing, and even if you’re filing separately now.
Going the other way is simpler. If you filed separately last year and jointly this year, most software asks for each spouse’s AGI individually. Enter whatever appeared on each separate return. If one spouse didn’t file at all last year, enter $0 for that person.
You Filed an Amended Return
Do not use the corrected AGI from a Form 1040-X. The verification system checks against your original, accepted return. The amended figure, a math-error correction, or any other IRS adjustment will reject. Pull the AGI from the return as originally filed.
Your Prior-Year Return Hasn’t Been Processed
This one catches people who did everything right. If the IRS hasn’t finished processing last year’s return, there’s no AGI on file to match against. Enter $0 as your prior-year AGI.2Internal Revenue Service. Validating Your Electronically Filed Tax Return You can check processing status through your IRS Online Account.
First-Time Filer
If you’ve never filed a federal return, the IRS has no AGI on record. Enter $0.2Internal Revenue Service. Validating Your Electronically Filed Tax Return This applies to anyone over 16 filing for the first time.
How to Find Your Correct AGI
Your prior-year AGI is on Line 11 of Form 1040.3Internal Revenue Service. Adjusted Gross Income A saved copy of last year’s return, on paper or as a PDF, is the fastest source. Use the exact number on that line.
If you can’t find your copy, three IRS-side options work:
- IRS Online Account. Log in at irs.gov and open your tax records. Your prior-year AGI is shown directly.4Internal Revenue Service. Get Your Tax Records and Transcripts
- Tax Return Transcript. Request one through the online portal or by phone. It shows line items from your original return as filed. Coverage is the current year plus three prior years.5Internal Revenue Service. Transcript Types for Individuals and Ways to Order Them
- Last year’s tax software. If you used a commercial product, log back in. Most save your prior return and display the AGI.
The figure shown in your Online Account or on the transcript is the AGI as the IRS processed it, and that’s the number verification runs against. If your own records disagree with the IRS figure, use the IRS one.
Fixing the Rejection and Resubmitting
A rejected return has not been filed. It’s as if you never hit submit, so the deadline clock keeps running while you fix it.
Open your tax software, go back to the identity verification step, and enter the correct AGI from Form 1040 or your transcript. Then resubmit. Most e-filed resubmissions are accepted quickly, though the IRS doesn’t promise a specific turnaround.6Internal Revenue Service. Topic no. 301, When, How and Where to File
The rejection notice will name the specific problem. Reject code IND-031-04 means the primary taxpayer’s AGI didn’t match; IND-032-04 means the spouse’s AGI didn’t match.7Internal Revenue Service. IND-031-04 The spouse code shows up often on joint returns when one partner’s number was entered wrong.
If you’ve verified the AGI against a transcript and the return still won’t go through, paper filing is your fallback. Print the return, sign it, and mail it to the IRS service center for your area. Paper returns skip AGI verification entirely. Processing takes longer, but it gets the return in.
Watch the Filing Deadline
A rejection doesn’t extend your due date. If your return is rejected on or near April 15, you have a five-calendar-day grace period to correct the error and retransmit. A resubmission accepted within that window is treated as timely. Miss it, and the return is late.
Late filing carries a failure-to-file penalty of 5% of unpaid tax per month (up to 25%), plus a separate failure-to-pay penalty of 0.5% per month on any balance. If the return is more than 60 days late, the minimum penalty is $435 or 100% of the tax due, whichever is less.8Office of the Law Revision Counsel. 26 USC 6651 – Failure to File Tax Return or to Pay Tax
If the deadline is close and you can’t resolve the AGI issue in time, file Form 4868 for an automatic six-month extension to file. You still need to pay any estimated tax owed by the original deadline to avoid interest. The extension itself can usually be e-filed without AGI verification, which buys you time to sort the mismatch out.
When a Rejection Could Signal Identity Theft
Most AGI rejections are data-entry mistakes. But if you’ve triple-checked the number against an IRS transcript and the return keeps bouncing, consider that someone else may have already filed a return under your Social Security number. A fraudulent return would change the AGI on file for you and cause your legitimate one to fail verification.
Other warning signs: IRS correspondence about a return you didn’t file, an AGI mismatch notice when you’re certain your figure is right, or unfamiliar income showing on your transcript. If you suspect identity theft, file Form 14039, the Identity Theft Affidavit, and submit your real return on paper alongside it.9Internal Revenue Service. Form 14039, Identity Theft Affidavit The IRS will investigate and, once resolved, process your legitimate return.
Preventing This Next Year With an IP PIN
The cleanest way to avoid this problem going forward is to enroll in the IRS Identity Protection PIN program. An IP PIN is a six-digit number the IRS assigns you, entered at filing in place of the standard AGI check.1Internal Revenue Service. Self-Select PIN Method for Forms 1040 and 4868 Modernized e-File It also blocks anyone else from e-filing under your Social Security number without the PIN.
Anyone with a Social Security number or ITIN can enroll. The fastest route is your IRS Online Account. If you can’t verify your identity online and your income is below $84,000 (or $168,000 for married filing jointly), you can apply using Form 15227.10Internal Revenue Service. Get an Identity Protection PIN You can also apply in person at a Taxpayer Assistance Center. The IRS issues a new IP PIN each year, so retrieve your current one before you file.
Once enrolled, include the IP PIN on every federal return, including amended and prior-year filings. Leaving it off or entering an old one will cause its own rejection, so store it with your other tax documents.