Do I owe US tax on my UK limited company profits if I never took a dividend?

Potentially, yes. The GILTI regime under section 951A includes a 10 percent US shareholder's share of a controlled foreign corporation's tested income in personal income for the year the company earns it, regardless of distributions. That is precisely why the rule exists. Whether an actual US liability arises after the section 962 election or the GILTI high-tax exclusion is applied is a separate question, and for a UK company paying corporation tax at normal rates the answer is often that little or no additional US tax is due. The reporting obligation, however, exists in every case, and it exists even in a year where the company distributed nothing at all.

Do I still have to file Form 5471 if my UK limited company made a loss?

Yes. Form 5471 is an information return, and the obligation is triggered by your ownership position rather than by the company's profitability. A loss-making company produces a tested loss rather than tested income, which is itself reportable on Schedule I-1, and tested losses can matter for later years and for the earnings and profits history on Schedule J. The IRS penalty of USD 10,000 for each annual accounting period of each foreign corporation applies to a missing or incomplete Form 5471 whether or not any tax was due, so a dormant or loss-making year is not a year you can skip.

I only just found out I am a US citizen. Can a streamlined submission cover the GILTI years?

Yes, provided you meet the eligibility conditions. The IRS Streamlined Foreign Offshore Procedures cover delinquent or amended returns for each of the most recent three years and delinquent FBARs for each of the most recent six years for which the due date has passed, and the Form 5471 and Form 8992 filings for those years form part of the submission. You must have had no US abode and have been physically outside the United States for at least 330 full days in any one of the most recent three years, and you must certify on Form 14653 that the failure to file was non-willful, which the IRS defines to include mistake and good faith misunderstanding of the law.

Should I make a section 962 election or claim the GILTI high-tax exclusion?

The decision turns on how highly the income is taxed on US-measured figures, on whether you retain or extract profits, and on how many years you are filing at once. The high-tax exclusion is usually tested first for a UK company because GOV.UK sets the main corporation tax rate at 25 percent for profits over GBP 250,000, but UK reliefs such as research and development relief can push the US-measured effective rate below the regulatory threshold. Note also that the exclusion binds the year of election and all later years until revoked, whereas section 962 is decided annually, so in a multi-year catch-up the exclusion question should be settled on the earliest year before anything else.

Do I have to report my UK limited company's bank account on the FBAR?

Where you own directly or indirectly more than 50 percent of the voting power or value of the company, the company's foreign financial accounts are treated as accounts in which you have a financial interest, so they are reportable on FinCEN Form 114 if the aggregate maximum value of all your reportable accounts exceeded USD 10,000 at any point in the calendar year. Signature authority over a company account can create a separate reporting obligation even without ownership. In a streamlined foreign offshore submission the FBAR schedule covers six years, so the company's account histories should be gathered at the same time as the accounting records.

GILTI and Your UK Limited Company: Accidental Americans

Q: Will the UK corporation tax my company already paid wipe out the GILTI charge?

Not by default. The UK corporation tax was paid by the company, and an individual shareholder who makes no election cannot claim a credit for it, because the deemed-paid credit under section 960 is a corporate-level mechanism. The US-UK treaty does not fix this either, since the saving clause preserves the United States' right to tax its own citizens on CFC inclusions. Relief comes from making a section 962 election, which lets the company's UK tax be treated as deemed paid by you, or from the high-tax exclusion, which removes sufficiently highly taxed income from the calculation before an inclusion arises.

GILTI and your UK limited company become the same problem the day you discover you are a US taxpayer, because a UK Ltd owned by a US shareholder is almost always a controlled foreign corporation, and the profits it earns are taxed to you personally in the United States under section 951A whether or not the company ever pays you a penny. That is the sentence that unsettles most accidental Americans. It is also the sentence that overstates the outcome, because the same body of law contains two standard levers that, correctly prepared and correctly documented, usually reduce the additional US charge on a normally taxed British trading company to a small figure or to nothing at all. The work is in the preparation, not in the fear.

This page is written for one specific person: the dual US-UK national or long-dormant US citizen who built a real business through a UK limited company, filed accounts at Companies House and paid UK corporation tax for years, and has only recently learned that the United States has been expecting a Form 1040 the whole time. That reader does not need a strategy comparison written for someone who is already compliant. That reader needs to know what the last several closed years now look like on a US return, which forms carry the GILTI numbers, and how those years get filed. We have separate pages covering the mechanics of the section 962 election, the GILTI high-tax exclusion, and Form 8992 and Schedule I-1 in isolation; this page is about the road from discovery to a filed submission.

What is GILTI, and how does it apply to a UK limited company?

GILTI is an annual US income inclusion that requires a 10 percent US shareholder of a controlled foreign corporation to report a share of that corporation's active business profits on a personal US return in the year those profits are earned. It is not a tax on dividends and it is not a tax on cash you have received. It is a deferral-blocking rule: Congress decided in 2017 that the active earnings of a foreign corporation controlled by Americans should not sit outside the US tax net until distribution, so it built a mechanism that pulls a measure of those earnings, called tested income, into the shareholder's return each year.

Tested income is not your UK taxable profit and it is not the profit shown in your statutory accounts. It is the company's gross income for US purposes, reduced by specified exclusions and by the deductions properly allocable to it, computed under US tax principles and translated into US dollars. In practice that means a preparer rebuilds the company's profit and loss account from a US standpoint: adding back items the UK disallows differently, recomputing depreciation where UK capital allowances have been claimed, stripping out any income already caught by the older Subpart F rules, and dealing with foreign currency translation. Two companies with identical UK corporation tax computations can produce materially different tested income figures.

The rule reaches an ordinary British consultancy, agency, software business or professional practice just as readily as it reaches the intangible-holding structures the name suggests. Nothing about the regime requires intangible assets, low tax rates or aggressive planning. A one-person Ltd in Manchester with a single client and a business bank account is inside it if the owner is a US person.

How does a UK limited company become a controlled foreign corporation?

A controlled foreign corporation is a foreign corporation in which US shareholders together own more than 50 percent of the total voting power or total value of the stock, counting only those US persons who each own at least 10 percent. A UK private company limited by shares is treated as a foreign corporation for US federal tax purposes under the default entity classification rules, so a UK Ltd is a foreign corporation from the moment of incorporation unless an affirmative election on Form 8832 says otherwise.

The practical consequence for accidental Americans is blunt. If you are the sole shareholder of your company, you personally satisfy both tests at once and the company has been a controlled foreign corporation for every year you have owned it. Points that decide the analysis in real cases include the following.

Ownership is tested by vote or by value, so a small holding of a share class carrying disproportionate voting rights can create US shareholder status on its own.
Constructive ownership rules attribute shares between family members and between entities, so a spouse's or a company's holding can be counted as yours even where the register of members does not show your name.
Alphabet share structures, common in UK owner-managed companies to flex dividends, need to be mapped share class by share class rather than treated as a single block.
Directorship without shareholding does not by itself make the company a controlled foreign corporation, but it can trigger a separate Form 5471 filing category.
Status is tested for each of the company's annual accounting periods, so a mid-year share issue, a buy-back or a new investor can change the answer part way through a year.

Which forms make up the GILTI reporting chain?

The GILTI number does not appear from nowhere on the Form 1040. It is built at company level, aggregated at shareholder level, and then carried into the return, and each stage has its own form. Understanding the chain is what makes a catch-up project tractable, because it tells you which company records you actually need before anything can be prepared.

Form 5471, Information Return of US Persons With Respect to Certain Foreign Corporations, is the company-level return. The IRS Instructions for Form 5471, revised December 2025, set out nine filer categories: 1a, 1b and 1c, 2, 3, 4, and 5a, 5b and 5c. A sole American owner of a UK Ltd is typically a Category 4 and Category 5a filer.
Schedule I-1 to Form 5471, Information for Global Intangible Low-Taxed Income, is where tested income or tested loss, tested foreign income taxes and the related interest items are computed. The IRS instructions require Schedule I-1 of Category 4 and Category 5a, 5b and 5c filers.
Schedule J tracks the company's accumulated earnings and profits, and Schedule P tracks previously taxed earnings and profits by category, so that a later distribution is not taxed twice.
Schedules E and E-1 record the foreign income taxes paid and deemed paid, which is where the UK corporation tax figure enters the US system.
Form 8992, titled by the IRS as US Shareholder Calculation of Global Intangible Low-Taxed Income (GILTI), together with its Schedule A, aggregates your pro rata share of the Schedule I-1 amounts and produces the inclusion figure. The Instructions for Form 8992 confirm that where Schedule I-1 is not filed, the amounts must still be supplied as if it had been.
Form 8993 computes the section 250 deduction, which is available in this setting only where a section 962 election is in place.
Form 1116 claims foreign tax credits at individual level, while a section 962 election moves the deemed-paid credit computation onto Form 1118.
FinCEN Form 114, the FBAR, and Form 8938 sit alongside the chain and report the company's bank accounts and your shareholding respectively.

The penalty exposure attaches to Form 5471 rather than to the tax. The IRS states a penalty of USD 10,000 for each annual accounting period of each foreign corporation for which a complete and correct Form 5471 is not filed, and if the form is still not filed within 90 days of an IRS notice, a continuation penalty of a further USD 10,000 for each 30-day period, capped at USD 50,000 for each failure. Those figures apply whether or not any US tax is due. Just as importantly, until the required information return is filed, the assessment period for the whole return does not close under section 6501(c)(8), which is why unfiled years do not quietly expire.

Does the UK corporation tax you already paid cancel the GILTI charge?

Not automatically, and the gap between the intuitive answer and the technical one is where most accidental Americans lose money. GOV.UK confirms that the UK corporation tax main rate is 25 percent for profits over GBP 250,000, that a small profits rate of 19 percent applies to profits of GBP 50,000 or less, that Marginal Relief bridges the two, and that these rates have applied since 1 April 2023. Those thresholds are proportionately reduced for short accounting periods and by the number of associated companies, which catches owners with more than one Ltd.

So a profitable UK company has usually paid substantial corporation tax before the US ever looks at it. The difficulty is that the tax was paid by the company, not by you. An individual US shareholder who makes no election takes the inclusion into income without the corporate-level reliefs and without a credit for the company's own UK tax, because the deemed-paid foreign tax credit under section 960 is a corporate mechanism. The US-UK income tax treaty does not solve this either: the saving clause preserves the United States' right to tax its citizens as though the treaty were not in force, and CFC inclusions are the classic case where it bites. Relief therefore has to be found inside US domestic law, through an election, rather than in the treaty.

Section 962 and the GILTI high-tax exclusion: the two standard levers

There are two routes that practitioners test first on a UK trading company, and they work in opposite directions. One accepts the inclusion and then relieves it; the other removes the income from the calculation before an inclusion arises.

The section 962 election asks to be taxed on the inclusion as though you were a domestic corporation. It applies the corporate rate, unlocks the section 250 deduction on Form 8993 and unlocks the section 960 deemed-paid credit on Form 1118, so the UK corporation tax the company paid finally becomes usable, subject to the statutory haircut. It is an annual election, made year by year with a statement attached to the return, and section 962(d) taxes the later actual distribution of those earnings again to the extent it exceeds the tax paid under the election. It is the natural choice where you intend to leave profits in the company.
The GILTI high-tax exclusion, in Treasury Regulation section 1.951A-2(c)(7), removes gross tested income from the calculation altogether where the effective foreign tax rate on it exceeds 90 percent of the highest rate specified in section 11. On a 21 percent section 11 rate that produces a threshold marginally above 18.9 percent, and you should confirm the applicable section 11 rate for the year you are filing before relying on that figure. Unlike section 962, this election applies to the year for which it is made and to all subsequent years until it is revoked, and it must be applied consistently across commonly controlled foreign corporations rather than picked company by company.

The trap in the high-tax exclusion is that the effective rate is measured against income determined under US rules, not against the UK corporation tax rate on the CT600. A company paying at the 25 percent main rate can still fail the test once the denominator is recomputed. UK reliefs are the usual culprits: research and development relief, patent box, full expensing and annual investment allowance all reduce the UK tax actually paid without reducing US-measured tested income to the same extent. Timing differences do the same thing in a single year even when the position evens out over the life of an asset. That calculation has to be run, not assumed.

What changed for tax years beginning after 31 December 2025

Legislation enacted in July 2025 recast section 951A for tax years beginning after 31 December 2025. The inclusion is renamed net CFC tested income in the revised statute, the reduction for a deemed return on the company's tangible assets is removed so that tested income is included without that offset, the percentage of the section 250 deduction available against these inclusions is reduced, and the haircut applied to the deemed-paid foreign tax credit is narrowed in the taxpayer's favour. We are deliberately not quoting the new percentages here: they had not been published in IRS form instructions at the time of writing, and a wrong figure on a return is worse than a figure you look up. Confirm each percentage on IRS.gov for the specific year you are filing.

It is worth noting what the IRS forms themselves still said as this page was prepared. The About Form 8992 page on IRS.gov still carries the Global Intangible Low-Taxed Income title and reports no recent developments, and the published Instructions for Form 8992 remain at the December 2024 revision, still describing the deemed tangible income return computation. Form and statute are, for the moment, on different timetables. For a UK Ltd owner the direction of travel is what matters: companies with meaningful plant, equipment or fit-out lose an offset they previously had, while the improved credit haircut makes an election that uses UK corporation tax more attractive than it was.

Catching up: GILTI years inside a streamlined foreign offshore submission

For an accidental American who has never filed, the Streamlined Foreign Offshore Procedures are the route the IRS itself publishes. The IRS sets the non-residency test as having had no US abode and having been physically outside the United States for at least 330 full days in any one of the most recent three years for which the due date has passed. The submission consists of delinquent or amended returns for each of the most recent three years and delinquent FBARs for each of the most recent six years for which the FBAR due date has passed, together with a signed Form 14653 certifying that the failure to file was non-willful. The IRS defines non-willful conduct as conduct due to negligence, inadvertence, mistake, or conduct resulting from a good faith misunderstanding of the requirements of the law. The IRS also insists that Streamlined Foreign Offshore is written in red at the top of each return, and describes this as critical to the returns being processed under the procedures.

For a company owner, the practical content of that package is heavier than the headline suggests. Each of the three years carries a complete Form 5471 with the schedules listed above, a Form 8992 with Schedule A, any election statements, and the foreign tax credit forms. Form 14653 also requires a narrative statement of facts, and for a company owner that narrative has to explain not only why personal returns were not filed but why a company was formed and operated without any US filing. Bear in mind the IRS states that streamlined returns are processed like any other return and do not carry automatic audit protection.

If you have in fact been filing US returns and simply omitted the company, streamlined is the wrong door. The Delinquent International Information Return Submission Procedures are designed for that case: the missing Form 5471 is attached to an amended return and filed through normal procedures, with a reasonable cause statement if one is being asserted. The IRS warns that penalties may be assessed during processing without the attached statement being considered, so that route is usually a two-stage exercise in practice.

A worked example: an accidental American with a UK consultancy

Take Rachel Okonjo-Hart, a fictional but entirely typical case. Rachel was born in Boston while her British parents were on a two-year secondment, returned to the UK aged three, and has held a US passport she has never used. In 2016 she incorporated Marlow Analytics Ltd, a data consultancy in Buckinghamshire. She is the sole director and sole ordinary shareholder. The company has filed accounts at Companies House every year, pays corporation tax on schedule, and made profits before tax of roughly GBP 380,000 in its most recent completed year. Rachel takes a small salary and the balance of her income in dividends, and has always left a working capital reserve in the company. In late 2025 her bank sent her a self-certification form; the form asked about US citizenship; and Rachel found out what her passport meant.

The preparation sequence in a case like this is stable. First, establish the facts of ownership and control for each company accounting period since incorporation and confirm which Form 5471 categories apply. Second, rebuild tested income under US principles for the three streamlined years from the underlying trial balances rather than from the filed accounts, translating into US dollars. Third, compute the effective foreign tax rate for each year on the US-measured figures to see whether the high-tax exclusion is genuinely available, remembering that Marlow's profits sit above the GBP 250,000 main rate threshold but that any research and development claim will pull the tested-income effective rate down. Fourth, model the alternative in which a section 962 election is made instead, taking into account that Rachel intends to keep retaining profit in the company and that her later distributions carry a second charge under section 962(d). Fifth, prepare the FBARs for the company accounts and her personal accounts, and the Form 8938 disclosure of the shareholding. Only then is the Form 14653 narrative drafted, because the narrative should describe a position the return already supports.

One submission, two versions of the same regime

Here is the point that almost no published guidance addresses, and it changes how a catch-up engagement should be run. A streamlined submission filed now covers three closed years that all fall under the pre-2026 version of section 951A, complete with the deemed tangible return offset and the older section 250 and credit percentages. The very next return Rachel files, her first current-year return, is prepared under the recast net CFC tested income rules. One engagement therefore spans two statutory versions of the same regime, and the arithmetic that made an election attractive in the catch-up years is not the arithmetic that will apply going forward.

The consequence is that a catch-up project should be modelled across at least four years, not three. A company holding significant fixed assets may have relied on the tangible-asset offset in the historic years and lose it prospectively. Conversely, a company whose UK corporation tax is comfortably creditable may find the improved credit position makes an election that looked marginal in the older years the obvious answer for the current one. Preparing the three streamlined years in isolation and then discovering the answer flips is an avoidable and expensive way to learn this.

Election sequencing: the earliest catch-up year drives everything after it

The second overlooked point is ordering. The two levers behave completely differently across a multi-year submission. Section 962 is an annual election, so it can be made for one streamlined year and not another, and the analysis can be repeated each year on its own facts. The high-tax exclusion is not annual in the same sense: it applies to the year for which it is made and to every subsequent year until it is affirmatively revoked, and it has to be applied consistently across foreign corporations under common control.

That asymmetry means the decision taken on the oldest year in a streamlined package silently sets the default for the two later years in the same package and for the current year that follows it. If Rachel owns a second UK company, the exclusion cannot be claimed for the profitable one and declined for the other. If she is contemplating a share sale or an investor round, the position she locks in now travels with her. Elections must also be documented as elections, with the required statements attached to the specific returns, and a streamlined package that computes the right numbers but omits the election statements is not the same filing at all. Sequence the analysis from the earliest year forward, decide the exclusion question first because it binds, and only then run the annual section 962 question year by year within whatever framework that decision leaves.

Reconstructing earnings and profits from before the streamlined window

Schedule J and Schedule P do not begin at the earliest streamlined year. They ask for the company's accumulated earnings and profits and its previously taxed earnings and profits, which for Marlow Analytics means a history running back to incorporation in 2016. Earnings and profits is a US concept, so a decade of UK statutory accounts prepared under FRS 102 or FRS 105 has to be recast: depreciation restated on US lines, non-deductible items adjusted, dividends already paid removed, and each year translated at the appropriate exchange rates. Getting this wrong understates or overstates the pool of previously taxed earnings, and the error surfaces later as double taxation on a distribution the company has already been taxed on.

This is also where an accidental American should expect the real cost of a catch-up to sit. The three tax returns are the visible part. The company history behind Schedule J and Schedule P is the part that takes the time, and it is the part that determines whether the next ten years of filings are clean.

What Companies House and HMRC records mean for your filing package

UK company owners occupy an unusual documentary position. Companies House publishes your incorporation date, your appointment as a director, your persons with significant control entry and a decade of filed accounts, all freely searchable. HMRC holds the corporation tax computations. UK financial institutions report account information relating to US persons under the intergovernmental agreement implementing FATCA, which is very often how the discovery happens in the first place. In short, the underlying facts of your ownership have been on the public record throughout.

For a non-willful certification this cuts in a useful direction. There is nothing hidden to explain away, the company was formed for a genuine commercial purpose in the country where the owner lives and works, and the accounting records needed to support tested income already exist to a UK statutory standard. Assembling those records early, in the form the schedules require, makes both the return preparation and the Form 14653 narrative considerably stronger.

A preparation checklist for the first ninety days

Confirm your US status and obtain or locate a Social Security Number, since streamlined penalty relief depends on having one.
Pull the full company filing history from Companies House and the statutory accounts and corporation tax computations for every year since incorporation.
Extract the trial balances rather than relying on the abridged accounts most small UK companies file.
List every bank, savings and merchant account held by the company and by you personally, with maximum balances by year, for the FBAR schedule.
Map the share capital by class, by holder and by date, including any alphabet shares, share issues or buy-backs.
Identify any research and development claims, patent box elections or large capital allowance claims, as these are the items most likely to break the high-tax test.
Fix the position on the earliest year first, because the high-tax exclusion decision binds forward.
Model the current year under the recast rules alongside the three historic years before finalising any election.

GILTI and your UK limited company are not a reason to close a working business, move it, or panic-file something incomplete. They are a reporting and computation exercise with a defined set of forms, a published catch-up route on IRS.gov, and two well-established elections designed for exactly the situation of someone whose company already pays a normal rate of corporation tax in the country where it trades. What determines the outcome is the order in which the work is done and the quality of the company records behind it, and both of those are within your control from the day you find out.