Completion of the Filing Process · Electronic filing
Rejected returns and resolution
tax year · reviewed 2026-08-19 · I. Ohu
The rule
The IRS acknowledges every transmission, and every return in it is either accepted or rejected. An accepted return is considered filed as soon as it is signed electronically or the IRS receives a paper signature. A rejected return does not meet the processing criteria and the IRS considers it not filed. That single sentence generates everything else on this page, because a return that is not filed cannot be timely unless something rescues it.
What rescues it is the transmission perfection period — a grace window during which a corrected resubmission is treated as filed on the date of the original attempt. The window differs by return type, and the two numbers are the most tested facts in this area.
For an individual income tax return submitted on or before the due date, Publication 1345 provides that the return will be considered timely filed if the taxpayer corrects the electronic portion and resubmits it by the fifth calendar day after the due date of the returnTY2026. If the taxpayer chooses not to have the electronic portion corrected and retransmitted, or the IRS cannot accept the return for processing at all, a paper return must be filed — and to be timely it must be filed by the later of the due date or 10 calendar days after the IRS notification of rejectionTY2026.
For business returns filed through Modernized e-File, Publication 4163 sets the paper fallback at a return postmarked by the due date including extensions, or 10 calendar days after the IRS last gives notification the return was rejectedTY2026. Before filing on paper, corporations and partnerships required to e-file must contact the e-help Desk to attempt to resolve the reject conditions, and tax-exempt organizations must do the same — Forms 990, 990-EZ, 990-PF, 990-T and 4720 filed by a private foundation must be e-filed, and a paper return will be sent back to the filer.
The ERO’s duty runs alongside. Where the IRS rejects the electronic portion and the ERO cannot fix the reason, the ERO must take reasonable steps to inform the taxpayer within 24 hours of the rejectionTY2026, and must provide the taxpayer with the business rules that caused the rejection together with an explanation.
Current figures
| Item | Period |
|---|---|
| Individual return — electronic resubmission | the fifth calendar day after the due date of the returnTY2026 |
| Individual return — paper fallback | the later of the due date or 10 calendar days after the IRS notification of rejectionTY2026 |
| Business return — paper fallback | postmarked by the due date including extensions, or 10 calendar days after the IRS last gives notification the return was rejectedTY2026 |
| ERO must inform the taxpayer | within 24 hours of the rejectionTY2026 |
| New taxpayer declaration required if data changes by more than | $50 to “Total income” or “AGI”TY2026 |
| Or by more than | $14 to “Total tax,” “Federal income tax withheld,” “Refund” or “Amount you owe”TY2026 |
How it works in practice
A perfected return keeps its original filing date; a paper substitute mailed inside the window is timely under the ordinary mailing rule (IRC § 7502).
Read the acknowledgment, not the summary screen. The acknowledgment identifies the problem through a system of business rules, which say why the return rejected, and element names — tag names — which say which fields of the electronic return data are involved. A representative who reads the business rule usually knows the fix within a minute; one who reads only “rejected” resubmits blindly.
Most rejects are identity, not arithmetic. Publication 1345 names the common causes: incorrect taxpayer identification numbers, the same number used on more than one return, and the wrong name associated with a number. The Name Control — the first four significant letters of a last name or business name as recorded by the Social Security Administration or the IRS — is a large share of them, most often because a newly married taxpayer files under a married name the SSA record does not yet show.
A missing or wrong IP PIN rejects the return. An identity protection PIN is a six-digit number known only to the taxpayer and the IRS, entered when the software prompts for it. The IRS states that correct IP PINs must be entered on electronic and paper returns to avoid rejections and delays, and that an incorrect or missing IP PIN will cause an e-filed return to be rejected or a paper return to be delayed until it can be verified. The IP PIN is used on Forms 1040, 1040-NR, 1040-PR, 1040-SR and 1040-SS onlyTY2026, and it must be used on any federal return filed during the year, including prior year returns. It is generally viewable in the online account from mid-January through mid-NovemberTY2026.
The IP PIN is annual. It is valid for one calendar year and a new one is generated each year for the account. A taxpayer the IRS enrolled as a confirmed identity theft victim receives a CP01A notice with the new number each year; a taxpayer who opted in online must retrieve the number online each year, because no CP01A is mailed. There is no fixed number of years after which the process stops.
A paper substitute for a rejected return has required contents. Publication 4163 sets them out for business returns, and the same discipline is right for individuals. After calling the e-help Desk to report that the return was not accepted, the paper return should include:
- An explanation of why the paper return is being filed after the due date.
- A copy of the reject notification — the acknowledgment.
- A brief history of the actions taken to correct the electronic return.
- REJECTED ELECTRONIC RETURN – [DATE] written in red at the top of the first page, the date being the date of the first reject within the perfection window.
- A signature. The PIN used on the rejected return may not be used on the paper return.
Publication 4163 separately recommends retaining a copy of the submission receipt, the rejected transmission file and the rejected acknowledgment. Retaining the submission receipt is a recommendation for the file, not a required element of the paper return.
Correcting can require a new signature. Rejected individual return data can be corrected and retransmitted without new signatures or authorisations only where the changes stay within both thresholds in the figures table. Cross that line and the taxpayer must sign a new declaration before the corrected return goes out.
Two days after the deadline
Ignatius Warmerdam’s return is transmitted on 14 April and rejects the same evening on a dependent identification number. The preparer resolves it and retransmits on 17 April.
The return is timely. It was submitted on or before the due date and the corrected version was resubmitted within the perfection window, so it is treated as filed on the original submission date. The client owes no late filing addition. What would have destroyed this is delay: the window runs from the due date, not from when the office next opened the file, and a resubmission on the seventh day is late even if the reject was the IRS’s doing.
The corporation that could not be perfected
Perpetual Ironworks, a corporation required to e-file, rejects on a schema error its software vendor cannot resolve. The controller proposes to print the return and mail it immediately.
Not yet. Publication 4163 requires a corporation or partnership required to e-file to contact the e-help Desk to attempt to resolve the reject conditions before filing on paper. Only after that does the paper route open, and then the return must be postmarked by the later of the due date including extensions or ten calendar days after the last rejection notification. The paper return must carry the explanation, a copy of the reject acknowledgment, a brief history of what was tried, the red “REJECTED ELECTRONIC RETURN” annotation with the date of the first reject, and a handwritten signature — the PIN from the rejected return cannot be reused.
The IP PIN nobody asked for
Rosalinde Achterberg was an identity theft victim three years ago. Her return rejects. Her preparer, knowing the history, tells her the IP PIN programme “ran for three years and must have ended.”
It did not. An IP PIN is valid for one calendar year and a new one is generated each year for the account, with no fixed end. Achterberg was enrolled as a confirmed victim, so a CP01A notice with the current year’s number was mailed to her; she can also view it in her online account during the months it is posted. The reject is a missing IP PIN, the fix is to obtain the current one and enter it, and the return will then transmit. Telling her the programme expired would have sent her to a paper return that would itself be delayed for verification.
How this has changed
The perfection period concept has been stable, but the surrounding practice has moved with the mandate. When most returns were paper, a reject was an inconvenience; now that corporations, partnerships and tax-exempt organizations above the thresholds must e-file, a reject that cannot be perfected is a compliance problem, and the requirement to call the e-help Desk before printing reflects that — a paper Form 990 from a filer required to e-file is simply sent back.
The identity layer is the part that has changed most. The IP PIN began as a remedial measure for confirmed victims and is now open to anyone with a social security number or ITIN who can verify their identity, as a proactive step. From 2024 returns the IRS also began accepting an e-filed return claiming a dependent who has already been claimed on another return, provided the primary taxpayer includes a valid IP PIN — turning what was previously an automatic reject followed by a paper filing into a resolvable one.
Exam focus
The two perfection periods are the reliable questions: five calendar days after the due date for an individual electronic resubmission, ten calendar days for the paper fallback and for business returns. Know that a rejected return is not filed. Know the required contents of the paper substitute, and that the submission receipt is not among them. On the IP PIN, know that it is valid for a single calendar year and that a new one is generated each year — a question offering “three years” is testing exactly that error.
Check yourself
1. An individual return is transmitted on the due date and rejects. By when must the corrected return be resubmitted electronically to be treated as timely?
A. Two calendar days after the due date B. Five calendar days after the due date C. Ten calendar days after the due date D. Thirty calendar days after the due date
Answer: B. The return is then considered timely filed as of the original submission.
2. A corporation’s e-filed return is rejected and cannot be corrected. When must the paper return be filed to be timely?
A. Within two days of the rejection B. By the due date only, with no extension for the rejection C. By the later of the due date including extensions, or ten calendar days after the last rejection notification D. Within thirty days of the rejection
Answer: C — and the filer must first contact the e-help Desk to attempt to resolve the reject.
3. Which is not a required element of a paper return filed to replace a rejected electronic return?
A. The rejected electronic return date written on the return B. A copy of the rejection notification C. A copy of the submission receipt D. An explanation of why the return is being filed after the due date
Answer: C. Retaining the submission receipt is a recommendation for the firm’s records, not a required element of the paper return.
4. How long is an identity protection PIN valid?
A. For the taxpayer’s lifetime B. For one calendar year, with a new one generated each year C. For three years following an identity theft report D. Until the taxpayer changes address
Answer: B. There is no fixed number of years after which the assignment stops.
5. What is the status of a return the IRS has rejected?
A. Filed, with processing suspended B. Filed, but subject to correction C. Not filed D. Filed as of the date the rejection is resolved, in all cases
Answer: C. It is treated as filed on the original date only if it is perfected within the applicable window.
Change log
- Initial draft against Publications 1345 (Rev. 12-2025) and 4163.