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IRS Grants Extension for Late Duplicate Form 3115 Filing Due to Fax Transmission Error

9100-1 to a taxpayer who missed the deadline to file a duplicate Form 3115, Application for Change in Accounting Method, due to a fax transmission failure.

Case: PLR-120220-25
Court: IRS Written Determination
Opinion Date: September 22, 2026
Published: Sep 22, 2026
IRS_WRITTEN_DETERMINATION

IRS Grants Relief for Late Duplicate Form 3115 Filing After Fax Error

The IRS granted a 45-day extension under § 301.9100-1 to a taxpayer who missed the deadline to file a duplicate Form 3115, Application for Change in Accounting Method, due to a fax transmission failure. The ruling, issued as a non-precedential private letter ruling (PLR), hinged on the taxpayer’s demonstration of good faith and lack of prejudice to the government. The decision underscores the IRS’s willingness to provide relief for procedural errors when taxpayers act reasonably and without willful neglect.

The Fax That Failed: How a Transmission Error Led to a Late Filing

On Date A, the CPA electronically filed Taxpayer’s Form 1065 for Year 1, attaching the original Form 3115 to report accounting method changes under Rev. Proc. 2015-13, including adjustments for § 263A (Uniform Capitalization Rules), accrued bonuses, vacation pay, and commissions. The same day, the CPA attempted to fax a duplicate copy of the Form 3115 to the IRS as required by section 6.03(1)(a)(i)(B) of Rev. Proc. 2015-13, which mandates that a signed duplicate copy be filed with the IRS no later than the date the original is filed with the taxpayer’s return.

The transmission failed. Unbeknownst to the CPA, the fax did not reach the IRS. However, the CPA had successfully transmitted another facsimile for a different taxpayer to the same IRS fax number earlier that day. The CPA inadvertently confused the successful transmission sheet for that unrelated fax with the failed transmission of Taxpayer’s Form 3115, mistakenly believing the duplicate copy had been submitted.

The error went undetected until Date B, when the CPA reviewed the IRS’s acknowledgment records and realized the duplicate Form 3115 had never been received. On Date C, the CPA submitted a request for a 45-day extension under § 301.9100-3 to file the duplicate copy, citing the procedural misstep as an unintentional clerical failure. The taxpayer’s reliance on the CPA’s handling of the filing process underscored the inadvertent nature of the delay.

IRS Rationale: Good Faith and No Prejudice to Government

The IRS granted the taxpayer’s request for a 45-day extension under § 301.9100-3 because the taxpayer satisfied the three-pronged standard set forth in § 301.9100-3(a): the taxpayer acted reasonably and in good faith, and the granting of relief would not prejudice the Government’s interests. Section 301.9100-1(c) grants the Commissioner discretion to extend the time for making regulatory elections where the taxpayer demonstrates that the delay was not willful or intentional and that the Government’s interests would not be harmed by the extension. Section 301.9100-3(a) codifies this standard for extensions not covered by the automatic relief provisions of § 301.9100-2, requiring the taxpayer to prove that the failure to timely file was due to reasonable cause and that the Government would suffer no prejudice if relief were granted.

The IRS emphasized that the taxpayer’s reliance on the CPA’s handling of the filing process demonstrated reasonable cause. The IRS has consistently held that reliance on a professional’s advice can satisfy the “reasonable cause” prong of § 301.9100-3(a) where the taxpayer provided all necessary information to the advisor and the advisor’s error was unintentional. The IRS further noted that the taxpayer’s prompt correction of the error—once discovered—supported a finding of good faith. The IRS has previously granted relief under similar circumstances where the taxpayer acted diligently to remedy a procedural misstep after discovering it, as reflected in prior rulings granting extensions under § 301.9100-3.

The IRS also determined that granting the extension would not prejudice the Government’s interests. Section 301.9100-3(a) requires the taxpayer to show that the Government would not be disadvantaged by the delay, such as through lost revenue or administrative burden. The IRS reasoned that the taxpayer’s request for a 45-day extension to file the duplicate Form 3115 did not impede the IRS’s ability to process the filing or audit the taxpayer’s return. The IRS has applied this principle in prior cases where the delay was administrative rather than substantive, such as clerical errors in filing procedures. The IRS’s conclusion that no prejudice existed was consistent with its longstanding position that relief under § 301.9100-3 is appropriate where the taxpayer’s delay is procedural and the Government’s interests remain protected.

Implications: What This Ruling Means for Taxpayers and Practitioners

The IRS’s decision to grant relief for a late duplicate Form 3115 filing underscores the procedural pitfalls that can derail accounting method changes under § 446(e), which requires IRS consent for method changes. While the relief was granted under § 301.9100-3—which permits extensions for regulatory elections where the taxpayer acts in good faith and no prejudice to the government occurs—the ruling carries critical lessons for practitioners navigating Form 3115 filings.

First, the case highlights the absolute necessity of verifying successful transmission of duplicate Form 3115 filings. The taxpayer’s reliance on a fax transmission that failed to produce a receipt demonstrates how easily procedural errors can invalidate filings. The IRS’s willingness to grant relief in this instance was contingent on the taxpayer’s demonstration that the delay was administrative rather than substantive, but the ruling does not absolve taxpayers of the burden to confirm receipt. Failure to file the duplicate copy—even due to a transmission error—can result in the disallowance of accounting method changes, leaving taxpayers exposed to potential adjustments under § 481(a) that may trigger accuracy-related penalties under § 6662.

Second, the ruling reaffirms that PLRs are non-precedential and cannot be cited as binding authority. The IRS explicitly stated in the ruling that it “neither expresses nor implies any opinion concerning the tax consequences” of the accounting method changes or the propriety of the proposed methods. Taxpayers and practitioners cannot rely on this PLR to justify similar late filings in future cases, as each request is evaluated on its own facts. The IRS’s disclaimer—“this office neither expresses nor implies any opinion concerning whether the accounting method changes Taxpayer has attempted to make are eligible to be made under the automatic consent procedures”—serves as a stark reminder that PLRs are fact-specific and advisory only.

For practitioners, the ruling underscores best practices to avoid similar errors. Confirming fax receipts with delivery confirmations or using alternative submission methods—such as certified mail or electronic filing through the IRS’s Modernized e-File (MeF) system—can mitigate the risk of transmission failures. The IRS’s prior guidance in Rev. Proc. 2015-13 and recent directives, such as LB&I Directive 2023-02, emphasize the agency’s scrutiny of duplicate filings, making it imperative to coordinate method changes across entities and to withdraw prior filings before resubmitting corrected versions. The IRS’s conclusion that no prejudice existed in this case was tied to the administrative nature of the delay, but future cases may not receive the same leniency if the delay is deemed substantive or if the taxpayer fails to demonstrate good faith.

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PLR-120220-25 - Full Opinion

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