If you’re wondering why your tax return keeps getting rejected, the answer is almost always the same: something you entered doesn’t match what the IRS or Social Security Administration already has on file. The IRS Modernized e-File system checks every return against government records before accepting it, and one wrong digit, misspelled name, or stale income figure will bounce the whole return back within minutes. A rejection isn’t an audit and isn’t a penalty. It’s a mismatch, and mismatches have specific fixes.
Start With the Rejection Code
Every rejected return comes back with an alphanumeric rejection code that names the exact rule you failed. Your tax software displays it in the status or notification area, usually within minutes of submission. Search that code on IRS.gov or in your software’s help section and you’ll get the field, the likely cause, and the fix.1Internal Revenue Service. Business Rule R0000-500-01
A few codes show up over and over:
- R0000-500-01: your name or Social Security number doesn’t match IRS records.
- IND-031 or IND-032: your prior-year adjusted gross income doesn’t match what the IRS has on file.
- IND-510 or IND-512: a dependent’s Social Security number already appeared on another return for the same tax year.
Whatever code you got, work from it. Guessing wastes submissions.
Name or Social Security Number Doesn’t Match
The single most common cause of a rejected return is a mismatch between the name or SSN on your Form 1040 and what the Social Security Administration has on file. The system does a character-by-character comparison, so tiny discrepancies fail: a transposed digit, a misspelled first name, a missing Jr. or Sr.1Internal Revenue Service. Business Rule R0000-500-01
Hyphenated last names cause a lot of these. If your Social Security card says “Smith-Jones” and you entered “Smith Jones” or just “Jones,” the return will bounce. Same story with name changes after marriage or divorce. Your return has to match the SSA’s current record, not your driver’s license and not what you go by day to day. If you recently changed your name, update it with the SSA first, then file. Trying to force through a name the SSA hasn’t recorded just generates repeat rejections.
Pull out your Social Security card and check every character against what you entered. If it all looks right and the return still bounces, contact the SSA directly. Their records may contain an error, or a prior name change may not have processed.
Wrong Prior-Year AGI
When you e-file, the IRS verifies your identity by checking the adjusted gross income from your prior-year return, the number on line 11 of Form 1040. It functions like a password for your electronic signature.2Internal Revenue Service. Adjusted Gross Income Enter the wrong figure and the return is rejected immediately.3Internal Revenue Service. Validating Your Electronically Filed Tax Return
The usual culprits:
- You filed a Form 1040-X last year. Use the AGI from your original return, not the amended amount. The IRS specifically says not to use the adjusted figure from an amendment or a math error correction.4Internal Revenue Service. Instructions for Form 1040-X (12/2025)
- The IRS hasn’t finished processing your previous return. Enter $0 to bypass the check.3Internal Revenue Service. Validating Your Electronically Filed Tax Return
- You’ve never filed a federal return before. Enter $0.
- You rounded. Enter the exact dollar amount. $52,347 entered as $52,350 will fail.
If you can’t find last year’s return and don’t remember the number, request a tax return transcript through the Get Transcript Online tool at IRS.gov. It shows your AGI along with most line items from your original return.5Internal Revenue Service. Transcript Types for Individuals and Ways to Order Them You’ll need to verify your identity through the IRS Secure Access process, but once you’re in, the transcript is available immediately.
Someone Already Claimed Your Dependent
If another person already filed a return using your dependent’s Social Security number for the same tax year, your e-file will be rejected. The IRS processes on a first-to-file basis: the first return through with that SSN gets accepted, and every one after it gets bounced.6Internal Revenue Service. Age, Name or SSN Rejects, Errors, Correction Procedures
This shows up often with separated or divorced parents. It also happens when someone files a fraudulent return using your dependent’s information. The fix is the same either way: you can’t resolve it through e-file. Print the return, mail it in, and the IRS will decide who’s actually entitled to claim the dependent. It takes longer than a normal return, and you should be ready to provide documentation supporting your claim.
Missing or Wrong Identity Protection PIN
An Identity Protection PIN is a six-digit number the IRS assigns to taxpayers flagged for identity theft, with a new one generated each year. If you have one, it has to appear on every return you file. Enter the wrong number, or leave it off entirely, and the return is rejected.7Internal Revenue Service. FAQs About the Identity Protection Personal Identification Number (IP PIN)
The IP PIN program is now open to anyone with an SSN or ITIN who can verify their identity, not just identity theft victims. You can opt in through the Get an IP PIN tool on IRS.gov.8Taxpayer Advocate Service. Get an IP PIN to Protect Yourself From Tax-Related Identity Theft Once you enroll, you’re in for good: a new PIN every year, and no return goes through without it. If you lost this year’s PIN, retrieve it from the same IRS tool. Calling the IRS is the backup, but hold times run long during filing season.
Missing Form 8862 for a Disallowed Credit
If the IRS previously disallowed a credit like the Earned Income Credit, Child Tax Credit, or American Opportunity Tax Credit, and you’re now trying to claim it again, you have to attach Form 8862. Without it, the return is rejected electronically. If the original disallowance came with a ban (two years for reckless disregard, ten years for fraud), you’ll have to mail the return during the ban period with Form 8862 and supporting documentation, and you can appeal the ban if you believe it was imposed in error.9Internal Revenue Service. Instructions for Form 8862
How Long You Have to Fix It
A rejection doesn’t automatically mean you missed the filing deadline, but the window is short and worth understanding before you keep resubmitting.
The Five-Day Perfection Period
If your Form 1040 is rejected on or before April 15, you get five calendar days after the deadline to correct the error and resubmit electronically. For tax year 2025 returns filed in 2026, the IRS set April 15 as the filing deadline and April 20 as the last day to retransmit a rejected timely-filed return.10Internal Revenue Service. Tax Year 2025 / Processing Year 2026 Form 1040 MeF Due Dates Resubmit successfully in that window and the IRS treats the return as filed on time. Five calendar days, not business days. Miss it and you’re late.
The Paper Filing Fallback
If you can’t get the e-file to go through, print the return and mail it. To count as timely, the paper return has to be postmarked by the later of the original due date (including any extension) or 10 calendar days after the IRS notified you of the rejection.11Internal Revenue Service. Age, Name or SSN Rejects, Errors, Correction Procedures That 10-day rule is the safety valve when something unresolvable, like a dependent conflict, blocks e-filing entirely.
An Extension as a Safety Net
If a rejection has you pinned against the deadline, file Form 4868 for an automatic six-month extension. That pushes your filing deadline to October 15 and gives you room to work out the problem.12Internal Revenue Service. Form 4868, Application for Automatic Extension of Time to File U.S. Individual Income Tax Return The extension covers filing, not payment. If you owe, interest and penalties start accruing April 16 whether you extended or not.
What It Costs If You Don’t Fix It
A rejected return that never gets corrected and refiled is, in the eyes of the IRS, an unfiled return. The failure-to-file penalty runs 5% of your unpaid tax for each month or part of a month the return is late, up to 25%. More than 60 days late, the minimum penalty is the lesser of $525 (for returns due in 2026) or 100% of the tax owed.13Internal Revenue Service. Topic No. 653, IRS Notices and Bills, Penalties and Interest Charges The failure-to-pay penalty adds another 0.5% per month, also capped at 25%.14Internal Revenue Service. Failure to Pay Penalty Both penalties run at the same time, and interest compounds daily on top.
If you’re owed a refund, there’s no late-filing penalty, but the IRS holds your money until the return is accepted, and you have only three years from the original due date to claim it before it’s forfeited for good.