Introduction: Why US ETFs Are Out of Reach for Americans in Britain
US ETFs are the one mainstream investment that works under American tax law for a US citizen, yet almost no British broker will let a UK resident buy them. That single contradiction shapes the whole portfolio of a wealthy American in London. Furthermore, it produces a chain of filing mistakes on both sides of the Atlantic that we see every week.
At TaxYork, we prepare US and UK tax returns for American bankers, fund partners, lawyers and company owners who live in Britain. In our experience, the problem rarely starts with tax. Instead, it starts on a broker's order screen, where a purchase is refused and the investor reaches for whatever the platform does allow. As a result, the tax damage arrives later and in silence.
This guide explains why the block exists, what changed when Britain replaced the old disclosure rules in 2026, which access routes still work, and how both countries tax the holding. It also sets out the reporting that goes missing, and it closes with a worked case study using real figures.
What US ETFs Are and Why They Matter to an American
US ETFs are exchange-traded funds organised and registered in the United States, listed on an American exchange and supervised by the Securities and Exchange Commission. The regulator's own primer on mutual funds and exchange-traded funds describes the structure well. For most investors, domicile is a footnote. For an American, however, it is the whole point.
The reason sits in the passive foreign investment company rules. A fund incorporated outside the United States almost always meets the income or asset test in section 1297 of the Internal Revenue Code. Consequently, the Irish and Luxembourg funds that fill every British platform are punitive for a US citizen. A fund domiciled in America is a domestic corporation, so those rules never apply to it.
The Two-Sided Squeeze
Britain creates the mirror-image problem. HMRC treats every non-UK fund as an offshore fund, and it taxes the gain as income at up to 45 per cent unless the fund holds reporting fund status. Therefore, an American in London needs a fund that is domestic for the IRS and approved for HMRC at the same time.
Only a narrow group of products passes both tests, and that group consists largely of US ETFs with UK reporting status. Importantly, the British broker then refuses the order. The squeeze is not a tax rule at all. Rather, it is a consumer disclosure rule, and understanding it is the first step.
Why UK Brokers Block the Purchase
A British platform blocks a purchase of US ETFs because of product disclosure law, not because of anything in the tax code. Moreover, the block applies to every retail client in Britain, British or American. The difference is that a British investor has an easy substitute, while a US citizen does not.
The PRIIPs Rule That Started It
From 1 January 2018, the PRIIPs Regulation required a short Key Information Document before any packaged investment could be sold to a retail investor. The document had a fixed format, including forward-looking performance scenarios. American fund managers declined to produce it, largely because those projections sit uneasily with US securities law.
As a result, platforms removed US ETFs from retail accounts almost overnight. Notably, the rule governed the sale, not the ownership. An investor who already held a position could keep it and sell it. However, that investor could not add to it.
What the 2026 Consumer Composite Investments Regime Changed
Britain has now replaced that framework. The Financial Conduct Authority published its final rules for Consumer Composite Investments in December 2025. The underlying legislation commenced on 6 April 2026, and a transition period runs until 8 June 2027. During that window, a manufacturer may either adopt the new product summary or continue with the old documents.
Many investors expected the reform to reopen the door to US ETFs. So far, it has not. Under the new rules, the manufacturer alone is responsible for producing the product summary, and a distributor may not write its own or sell without one. Therefore, an American fund sponsor must still choose to produce a British document for a market it does not actively serve. Most have not done so.
Why the Block Persists
Disclosure is only one of the locks. Additionally, a platform must satisfy the Consumer Duty, which makes it answerable for outcomes when retail clients buy dollar-denominated products with American tax consequences. Many platforms therefore keep the restriction as a matter of policy, whatever the disclosure rules permit.
American clients face one more hurdle. A British platform that accepts a US person takes on FATCA due diligence and American information reporting. Consequently, several platforms refuse US citizens altogether. The honest position in late 2026 is this: do not plan around the retail market opening up, and confirm the current policy with any broker before you move assets.
The Routes That Still Work
Four routes to US ETFs remain in practice, and each carries a different tax and reporting footprint. Furthermore, the right choice depends on the size of the portfolio and on where you intend to live in ten years. We prepare the returns that follow each route, so we see the consequences of all of them.
Keeping and Transferring Existing Positions
The simplest route is the one you already have. If you arrived in Britain holding US ETFs, you may generally keep them. Moreover, a position can usually move in kind between custodians, because a transfer is not a sale to a retail client.
The danger lies with the American custodian. Many US brokerages restrict or close accounts once the address changes to a British one. Our guide to US brokerage account restrictions for UK residents explains how a forced liquidation crystallises gains in both countries at once. Therefore, settle the custody question before you update your address, not after.
Elective Professional Client Status
The disclosure rules protect retail clients only. Accordingly, a client who is categorised as a professional falls outside them, and a broker may then execute orders in US ETFs. The test sits in the FCA's client categorisation rules.
At present, the firm must first judge your expertise and experience. In addition, you must meet two of three measures. The first is an average of ten significant trades a quarter over the last four quarters. The second is a portfolio of cash and financial instruments above 500,000 euros. The third is at least one year of professional work in the financial sector in a relevant role. Many of our clients in banking and private equity clear all three.
The status has a price, however. You give up retail protections, and the firm is under no obligation to offer the opt-up at all. Furthermore, the regulator consulted on reshaping the test, including a proposed wealth route for clients with 10 million pounds of investable assets. Check the rules in force when you apply.
A Manager Regulated in Both Countries
The third route is a discretionary manager authorised in Britain and registered in the United States, usually with custody on an American institutional platform. The manager makes the investment decisions, and the portfolio holds US ETFs chosen for their British tax status. Our article on the US tax treatment of a discretionary managed portfolio covers the annual reporting in detail.
This route suits larger portfolios, and it normally solves the custody problem at the same stroke. Nevertheless, it does not remove any tax. It simply produces statements that both tax returns can use.
The Routes to Avoid
Some investors try to acquire the shares through option assignment, because an exercised option delivers the fund without a purchase order. Brokers have closed that gap repeatedly, so it is unreliable. Similarly, a contract for difference or a spread bet on an American fund gives price exposure but ordinary income treatment in the United States.
The most damaging substitute is the obvious one. The platform offers an Irish fund tracking the same index, and the investor accepts it. For a British client that is sensible. For an American, in contrast, it converts a clean holding into a passive foreign investment company with a filing for every fund, every year.
How Britain Taxes US ETFs
HMRC taxes US ETFs as offshore funds, and three features drive the result. Specifically, they are reporting fund status, the character of distributions, and the sterling computation of the gain. Each one differs from the American treatment of the same holding.
Reporting Fund Status Decides the Rate
A gain on a fund without reporting status is an offshore income gain. HMRC charges it to income tax at up to 45 per cent, and the 3,000 pound annual exempt amount does not shelter it. Moreover, HMRC's investment funds manual confirms that a loss on such a fund is treated as nil for income purposes.
With reporting status throughout your period of ownership, the gain is a capital gain. The capital gains tax rates for 2026/27 are 18 per cent within the basic rate band and 24 per cent above it. Many of the largest US ETFs appear on HMRC's list of reporting funds, but status attaches to a share class and to specific periods. Therefore, check the entry and the start date before you buy. Our guide to reporting fund status for American portfolios covers the regime in depth.
Distributions Are Dividends, Even When America Calls Them Gains
HMRC taxes a distribution from an equity fund as a foreign dividend. The dividend tax rates for 2026/27 are 10.75 per cent, 35.75 per cent and 39.35 per cent, after a 500 pound allowance. Additionally, a fund that holds mostly bonds pays distributions that Britain taxes as interest, at up to 45 per cent today and 47 per cent from April 2027.
A character mismatch follows. Occasionally an American fund pays a capital gain distribution, which the IRS taxes at long-term rates. Britain, however, sees a dividend and charges up to 39.35 per cent. Consequently, the same payment carries two labels, and the foreign tax credit computation must reconcile them.
Excess Reportable Income and the Sterling Gain
A reporting fund must tell investors each year how much income it earned but did not distribute. You pay tax on that excess reportable income as if you had received it, on a date six months after the fund's year end. US ETFs distribute nearly all their income, so the figure is often small. Nevertheless, you must look it up, declare it, and add it to your base cost.
The gain itself is computed in sterling. HMRC converts the purchase price at the rate on the day you bought and the proceeds at the rate on the day you sold. As a result, a fund that rose 10 per cent in dollars can show a 20 per cent gain in pounds, or a loss. Furthermore, Britain pools your shares at an average cost, whereas America tracks individual lots. Our article on wash sale rules and the British 30-day rule shows how far the two computations drift apart.
How the United States Taxes the Same Holding
America taxes a citizen on worldwide income wherever that citizen lives, so the same fund appears on Form 1040 every year. Fortunately, this is the simple side. The complexity lies in how the two countries share the tax.
No PFIC Regime and No Form 8621
Because US ETFs are domestic regulated investment companies, the excess distribution rules in section 1291 never touch them. You file no Form 8621. Dividends are generally qualified dividends, as the IRS explains in its topic on dividends, and a gain after more than one year is a long-term gain. Both attract a top federal rate of 20 per cent.
Who Taxes the Dividend First
An American dividend paid to an American in London is US-source income, and the ordinary foreign tax credit would give no relief for the British tax on it. The US-UK tax treaty solves this in Article 24(6). First, Britain gives credit for the American tax, but only for the 15 per cent that a non-citizen would pay under Article 10. Next, America credits the remaining British tax against its own charge above that 15 per cent, and it re-sources the income to make that work.
For an additional-rate taxpayer, the arithmetic is precise. America keeps 15 per cent. Britain collects 39.35 per cent less the 15 per cent credit, which is 24.35 per cent. The American tax above 15 per cent disappears under the credit. However, the 3.8 per cent net investment income tax remains, because no foreign tax credit applies against it. The combined rate is therefore 43.15 per cent. You claim the relief on Form 1116 with a treaty disclosure, and our tax treaty optimisation service prepares exactly this computation.
Sourcing the Gain
A gain on the sale of US ETFs works differently. Under section 865, a citizen whose tax home is abroad treats the gain as foreign-source, provided a foreign country taxes it at 10 per cent or more. British capital gains tax at 24 per cent clears that test. Consequently, the British tax credits against the American tax on the same gain, and only the net investment income tax is left over.
The Missed Reporting That Follows
The block on US ETFs does not only shape the portfolio. It also produces three distinct reporting failures, and we meet all three in new client files. Each one is avoidable once you see where it comes from.
American Funds in a British Account Are a Foreign Account
Many investors assume that US ETFs need no foreign reporting. That is wrong when the custodian is British. The account, not the asset, drives the filing. Therefore, a London brokerage account holding only US ETFs belongs on the FBAR once your foreign accounts together exceed 10,000 dollars at any point in the year.
The same account goes on Form 8938 when your specified foreign assets pass the thresholds. For a single filer living abroad, those are 200,000 dollars at year end or 300,000 dollars at any time. Joint filers double both figures. In contrast, the same funds held with an American custodian need neither form. Our FBAR and FATCA reporting service covers both filings.
The Substitute Fund Nobody Reported
The second failure is larger. After the refused order, the investor buys the Irish equivalent and files as before. Each such fund then requires its own Form 8621 every year. Moreover, without an election, a sale is taxed under the excess distribution rules at the highest ordinary rate, with an interest charge on top.
Most people discover this years later, when the positions have grown. By then, the cost of the missing forms and the cost of the default tax treatment have both compounded. Accordingly, the review of a new client's British platform statements is the first thing we do.
The British Side: Income You Never Saw
The third failure sits on the British return. Excess reportable income does not appear on a broker's dividend summary, so it never reaches the foreign pages of the Self Assessment return. Similarly, investors report dollar gains converted at a single year-end rate, which is not the method HMRC requires.
If you have missed US tax returns, a missed FBAR, or missed reporting on a British investment account, the errors can usually be corrected in an orderly way. The IRS Streamlined Filing Compliance Procedures exist for non-wilful cases, and our IRS Streamlined Filing service prepares the full package. The British return has its own correction routes.
Case Study: One Million Dollars, Three Possible Outcomes
Consider an illustrative client, Rachel, an American managing director at a London private equity firm. She is an additional-rate taxpayer in Britain and in the top American bracket. In 2021 she invested 1,000,000 dollars, qualified as an elective professional client, and bought a broad American equity index fund through a British broker. The exchange rate was 1.25 dollars to the pound, so her sterling cost was 800,000 pounds.
The Dividend Year
In one year the fund pays 13,000 dollars of qualified dividends. America keeps 15 per cent, or 1,950 dollars. Britain charges 39.35 per cent, or 5,116 dollars, and credits the 1,950 dollars, leaving 3,166 dollars. The net investment income tax adds 494 dollars. Her total is therefore 5,610 dollars, or 43.15 per cent, split across two tax authorities.
The Sale With Reporting Fund Status
In 2026 she sells for 1,400,000 dollars at a rate of 1.35, which is 1,037,037 pounds. Her British gain is 237,037 pounds. After the 3,000 pound exempt amount, capital gains tax at 24 per cent is 56,169 pounds, or 75,828 dollars.
Her American gain is 400,000 dollars, and the tax at 20 per cent is 80,000 dollars. The British tax credits against it, leaving 4,172 dollars. The net investment income tax adds 15,200 dollars. Her combined bill is therefore 95,200 dollars, or 23.8 per cent of the dollar gain.
The Same Sale Without It, and the Irish Alternative
Now assume the fund had no reporting status. Britain taxes 237,037 pounds as income at 45 per cent, which is 106,667 pounds, or 144,000 dollars. The American tax of 80,000 dollars is fully credited, and the net investment income tax is still 15,200 dollars. Her bill rises to 159,200 dollars. The missing status costs 64,000 dollars, and the surplus credit may never find a use.
Finally, assume she had accepted the Irish fund her platform offered. Without an election, America taxes the 400,000 dollar gain under the excess distribution rules at 37 per cent, which is about 148,000 dollars before the interest charge. Additionally, she owes five years of Form 8621. The comparison is stark: the right fund in the right account costs 95,200 dollars, and the convenient substitute costs far more.
Rachel also had a filing gap. She had never listed the British brokerage account on her FBAR or Form 8938, because she believed US ETFs were American assets. We prepared the late filings alongside her returns.
How TaxYork Can Help
TaxYork provides comprehensive US and UK tax return preparation for Americans in Britain who hold US ETFs and other investments on either side of the Atlantic. We review platform statements fund by fund, confirm domicile and British reporting status, and identify every holding that needs Form 8621. Furthermore, we compute gains twice, in dollars by lot and in sterling by pool, so that both returns agree with the facts.
Our team also prepares the treaty-based dividend credit, the FBAR, Form 8938 and the foreign pages of the British return. Where earlier years contain missed reporting, we prepare the catch-up filings as one coordinated project. Our US tax return preparation for expats sits alongside our British compliance work, so one team sees the whole picture.
Conclusion
The tax code favours US ETFs for an American in Britain, and the British rulebook still keeps them off the retail order screen. The 2026 reform changed the document, not the outcome. Therefore, access today depends on existing holdings, professional client status or a manager regulated in both countries.
Tax follows the route you choose. With reporting status, a sale costs roughly 24 per cent across both countries. Without it, the rate approaches 40 per cent. Meanwhile, the substitute fund on a British platform creates the worst result of all, together with years of missing forms. Above all, remember that a British account is a foreign account, whatever it holds.
Contact Us
If you hold US ETFs through a British account, or you bought European funds after a refused order, speak to our team before the next filing deadline. You can book a consultation with our US-UK specialists, email hello@taxyork.com, or call 020 3488 8606. We will review your statements and prepare both returns correctly.
Disclaimer
This article provides general information about the regulatory access to, and the US and UK taxation of, US-domiciled exchange-traded funds as at October 2026. It does not constitute tax, legal, investment or financial advice, and it is not a recommendation to buy or sell any investment or to seek any client categorisation. Tax rules, regulatory rules, rates and exchange rates change frequently, and the correct treatment depends on your personal circumstances. The case study is illustrative, uses assumed figures and simplified calculations, and does not describe a real client. Please obtain professional advice tailored to your situation before acting.