IRS Grants Extension for Portability Election Under § 2010(c)(5)(A)

IRS Allows Late Portability Election for Estate Under Discretionary Relief

The IRS granted a 120-day extension under § 301.9100-3 to a decedent’s estate for a late portability election under § 2010(c)(5)(A), permitting the surviving spouse to claim the deceased spousal unused exclusion (DSUE) amount. The IRS determined the estate acted reasonably and in good faith in seeking relief, though the ruling remains non-precedential. The decision underscores the IRS’s willingness to grant discretionary relief for late elections when taxpayers demonstrate diligence in compliance efforts.

Estate Fails to File Timely Portability Election Despite Unused Exclusion

The decedent died on Date, survived by their spouse. At the time of death, the estate’s gross estate—including taxable gifts—fell below the § 6018(a) filing threshold, meaning the estate was not legally required to file Form 706, United States Estate (and Generation-Skipping Transfer) Tax Return. However, the estate later discovered that the decedent had an unused portion of their applicable exclusion amount, creating a deceased spousal unused exclusion (DSUE) amount that could benefit the surviving spouse under § 2010(c)(5)(A).

Despite the availability of this exclusion, the estate failed to file Form 706 within the statutory deadline, and as a result, no portability election was made. The estate subsequently sought relief under § 301.9100-3, requesting an extension of time to make the election retroactively. The failure to file was not due to a lack of awareness of the decedent’s estate size but rather a misjudgment regarding the necessity of filing solely for portability purposes.

IRS Grants 120-Day Extension Under Discretionary Relief Provisions

The IRS analyzed the estate’s request under § 301.9100-3, which permits discretionary relief for taxpayers who miss regulatory election deadlines. This regulation allows the IRS to grant an extension if the taxpayer demonstrates that they acted reasonably and in good faith and that granting relief would not prejudice the interests of the government. The estate’s failure to file Form 706 within the statutory deadline arose from a misjudgment regarding the necessity of filing solely for portability purposes, not from a lack of awareness of the decedent’s estate size.

The IRS concluded that the estate satisfied these requirements based on the representations and affidavits submitted. Section 301.9100-1(c) authorizes the Commissioner to grant reasonable extensions under §§ 301.9100-2 and 301.9100-3 for regulatory elections, including portability. The estate’s request met the standards set forth in § 301.9100-3, as it provided evidence of reasonable cause and good faith, and the IRS determined that granting relief would not harm the government’s interests.

As a result, the IRS granted the estate a 120-day extension from the date of the ruling letter to file Form 706 and make the portability election. The election must be made by filing a complete and properly prepared Form 706, along with a copy of the IRS letter, within 120 days at the Kansas City Service Center. The IRS explicitly stated that if it is later determined the estate was required to file Form 706 under § 6018(a)—based on the value of the gross estate and adjusted taxable gifts—the extension would be null and void, as § 301.9100-3 relief is unavailable in such cases. The ruling also cautioned that it was non-precedential, meaning it applies only to the specific estate and cannot be cited as authority in other matters.

IRS Cautions on DSUE Amount and Non-Precedential Nature of Ruling

The IRS underscored its refusal to opine on the Deceased Spousal Unused Exclusion (DSUE) amount or its substantiation in the ruling. The agency explicitly stated that it "neither express[es] nor imply[s] any opinion concerning the tax consequences" of the DSUE calculation or related transactions. Any claimed DSUE amount will only be recognized if the surviving spouse substantiates it upon audit, with the determination made by the Director’s office during examination of Federal gift or estate tax returns. This aligns with § 20.2010-3(c)(1) and (d), which require the surviving spouse to prove the DSUE amount through contemporaneous records, appraisals, and other documentation.

The ruling further emphasized its non-precedential nature, citing § 6110(k)(3), which provides that private letter rulings "may not be used or cited as precedent." This means the relief granted in this specific case cannot be relied upon by other taxpayers or cited in legal arguments. The IRS reinforced that the ruling applies solely to the requesting taxpayer, as stated in the letter: "This ruling is directed only to the Taxpayer requesting it."

Additionally, the IRS cautioned that its conclusions are based entirely on the representations and information submitted by the taxpayer, accompanied by a penalty of perjury statement. While the agency did not independently verify the submitted materials, it reserved the right to verify all claims upon examination. The IRS letter warned that if any representations are found to be inaccurate during an audit, the ruling’s conclusions could be revisited or invalidated. This underscores the importance of accuracy and completeness in PLR requests, as the IRS’s discretionary relief hinges on the taxpayer’s truthful and detailed disclosures.

Portability Election Extensions: Implications for Estate Planners and Taxpayers

The IRS’s recent private letter ruling granting a late portability election under § 301.9100-3 underscores critical lessons for estate planners and taxpayers navigating the intersection of Form 706 filing deadlines and § 2010(c)(5)(A) portability elections. The ruling highlights the non-negotiable importance of timely compliance, the limited but vital role of discretionary relief, and the inherent risks of relying on such relief—particularly given its conditional and non-precedential nature.

Timely filing of Form 706 remains the gold standard. Portability is not automatic; it requires an affirmative election on Form 706 (Part 6, Line 10), even for estates below the filing threshold. The IRS has repeatedly emphasized this requirement, as seen in Rev. Proc. 2022-32, which extended the automatic relief period to five years from the decedent’s date of death. Yet, the ruling in Estate of Lee v. Commissioner (T.C. Memo. 2021-92) demonstrates that five years is not a guarantee of relief—it is merely a procedural safeguard. Executors who miss the deadline must demonstrate "reasonable cause" under § 301.9100-3, a standard that hinges on documented evidence of good-faith efforts or unforeseen circumstances. The IRS’s scrutiny of such claims is rigorous, as evidenced by its refusal to verify representations in PLR requests without the right to revisit or invalidate the ruling upon audit.

The conditional nature of discretionary relief presents another layer of risk. While § 301.9100-3 provides a lifeline for taxpayers who fail to act in time, the IRS’s discretion is not absolute. The agency reserves the right to audit and challenge the representations made in PLR requests, as noted in the closing of the ruling: "While this office has not verified any of the material submitted... it is subject to verification on examination." This means that even if relief is granted, the taxpayer’s fate remains contingent on the accuracy of their disclosures. The non-precedential status of PLRs further compounds the uncertainty, as taxpayers cannot rely on them as binding precedent for future filings.

For estate planners, the ruling serves as a stark reminder of the fragility of portability strategies. The Deceased Spousal Unused Exclusion (DSUE) amount—calculated as the difference between the Basic Exclusion Amount (BEA) at the first spouse’s death and the sum of their taxable estate and adjusted taxable gifts—must be meticulously documented. A miscalculation or omission on Form 706 can lead to IRS adjustments, as seen in PLR 2023-15, where a correction was permitted due to advisor error. Planners must also account for the irreversible nature of portability elections, as clarified in IRS Chief Counsel Memo CCM 2022-001, which states that once elected, the DSUE amount cannot be revoked.

The broader context of portability elections in estate tax planning cannot be overstated. With the 2017 Tax Cuts and Jobs Act’s doubled exclusion amount ($13.61 million in 2024) set to sunset after 2025, the DSUE becomes an even more valuable tool for preserving wealth. However, the five-year automatic extension under Rev. Proc. 2022-32 does not eliminate the need for proactive planning. Executors and advisors must file Form 706 within the extended window or risk the costly and uncertain path of a PLR request. The IRS’s willingness to grant relief in cases like Estate of Lee should not be misconstrued as leniency—it is a safety net, not a default option.

In summary, the ruling reinforces three key imperatives for estate planners and taxpayers:

1. File Form 706 on time, even for portability-only purposes, to avoid the need for discretionary relief.
2. Document every step of the estate administration process, as the IRS’s discretionary relief hinges on the taxpayer’s ability to prove reasonable cause.
3. Proceed with caution when relying on PLRs or § 301.9100-3 relief, given the conditional nature of the relief and the non-precedential status of such rulings.

The IRS’s decision to grant this late election is a rare concession, not a shift in policy. For those who gamble on discretionary relief, the stakes—both financial and procedural—remain high.