Foreign Currency Gain or Loss of Controlled Foreign Corporations, REG-103844-26, 91 Fed. Reg. (proposed Aug. 14, 2026)

On August 13, 2026, the Department of the Treasury and the Internal Revenue Service (IRS) released a significant notice of proposed rulemaking under Internal Revenue Code (IRC) Section 987. The proposed regulations introduce a highly anticipated elective regime—the Controlled Foreign Corporation (CFC) exemption election—designed to reduce the overwhelming compliance and administrative burdens associated with tracking foreign currency gain or loss for branches and disregarded entities operated by CFCs. By allowing taxpayers to opt out of the recurring remittance calculations mandated by Section 987(3), Treasury seeks to align foreign currency rules with modern international tax structures while maintaining strict statutory guardrails to prevent tax-motivated basis importation and tax asymmetry.

This article provides an in-depth, technical analysis of the proposed regulations, detailing Treasury’s underlying rationale, the legal authorities cited, the operational and consistency mechanics of the election, the amortization transition rules, and the protective rules governing inbound nonrecognition transactions.

Context and Statutory Authority under Section 987

IRC Section 987 applies to any taxpayer that has a qualified business unit (QBU) with a functional currency other than the U.S. dollar. Section 987(1) and (2) provide the rules for determining and translating taxable income or loss with respect to a Section 987 QBU. Section 987(3) mandates that taxpayers make “proper adjustments” for transfers of property between QBUs of the taxpayer having different functional currencies (including transfers between a CFC and its QBUs) and recognize foreign currency gain or loss upon a remittance from the QBU.

In promulgating these proposed regulations, the IRS and Treasury relied upon several explicit statutory delegations of authority. Section 987(3) directs the Secretary to prescribe proper adjustments for transfers of property. Furthermore, Section 989(c) directs the Secretary to “prescribe such regulations as may be necessary or appropriate to carry out the purposes of this subpart”. Finally, the regulations are issued under the general rulemaking authority of Section 7805(a).

The IRS explained that this extensive regulatory authority justifies establishing a distinct elective regime for CFCs: “The Treasury Department and the IRS are of the view that this authority allows for special elective rules to be prescribed with respect to CFCs that are different from the rules applicable to U.S. persons.”

Rationale for the Proposed CFC Exemption Election

The 2024 final regulations under Section 987 generally required CFCs with U.S. shareholders to track Section 987 QBUs, compute net unrecognized gain or loss on a balance-sheet basis, and recognize currency gain or loss upon remittances. Taxpayers consistently complained that these calculations imposed significant administrative burdens. Treasury responded to these concerns by recognizing that the fundamental tax posture of a foreign corporation differs from that of a domestic taxpayer.

Specifically, because a CFC computes its earnings and profits in a foreign functional currency under Section 985(b), its immediate day-to-day operations are not measured by an accession to wealth in U.S. dollars. The IRS explained this policy pivot as follows:

“The CFC exemption election is intended to reduce the compliance and administrative burdens of applying section 987(3) with respect to section 987 QBUs owned by CFCs. Additional flexibility is warranted in this context because, under section 985, many CFCs have a functional currency other than the U.S. dollar; thus, a CFC’s income is not necessarily measured by its accession to wealth in U.S. dollar terms.”

Furthermore, the IRS noted that ignoring ordinary-course Section 987(3) remittances at the CFC level does not permanently exempt foreign currency fluctuations from U.S. taxation. Instead, other statutory provisions naturally capture these adjustments over time:

“Moreover, if a CFC does not recognize section 987 gain or loss with respect to a section 987 QBU, the economic currency gain or loss with respect to the section 987 QBU generally should be taken into account by the CFC’s U.S. shareholders under other provisions of the Code (for example, in the case of a taxable sale of the CFC stock, under section 1001), such that the U.S. shareholders would, over time, recognize the correct amount of total income with respect to the CFC.”

The Operational Mechanics of the CFC Exemption Election

The proposed regulations add proposed Treas. Reg. § 1.987-15 to govern the effects of the CFC exemption election.

Under proposed Treas. Reg. § 1.987-15(b)(1), when the election is active, “section 987(3) does not apply to an exempt CFC” and the Section 987 regulations apply only to the extent provided in proposed Treas. Reg. §§ 1.987-15 and 1.987-16. However, the core income determination rules under Section 987(1) and (2) remain mandatory. For example, an exempt CFC must still calculate and translate its QBU’s taxable income and earnings and profits under Treas. Reg. § 1.987-3.

To minimize complexity, proposed Treas. Reg. § 1.987-15(b)(3)(i) mandates that the applicable regulatory provisions “are applied as if a current rate election were in effect”. This prevents the exempt CFC from having to track historic exchange rates for historic assets. Under this deemed current rate election, QBU taxable income is translated at the yearly average exchange rate, and transfers between a QBU and its owner are translated at the spot rate on the date of transfer.

In addition, proposed Treas. Reg. § 1.987-15(b)(3)(ii) provides that “an exempt CFC does not recognize section 987 gain or loss under § 1.987-8(e) when a section 987 QBU terminates”.

Significant administrative relief is also provided under proposed Treas. Reg. § 1.987-15(b)(3)(iii), which states that “the recordkeeping requirements set forth in § 1.987-9(b)(2), (b)(4) through (12), and (b)(14) do not apply” to an exempt CFC. Electing taxpayers must merely retain basic records sufficient to substantiate the calculations of pre-election gain or loss and any inbound transactions.

Mandatory Group Consistency and Anti-Avoidance Safeguards

To prevent taxpayers from selectively electing the CFC exemption only for entities with built-in gains while maintaining the default remittance recognition rules for entities with built-in losses, the proposed regulations establish a strict consistency and anti-avoidance framework.

Under proposed Treas. Reg. § 1.987-15(c)(2)(i), “all domestic corporations that are affiliates described in § 1.904(i)-1(b) on the last day of the taxable year... are treated as a single United States person”. Consequently, all consolidated groups and commonly controlled separate domestic corporations (including those separated by a partnership or owned by a common foreign parent) must make consistent CFC exemption elections with respect to their majority-owned CFCs. Additionally, domestic partnerships are treated in the same manner as foreign partnerships for purposes of determining indirect stock ownership under Section 958(a).

The proposed regulations backstop these consistency rules with powerful anti-avoidance provisions. Under proposed Treas. Reg. § 1.987-15(c)(3)(i)(A), if a controlled group transaction is entered into with a principal purpose of triggering a deemed revocation of the election, “the CFC exemption election is not deemed to be revoked and remains in effect”. Conversely, under proposed Treas. Reg. § 1.987-15(c)(3)(i)(B), if a transaction is structured with a principal purpose of avoiding the consistency requirements, “the CFC exemption election is deemed to be made” with respect to those CFCs.

Transition Rules and the Small QBU Asset Threshold Exception

Taxpayers making a CFC exemption election must compute their unrecognized Section 987 gain or loss that accrued in prior taxable years—defined as “pre-election section 987 gain or loss” under proposed Treas. Reg. § 1.987-15(e)(2).

Under proposed Treas. Reg. § 1.987-15(e)(3)(i), this pre-election gain or loss must be recognized ratably over a 120-month amortization period. Treasury explicitly rejected requests by commenters to make this computation optional or allow a “fresh start” elimination of built-in pools. The IRS defended this position by stating:

“The Treasury Department and the IRS are concerned that the election requested by the commenters would allow taxpayers to eliminate previously computed amounts of section 987 gain or loss... and would expose the government to whipsaw. Taxpayers with substantial pre-election section 987 gain could choose to eliminate the gain, while taxpayers with substantial pre-election section 987 loss could amortize the loss over 120 months.”

Recognizing that the burden of this historical reconstruction could overwhelm smaller businesses, proposed Treas. Reg. § 1.987-15(e)(2)(iii) provides a major exception: an exempt CFC is deemed to have “zero pre-election section 987 gain or loss” with respect to any QBU that has average assets of less than $50 million for the three-year period preceding the election year.

To prevent asset shifting, proposed Treas. Reg. § 1.987-15(e)(2)(iii)(B)(3) requires that all QBUs of an exempt CFC residing in the same country be aggregated for purposes of this threshold. Crucially, asset values are determined using U.S. GAAP balance sheet figures on the last day of the taxable year (reported on Form 8858, Schedule F) “without adjustment to conform to federal income tax principles”, significantly simplifying compliance. According to IRS data, this $50 million threshold is estimated to “exempt about 75 percent of section 987 QBUs from calculating pre-election pools, while excluding less than 5 percent of reported QBU assets.”

Furthermore, the proposed regulations amend the 2024 final transition rules in Treas. Reg. § 1.987-10(e)(5)(ii)(A) to recognize pretransition gain or loss over “a period of 120 months” rather than 10 taxable years. This prevents the distortion of accelerated gain or loss recognition that previously occurred when a taxpayer experienced a short taxable year (e.g., recognizing an entire 1/10th of the transition pool in a one-month short year rather than a ratable 1/120th).

Inbound Nonrecognition Transactions and Basis Safeguards

The most technically complex portion of the proposed regulations is proposed Treas. Reg. § 1.987-16, which applies when a domestic corporation acquires the assets of an exempt CFC in an inbound liquidation (Section 332) or reorganization (Section 368(a)(1)).

In the absence of a protective rule, an exempt CFC could repatriate assets into the United States with an exchange-rate-driven “excess asset basis” that has never been subject to U.S. taxation. The domestic corporation could then claim inflated depreciation deductions or losses. The IRS justified the necessity of this rule by stating:

“The Treasury Department and the IRS are of the view that rules are needed to prevent the importation of excess asset basis resulting from unrecognized foreign currency gains when the assets of an exempt CFC are acquired in an inbound reorganization or liquidation described in § 1.367(b)-3(a) (an ‘inbound nonrecognition transaction’)... The related excess asset basis would be imported into the United States and could allow the domestic acquiring corporation to claim excessive deductions or losses in subsequent taxable years.”

Under proposed Treas. Reg. § 1.987-16(d)(1), the transferor CFC must recognize Section 987 gain equal to the amount of its “section 987 asset basis” immediately before the inbound transaction. This gain is recognized immediately before (and not as part of) the nonrecognition transaction, ensuring that the domestic acquiring corporation’s asset basis is not inappropriately increased under Section 334(b)(1)(A) or Section 362(b), which “would reintroduce the misalignment between asset basis and taxable income... that the rules of proposed § 1.987-16 are meant to address.”

Taxpayers may compute this “section 987 asset basis” under one of two proxy methods:

The Lookback Methodology: Based on the sum of the CFC’s annual unrecognized Section 987 gain or loss computed under Treas. Reg. § 1.987-10(e)(3)(iii) for each pre-transaction taxable year ending within a 72-month period preceding the inbound transaction.
The Excess Asset Basis Methodology: Equal to the “excess asset basis” of the foreign corporation determined under Treas. Reg. § 1.367(b)-3(g)(2)(i).

Proposed Treas. Reg. § 1.987-16(e)(1) contains a de minimis exception: the inbound gain recognition rules do not apply if the transferor CFC’s aggregate inside asset basis is less than $25 million.

Notably, the proposed regulations do not permit the recognition of Section 987 losses in an inbound transaction. Treasury defended this asymmetric treatment on two grounds: first, “taxpayers could choose to enter into inbound nonrecognition transactions for the purpose of triggering substantial foreign currency losses”; and second, it is “consistent with the longstanding treatment under § 1.367(b)-3, which... requires an inclusion of income or recognition of gain and does not permit a deduction or recognition of loss.”

Partnership Integration and Parity Rules

Proposed Treas. Reg. § 1.987-7(b) completely revises how partnerships owned by CFCs are treated under Section 987.

To provide parity between branch operations conducted directly by an exempt CFC and those conducted through partnerships, proposed Treas. Reg. § 1.987-7(b)(2) treats a partnership as an “exempt partnership QBU” if it is owned directly or indirectly by an exempt CFC. Under proposed Treas. Reg. § 1.987-7(b)(2)(iv), an “exempt partnership” is defined as a partnership in which at least 80 percent of the capital or profits interests are owned by exempt CFCs in the same controlled group.

An exempt partnership does not recognize pre-election Section 987 gain or loss at the partnership level. Instead, under proposed Treas. Reg. § 1.987-15(g)(3)(ii)(A), “each partner in the exempt partnership... treats its share of the exempt partnership’s pre-election section 987 gain or loss as pre-election section 987 gain or loss of the partner,” recognizing it ratably over the 120-month period. This rule is specifically designed “to prevent pre-election section 987 gain or loss from being shifted to a new partner upon a sale”.

Applicability Dates and Taxpayer Reliance

The proposed regulations under proposed Treas. Reg. §§ 1.987-1, 1.987-6, 1.987-7, and 1.987-15 are generally proposed to apply to taxable years ending on or after the date final regulations are filed with the Federal Register. The inbound nonrecognition rules under proposed Treas. Reg. § 1.987-16 are proposed to apply to transactions completed within taxable years ending on or after the finalization date.

However, proposed Treas. Reg. § 1.987-10(e)(5)(ii) (shifting from taxable years to a 120-month transition period for pretransition gain/loss) is proposed to apply to taxable years beginning after December 31, 2024, and ending on or after November 25, 2025.

Crucially, taxpayers are permitted to rely on the proposed regulations pending finalization:

General Reliance: Taxpayers may rely on the proposed regulations for any taxable year beginning after December 31, 2024, and ending before the finalization date, provided that the taxpayer and all members of its consolidated group and Section 987 electing group consistently follow the proposed regulations in their entirety for such taxable year and all subsequent taxable years ending before the finalization date.
Separate Reliance: Taxpayers may rely separately on proposed Treas. Reg. § 1.987-10(e)(5)(ii) (the 120-month short-year transition rule) for taxable years ending before the finalization date, provided that they and their electing groups consistently follow that provision for the taxable year and all subsequent taxable years before finalization.

In addition, the proposed regulations provide a highly flexible timetable for early years. For taxable years beginning after December 31, 2024, and ending on or before December 31, 2026, the authorized person can make the CFC exemption election on an original return or, for the 2025 taxable year, on an amended return filed on or before October 15, 2027. For taxable years ending in 2027, the election statement must also be filed on or before October 15, 2027. This ensures calendar-year taxpayers have ample time to review the final regulations before committing to the election.

Prepared with assistance from Gemini Notebook.