Do I need a separate Form 5471 for each UK subsidiary of my holding company?

Yes. The Instructions for Form 5471 require a separate Form 5471 and all applicable schedules for each applicable foreign corporation. If you own a UK holding company that owns two subsidiaries, you are usually a filer for all three companies through indirect ownership under section 958(a), so three returns are attached to your Form 1040. Penalties are also assessed per foreign corporation and per annual accounting period, so a missing subsidiary return is a separate failure.

Is a dividend from my UK subsidiary to my UK holding company taxable in the US?

Usually not at that stage. Dividends are normally subpart F income, but a dividend between related UK companies generally falls within the same-country exception in section 954(c)(3) or the related-CFC look-through rule in section 954(c)(6), and related-party dividends are excluded from tested income. The dividend must still be reported: on the paying company's Schedules R, J and M, and on the holding company's Schedule M, with any previously taxed element tracked through Schedules J and P.

Can UK group relief reduce my US tax on my UK companies?

Not directly. Group relief is a UK corporation tax mechanism between companies in a 75 percent group, and it has no counterpart for a US individual who owns the group. Each Form 5471 computes earnings and profits for its own company, so one subsidiary's loss does not reduce another's E&P. Group relief does change where UK tax is paid, which affects each company's foreign taxes and E&P, and US results are netted across CFCs only in the shareholder-level NCTI calculation.

Can a dormant UK subsidiary use the summary Form 5471 filing?

It can if it meets the dormant foreign corporation definition in section 3 of Rev. Proc. 92-70 for the whole annual accounting period. The summary return is page 1 of Form 5471 only, labelled Filed Pursuant to Rev. Proc. 92-70 for Dormant Foreign Corporation, with the filer details, tax year, annual accounting period and items 1a to 1d. Being dormant for HMRC or for Companies House does not by itself prove the company qualifies for the US procedure.

My UK subsidiary has a 31 March year end. Which period does its Form 5471 cover?

Form 5471 reports the foreign corporation's tax year ending with or within your tax year. If a US shareholder is treated as owning more than 50 percent of the company, it is a specified foreign corporation, and section 898 generally requires its US tax year to be the majority US shareholder's year, usually the calendar year for an individual. The preparer then builds calendar-year figures from management accounts and reconciles them to the two UK statutory periods.

Does selling my UK holding company trigger US tax on the subsidiaries' profits?

It can. Under section 1248, gain on selling shares in a foreign corporation can be treated as a dividend where you held 10 percent or more of the voting power while it was a CFC during the previous five years. Section 1248(c)(2) brings the earnings and profits of lower-tier subsidiaries into that calculation, so every subsidiary's E&P history matters. The sale also brings Category 3 reporting and Schedule O into the final-year filing.

Form 5471 for a Tiered UK Holding Company Structure

Form 5471 for a tiered UK holding company means preparing one complete Form 5471, with its own set of schedules, for every UK company in the chain for which you are a filer, not a single return for the group. If you are a US citizen who owns a UK holding company (HoldCo), and HoldCo owns one or more trading or investment subsidiaries (OpCos), the indirect ownership rules generally make you a filer for each of those subsidiaries as well as for HoldCo. Each return is attached to your Form 1040 and filed by that return's due date, including extensions.

This is the structure we see most often among US business owners and investors in the UK: a HoldCo above a trading company, perhaps a property or investment company alongside it, and sometimes a further sub-tier created by an acquisition. UK accountants often prepare group accounts and treat the structure as one economic unit. The IRS does not. For US information reporting, each company is a separate foreign corporation with its own earnings and profits (E&P), its own functional currency, its own related-party transactions and its own penalty exposure. This guide works through the rules tier by tier: how many returns are due, how ownership pulls the subsidiaries in, which filer categories and schedules apply to each company, how an intercompany dividend moves through the E&P and previously taxed earnings accounts, and where UK concepts such as group relief simply do not translate.

How many returns does Form 5471 for a tiered UK holding company require?

The Instructions for Form 5471 at https://www.irs.gov/instructions/i5471 are explicit: complete a separate Form 5471 and all applicable schedules for each applicable foreign corporation. The IRS repeats the point on its page for taxpayers related to foreign corporations at https://www.irs.gov/individuals/international-taxpayers/certain-taxpayers-related-to-foreign-corporations-must-file-form-5471, which states that a complete and separate form and all applicable schedules must be filed for each foreign corporation. A HoldCo with two OpCos is therefore three returns. A HoldCo with two OpCos and a further company beneath one of them is four.

The count matters because the penalties are counted the same way. Under the current instructions, failing to furnish the information required by section 6038(a) carries a $10,000 penalty for each annual accounting period of each foreign corporation. If the failure continues more than 90 days after the IRS mails a notice, a further $10,000 applies for each 30-day period or part of one, up to a maximum of $50,000 for each failure, and foreign tax credits can be reduced as well. A missing subsidiary return is a separate failure that the HoldCo return does not cure. Separately, section 6501(c)(8), at https://www.law.cornell.edu/uscode/text/26/6501, keeps the assessment period open until three years after the required information is furnished. Where the failure is due to reasonable cause and not willful neglect, that extension is limited to the items related to the failure.

Where more than one US person must report the same company, for example a US couple who both hold HoldCo shares, the multiple filers rule in the instructions lets one person file for others who have the same or lesser filing requirements, provided each person identified attaches the required statement to their own return. That can reduce paperwork between owners. It never reduces the number of companies that must be reported.

How do indirect and constructive ownership pull the subsidiaries in?

Two ownership rules do the work, both in section 958 at https://www.law.cornell.edu/uscode/text/26/958. Section 958(a) covers direct and indirect ownership: stock owned by a foreign corporation is treated as owned proportionately by its shareholders. If you own 100 percent of HoldCo and HoldCo owns 100 percent of OpCo, you indirectly own 100 percent of OpCo. Section 958(a) ownership is the measure that drives income inclusions, because your pro rata share of a controlled foreign corporation's income is computed by reference to stock you own within the meaning of section 958(a).

Section 958(b) is the constructive ownership rule used to decide status, meaning whether you are a US shareholder and whether each company is a controlled foreign corporation (CFC). It applies the section 318 attribution rules with modifications. Two of them matter most in a UK group. First, the 50 percent threshold for attributing a corporation's stock up to its shareholders is replaced with 10 percent. Second, when those attribution rules are applied, a corporation that owns more than 50 percent of the voting power of another corporation is treated as owning all of that corporation's voting stock. A third rule is often decisive in UK family companies: section 958(b)(1) stops stock owned by a nonresident alien individual, such as a non-US spouse, from being attributed to a US citizen or resident.

An illustration shows why the two measures differ. Assume you own 60 percent of HoldCo, an unrelated UK resident owns the other 40 percent, and HoldCo owns 80 percent of OpCo. Under section 958(a) you indirectly own 48 percent of OpCo (60 percent of 80 percent), and that is the percentage used for any income inclusion. For the status tests, HoldCo is treated as owning all of OpCo's voting stock because it holds more than 50 percent, and 60 percent of that is attributed to you. You are a US shareholder of OpCo on either measure, and OpCo is a CFC because a US shareholder is treated as owning more than 50 percent of its voting power.

For the Category 4 control test, the instructions add a chain rule of their own: a person in control of a corporation that in turn owns more than 50 percent of the voting power or value of another corporation is also treated as in control of that other corporation. The IRS example runs a 51 percent holding down three tiers and concludes that the bottom company is controlled by the top shareholder. One 2025 change is worth noting for completeness. Section 958(b)(4), which prevents stock owned by a foreign person being attributed downward to a US person, has been restored for taxable years of foreign corporations beginning after 31 December 2025. It rarely changes the answer where a US individual owns the UK group from the top, but it can matter where HoldCo has a non-US corporate co-owner.

Which filer categories apply to HoldCo and to each subsidiary?

Filer categories are determined company by company. It is common for the same person to fall into a different category for different companies in the same group, or to tick more than one box on a single return. Using the definitions in the current instructions, these are the categories that come up in a UK group owned by a US individual:

Category 4: a US person who had control of the foreign corporation during its annual accounting period, meaning more than 50 percent of the total combined voting power or more than 50 percent of the total value, at any time during that person's tax year. Control through the chain counts.
Category 5a: a US shareholder, meaning a person owning 10 percent or more of the vote or value directly, indirectly or constructively, who owned stock in the company on the last day of the year in which it was a CFC. Where you meet both Category 4 and Category 5a, the instructions tell you to check only Category 4.
Category 3: a US person who acquires stock that takes them to the 10 percent threshold, or who disposes of enough stock to fall below it. This is the category that picks up a new subsidiary formed or bought by HoldCo.
Category 2: a US citizen or resident who is an officer or director of the foreign corporation in a year in which a US person acquires stock meeting the 10 percent requirement. A US director of an OpCo can be caught in an acquisition year without owning OpCo shares personally.

For a US individual who owns 100 percent of HoldCo, the usual result is Category 4 for HoldCo and Category 4 for each wholly or majority-owned subsidiary, with Category 3 added in any year a company is formed, acquired or sold. Where your shareholding in HoldCo is 50 percent or less, Category 4 falls away and the analysis turns on whether each company is a CFC once all US shareholders are counted.

Which schedules are prepared for each company in the chain?

The filing requirements chart in the instructions sets the schedules by category. For a Category 4 filer, the chart calls for the following, and each is prepared separately for each company:

Page 1 identifying information, Schedule A (the company's stock) and Schedule B Parts I and II (US shareholders and direct shareholders). For an OpCo, the direct shareholder in Part II is HoldCo, not you.
Schedule C (income statement, in functional currency under US GAAP) and Schedule F (balance sheet, in US dollars).
Schedule E (foreign income taxes) with Schedule E-1 (the cumulative balance of foreign income taxes by separate category).
Schedule G (other information, including a question on branches or other units with a different functional currency) and Schedule G-1 (cost sharing arrangements).
Schedule H (current E&P) and Schedule I (summary of your income from the company).
Schedule I-1 (CFC-level information you use for the shareholder-level GILTI, now NCTI, calculation) and Schedule Q (income, deductions, taxes and assets by CFC income group).
Schedule J (accumulated E&P), Schedule P (previously taxed E&P in your annual PTEP accounts), Schedule M (transactions with related persons) and Schedule R (distributions).

Schedule H-1 applies only to corporate shareholders subject to the corporate alternative minimum tax, so it is not relevant to an individual owner. Schedule O is not on the Category 4 list; it arrives through Category 3 (Part II) or Category 2 (Part I) in years when shares are acquired or disposed of, or a company is organised or reorganised. Each company also needs its own reference ID number, used consistently from year to year, and for a CFC that number must match the one used for the same company on Schedule A of Form 8992.

In a tiered group, the schedules that do the most work are the ones that capture how the companies deal with each other. The Schedule M form itself says a separate Schedule M is completed for each CFC, and its columns separate transactions with the US filer, with domestic entities the filer controls, with any other foreign corporation or partnership controlled by the filer, and with 10 percent US shareholders. In a UK group owned by a US individual, almost every intercompany flow lands in the column for other foreign corporations controlled by the filer: dividends paid by OpCo and received by HoldCo, management charges, interest on intercompany loans, and the largest outstanding loan balances during the year. The same transaction therefore appears twice, once on the payer's Schedule M and once on the recipient's, and the two must agree after translation at each company's average exchange rate for its tax year.

How is an upstream dividend from OpCo to HoldCo tracked?

An upstream dividend is the transaction that most often goes wrong in a tiered UK filing, because it has to be followed through at least three returns. Start with its character in HoldCo's hands. Dividends are foreign personal holding company income under section 954(c)(1)(A), which would ordinarily make them subpart F income. Two exceptions usually apply to a UK-to-UK dividend inside a group. The same-country exception in section 954(c)(3)(A) excludes dividends received from a related corporation organised in the same country as the recipient CFC that has a substantial part of the assets used in its trade or business located in that country. The look-through rule in section 954(c)(6) excludes dividends, interest, rents and royalties received from a related CFC to the extent they are attributable or properly allocable to income of the payer that is neither subpart F income nor income effectively connected with a US trade or business.

The look-through rule spent years as a temporary provision renewed by extender legislation. The current statutory text at https://www.law.cornell.edu/uscode/text/26/954 carries no expiry date in its application rule, section 954(c)(6)(C), which applies it to taxable years of foreign corporations beginning after 31 December 2005. It also reaches intercompany interest and royalties, which matters where HoldCo charges OpCo for funding or brand use. Note the limit on the same-country exception: under section 954(c)(3)(B) it does not apply to interest, rent or royalties to the extent they reduce the payer's subpart F income.

The dividend also stays out of HoldCo's tested income, because section 951A excludes dividends received from a related person, as defined in section 954(d)(3), from tested income. The practical outcome in most UK groups is that the dividend is neither a subpart F inclusion nor NCTI at HoldCo level. It is an E&P event, and that is where the schedules come in.

OpCo's return: the dividend goes on Schedule R, which the instructions describe as the schedule for distribution information required by sections 245A, 959 and 986(c). It reduces OpCo's accumulated E&P on Schedule J as an actual distribution, and the instructions confirm the ordering: an actual distribution comes first out of previously taxed E&P (PTEP), if any, and then out of the section 959(c)(3) balance of E&P not yet taxed. It also appears on OpCo's Schedule M as a dividend paid.
HoldCo's return: the dividend appears on Schedule M as a dividend received, but only to the extent it is not a distribution of previously taxed income, because the Schedule M dividends line excludes PTEP distributions. Any PTEP element goes on HoldCo's Schedule J, which has a dedicated line for E&P attributable to PTEP distributions from lower-tier foreign corporations, and into Schedule P, whose PTEP columns mirror Schedule J.
Your return: when HoldCo pays you, section 959(a) excludes PTEP from your gross income, HoldCo's Schedule R shows the split between PTEP and other E&P, and any foreign currency gain or loss on a PTEP distribution recognised under section 986(c) is reported, for an individual, as other income on Schedule 1 (Form 1040), using the US dollar basis tracked in Part II of Schedule P.

The rule that stops PTEP being taxed twice on its way up is section 959(b), at https://www.law.cornell.edu/uscode/text/26/959: E&P attributable to amounts already included in a US shareholder's income under section 951(a) are not included again in the income of another CFC in the same chain of ownership. The instructions illustrate it with a three-tier example in which the bottom company distributes previously taxed subpart F income to the middle company, and the middle company's Schedule J records the PTEP distribution received and the withholding tax on it. In a UK group the typical source of PTEP is an earlier year's GILTI inclusion from a trading OpCo, and the most common error we see is that HoldCo's Schedule J and Schedule P never pick it up, so the PTEP is lost by the time HoldCo pays you.

On the UK side, HMRC's International Manual at https://www.gov.uk/hmrc-internal-manuals/international-manual/intm651020 explains that the distribution exemption is designed so that the great majority of dividends received by UK companies are exempt, with separate rules for small companies and for all other companies. The upstream dividend is therefore usually tax-neutral in the UK too, which is exactly why it is easy to forget that it still has to be tracked through three US returns.

Why does UK group relief have no counterpart for a US individual shareholder?

UK group relief lets companies in a group surrender certain losses and other amounts, including trading losses and excess management expenses, to other group members. HMRC's Company Taxation Manual at https://www.gov.uk/hmrc-internal-manuals/company-taxation-manual/ctm80151 sets the core relationship: one company must be a 75 percent subsidiary of the other, or both must be 75 percent subsidiaries of a third company, looking at ordinary share capital held directly or indirectly together with entitlement to profits and assets. It is a relationship between companies. That is one of the main reasons UK owners insert a HoldCo: two companies owned directly by the same individual are not in that relationship with each other, because neither is a subsidiary of the other and there is no third company above them.

There is no US equivalent for a US individual who owns the group. Each Form 5471 computes E&P for its own company. A loss in one OpCo does not reduce the E&P or the subpart F income of another, and it does not appear on HoldCo's return except through the value of HoldCo's shareholding. The only place US rules net results across your CFCs is the shareholder-level NCTI calculation, where your pro rata shares of tested income and tested loss are aggregated. We cover that aggregation across Form 5471 and Form 8992 in a separate article, so it is only flagged here.

Group relief still reaches the US returns indirectly. It changes which UK company pays corporation tax and how much, so it changes the foreign taxes on each company's Schedule E, each company's effective UK tax rate, and each company's E&P after tax. Where companies pay each other for surrendered losses, that payment is an intercompany cash flow like any other and needs to be reflected consistently in both companies' accounts and related-party reporting. In the returns we prepare, we ask the UK accountants for the group relief claims and surrenders company by company, not just the group tax charge.

What is the functional currency of each company in the chain?

Functional currency is determined for each company on its own facts. Section 985, at https://www.law.cornell.edu/uscode/text/26/985, defines the functional currency of a qualified business unit (QBU) as the currency of the economic environment in which a significant part of its activities are conducted and which it uses to keep its books and records. Section 989 defines a QBU as any separate and clearly identified unit of a trade or business that maintains separate books and records. Most UK companies are sterling companies, and item 1h on page 1 of each Form 5471 takes the ISO 4217 code, GBP. But a HoldCo whose only activity is holding a US dollar portfolio, or an OpCo that trades and keeps its books in dollars or euros, can have a different functional currency from the rest of the group.

The choice is not cosmetic. Schedule C is reported in functional currency under US GAAP. Schedule M is translated at the average exchange rate for the company's tax year. Every rate on the form is reported under the divide-by convention, as units of foreign currency per US dollar rounded to at least four decimal places. When PTEP moves from a sterling OpCo to HoldCo and then to you, foreign currency gain or loss can arise under section 986(c). Schedule G also asks whether the company has a QBU, such as an overseas branch, with a functional currency different from its owner, in which case Form 8964-TRA is attached.

What happens when a subsidiary has a non-coterminous UK accounting period?

UK company law expects group year ends to line up. Section 390(5) of the Companies Act 2006, at https://www.legislation.gov.uk/ukpga/2006/46/section/390, requires the directors of a parent company to secure that each subsidiary undertaking's financial year coincides with the parent's, except where in their opinion there are good reasons against it. In practice we still see OpCos with a different year end from HoldCo, usually because a company was acquired with its own year end and never realigned.

For Form 5471, the starting rule is that you report the foreign corporation's tax year that ends with or within your own tax year. But a UK company that is a specified foreign corporation, meaning a CFC in which a US shareholder is treated as owning more than 50 percent of the vote or value, has its US tax year dictated by section 898, at https://www.law.cornell.edu/uscode/text/26/898, which generally requires the majority US shareholder's year. Most US individuals file on a calendar year, so a UK OpCo with a 31 March statutory year end will usually have a calendar US tax year whatever its UK accounts say. The former election to use a year beginning one month earlier is not available for specified foreign corporation tax years beginning after 30 November 2025.

The practical consequence is that the US return for that OpCo cannot simply be lifted from its statutory accounts. In the returns we prepare, we build calendar-year figures from monthly management accounts or trial balances, reconcile them to the two UK statutory periods that straddle the US year, and keep the bridge on file. The same reconciliation feeds the E&P roll-forward on Schedule J, whose opening balances must equal the prior year's closing balances.

On the UK side, non-coinciding periods complicate group relief rather than prevent it. HMRC's guidance at https://www.gov.uk/hmrc-internal-manuals/company-taxation-manual/ctm80210 explains that relief is computed by reference to the overlapping period, with profits and losses time-apportioned to that period unless that would give an unjust or unreasonable result. One mismatched year end therefore produces two separate apportionment exercises, one for HMRC and one for the IRS, and they use different periods.

What changes when HoldCo forms or buys a new subsidiary mid-year?

A new subsidiary, whether incorporated by HoldCo or bought from a third party, usually makes you a Category 3 filer for that company, because you acquire stock indirectly through HoldCo that meets the 10 percent threshold. Category 3 brings Schedule O Part II, which reports acquisitions, dispositions and organisations or reorganisations that occurred during your tax year; its acquisition section has a separate column for shares acquired indirectly within the meaning of section 958(a)(2). Category 3 filers also attach a statement covering the company's indebtedness to related persons and the subscribers to its shares.

From its first year, the new company needs its own reference ID number. If HoldCo buys an existing UK company and a section 338 election is made, the instructions require Form 8883 to be attached to the first Form 5471 for the new target and, where the election is made for a foreign purchasing corporation that is a CFC, Form 8023 to be attached to that purchasing corporation's Form 5471 for the year that includes the acquisition date. An acquired company with a year end different from the group's also raises the section 898 point above from day one.

The income side changed in 2025. For taxable years of foreign corporations beginning after 31 December 2025, section 951(a)(2), at https://www.law.cornell.edu/uscode/text/26/951, measures a shareholder's pro rata share by reference to the period of the CFC year during which the shareholder owned the stock, was a US shareholder and the corporation was a CFC. For an acquisition part way through the year, that puts weight on cut-off: the completion accounts need to support a clean split of the target's income before and after the acquisition date.

A worked example: HoldCo, a trading OpCo and a dormant OpCo

Illustration only. A US citizen living in London owns 100 percent of a UK HoldCo, which owns 100 percent of two UK subsidiaries: TradeCo, an active trading company that keeps sterling books with a 31 March year end carried over from before HoldCo was inserted, and IdleCo, which sold its only asset years ago, has had no transactions since and is kept for its name. HoldCo has a 31 December year end and its only income in the year is a dividend from TradeCo. All three companies are UK resident and use sterling. For the US calendar year, the filing looks like this:

Three Forms 5471 attached to the owner's Form 1040. Each checks Category 4; Category 5a is also met but, per the instructions, only Category 4 is checked.
HoldCo: the full Category 4 schedule set. Schedule M shows the dividend received from TradeCo in the column for other foreign corporations controlled by the filer, to the extent it is not PTEP. Schedule J and Schedule P pick up any PTEP element. Schedule I-1 shows HoldCo's own tested income or loss, which excludes the related-party dividend.
TradeCo: the full Category 4 schedule set, prepared on a calendar-year US tax year under section 898 even though its UK accounts end on 31 March, so the preparer bridges two sets of UK figures. Schedule R and Schedule J show the dividend paid, first out of any PTEP. Schedule M shows the same dividend as paid to HoldCo, and Schedule I-1 carries TradeCo's tested income.
IdleCo: if it meets the definition of a dormant foreign corporation in section 3 of Rev. Proc. 92-70 for the whole annual accounting period, the summary procedure described in the instructions applies: page 1 of Form 5471 only, labelled Filed Pursuant to Rev. Proc. 92-70 for Dormant Foreign Corporation, completing the filer information, items A through C and the tax year, the company's annual accounting period, and items 1a through 1d.
HoldCo itself is not a realistic candidate for the dormant procedure: it received a dividend in the year and holds an active trading subsidiary.

The UK picture runs in parallel but on different logic. TradeCo and HoldCo file Company Tax Returns. The dividend is generally exempt in HoldCo's hands under the distribution exemption. If HoldCo has excess management expenses, it may be able to surrender them to TradeCo under group relief, apportioned to the overlapping period because the year ends differ. IdleCo is usually dormant for Corporation Tax if it has stopped trading and has no other income, as GOV.UK explains at https://www.gov.uk/dormant-company/dormant-for-corporation-tax, but it must still file annual accounts and a confirmation statement with Companies House, and a Company Tax Return if HMRC sends a notice to deliver one. Dormant for HMRC, dormant for Companies House and dormant under Rev. Proc. 92-70 are separate tests, and meeting one does not prove the others.

None of that UK netting reaches the US returns. HoldCo's expenses reduce HoldCo's E&P only, and TradeCo's E&P is computed on its own. The three US returns are separate computations tied together only by the intercompany entries, which must agree across the Schedules M, R, J and P of the paying and receiving companies.

What documents does the preparer need from the UK accountants for each tier?

A tiered filing is only as good as the company-level information behind it. For each company in the chain, we ask for:

Statutory accounts for every company, not only consolidated group accounts, plus trial balances or monthly management accounts wherever a year end differs from the US tax year.
Corporation tax computations and returns for each company, including group relief claims and surrenders and any payments made for group relief.
An intercompany schedule for the year, agreed on both sides: dividends with declaration and payment dates and the supporting board minutes, loan balances including the highest balance during the year, interest, management charges and recharges.
Share registers, allotments and Companies House filings for any company whose share capital changed, and the share purchase agreement and completion accounts for any acquisition.
Fixed asset registers and details of the accounting policies needed to move each company's figures from UK GAAP to US GAAP for Schedules C and F.
Last year's Forms 5471 for every company, because Schedule J opening balances must equal last year's closing balances and each PTEP account carries forward.
Confirmation of each company's functional currency and of any branches or activities outside the UK.

The preparer also needs one item the UK accountants rarely produce, an ownership map showing each tier with percentages by vote and value, which our separate guide to Form 5471 ownership charts for UK groups covers in detail.

What are the US consequences of selling a subsidiary versus selling HoldCo shares?

The US result of an exit depends on which tier is sold. If you sell HoldCo shares, section 1248, at https://www.law.cornell.edu/uscode/text/26/1248, can recharacterise part of your gain as a dividend. It applies where you owned 10 percent or more of the voting power at any time during the five years before the sale while the company was a CFC, to the extent of the relevant earnings and profits. Section 1248(c)(2) extends that calculation to the earnings of lower-tier subsidiaries, so the E&P history of every OpCo, not only HoldCo, is needed to compute the dividend element. A disposal also brings Category 3 and Schedule O into the final-year filing.

If HoldCo sells an OpCo instead, the seller is a CFC. Section 964(e), at https://www.law.cornell.edu/uscode/text/26/964, treats a CFC's gain on selling stock in another foreign corporation as a dividend to the same extent section 1248 would if the CFC were a US person. How that deemed dividend is then characterised at HoldCo level, including the special rule in section 964(e)(4), needs to be worked through before completion, because the result for an individual shareholder can differ from the result for a US corporate shareholder. On the UK side, the gain is taxed on HoldCo in the first case and on you personally in the second, under different reliefs, so the US and UK outcomes should be modelled together before the sale route is chosen.

Where does net CFC tested income fit in a multi-company group?

For taxable years beginning after 31 December 2025, section 951A carries the heading net CFC tested income, replacing the GILTI label, and it works by aggregating your pro rata shares of tested income and tested loss across all of your CFCs. Each company's Schedule I-1 is the CFC-level feed for that shareholder-level calculation, which the current instructions route to Form 8992. The mechanics of aggregating a UK group across the two forms deserve their own treatment, which we give them in a separate article.

What are the most common errors in tiered UK Form 5471 filings?

Filing for HoldCo only, on the assumption that the subsidiaries are covered by HoldCo's return.
Working from consolidated group accounts, which eliminate the intercompany dividends, loans and charges that Schedule M and Schedule R need.
Intercompany amounts that do not agree between the paying and receiving companies' Schedules M, R and J.
Treating a PTEP distribution from OpCo as a fresh dividend at HoldCo, or leaving it out of HoldCo's Schedule J and Schedule P.
Reporting a 31 March subsidiary on its UK statutory period instead of the US tax year that section 898 requires.
Missing Category 3 and Schedule O in the year a subsidiary is formed, bought or sold.
Assuming UK group relief nets losses and profits across companies for US purposes.
Assuming a company that files dormant accounts at Companies House automatically qualifies for the dormant summary Form 5471 procedure.

Tiered structures are where UK and US reporting diverge furthest. In the returns we prepare for business owners with UK groups, the work is less about any single schedule and more about making sure every company is in the filing population, every intercompany figure agrees on both sides, and every company's E&P and PTEP history is carried forward correctly from year to year. If earlier years were filed for HoldCo only, the missing subsidiary returns should be dealt with before the next year's filings are built on incomplete balances.