US Owner UK Company Retained Profits: Leaving Britain

Ceasing UK residence does not close the file on a UK limited company's accumulated reserves. For an American founder, US owner UK company retained profits stay fully reportable to the IRS every year after departure, and the character of whatever eventually comes out — a dividend, a loan account repayment, a share sale — changes the moment your residence ends.

This guide is written for founders who have already left, or are already committed to leaving, and who are looking at a balance sheet with years of undistributed profit on it. It is about what must be reported, in which country, and in which year. It is not about timing a departure or engineering an extraction. At Jungle Tax we prepare the returns that follow the move, and the pattern we see is consistent: the UK side quietens down, the US side does not, and the two systems stop agreeing about what the money is.

What actually ends when your UK residence ends?

Three separate things are often collapsed into one in a founder's mind, and they end at three different moments — or not at all.

• Your personal UK residence. This ends under the Statutory Residence Test, usually with a split year. From that point your UK income tax exposure is limited to UK-source income, and the treatment of UK dividends for a non-resident is unusually favourable (see below).
• The company's UK residence. This does not automatically follow you. A company incorporated in England and Wales is UK resident by incorporation, and stays UK resident regardless of where its directors sit, unless a double tax treaty tie-breaks it elsewhere. Corporation tax on the trade generally continues.
• Your US obligations. These end when your citizenship or green card ends, and not a day earlier. Departure from the UK is invisible to the Internal Revenue Code.

The practical consequence is that a founder who leaves Britain in, say, March of a tax year will often file a final UK self assessment return with a split-year claim, keep filing UK corporation tax returns for the company, and keep filing exactly the same US international information returns they filed while resident — minus the reliefs that depended on living abroad in a way the US recognises.

The relief you quietly lose on the way out

If you leave the UK for a country where you do not establish a tax home, or you return to the United States, the foreign earned income exclusion stops being available for salary drawn from the company. The IRS sets out the tax home and bona fide residence conditions in its guidance on the foreign earned income exclusion. Founders who moved from London to a low-tax jurisdiction, or back to a US state, frequently keep claiming it out of habit on a salary that no longer qualifies. That is an amended-return problem, and it sits alongside the retained profits question rather than instead of it.

Does leaving the UK stop your Form 5471 obligation?

No. Form 5471 is triggered by your relationship to a foreign corporation, not by where you live. A US person who owns a UK limited company is filing because of ownership, control or an acquisition or disposition event — and none of those are residence-sensitive. The IRS describes the return's scope on its About Form 5471 page.

What does change after departure is which schedules matter and how hard they are to complete. While you were in the UK, the company's bookkeeping was in front of you and your UK accountant was producing statutory accounts you could convert. After you leave — especially if you have handed day-to-day management to a co-director or a UK-based finance function — the information stops flowing, and the earnings and profits schedules degrade. We routinely take on files where the last three Forms 5471 carry a rolled-forward E&P figure that nobody has reconciled since the year of departure.

We have covered the categories, the schedule set and the penalty exposure in detail in our guide to Form 5471 for US owners of UK limited companies, and the annual income inclusion mechanics in our guide to GILTI and the section 962 election for US founders. This guide assumes both and picks up where they stop: at the departure itself, and at the reserve that was already sitting there when you left.

What happens to profits you accumulated before you left?

Nothing happens to them in the UK. They sit in the company, already charged to corporation tax, as distributable reserves. On the US side, the answer depends entirely on whether those profits were already picked up in your income in the year the company earned them — and that turns the reserve into a layered thing rather than a single number.

The layers inside your reserves

For a founder who has held a UK company through the last decade, the accumulated profit typically breaks into three quite different pools for US purposes. Getting them separated is the single most valuable piece of work you can do before any money moves.

Layer	What it is	US treatment when distributed
Pre-2018 untaxed earnings	Profit earned before the transition tax era that was never included in your US income	Ordinary dividend income when paid; qualified dividend rates are generally available because of the US–UK treaty, subject to holding-period conditions
Transition tax earnings	Accumulated post-1986 earnings caught by the one-off 2017 transition charge, where you filed and paid it	Previously taxed earnings and profits (PTEP) — generally excluded from income on distribution
Annual inclusion earnings	Subpart F and GILTI amounts included in your income each year since 2018, whether or not any cash moved	PTEP — generally excluded from income on distribution, but with a currency consequence

The reason this matters at departure is that the PTEP layers are the ones the IRS expects you to have tracked contemporaneously, on the earnings and profits schedules of Form 5471. If the tracking lapsed at the point you left Britain — which is exactly when it usually lapses — then a distribution five years later has no documented pool to be drawn from, and the default position is that it is a taxable dividend out of untaxed earnings. You do not lose the PTEP as a matter of law. You lose the ability to evidence it, which in practice is the same thing until the reconstruction work is done.

The 2026 change that resets the annual number

For tax years beginning in 2026 the GILTI regime is renamed net CFC tested income, the deemed tangible return that used to shelter part of the inclusion is repealed, the section 250 deduction is reduced, and the creditable proportion of foreign taxes deemed paid is increased. The net effect for a profitable UK trading company is a broader inclusion base at a modestly higher effective rate, partly offset by better credit treatment. Founders who left the UK before 2026 and assumed their inclusion pattern was stable should expect the 2026 return to look different from the 2025 one even if the company's trading result does not move.

What does a later distribution look like on the US return?

Assume you left Britain three years ago and the company now pays you a substantial dividend out of reserves built up over eight years. Four things happen on the US return, and only the first is intuitive.

• Ordering. The distribution is sourced against the company's earnings pools in a prescribed order, with previously taxed earnings generally coming out ahead of untaxed earnings. A dividend that looks enormous can therefore produce very little additional US income — if, and only if, the PTEP accounts are documented.
• Currency gain or loss. This is the point almost every generalist page misses. The PTEP was included in your income at the exchange rate prevailing in the inclusion year. The cash comes out in sterling at today's rate. The difference is a separate foreign currency item, taxed as ordinary income (or allowed as a loss), and for a founder who accumulated reserves across a period of significant sterling volatility it can be a five- or six-figure number on its own.
• Basis. Your basis in the shares was increased by each inclusion and is reduced by each PTEP distribution. Where distributions exceed basis, the excess is capital gain. Founders who took the section 962 election in some years and not others end up with a basis history that has to be rebuilt election-year by election-year.
• Credit for UK tax. The UK generally does not withhold at source on dividends paid by a UK company, so in the ordinary case there is no UK tax to credit. Where UK tax does arise — the temporary non-residence scenario below — the credit position is genuinely awkward, because the US income was recognised in earlier years and the UK charge lands in a later one.

What does a later distribution look like on the UK return?

Here the UK is, at first glance, generous. A non-UK resident individual who receives a UK dividend can fall within the "disregarded income" rules, under which the UK tax liability on that income is capped — often at nil — in exchange for giving up the personal allowance in the liability computation. For a founder with no other UK-source income, a post-departure dividend from their own UK company can therefore carry little or no UK income tax. This is why so many UK-facing articles treat post-departure distributions as a solved problem.

Two things break that comfort for an American.

Temporary non-residence, and the 6 April 2026 tightening

If you were UK resident in at least four of the seven tax years before departure and you return to the UK within five years, you are a temporary non-resident. Distributions from a close company received while you were away are then charged to UK income tax in the year of your return, as if you had received them in that year. HMRC sets this out in its Residence and FIG Regime Manual at RFIG21600.

Until recently, the charge carved out the part of a dividend attributable to trading profits earned after departure, with an attribution exercise to separate pre- and post-departure reserves. From 6 April 2026 that carve-out is removed: the full distribution received during the period of temporary non-residence falls into the charge on return, irrespective of when the underlying profits were earned, with relief for foreign tax paid. For a founder sitting on years of pre-departure reserves the practical answer barely changes — those reserves were always caught — but the attribution schedules that used to be worth preparing no longer buy anything, and any assumption built on the old carve-out is now wrong.

The mismatch nobody warns you about

Put the two systems side by side and the problem is obvious. The US taxed the profit in the year the company earned it. The UK may tax the same profit in the year you return to Britain, potentially six or seven years later. The US distribution is largely a non-taxable PTEP recovery, so there is little or no US income in the later year against which a foreign tax credit for the UK charge can be claimed. The UK gives relief for foreign tax paid, but the foreign tax was paid in a different year on a different characterisation.

This is a timing and character mismatch rather than a rule that anyone got wrong, and it is precisely the kind of interaction that a UK-only or US-only preparer will not see. It is the reason our US–UK tax accountants prepare both sides of a departing founder's file together, rather than coordinating with a counterpart after the fact.

US versus UK: the same distribution, two answers

Question	United States (IRS)	United Kingdom (HMRC)
Are undistributed reserves taxed before payout?	Yes, annually, through Subpart F and the net CFC tested income regime	No — corporation tax only, at the company level
Does your departure from Britain change the position?	No — obligations follow citizenship, not residence	Yes — your personal charge narrows to UK-source income
Is a post-departure dividend taxable to you?	Only to the extent it exceeds previously taxed earnings, plus currency gain	Often nil under the disregarded income rules — unless temporary non-residence applies
In which year?	Largely in the earlier inclusion years	In the year you resume UK residence, if temporarily non-resident
Withholding on the dividend?	N/A	None on UK company dividends
Annual filing after departure	Form 1040 with international information returns, indefinitely	Self assessment only where UK-source income or gains require it
Does the company keep filing?	N/A — the company is not a US filer	Yes — corporation tax returns continue

Does the company itself leave the UK when you do?

Usually not, and founders are often surprised by how hard it is to move a company's residence by accident. A UK-incorporated company is UK resident by virtue of incorporation. However, if central management and control genuinely relocates — and in a founder-led business, central management and control tends to be wherever the founder is — the company can become resident in the new country under that country's domestic law and then be treated as non-UK resident under the relevant treaty's tie-breaker.

If that happens, it is a reportable event in its own right. The company is treated as disposing of and immediately reacquiring its chargeable assets at market value immediately before residence ceases, and there is a notification and settlement process with HMRC. The mechanics are set out in HMRC's Capital Gains Manual at CG13430. For an asset-light consultancy the exit charge may be immaterial; for a company holding goodwill, intellectual property or an investment portfolio it will not be.

For US purposes, none of this changes the company's status. It remains a foreign corporation and, if the ownership tests are met, a controlled foreign corporation. What can change is the source and creditability of the taxes it pays, which feeds into your annual inclusion computation. A company that migrates from the UK to a jurisdiction with a materially lower corporate rate can move a founder from "inclusion largely absorbed by credits" to "inclusion producing real US tax" without a single change in trading behaviour.

What if you sell the company instead of distributing?

A sale collapses several of these questions at once and creates one that is unique to American owners.

On the UK side, a non-resident individual is generally outside the scope of UK capital gains tax on a disposal of shares in a UK trading company, subject to the UK property-rich rules and to the temporary non-residence provisions, which can bring a gain realised while abroad back into charge in the year of return. On the US side, the gain is fully taxable, and a specific rule recharacterises part of it: gain on the sale of stock in a controlled foreign corporation is treated as a dividend to the extent of the company's untaxed earnings and profits attributable to your holding period. Previously taxed earnings reduce the pool that can be recharacterised, which is another reason the PTEP reconstruction has real cash value.

There is also a trap of omission. US founders sometimes assume the small business stock exclusion is available. It is not — that relief applies to domestic corporations, and a UK limited company cannot qualify however long it is held.

Which obligations survive the move?

A working checklist for the first US return filed after a UK departure, where a company with retained reserves stays behind:

• Form 5471, with the earnings and profits and PTEP schedules properly rolled forward rather than repeated. A missing or substantially incomplete return carries a penalty per company per year and, critically, can hold the statute of limitations open on your whole return.
• FBAR, for the company's bank accounts where you have signature authority, and for any personal UK accounts you kept open after leaving. Signature authority survives relocation; people forget the business accounts far more often than the personal ones.
• Form 8938, where the reporting thresholds are met — and note that those thresholds are lower once you are no longer living abroad, so a US-bound founder can cross into filing without any change in their assets.
• The inclusion computation for the company's tested income, and the associated election if you make one, revisited for the 2026 rule changes.
• Foreign tax credit computations, which change shape once your income mix shifts from UK-source employment to distributions and gains.
• State filings, if you have returned to the United States. Several states do not follow the federal treatment of foreign corporation inclusions, and a founder who has solved the federal position can still have an unexpected state charge on the same reserves.

The failures we see most often after a departure

Departure is the single most common point at which a compliant American founder becomes a non-compliant one. The reasons are mundane rather than aggressive.

• The 5471 simply stops. A new preparer in the destination country does not ask about the UK company, or is told it is "dormant" because no dividends are being paid. Dormancy of cash flow is not dormancy of filing.
• The PTEP schedules are abandoned. The last properly prepared earnings and profits schedule is the one from the year of departure. Everything after it is a copy.
• Business account FBARs are dropped once the founder stops being a UK resident, on the mistaken view that the accounts are the company's problem.
• A dividend is taken and reported as a plain qualified dividend, with full US tax paid on money that was already taxed years earlier — an overpayment rather than an underpayment, and one that is often recoverable on amendment.
• The temporary non-residence position is never considered, because the founder's UK adviser closed the file at departure and nobody re-opens it when they move back.

Where the gap is genuine and non-wilful, the IRS offshore procedures — including the Streamlined Foreign Offshore Procedure for those who meet the non-residency condition — remain the orderly route back. Our streamlined filing team handles these alongside the company reconstruction rather than as a separate exercise, because a streamlined submission that files three years of Forms 5471 without rebuilding the underlying earnings position simply moves the problem forward.

How do you reconstruct a PTEP position years after the event?

This is the work that makes everything else possible, and it is entirely mechanical once the source documents are assembled.

• Pull the company's statutory accounts for every year of your ownership, not just the open years. The reserve you are trying to explain was built across all of them.
• Convert each year's result to US earnings and profits principles — this is not the same as the UK accounting profit, and depreciation, provisions and certain accruals commonly differ.
• Layer each year's inclusion, at the exchange rate used in that year's return, and identify which years carried a section 962 election.
• Roll the pools forward through every distribution actually made, applying the statutory ordering rules.
• Reconcile the closing pool to the balance sheet reserve, and document the difference. The difference is the untaxed layer, and it is the number that determines the tax on any future payout or sale.

Founders are often relieved by the outcome. In a typical UK trading company that has paid corporation tax at mainstream rates throughout, a large share of the reserve turns out to be previously taxed, and the eventual distribution is far less expensive than feared. The cost of not doing the work is paying full US tax on money the US already taxed.

Where this sits in a wider cross-border position

Retained profits are rarely the only thing left behind. Departing founders typically also hold UK pension rights, an ISA that stops being tax-free the moment it crosses the Atlantic in reporting terms, and often UK property. Each carries its own reporting cadence, and each interacts with the company position through the foreign tax credit computation. Our cross-border tax compliance and high net worth teams prepare these as one file for exactly that reason.

Getting the reporting right

If you have left Britain with a UK company behind you and you are not certain that your earnings and profits schedules have been maintained, that is a solvable problem today and an expensive one at the point of a sale or a large distribution. We will review your last three filed returns, tell you plainly whether the PTEP position is documented, and quantify what a future payout would actually cost on both sides of the Atlantic. To start that review in confidence, contact our cross-border team for a confidential consultation.