IRC 954: Subpart F Income Categories -- FPHCI, FBCSI, FBCSEI, High-Tax Exclusion, and NCTI Coordination Practitioner Guide

IRC 954 is the engine of Subpart F taxation. It answers the threshold question that every CFC analysis must resolve before any other computation begins: which of the CFC's income items are taxable to the U.S. shareholder currently, regardless of whether a distribution was made? The answer determines the Subpart F income amount that flows to Form 5471 Schedule I, drives the IRC 951(a) inclusion, creates Section 959(c)(2) PTEP, and sets the starting point for the NCTI computation that follows under the post-OBBBA IRC 951B regime.

This guide is written for CPAs, tax attorneys, and enrolled agents who advise U.S. shareholders of CFCs. It covers all six categories of Subpart F income defined in IRC 954(a), the threshold and exclusion rules that modify those categories, the high-tax exclusion election and its unsettled interaction with NCTI, the PTEP and FTC consequences of a Subpart F inclusion, and the open questions that remain without IRS guidance as of July 2026. All statutory citations, regulatory references, and example amounts must be verified at IRS.gov and against current Treasury regulations before reliance in any specific client matter. This guide is for informational purposes only and does not constitute legal or tax advice.

Section 1: IRC 954 in Context -- How Subpart F Works Alongside NCTI

The Statutory Structure

Subpart F (IRC 951 through 965) is the foundational regime for current U.S. taxation of CFC income. IRC 951(a)(1)(A) requires a U.S. shareholder to include in gross income its pro-rata share of the CFC's Subpart F income for the tax year, whether or not a distribution is made. IRC 954 defines what counts as Subpart F income. The two provisions are inseparable in practice: practitioners must identify the categories of income under IRC 954, apply the applicable exceptions and threshold rules, and then report the resulting amount as a current inclusion under IRC 951(a).

The OBBBA enacted a second current-inclusion regime alongside Subpart F. Effective for CFC tax years beginning after December 31, 2025, IRC 951B requires a U.S. shareholder to include Net Controlled Taxable Income (NCTI) -- essentially the CFC's net income that is neither Subpart F nor otherwise excluded -- on an annual basis. NCTI is a separate regime from Subpart F. Both apply simultaneously for post-2025 CFC years. The existence of NCTI does not reduce or alter the Subpart F analysis under IRC 954; it adds a second layer of current inclusion to be computed after the Subpart F amount is determined. Verify the interplay of IRC 951 and IRC 951B against the OBBBA statutory text and IRS.gov; final regulations are pending as of July 2026.

The Ordering Rule: Subpart F First, Then NCTI

The post-OBBBA ordering -- subject to final regulations -- places Subpart F income inclusions first. The CFC's gross income is reduced by the Subpart F income (and certain other items specified in the OBBBA statute) before NCTI is computed on the remainder. This ordering has a material planning consequence: income characterized as Subpart F income is excluded from the NCTI base and therefore cannot benefit from the IRC 250 deduction available to NCTI income. Verify the current Section 250 deduction rate and mechanics at IRS.gov; no specific percentage is stated in this guide, as Treasury has authority to modify the rate and the computation. Practitioners should model whether reclassifying income out of Subpart F (through applicable exceptions) and into the NCTI base produces a better outcome in a given year, taking into account the different inclusion and credit rates for each regime.

Both Regimes Generate Section 959(c)(2) PTEP

A U.S. shareholder's inclusion of Subpart F income under IRC 951(a) creates Section 959(c)(2) PTEP in the CFC's earnings and profits. A U.S. shareholder's NCTI inclusion under IRC 951B likewise creates Section 959(c)(2) PTEP. Both types of PTEP are excluded from the U.S. shareholder's income when subsequently distributed under IRC 959(a), and both reduce the IRC 1248 ceiling on a later sale of CFC stock. For practical purposes, practitioners must maintain PTEP account schedules (Form 5471 Schedule P) that separately track Subpart F PTEP and NCTI PTEP by PTEP group and FTC basket, as the FTC implications differ. Verify PTEP mechanics and Schedule P organization against IRC 959, IRC 961, and IRS.gov. See also the companion guide on PTEP mechanics and ordering rules linked in the Related Guides section.

Section 2: The Six Categories of Subpart F Income (IRC 954(a))

IRC 954(a) identifies six categories of income that constitute Subpart F income. They are not equally common in practice: FPHCI (IRC 954(c)) and FBCSI (IRC 954(d)) are the most frequently litigated and planned around. FBCSEI (IRC 954(e)) arises regularly in multinational service models. FBCORI (IRC 954(g)) applies only to oil and gas operations. Insurance income (IRC 953/954(b)(2)) arises in captive and related-party insurance structures. International boycott income and illegal payments (IRC 954(a)(5)-(6)) are the rarest and receive brief treatment here; practitioners with clients in regions subject to boycott concerns should consult specialized resources beyond the scope of this guide. Each category is addressed in its own section below. All category definitions must be verified against the current text of IRC 954 and applicable Treasury regulations at IRS.gov.

Section 3: Foreign Personal Holding Company Income (FPHCI) -- IRC 954(c)

What FPHCI Includes

FPHCI is the Subpart F category that captures passive-type income earned by a CFC. It is the broadest and most commonly encountered category. Under IRC 954(c)(1), FPHCI includes the following types of income (verify each item against the current text of IRC 954(c)(1) at IRS.gov, as Treasury regulations and rulings may modify the items listed below):

• Dividends, interest, royalties, rents, and annuities (IRC 954(c)(1)(A)): The core passive income types. A CFC that holds portfolio investments or receives interest from related-party loans will almost invariably generate FPHCI unless an exception applies.
• Net gains from property producing dividends or interest (IRC 954(c)(1)(B)): Gains from sales or exchanges of property that produces (or would produce) FPHCI items, such as stock and debt instruments.
• Net gains from commodity transactions (IRC 954(c)(1)(C)): Gains from commodity transactions, subject to an exception for CFCs that are dealers in the commodity or that use the commodity in the ordinary course of their business.
• Net foreign currency gains (IRC 954(c)(1)(D)): Net gains attributable to foreign currency transactions, to the extent they are not directly related to the CFC's business needs. Losses offset gains to arrive at the net amount.
• Income equivalent to interest (IRC 954(c)(1)(E)): Income that would be treated as interest under a substance-over-form analysis, including certain notional principal contract income and other economic substitutes for interest. Verify against Treas. Reg. 1.954-2(h) (confirm current citation at IRS.gov).
• Certain personal service contract income (IRC 954(c)(1)(H)): Income from personal service contracts under which the person entitled to the service can designate the individual performer, and the performer is a 25% or more owner of the CFC. This provision targets related-party service arrangements involving CFC-owned talent. Verify the ownership threshold and conditions against IRC 954(c)(1)(H) at IRS.gov.

Key Exceptions Within IRC 954(c)

IRC 954(c) exceptions are numerous and highly fact-specific. The following are the most significant in practice. All exceptions must be verified against the current text of IRC 954(c) and Treas. Reg. 1.954-2 at IRS.gov before relying on them to exclude income from FPHCI:

• Same-country exception for rents and royalties (IRC 954(c)(2)(A)): Rents and royalties received from a related person for the use of property within the CFC's country of organization are excluded from FPHCI. The rents and royalties must be paid for the use of property in the same country where the CFC is organized, and the payor must be a related person as defined in IRC 954(d)(3). Verify the related-person definition and the "same country" requirement against IRC 954(c)(2)(A) and Treas. Reg. 1.954-2 at IRS.gov.
• Active-conduct exception for rents and royalties (IRC 954(c)(2)(A)): Rents and royalties derived in the active conduct of a trade or business by the CFC are excluded from FPHCI, even if the payor is a related person, provided the CFC is the lessor or licensor that actively develops, maintains, and improves the licensed property or the leased asset. This exception is highly fact-specific. Verify the active conduct standard against Treas. Reg. 1.954-2(b) and (d) (confirm current citations at IRS.gov).
• Related-party look-through rule (IRC 954(c)(6)): Dividends, interest, rents, and royalties received or accrued from a related CFC that is a controlled foreign corporation are excluded from FPHCI to the extent attributable to non-Subpart F income of the payor CFC. This look-through rule, sometimes called the "954(c)(6) exception," prevents cascading Subpart F inclusions within a CFC group when one CFC pays another CFC for legitimate business reasons. The look-through rule was enacted as a temporary provision and has been extended multiple times; verify its current status and the applicable requirements at IRS.gov for the relevant tax year before relying on it.
• Banking and financing exceptions (IRC 954(c)(2)(B) and (C)): Interest income received by a CFC in the active conduct of a banking, financing, or similar business in which it is predominantly engaged is excluded from FPHCI. Verify the "predominantly engaged" standard and the applicable regulatory requirements against Treas. Reg. 1.954-2(e) (confirm current citation).

Section 4: Foreign Base Company Sales Income (FBCSI) -- IRC 954(d)

The Core Rule

FBCSI under IRC 954(d) targets a specific offshore deferral structure: a CFC that acts as an intermediary in a buy-sell transaction between related parties, where the goods are manufactured outside the CFC's home country and sold for use outside the CFC's home country. The policy concern is that without FBCSI, a U.S. parent could route purchase and sales functions through a low-tax CFC, sheltering the trading margin in that jurisdiction indefinitely.

Under IRC 954(d)(1), income is FBCSI if it is derived from the purchase of personal property from a related person and its sale to any person, or the purchase of personal property from any person and its sale to a related person, in either case where: (1) the property was manufactured, produced, grown, or extracted outside the CFC's country of organization; and (2) the property is sold for use, consumption, or disposition outside the CFC's country of organization. Both legs of the "outside the country" test must be satisfied. Verify the current text of these requirements against IRC 954(d)(1) and Treas. Reg. 1.954-3 at IRS.gov before applying FBCSI in any client matter.

The Related Person Definition

FBCSI requires a purchase from or sale to a "related person" as defined in IRC 954(d)(3). A person is related to the CFC if: (1) the CFC controls the person; (2) the person controls the CFC; or (3) both the CFC and the person are controlled by the same person. For this purpose, "control" means more than 50% ownership of the voting power or value of stock (for corporations) or a more than 50% interest in profits or capital (for partnerships). Verify the precise related-person definition against IRC 954(d)(3) at IRS.gov; the control thresholds may differ from the U.S. shareholder threshold under IRC 951(b).

The Same-Country Manufacturing Exception

The most commonly litigated FBCSI exception is the manufacturing exception. Under IRC 954(d)(1) and Treas. Reg. 1.954-3(a)(4), income is not FBCSI if the CFC itself manufactures, produces, grows, or extracts the property in its country of organization. "Manufacturing" for this purpose generally requires a substantial transformation of the raw materials into a different product -- not merely packaging, labeling, or minor assembly. Treas. Reg. 1.954-3(a)(4)(i)-(ii) provide alternative standards, including a "substantial contribution" standard that was addressed in T.D. 9731 (2015 final regulations); verify the current status and text of the applicable regulations at IRS.gov, as these rules have been subject to amendment. A CFC that performs genuine manufacturing in its home country generally escapes FBCSI on those sales.

The Branch Rule

Treas. Reg. 1.954-3(b) contains the "branch rule," which can collapse the manufacturing and sales exceptions when a CFC conducts those functions in different countries through branches rather than subsidiaries. Under the branch rule, if a CFC uses a branch in a second country to manufacture or sell goods, and the effective tax rate on the branch's income differs substantially from the CFC's home-country rate, the regulations may treat the branch as a separate corporation for FBCSI analysis -- potentially creating FBCSI where the headline structure would otherwise avoid it. The branch rule is fact-intensive and requires detailed analysis of the CFC's operational structure. Verify the branch rule mechanics against Treas. Reg. 1.954-3(b) (confirm current citation at IRS.gov) before advising clients with multi-branch CFC structures.

Section 5: Foreign Base Company Services Income (FBCSEI) -- IRC 954(e)

The Core Rule

FBCSEI under IRC 954(e) captures income earned by a CFC from the performance of technical, managerial, engineering, architectural, scientific, skilled, industrial, commercial, or similar services performed for or on behalf of a related person, where the services are performed outside the CFC's country of organization. The paradigm case is a CFC that provides shared services or back-office support to a related U.S. parent or to other affiliates outside the CFC's home country, earning a service fee that is reported in a low-tax jurisdiction.

Two conditions must both be satisfied for income to be FBCSEI: (1) the services must be performed for or on behalf of a related person (as defined in IRC 954(d)(3)); and (2) the services must be performed outside the CFC's country of organization. If either condition fails -- for instance, if the services benefit an unrelated third party rather than a related person, or if all services are performed within the CFC's home country -- the income is not FBCSEI. Verify the current text of IRC 954(e)(1) and Treas. Reg. 1.954-4 at IRS.gov before applying FBCSEI to any client engagement.

The Same-Country Exception

Under IRC 954(e)(1)(B), income from services performed in the CFC's country of organization is excluded from FBCSEI, even if the services benefit a related person. This same-country exception means that a CFC performing genuine, in-country services for a related U.S. parent (rather than for customers in third countries) can avoid FBCSEI if the service work is physically carried out within the CFC's jurisdiction. The exception is not elective; it turns on the actual location of service performance. Documentation of where the services are physically rendered is therefore critical. Verify the same-country requirement against IRC 954(e)(1)(B) and Treas. Reg. 1.954-4 (confirm current citation) at IRS.gov.

FBCSEI and Arm's-Length Transfer Pricing

A CFC's FBCSEI income is determined based on the income actually received. If the related-party service fee is not arm's length under IRC 482, the IRS may reallocate income between the CFC and its related parties, which can increase or decrease the FBCSEI amount. Practitioners advising multinationals with CFC shared-service centers should ensure that transfer pricing documentation under IRC 482 and Treas. Reg. 1.482-9 (verify current citation) is current and supports the intercompany service fee arrangement, as both FBCSEI exposure and transfer pricing risk attach to the same set of facts.

Section 6: FBCORI, Insurance Income, and Rare Categories

Foreign Base Company Oil-Related Income (FBCORI) -- IRC 954(g)

FBCORI under IRC 954(g) includes income derived from oil and gas activities that occurs outside the CFC's country of organization. The categories covered include income from the extraction, processing, transportation, distribution, and sale of oil, gas, or related products, to the extent derived outside the country of organization. FBCORI is relevant only for CFCs engaged in the oil and gas industry; practitioners advising energy-sector multinationals should verify the full text of IRC 954(g) at IRS.gov. Treasury regulations implementing IRC 954(g) should be confirmed at IRS.gov for current citations and any amendments. The high-tax exclusion under IRC 954(b)(4) may apply to FBCORI, subject to the same HTE election mechanics described in Section 7.

Insurance Income -- IRC 953 and IRC 954(b)(2)

Insurance income is treated as Subpart F income under IRC 954(b)(2) by reference to IRC 953. IRC 953 defines "insurance income" as income attributable to the issuing or reinsuring of any insurance or annuity contract in connection with risks located in the United States, or to the issuing or reinsuring of contracts for related-person risks (regardless of where those risks are located). The captive insurance context is the most common planning scenario: a multinational that routes insurance risk to a low-tax CFC captive will need to analyze whether the CFC's income is Subpart F insurance income under IRC 953. Verify the insurance income definition and any applicable exceptions against IRC 953, IRC 954(b)(2), and the current IRS.gov guidance on captive arrangements before advising clients with CFC insurance structures.

International Boycott Income and Illegal Payments -- IRC 954(a)(5)-(6)

IRC 954(a)(5) includes in Subpart F income any income that is attributable to participation in an international boycott under IRC 999. IRC 954(a)(6) includes income attributable to the payment of bribes, kickbacks, and similar illegal payments that are not deductible under IRC 162(c). These categories are rare in practice for most U.S. multinationals but can arise in transactions involving certain geographic markets. Practitioners with clients in regions designated as boycotting countries under IRC 999 should verify whether boycott income applies and consult the current list of designated countries at IRS.gov. The illegal payments category is self-applying: income associated with payments that violate IRC 162(c) is Subpart F income regardless of where earned.

Section 7: Threshold Rules -- De Minimis, Full Inclusion, and High-Tax Exclusion

The De Minimis Rule -- IRC 954(b)(3)(A)

The de minimis rule provides a "safe harbor" from Subpart F treatment for CFCs with only a small amount of Subpart F-type income. Under IRC 954(b)(3)(A), if the sum of the CFC's gross foreign base company income and gross insurance income for the year is less than the lesser of (i) 5% of gross income or (ii) $1 million, then for purposes of IRC 954(a), no portion of the CFC's gross income is treated as foreign base company income or insurance income.

The de minimis rule applies at the level of the CFC for the tax year. It is an all-or-nothing rule: if the threshold is satisfied, none of the CFC's income is Subpart F income for that year; if the threshold is not satisfied, the rule has no effect and the normal category analysis applies. The 5% and $1 million thresholds stated here are as set forth in the statute; practitioners must verify the current thresholds against the text of IRC 954(b)(3)(A) and any regulatory modifications at IRS.gov for the applicable tax year before relying on this rule. Do not apply these thresholds without first confirming that they have not been modified.

The Full Inclusion Rule -- IRC 954(b)(3)(B)

The full inclusion rule operates in the opposite direction from the de minimis rule. Under IRC 954(b)(3)(B), if the sum of the CFC's gross foreign base company income and gross insurance income for the year exceeds 70% of gross income, then for purposes of IRC 954(a), the entire gross income of the CFC is treated as foreign base company income. The effect is to convert all CFC income into Subpart F income when the CFC's activities are predominantly of the Subpart F type.

Like the de minimis rule, the full inclusion rule is applied at the CFC level for the tax year. The 70% threshold stated here is as set forth in the statute; verify the current threshold against the text of IRC 954(b)(3)(B) and IRS.gov for the applicable tax year. The full inclusion rule can produce a dramatically larger Subpart F inclusion than the category-by-category analysis would otherwise generate, and it can catch practitioners by surprise in years when a CFC's income mix shifts toward passive or base company activities.

The High-Tax Exclusion (HTE) -- IRC 954(b)(4) and Treas. Reg. 1.954-1(d)

The high-tax exclusion is an elective provision that allows a CFC to exclude from Subpart F income any item of income subject to an effective foreign tax rate greater than 90% of the maximum U.S. corporate rate. If the U.S. corporate rate is 21%, the resulting HTE threshold would be 18.9%. However, practitioners must verify the current U.S. corporate rate and compute the resulting 90% threshold at IRS.gov for the applicable tax year; the corporate rate may change and this guide does not guarantee that 21% is the applicable rate in the year of the practitioner's analysis.

The HTE election is an annual election made on the CFC's return (via the U.S. shareholder's Form 5471 or, in the case of a U.S. consolidated group, on the consolidated return). Importantly, the HTE election is not made on an item-by-item basis -- it applies to all items of income that qualify under the effective foreign tax rate test in the year the election is made. T.D. 9896 (issued in 2020) finalized the rules for making the HTE election, including the requirement to test effective foreign tax rates at the level of "tested units" (which can differ from the CFC entity level). Certain aspects of the T.D. 9896 framework remain in proposed regulation status; verify the current state of the regulations at IRS.gov for the applicable tax year before advising on HTE elections.

Because the HTE election excludes income from Subpart F, income excluded under the HTE election is not PTEP-generating on exclusion. If the election is later revoked or fails to apply, the income is Subpart F income and generates PTEP at that point. The HTE election can have significant downstream effects on the NCTI computation, the IRC 250 deduction, and the FTC basket position. Model the consequences of the HTE election in both the Subpart F and NCTI contexts before recommending it to a client.

Section 8: PTEP Consequences of Subpart F Inclusions

Subpart F Inclusion Creates Section 959(c)(2) PTEP

When a U.S. shareholder includes Subpart F income under IRC 951(a)(1)(A), that inclusion is added to the CFC's earnings and profits as Section 959(c)(2) PTEP. The PTEP tracks the amount of income that has already been taxed at the shareholder level. Subsequently, when the CFC distributes earnings that constitute PTEP, the distribution is excluded from the U.S. shareholder's gross income under IRC 959(a) -- the shareholder is not taxed again on income already included under IRC 951(a). This exclusion prevents double taxation of the same economic income.

PTEP generated by Subpart F inclusions is tracked separately from PTEP generated by NCTI inclusions, even though both are Section 959(c)(2) PTEP for ordering purposes. The distinction matters because the FTC basket applicable to Subpart F PTEP (generally the general limitation basket for most categories, but the passive category basket for FPHCI items that fall there) may differ from the basket applicable to NCTI PTEP. Form 5471 Schedule P tracks PTEP by PTEP group and basket. Verify the PTEP group definitions and Schedule P mechanics against IRC 959, IRC 960, and the current Form 5471 instructions at IRS.gov; instructions are updated periodically and reflect the current PTEP group regime.

For further detail on PTEP mechanics, ordering rules, and basis adjustments, see the companion guide: IRC 959/961 PTEP mechanics and ordering rules for Subpart F and NCTI inclusions under OBBBA.

Basis Adjustments Under IRC 961

IRC 961 requires corresponding adjustments to the U.S. shareholder's basis in the CFC's stock when Subpart F income is included. Under IRC 961(a), the shareholder's basis is increased by the amount included in gross income under IRC 951(a). Under IRC 961(b), the basis is reduced (but not below zero) when a PTEP distribution is received under IRC 959(a). These basis mechanics prevent recognition of gain or loss on subsequent transactions (such as a stock sale) to the extent that the economic return has already been accounted for through current inclusions and the corresponding basis increase. Verify all IRC 961 basis mechanics against the current statutory text and IRS.gov; proposed regulations under IRC 961 have been issued and may affect the detailed mechanics for post-2025 CFC years.

Impact on the IRC 1248 Ceiling

PTEP created by Subpart F inclusions reduces the IRC 1248 E&P ceiling on a subsequent sale of CFC stock. Because PTEP represents earnings already taxed at the U.S. shareholder level, including it in the 1248 ceiling would cause double taxation. The 1248 ceiling is therefore computed on a net-of-PTEP basis. A CFC that has generated substantial Subpart F PTEP over many years will have a correspondingly smaller 1248 exposure. Practitioners modeling CFC exit scenarios should reconcile the Schedule P PTEP balance before computing the IRC 1248 amount. For a full treatment of the IRC 1248 analysis, see the companion guide: IRC 1248 CFC stock sale gain recharacterization and the E&P ceiling computation after Subpart F inclusions.

Section 9: Deemed-Paid Foreign Tax Credit Under IRC 960(a)

IRC 960(a) -- Deemed Payment of Foreign Taxes

A U.S. shareholder that includes Subpart F income under IRC 951(a) is treated under IRC 960(a) as having paid the foreign income taxes paid or accrued by the CFC that are properly attributable to the included income. This "deemed paid" treatment allows the U.S. shareholder to claim a foreign tax credit (FTC) for the CFC-level foreign taxes, reducing or eliminating the U.S. tax cost of the Subpart F inclusion to the extent the foreign taxes are creditable.

The deemed-paid FTC under IRC 960(a) is computed by reference to the CFC's foreign tax accounts maintained by PTEP group and FTC basket. The U.S. shareholder's pro-rata share of the CFC's taxes in the applicable group is deemed paid in proportion to the Subpart F income inclusion. Verify the current IRC 960(a) computation mechanics -- including the "properly attributable" standard and the PTEP group allocation rules -- against Treas. Reg. 1.960-1 through 1.960-3 (confirm current citation at IRS.gov) and current IRS.gov resources before reliance in any client matter.

FTC Basket Classification for Subpart F Income

Foreign tax credits are subject to per-basket limitations under IRC 904. The basket applicable to the deemed-paid FTC on a Subpart F inclusion depends on the category of Subpart F income:

• Passive category basket: FPHCI items that would be "passive category income" under IRC 904(d)(2)(A) -- generally, income that falls within the definition of foreign personal holding company income and is not high-taxed -- are placed in the passive basket. FTCs in the passive basket can only offset U.S. tax on passive category income. Verify the current passive basket definition against IRC 904(d)(1)(A) and Treas. Reg. 1.904-4 at IRS.gov.
• General limitation basket: FBCSI, FBCSEI, FBCORI, and insurance income inclusions generally fall in the general limitation basket. Passive income that is high-taxed may also be re-sourced to the general basket. Verify the general basket classification of each Subpart F category against IRC 904(d)(1)(B) and Treas. Reg. 1.904-4 at IRS.gov.

Proper basket classification is critical for FTC planning. An excess FTC in one basket cannot offset U.S. tax liability attributable to income in another basket. Practitioners should confirm the applicable basket for each item of Subpart F income and its corresponding IRC 960(a) deemed-paid credit before completing the FTC computation. Verify all basket rules against IRC 904 and Treas. Reg. 1.904-4 (confirm current citation at IRS.gov). For a full treatment of FTC planning and basket mechanics, see the companion guide: IRC 960 deemed-paid FTC, basket allocation, and OBBBA NCTI changes for CFC tax credit planning.

Section 10: Form 5471 Reporting and Illustrative Example

Form 5471 Schedule I -- Subpart F Income Reporting

Subpart F income is reported on Form 5471, Schedule I (Summary of Shareholder's Income From Foreign Corporation). Schedule I requires separate line-item reporting for each category of Subpart F income: FPHCI, FBCSI, FBCSEI, FBCORI, insurance income, and international boycott and illegal payment income. The Schedule I line items map directly to the IRC 954(a) category structure. Practitioners completing Schedule I should confirm that each category of income is correctly identified and that the applicable exceptions and exclusions (including the HTE election, if made) have been applied before completing the schedule.

Form 5471 instructions are updated periodically to reflect legislative changes, including OBBBA modifications. Practitioners must verify that they are using the current version of Form 5471 and its instructions for the applicable tax year at IRS.gov. The instructions for post-2025 years may reflect changes to the Subpart F reporting regime, the NCTI interaction, and the PTEP account mechanics that are not reflected in earlier versions of the form. For a comprehensive treatment of Form 5471 reporting obligations, see the companion guide: Form 5471 Schedule I Subpart F income reporting and Schedule P PTEP account mechanics.

Section 11: Outstanding Guidance and Open Questions

The following questions are unresolved or insufficiently addressed by IRS guidance as of July 2026. Each carries meaningful planning and compliance risk. Practitioners should document the uncertainty, identify the range of reasonable positions, and monitor IRS.gov actively for guidance. The absence of guidance does not mean a position cannot be taken; it means any position requires additional documentation, professional judgment, and in most cases qualified international tax counsel.

1. Coordination of the Subpart F HTE Election with the NCTI HTE Election (Unresolved as of July 2026)

No IRS guidance addresses whether the Subpart F HTE election under IRC 954(b)(4) and the NCTI HTE election under IRC 951B must be made jointly, or whether they can be made independently for the same CFC tax year. This question has significant consequences for the amount of Subpart F income and NCTI income included by U.S. shareholders in post-2025 years, and for the IRC 250 deduction available on NCTI inclusions. Monitor IRS.gov for proposed regulations, notices, or other guidance. See the warning callout in Section 7.

2. FBCSI Treatment of Digital Economy Transactions (Unresolved as of July 2026)

The FBCSI rules under IRC 954(d) were designed for tangible personal property with identifiable manufacturing locations and delivery destinations. For CFCs engaged in digital commerce, software licensing, cloud computing, or data monetization, the factual predicates for FBCSI -- where the "property" was manufactured, and where it is sold for "use, consumption, or disposition" -- may be unclear or contested. No IRS guidance specifically addresses FBCSI in digital economy contexts. Practitioners with CFC clients in digital or technology sectors should document the uncertainty and verify current IRS guidance at IRS.gov before taking a position on FBCSI applicability to digital transactions.

3. IRC 954(c)(6) Look-Through Rule Interaction with NCTI Inclusions (Unresolved as of July 2026)

The related-party look-through exception under IRC 954(c)(6) excludes qualifying dividends, interest, rents, and royalties paid between related CFCs from FPHCI, to the extent attributable to non-Subpart F income of the payor CFC. Under the post-OBBBA regime, the payor CFC's income may be NCTI income rather than Subpart F income. Whether income excluded from Subpart F under the look-through rule is then captured in the NCTI base of the recipient CFC, or escapes both regimes, is not addressed in current IRS guidance. Practitioners relying on IRC 954(c)(6) for post-2025 years should document this gap and monitor IRS.gov.

4. HTE Threshold Under a Changed U.S. Corporate Rate (Unresolved as of July 2026)

The HTE threshold under IRC 954(b)(4) is defined as 90% of the maximum U.S. corporate tax rate. If Congress modifies the U.S. corporate rate, the HTE threshold changes correspondingly. As of July 2026, the U.S. corporate rate is subject to legislative discussion. The interaction between a changed U.S. corporate rate and outstanding HTE elections made under prior-year assumptions is an open question. Practitioners advising on multi-year HTE election strategies should model the threshold sensitivity to a changed corporate rate. Verify the current rate and HTE threshold at IRS.gov.

5. Subpart F Interaction with Pillar Two GloBE Covered Taxes (Unresolved as of July 2026)

The OECD Pillar Two Global Anti-Base Erosion (GloBE) rules impose a 15% minimum tax on large multinational groups in participating jurisdictions. The interaction between foreign GloBE top-up taxes and the Subpart F high-tax exclusion -- specifically, whether a GloBE top-up tax paid by a CFC in a participating jurisdiction counts toward the effective foreign tax rate for HTE purposes -- is not addressed in final IRS guidance as of July 2026. Practitioners advising U.S. multinationals subject to Pillar Two in foreign jurisdictions should document this gap and monitor both IRS.gov and OECD guidance on GloBE covered taxes.

Section 12: Practitioner Checklist for IRC 954 Subpart F Analysis

The following checklist covers the key steps in a complete Subpart F income analysis under IRC 954. All items must be verified at IRS.gov and against applicable Treasury regulations before reliance in any client matter. This checklist is not exhaustive and does not substitute for engagement of qualified international tax counsel on complex matters.

• Confirm CFC status for the tax year. Verify that the foreign corporation is a CFC under IRC 957 for the relevant tax year: more than 50% of the total combined voting power or total value of all classes of stock is owned (directly, indirectly, or constructively) by U.S. shareholders each of whom owns at least 10%. Confirm that the CFC test is met on the required number of days during the year. Verify the CFC definition against IRC 957 and IRS.gov.
• Identify all income items and classify each under IRC 954(a). Review the CFC's income statement for the year and categorize each income item as potentially FPHCI (IRC 954(c)), FBCSI (IRC 954(d)), FBCSEI (IRC 954(e)), FBCORI (IRC 954(g)), insurance income (IRC 953), or other. Document the basis for each classification with reference to the applicable statutory and regulatory authority.
• Apply applicable exceptions within each category. For FPHCI: evaluate the same-country exception, active-conduct exception, IRC 954(c)(6) look-through rule, and banking/financing exceptions. For FBCSI: evaluate the same-country manufacturing exception, same-country sale exception, and branch rule. For FBCSEI: evaluate the same-country service exception and the related-person requirement. Document the factual basis for each exception applied. Verify all exceptions against the applicable statutory and regulatory text at IRS.gov.
• Apply the de minimis rule (IRC 954(b)(3)(A)). Compute the sum of gross foreign base company income and gross insurance income as a percentage of gross income, and compare to $1 million. If below the lesser of 5% or $1 million, no Subpart F income for the year. Document the computation. Verify the current thresholds at IRS.gov.
• Apply the full inclusion rule (IRC 954(b)(3)(B)). If the sum of gross foreign base company income and gross insurance income exceeds 70% of gross income, all gross income is Subpart F income. Document and verify the current threshold at IRS.gov.
• Evaluate the HTE election (IRC 954(b)(4)). For any item of Subpart F income subject to an effective foreign tax rate above the HTE threshold (90% of the maximum U.S. corporate rate -- verify the current threshold at IRS.gov), evaluate whether to make the annual HTE election. Document the effective foreign tax rate computation by tested unit under T.D. 9896. For post-2025 CFC years, document the open coordination question with the NCTI HTE election and do not make either election without qualified international tax counsel review. Verify the proposed regulation status of any T.D. 9896 provisions at IRS.gov.
• Compute the final Subpart F income amount and report on Form 5471 Schedule I. After applying all exceptions, threshold rules, and HTE elections, compile the final Subpart F income amount by category. Report on the current version of Form 5471 Schedule I; verify that the form version is current at IRS.gov for the applicable tax year.
• Compute the IRC 951(a) inclusion for each U.S. shareholder. Each U.S. shareholder includes its pro-rata share of the CFC's Subpart F income under IRC 951(a)(1)(A). Compute the pro-rata share based on the shareholder's ownership percentage and the number of days of CFC status during the year. Verify the pro-rata allocation rules against IRC 951(a) and applicable Treasury regulations at IRS.gov.
• Record PTEP and adjust basis under IRC 959 and 961. The Subpart F inclusion creates Section 959(c)(2) PTEP in the CFC's E&P. Update the Schedule P PTEP account and the shareholder's IRC 961(a) basis increase. Verify PTEP group and basket classification for each item of Subpart F income.
• Compute the IRC 960(a) deemed-paid FTC and determine the applicable basket. Compute the U.S. shareholder's deemed-paid FTC under IRC 960(a) for the Subpart F inclusion. Classify the credit in the correct basket (passive or general) consistent with the Subpart F income category. Complete Form 1118 (corporate) or Form 1116 (individual) as applicable. Verify all FTC mechanics at IRS.gov and against Treas. Reg. 1.960-1 through 1.960-3 (confirm current citations).
• Compute NCTI under IRC 951B after deducting Subpart F income. For CFC tax years beginning after December 31, 2025, compute NCTI on the CFC's remaining income after deducting Subpart F income (and other applicable items). Verify the ordering and deduction mechanics against the OBBBA statutory text, IRC 951B, and IRS.gov; final regulations are pending. See the companion NCTI guide.
• Document all open questions and monitor IRS.gov. For each position taken on an unsettled question -- including HTE election coordination, IRC 954(c)(6) post-OBBBA application, and digital economy FBCSI -- document the open question, the range of reasonable positions, and the basis for the position taken. Set a monitoring protocol for IRS.gov guidance updates.