Specialist US UK Tax Services: Section 1248 UK Company Sale

Section 1248 recharacterises gain on the sale of stock in a controlled foreign corporation as a dividend, to the extent of the company's earnings and profits attributable to that stock. For a US founder who sold a UK limited company in a year that was never filed, this means the disposal is not a single capital gain, and the E&P history must be rebuilt before the return can be prepared.

If you are searching for Specialist US UK Tax Services because a UK exit has surfaced years later, this guide is written for you: the founder, the executive with a meaningful minority stake, or the family member who inherited shares and sold them. Jungle Tax prepares these returns. This is a preparation guide for an unfiled year, not exit planning, and every technical point below is drawn from the statute and from published IRS guidance rather than from generalist expat commentary.

What section 1248 actually does when you sell a UK limited company

The default assumption of most sellers is comfortable and wrong. You sold shares; shares are a capital asset; you held them for years; therefore the whole gain is long-term capital gain. Section 1248 interrupts that logic. Where its conditions are met, the gain recognised on the sale or exchange of the stock is included in gross income as a dividend, to the extent of the earnings and profits of the foreign corporation attributable to that stock.

Only the excess above that E&P figure stays capital gain. The dividend portion is not an alternative computation or an election. It is a mandatory recharacterisation, and it changes the character of the income, its source, the foreign tax credit limitation category it falls into, and the schedules that have to be attached to the return.

The two conditions that must both be satisfied

Section 1248(a) applies where a United States person sells or exchanges stock in a foreign corporation and that person owns, within the meaning of section 958(a), or is considered as owning by applying the attribution rules of section 958(b), 10 percent or more of the total combined voting power of all classes of stock entitled to vote of the foreign corporation at any time during the five-year period ending on the date of the sale or exchange, when the foreign corporation was a controlled foreign corporation as defined in section 957.

Two details in that sentence are consistently missed by generalist pages, and both matter enormously when you are reconstructing a past year:

• The threshold is voting power, not value. The section 1248(a) test is framed by reference to 10 percent or more of the total combined voting power of voting stock. A founder holding a large economic interest through non-voting shares, and a founder holding a small percentage of a heavily voting-weighted class, can land on opposite sides of the line from where instinct puts them. The UK share register, the articles, and any shareholders' agreement have to be read, not assumed.
• The test is historic, not just current. It is satisfied if the ownership condition was met at any time during the five years ending on the sale date, during a period when the company was a CFC. Selling down below 10 percent shortly before completion, or the company ceasing to be a CFC because other US holders exited, does not by itself take the disposal outside section 1248.

Alongside those conditions, the E&P that can be pulled into the dividend is itself limited: it is E&P attributable to the stock sold, accumulated in taxable years beginning after 31 December 1962, and accumulated during the period or periods the stock sold was held by that person while the foreign corporation was a controlled foreign corporation. Pre-CFC years, and years in which someone else held the shares, do not feed the dividend for you.

When did the UK Ltd become a controlled foreign corporation?

A UK private limited company is a foreign corporation for US purposes unless a different classification was validly elected. Some founders filed Form 8832 to treat the Ltd as a disregarded entity or partnership; most did not, and the per se and default classification rules leave a UK Ltd sitting as a corporation. The absence of any election in the file is itself a finding to record, because it determines every subsequent step.

The company is a CFC where US shareholders — persons owning 10 percent or more of vote or value — together own more than 50 percent of the vote or value on any day of the taxable year. Reconstructing this for a company that was sold three or five years ago is genuine forensic work. We routinely find:

• A US founder who believed they were a lone American in a UK cap table, when a second US-person shareholder, a US-resident spouse, or a US person's family attribution tipped the company over 50 percent for part of the period;
• Companies that were CFCs only for a window — after a US co-founder joined, before a UK institutional round diluted the US block — with the E&P clock running only for that window;
• Structures where a US-parented group sat above the UK company, bringing the downward attribution rules and the wider constructive ownership machinery into play.

None of this is discretionary. It has to be established on the facts before you can even say whether section 1248 is in point, and it is the single most common place where a first-attempt return prepared by a domestic-only preparer goes wrong.

How much of the gain becomes a dividend?

The dividend is capped by the E&P attributable to the stock. Getting to that number is the substance of the engagement, and it is not a figure the UK accountant can hand you. UK statutory accounts are prepared under FRS 102 or FRS 105 and reconciled to UK corporation tax; US earnings and profits is a separate, statutory US measure computed under US principles.

What is excluded from section 1248 earnings and profits

Section 1248(d) removes several categories from the E&P that can be recharacterised. The commercially decisive ones for a founder are:

• Previously taxed earnings and profits (PTEP). Amounts already included in the US shareholder's income under the subpart F regime, and the corresponding previously taxed accounts, are excluded. This is the pivot of the whole exercise for an unfiled year, and we return to it below.
• Certain US-source effectively connected income of the foreign corporation, subject to the statutory conditions.
• Amounts previously taxed under the passive foreign investment company rules where a qualified electing fund inclusion has already been taxed.

Section 1248(c)(2) runs the other way: where the foreign corporation sold owns subsidiaries meeting the ownership tests, the E&P of those lower-tier companies can be pulled up into the calculation. A UK holding company with trading subsidiaries — a very common founder structure — therefore requires the E&P of the group, not just the top company, to be established.

Rebuilding the E&P history before the return can be prepared

This is the part no competing page addresses honestly, because it is unglamorous and it is where the fee sits. For an unfiled sale year, the work runs roughly as follows:

• Obtain the full run of UK statutory accounts from incorporation (or from the first CFC year) to the date of sale, together with the corporation tax computations and any deferred tax notes.
• Convert each year's result to US measures of income: depreciation on US lives and methods rather than UK capital allowances, US treatment of accrued and contingent liabilities, US rules on reserves and provisions, and the disallowance items that differ between the two systems.
• Apply the functional currency and translation rules consistently across every year, and document the rates used. Sterling E&P translated inconsistently across a decade is a favourite examination point.
• Identify and remove distributions actually made in each year, including dividends the founder took and any distributions in specie on a pre-sale reorganisation.
• Layer in subpart F and global intangible low-taxed income inclusions for every open year, in order, so that the PTEP accounts are correct at the date of sale.
• Track the shareholder's stock basis, which is increased by inclusions and reduced by distributions of previously taxed amounts under the basis rules. Basis drives the size of the total gain, which in turn caps the dividend.
• Attribute the resulting E&P to the specific block of stock sold, for the specific holding period during which the company was a CFC.

The order matters. You cannot compute the section 1248 dividend until the PTEP is known, and you cannot know the PTEP until the inclusions for the earlier unfiled years have been computed. This is why a compliance catch-up over a sale year is never a single-year engagement.

The counter-intuitive result: filing the earlier years usually shrinks the dividend

Here is the point that reframes the whole matter for most founders, and that we have not seen stated clearly on a single generalist page. A US founder who never filed has, on the face of it, a large pool of untaxed E&P sitting in the UK company and therefore a large section 1248 dividend. A founder who filed properly throughout has been picking up subpart F and GILTI inclusions year by year; those inclusions created PTEP, and PTEP is excluded from section 1248 E&P.

Bringing the earlier years into the filing — which is the point of a catch-up — therefore does two things at once. It creates the inclusions and the tax (with any credits and elections available for those years), and it converts untaxed E&P into previously taxed accounts, which is subtracted from the section 1248 dividend and which increases stock basis. Preparing the sale year in isolation, without the preceding years, systematically overstates the dividend. It is the most expensive shortcut in this area.

Is the recharacterised amount a qualified dividend?

For an individual, this is the difference between preferential rates and ordinary rates on a seven-figure sum, so it deserves a precise answer rather than a hedge.

The IRS addressed it directly in Notice 2004-70. Amounts treated as dividends under section 1248(a) are qualified dividend income provided that the CFC is otherwise a qualified foreign corporation under section 1(h)(11)(C) and the other requirements of section 1(h)(11) are met. The Notice also confirms in terms that this can hold where the foreign corporation was a CFC during the five-year period prior to the disposition.

A foreign corporation is a qualified foreign corporation if, among the routes available, it is eligible for the benefits of a comprehensive US income tax treaty that the Secretary has determined is satisfactory and that includes an exchange of information programme. The current list is in Notice 2024-11, which amplified and superseded Notice 2011-64, added Chile, and removed Russia and Hungary. The United Kingdom appears in that appendix. A UK limited company that is eligible for benefits under the US–UK treaty — including satisfying the limitation on benefits article, tested as though the company were claiming treaty benefits even if it derives no US-source income — can therefore be a qualified foreign corporation.

Two conditions still have to be met on the shareholder's side. The section 1(h)(11) holding-period requirement applies, and the recharacterised amount cannot be qualified dividend income if the taxpayer's position fails it. Separately, PFIC status is fatal: a foreign corporation that is a passive foreign investment company for the relevant year is excluded from qualified foreign corporation treatment, which is why a UK company that became cash-rich and passive in the run-up to a sale needs its PFIC position tested rather than assumed.

The section 1248(b) ceiling — the relief most preparers never compute

Section 1248(b) contains a limitation for individuals holding the stock as a capital asset for more than one year. In broad terms it caps the tax attributable to the section 1248 amount at a hypothetical two-tier computation: the US corporate-level tax the foreign corporation would have paid on the relevant E&P, reduced by foreign taxes actually paid, plus the tax the individual would have borne had the amount been long-term capital gain. Where the UK company paid substantial UK corporation tax on the earnings that make up the E&P — as a genuine UK trading company almost always did — this ceiling can materially reduce the result.

It is a computation, not an election you can point at in a letter, and it requires the same rebuilt E&P and the same UK corporation tax history. Because it is laborious, it is skipped. On a founder-scale disposal it is frequently the single most valuable line in the return.

The foreign tax credit problem: the UK taxed a gain, the US is taxing a dividend

This is the genuine cross-border interaction, and it is where generalist US pages and generalist UK pages both stop.

If you were UK resident on the disposal, HMRC taxed a capital gain on the sale of shares, potentially with Business Asset Disposal Relief where the personal company, trading company, 5 percent ordinary share capital and voting rights, and officer-or-employee conditions were met throughout the qualifying period. GOV.UK states the BADR rate as 18 percent for qualifying disposals from 6 April 2026, 14 percent for disposals between 6 April 2025 and 5 April 2026, and 10 percent for disposals on or before 5 April 2025, subject to the £1 million lifetime limit. Gains above the limit fall into the main CGT rates.

The US, meanwhile, is looking at the same economic event and seeing two different items of income:

• The section 1248 dividend. A dividend from a foreign corporation is generally foreign-source, which is helpful for credit purposes. Its foreign tax credit limitation category is determined under the section 904(d) rules, with look-through by reference to the character of the underlying earnings; for an operating UK trading company the amount will commonly fall in the general category rather than the passive category, but this has to be established from the E&P analysis rather than assumed.
• The residual capital gain. Gain on the sale of personal property by a US resident is generally sourced to the residence of the seller, which means US-source. US-source income does not generate a foreign tax credit limitation, so the UK CGT sitting on that slice of the transaction has, on the face of the domestic rules, nothing to attach to.

The practical consequences follow directly. First, the UK tax paid on a single UK capital gain has to be allocated across two differently characterised US items. Second, where the recharacterised amount is qualified dividend income, the section 904(b)(2)(B) rate-differential adjustment applies: foreign-source qualified dividend income is scaled down before it enters the limitation fraction, using the factors set out in the Form 1116 instructions, which shrinks the credit that the preferential rate appeared to make available. Preferential character and full credit utilisation pull against each other, and the better answer is a computation, not a preference.

Third, the treaty matters. The US–UK treaty's relief-from-double-taxation and gains articles, together with the resourcing mechanics, are the route by which an otherwise stranded UK tax can be brought into the limitation. Treaty positions of this kind are taken on the return with disclosure, not assumed silently, and they should be modelled against the section 1248(b) ceiling before the return is finalised. This is exactly the work our cross-border team does alongside the US filing and UK filing sides of a catch-up.

US and UK treatment of the same disposal, side by side

Issue	United States (IRS)	United Kingdom (HMRC)
Character of the proceeds	Dividend to the extent of section 1248 E&P; capital gain on the excess	Single chargeable gain on the disposal of shares
Trigger threshold	10 percent or more of total combined voting power at any time in the 5 years to sale, while a CFC	BADR requires at least 5 percent of ordinary share capital and voting rights, plus the other conditions
Look-back period	5-year ownership test; E&P measured over the CFC holding period from years beginning after 1962	2-year qualifying period ending with the disposal for BADR
Rate applied	Preferential qualified dividend rates if the section 1(h)(11) conditions are met; otherwise ordinary rates. Net investment income tax may also apply	BADR rate for qualifying gains within the lifetime limit; main CGT rates above it
Relief for the other country's tax	Foreign tax credit by limitation category, subject to sourcing and the rate-differential adjustment	Double taxation relief under the treaty and domestic rules
Key form in the sale year	Form 5471, Form 1116, plus the capital gains schedules	Self Assessment return with the capital gains pages
Reporting if the year was never filed	Return plus information returns; the assessment period can remain open where required information returns were not filed	Late Self Assessment, with interest and penalties by reference to behaviour

Form 5471 in the year of sale — and why the unfiled year stays open

A US shareholder of a CFC is generally a Category 5 filer of Form 5471, and a disposal year is one of the most schedule-intensive filings in the entire form. In practice the sale year requires the E&P and taxes history on the accumulated earnings and profits schedule, the previously taxed accounts on the PTEP schedule, the income statement and balance sheet schedules, the shareholder and ownership schedules, and the disclosures relevant to the disposition itself. These schedules are not decorative: they are the documentary support for the section 1248 number claimed on the return, and they are the first thing an examiner reads.

The compliance stakes are asymmetric. Where a required information return such as Form 5471 has not been filed, the assessment period for the return can remain open until the required information is supplied, which is why an unfiled 2019 or 2021 sale year does not simply age out. A UK exit sitting behind missing 5471s is a live year for as long as it stays unfiled. Penalties for failure to file the form are significant and are asserted by category, per company, per year.

Getting the unfiled year filed: the route matters

Where the failure to file was non-wilful, the Streamlined Filing Compliance Procedures are usually the right frame for a founder who was living outside the US and did not appreciate that a UK company created annual US reporting. The foreign offshore procedure carries no miscellaneous offshore penalty where the non-residency condition and the non-wilfulness certification are properly satisfied, and it accommodates the delinquent Forms 5471 and the amended computations in a single coherent submission. We set out the mechanics in our streamlined filing pages.

The judgement call is real, and it is not one to make quickly. Where the sale year is very large, where the facts around knowledge are less comfortable, or where the certification would be difficult to write honestly, streamlined is the wrong door and a different disclosure route is appropriate. The certification narrative is a signed statement of fact that will be read against the file, and it should be drafted after the numbers are known, never before.

The order of work we follow on a section 1248 catch-up

• Establish entity classification: was Form 8832 ever filed, and what is the company by default?
• Reconstruct the cap table year by year and identify the exact windows in which the company was a CFC and the founder was a US shareholder.
• Test the section 1248(a) conditions on voting power across the five-year period ending on the disposal date.
• Rebuild E&P from UK statutory accounts to US measures for every relevant year, in the company's functional currency, with the translation basis documented.
• Compute subpart F and GILTI inclusions for the open earlier years and establish the PTEP accounts and the resulting stock basis at the sale date.
• Compute the total gain, then the section 1248 dividend capped by attributable E&P, then the residual capital gain.
• Test qualified foreign corporation status, treaty eligibility, PFIC status and the shareholder holding period to determine whether the dividend is qualified dividend income.
• Compute the section 1248(b) ceiling and compare.
• Model the foreign tax credit by limitation category, apply the rate-differential adjustment, and evaluate the treaty resourcing position for the UK tax on the disposal.
• Prepare the Forms 5471, the credit forms, the FBAR and Form 8938 positions for the sale proceeds, and the disclosure package.

Five mistakes we see most often

• Reporting the whole disposal as capital gain because the UK adviser and the share purchase agreement both call it a sale of shares. The UK characterisation does not control the US answer.
• Filing the sale year alone. Without the earlier years there is no PTEP, no basis step, and the dividend is overstated.
• Using UK retained earnings as E&P. They are different measures computed under different rules, and the difference on a decade of trading is rarely small.
• Assuming the UK tax will simply credit out. Sourcing and basketing frequently strand part of it unless the treaty position is taken deliberately.
• Skipping section 1248(b). On a UK trading company that paid real UK corporation tax, this is often the largest single relief on the return.

The pattern that unites all five is the same: a domestic-quality answer applied to a genuinely cross-border transaction. Founders with disposals of this scale are usually better served by a team that prepares both sides, which is how our private client engagements are structured, and further technical material sits in our guides library.

Speak to us before you file

If you sold a UK limited company in a year that was never filed, the position is fixable, and it is almost always better than the worst-case arithmetic a first look suggests — but only if the earlier years are brought in and the E&P is rebuilt properly before anything is submitted. We handle these engagements discreetly, end to end, from the reconstruction through to the disclosure package and the correspondence that follows. To discuss your position in confidence, contact our cross-border team for a private consultation.