Concept
A controlled foreign corporation is not only a company law label. For a U.S. citizen, green card holder or resident alien, a foreign company can create current U.S. tax inclusions, detailed annual reporting and penalties even when no dividend is paid. The practical question is never "where is the company incorporated?" — it is who owns it, how income is earned, whether U.S. shareholder thresholds are met and which forms must be filed with the U.S. return.
Compared with the personal CFC rules of other countries, the U.S. regime differs on the one point that matters most for a mobile family: it follows citizenship and green card status rather than residence, so a move abroad does not switch it off. Germany, Spain, Italy or Sweden reach an individual only while resident, and Cyprus, Switzerland, the UAE or Singapore have no rule that reaches the person at all — the sixteen-country comparison is on the CFC master guide.
The starting point is the status work in U.S. tax residency. Once a U.S. person owns a meaningful interest in a foreign corporation, the annual review should cover CFC status, Subpart F, the section 951A regime — taxed as GILTI for years through 2025 and renamed net CFC tested income (NCTI) from 2026 — previously taxed earnings, foreign tax credits and information returns. The IRS instructions for Form 5471 and Form 8992 are operating documents, not back-office paperwork.
U.S. CFC work normally requires a U.S. international tax CPA and, where ownership or prior-year compliance is sensitive, a U.S. tax attorney.
A foreign company does not defer the analysis until a dividend is paid. Fix three things first: who counts as a U.S. shareholder under the 10% and attribution rules, whether control crosses 50% during the year, and how the income splits into Subpart F, tested income and ordinary operating income. The forms follow that map.
Ownership test
A foreign corporation becomes a CFC when U.S. shareholders own more than 50 percent of the vote or value. A U.S. shareholder is generally a U.S. person with at least 10 percent vote or value. Attribution rules can pull in family ownership, entities and indirect holdings, so a founder who thinks they own "only through a holding company" may still have a U.S. filing problem.
For a practical review, prepare one cap table that shows direct ownership, indirect ownership, family ownership, options, nominee arrangements and any trusts or partnerships. The CFC answer should be tied to a date range, not only to year-end, because CFC status can arise during the year.
Who counts as a CFC now
The ownership map the control test rests on looks different from 2026. The One Big Beautiful Bill Act restored section 958(b)(4), repealed in 2017: subparagraphs (A), (B) and (C) of section 318(a)(3) are no longer applied so as to treat a U.S. person as owning stock owned by a non-U.S. person. Downward attribution is switched off for tax years of foreign corporations beginning after 31 December 2025 (sections 70353(a) and (d) of P.L. 119-21). The direct consequence: a foreign sister of a U.S. subsidiary stops being a CFC merely because the two share a foreign parent.
That does not close the question. The same section of the Act enacted section 951B, which builds a parallel regime for the same structures around two defined terms. A foreign controlled United States shareholder is a U.S. person that would be a U.S. shareholder if section 951(b) were read with "more than 50 percent" in place of "10 percent or more" and section 958(b) were applied without paragraph (4). A foreign controlled foreign corporation is a foreign corporation, other than a CFC, that would be a CFC if section 957(a) were applied to those foreign controlled United States shareholders and to section 958(b) without paragraph (4). For that pair, Subpart F applies separately from, and in addition to, its ordinary application, substituting the new terms for "United States shareholder" and "controlled foreign corporation"; the section 951A regime applies by treating both references as including the new ones (section 951B(a)).
The practical line runs through section 958(a). Constructive ownership settles status — who counts as a shareholder and what counts as the corporation. The inclusion itself under section 951(a) still requires ownership within the meaning of section 958(a), directly or through foreign entities. A U.S. subsidiary holding no actual share in the sister company acquires the status without the inclusion; a U.S. co-owner with a real stake acquires both. Section 951B carries the same effective date — tax years of foreign corporations beginning after 31 December 2025 — and the Act states expressly that the amendments create no inference for earlier years (section 70353(f)). How the same question is answered under other regimes is in the CFC master guide.
Income inclusions
Subpart F can tax certain categories of passive, related-party or base-company income before distribution. The section 951A regime taxes tested income on top of that. It was reported as GILTI for years through 2025 and, under the One Big Beautiful Bill Act, applies as net CFC tested income (NCTI) for tax years beginning after 31 December 2025 — the IRS summarises the change on its One Big Beautiful Bill provisions page. The mechanics carry over: tested income is reported through Form 8992, and the section 250 deduction is computed on Form 8993 where available, at a reduced percentage from 2026.
Individual U.S. shareholders should not assume they receive the same mechanics as a domestic corporation. A section 962 election can change the current calculation but also change later distribution treatment. A CFC review should classify income before the U.S. return is prepared: operating income, passive investment income, related-party sales or services, royalties, financing income, tested income, tested loss and foreign taxes. The answer is usually driven by accounting detail, not by the legal name of the entity.
NCTI in numbers
For tax years beginning after 31 December 2025 the section 951A regime runs on three new parameters. The section 250 deduction drops from 50 to 40 percent, so the corporate effective rate is 21% × (1 − 0.40) = 12.6%, and with the foreign tax credit haircut the commonly quoted range is 12.6–14%. The haircut itself is softened: 90 percent of foreign tax is creditable instead of 80, which puts the break-even point — where residual U.S. tax reaches zero — at roughly a 14% foreign rate.
The sharpest change is the repeal of QBAI: the 10 percent deemed tangible income return is gone, so the entire tested income enters the base rather than the excess over a routine return on tangible assets. For the owner of a personal investment company, which rarely had tangible assets anyway, the outcome is direct: NCTI is almost always switched on, and planning shifts from asset structure to the section 962 election and the high-tax exception.
One adjacent parameter of the same Act reaches the same owner wherever the US entity makes deductible payments to related foreign parties: the base erosion and anti-abuse tax (BEAT) rate is fixed at 10.5% for tax years beginning after 31 December 2025, instead of the rise to 12.5% scheduled under the previous text.
The other branch of the section 250 deduction runs on its own numbers. FDII is renamed FDDEI — foreign-derived deduction eligible income — and the section 250(a)(1)(A) deduction drops from 37.5 to 33.34 percent, so the effective rate is 21% × (1 − 0.3334) ≈ 14%. The scheduled step-down to 21.875 and 37.5 percent from 2026 is gone with the repeal of section 250(a)(3). Deduction eligible income now excludes income and gain from the sale or other disposition of intangible property within the meaning of section 367(d)(4) and of any other property subject to depreciation, amortisation or depletion in the seller's hands, for dispositions occurring after 16 June 2025, deemed dispositions and section 367(d) transactions included (section 250(b)(3)(A)(i)(VII); section 70322(a) of P.L. 119-21). A U.S. exporting structure therefore runs two rates side by side — 12.6% on NCTI and 14% on FDDEI — and a cross-border sale of a depreciable or intangible asset no longer reaches the second.
High-tax exception
Subpart F and the section 951A regime share one safety valve — the high-tax exception. The election is available when the effective foreign rate on the relevant income exceeds 90 percent of the maximum section 11 rate: at 21%, the threshold is 18.9%. For Subpart F the rule sits in section 954(b)(4); the 2020 final regulations (TD 9902) extended it to tested income: the election is annual, the rate is tested per tested unit, and it must be applied consistently across the CFC group. In practice, 15–17% jurisdictions — Hong Kong, Singapore — do not reach the threshold, so NCTI cannot be switched off there. Pillar Two changes the picture: a QDMTT counts toward the effective rate as an ordinary foreign income tax, unlike IIR or UTPR top-ups, so in a QDMTT jurisdiction local tax plus top-up, measured on the U.S. base, can in some fact patterns reach 18.9%. OBBBA left the threshold unchanged.
Reporting map
Form 5471 is the central reporting form for many foreign corporation cases. Depending on the facts, the same structure may also trigger other returns, and a PFIC analysis can run in parallel where the company holds funds or ETFs.
Direct CFC reporting
Form 5471 for the corporation, Form 8992 for tested income and Form 8993 for the section 250 deduction where it applies.
Related entity returns
Form 926 for transfers to a foreign corporation, Form 8858 for foreign disregarded entities or branches, and Form 8865 for foreign partnerships. Detail in foreign entity forms.
Investment overlap
If the foreign entity owns funds, ETFs or investment companies, the analysis in PFIC and Form 8621 should run alongside the CFC review.
These are not optional disclosures. Late or incomplete international information returns can carry penalties separate from the income tax itself.
Form 5471 filer categories and the penalty stack
The IRS instructions sort filers into five categories. Category 1 (1a/1b/1c) covers U.S. shareholders of section 965 specified foreign corporations; category 2, officers and directors of a foreign corporation in which a U.S. person has acquired a 10 percent stake; category 3, the acquirer crossing the 10 percent threshold in either direction; category 4, a U.S. person with control above 50 percent; category 5 (5a/5b/5c), U.S. shareholders of a CFC, with 5b and 5c isolating unrelated and constructive shareholders of foreign-controlled CFCs who qualify for reduced reporting.
That perimeter is now moving. The definition of a foreign-controlled CFC in the 12/2025 revision of the instructions rests squarely on downward attribution: a corporation that would not be a CFC without applying subparagraphs (A), (B) and (C) of section 318(a)(3) to treat a U.S. person as owning stock owned by a foreign person. Restored section 958(b)(4) removes the basis for that definition from tax years of foreign corporations beginning after 31 December 2025: such a company ceases to be a CFC at all, and the comparable population moves to section 951B. The current instructions do not yet reflect the new perimeter because they cover earlier years; the category should be checked against the form revision for the year actually being filed.
The penalty stack: $10,000 per form per year; if the form is still missing 90 days after IRS notice, another $10,000 per 30-day period, up to an additional $50,000, plus a possible 10 percent cut to the foreign tax credit. The real lever is not the money: under section 6501(c)(8) the statute of limitations on the entire return does not close until the form is filed — the year stays open for audit in full. Reasonable cause narrows the open statute to the related items and can lift the penalty, but requires showing ordinary business care and prudence.
Planning tools
Legal planning usually starts with classification and cash-flow discipline, not with a new structure. The common tools are check-the-box classification through Form 8832, ownership restructuring before a U.S. person joins the cap table, section 962 elections for individuals, domestic holding companies in selected cases, dividend timing, foreign tax credit modeling under Publication 514, and avoiding PFIC assets inside or alongside the company.
One rule in that set has stopped being temporary. The section 954(c)(6) look-through takes dividends, interest, rents and royalties received from a related CFC out of foreign personal holding company income, to the extent they are attributable or properly allocable to income of the payor that is neither Subpart F income nor income effectively connected with a U.S. trade or business. The rule had been extended repeatedly since 2006, most recently to 1 January 2026; OBBBA struck that cut-off from section 954(c)(6)(C) and made the rule permanent (section 70351 of P.L. 119-21). Intragroup financing and licensing between CFCs no longer turn on the next extension. The exception stays in place: the rule does not apply to interest, rent or royalty that creates or increases a deficit capable of reducing the Subpart F income of the payor or another CFC under section 952(c) (section 954(c)(6)(B)).
Each tool has a tradeoff. A check-the-box election may create a deemed transaction. A U.S. corporation may improve CFC mechanics but add a second level of tax. A section 962 election may lower current tax but complicate later distributions. The planning memo should show the tax result, reporting forms, bank and KYC impact, and exit consequences.
Some of those same moves read to the IRS as an attempt to move profit outside the CFC rules. The reason is evidentiary: the fact pattern around them tends to look the same. The table collects four markers that are no offence in themselves but shift the burden of explanation onto the taxpayer.
| Marker | Why it reads that way | What answers it |
|---|---|---|
| A check-the-box election made on the eve of a sale or a large distribution | The deemed liquidation falls in the same period as the transaction, and the whole step collapses into one pre-planned transaction with section 367 and section 1248 consequences | A business reason for the election recorded before negotiations; a real interval between Form 8832 and the event; a computation showing the tax on both routes |
| U.S. shareholder ownership trimmed to just under 50% | The section 957(a) test is applied on any day of the tax year and counts constructive ownership under section 958(b), so a tidy 49% on the cap table is retested against family, trusts, partnerships and options | A dated ownership chart with constructive interests computed; evidence that the co-owner is unrelated and genuinely carries the risk |
| A transfer to a non-resident that leaves the economics unchanged | A buy-back option returns the shares to the transferor under the option rules of section 318(a)(4) applied through section 958(b), so the interest never leaves | Arm's-length price and actual settlement; no put or call obligations and no side letters; votes and downside risk genuinely transferred |
| A structure whose entire pre-tax return is close to zero | The codified economic substance doctrine in section 7701(o) requires both a meaningful change in economic position and a substantial non-tax purpose; the section 6662(b)(6) penalty is strict liability at 20 percent and doubles where the facts are not disclosed on the return (section 6662(i)) | Reasonably expected pre-tax profit, substantial in present value terms against the expected tax benefit (section 7701(o)(2)); disclosure on the return, which removes the doubling |
The annual review
The annual review moves from ownership to the numbers, and each line has to be settled before the U.S. return is prepared.
| Review | What it establishes |
|---|---|
| Ownership chart | Direct, indirect and constructive ownership |
| Group inventory | Every foreign corporation, disregarded entity, branch and partnership in the group |
| CFC status | Whether each foreign corporation is a CFC at any point during the year |
| Form map | Forms 5471, 8992, 8993, 926, 8858 and 8865, mapped before filing season |
| Income classification | Operating, passive, related-party, Subpart F and tested income |
| Accounts | Foreign statutory accounts reconciled to U.S. tax reporting numbers in U.S. dollars |
| Previously taxed earnings | The running record that keeps a later distribution from being taxed twice |
| Compliance file | Minutes, intercompany agreements, transfer-pricing support and bank evidence held in one place |
The mistakes are what a skipped line looks like a year later.
Common mistakes
- Looking only at dividends and ignoring current inclusions.
- Using local statutory accounts without U.S. tax adjustments.
- Missing constructive ownership through family, trusts or entities.
- Treating a foreign LLC-like entity as transparent without a U.S. classification analysis.
- Filing Form 5471 but missing related Forms 8992, 926, 8858 or 8865.
- Holding foreign funds or ETFs in the same structure without PFIC review.
- Making a section 962 election without modeling future cash distributions.
Advisor trigger
Use a U.S. international tax specialist before formation, investment, relocation, green card issuance, large dividend payments, share transfers, trust contributions, liquidation or expatriation planning. If prior years were missed, start with enforcement and cleanup before contacting banks or filing amended returns piecemeal.
Q/A
When does a foreign company become a CFC
When U.S. shareholders own more than 50 percent of the vote or value. A U.S. shareholder is generally a U.S. person with at least 10 percent vote or value, and attribution rules can count family, entity and indirect ownership. Control can arise mid-year, so the test is tied to a date range, not only to year-end. For tax years of foreign corporations beginning after 31 December 2025, restored section 958(b)(4) switches off downward attribution from a foreign person to a U.S. person, while the parallel section 951B regime restores inclusions for foreign controlled structures wherever the U.S. person owns stock within the meaning of section 958(a).
Is GILTI still called GILTI
For tax years through 2025 the section 951A inclusion is GILTI. Under the One Big Beautiful Bill Act it applies as net CFC tested income (NCTI) for tax years beginning after 31 December 2025. The reporting mechanics carry over to Form 8992, with the section 250 deduction on Form 8993 at a reduced percentage from 2026.
Does the CFC regime tax retained earnings before a dividend
Yes. Subpart F and the section 951A regime can create current U.S. inclusions even when the company pays no dividend. Retained earnings do not defer the analysis. Previously taxed earnings should be tracked so a later distribution is not taxed twice.
What does a section 962 election change
It lets an individual U.S. shareholder be taxed on certain inclusions more like a domestic corporation, which can lower current tax. It also changes how later distributions are treated, so it should be modeled against future cash flow before it is made.