The Roth IRA that keeps working after you move to Britain

A Roth IRA is a US individual retirement arrangement funded with money already taxed. The IRS describes it as an account where contributions are not deductible and qualified distributions are not taxed. Britain has no direct equivalent.

Because HMRC says so in its treaty notes. The manual states that a distribution from a US individual retirement arrangement to a UK resident is exempt from UK tax to the same extent as it is exempt from US tax. The British treatment therefore borrows its answer from the American one.

That is unusual, and it is why the Roth survives a move when so little else does.

The notes sit in HMRC's double taxation manual alongside its summary of the treaty.

So the question becomes whether the distribution is genuinely exempt in America.

In practice that sentence does a great deal of work. It is the reason an American arriving in Britain with a long-held Roth IRA usually keeps the benefit, while almost every other US-sheltered account loses it on the plane.

Two conditions, and a Roth IRA has to satisfy both. The account must satisfy a five-year rule, and the distribution must meet a qualifying condition such as reaching age 59 and a half, as Publication 590-B sets out. Miss either and the distribution is not qualified, whatever the balance has done since.

The five-year clock runs from the first contribution year.

It does not restart when you move abroad, which is the one piece of good news about timing.

So a long-held account that satisfies the age condition is the straightforward case.

Keep the evidence of both conditions together. A statement showing the first contribution year and a record of your date of birth settle the question in a single page.

Not in the way a statute does, and that distinction matters here. A manual states how HMRC approaches a question. It is strong evidence of the treatment you will meet in practice, and it is not the same thing as settled law.

In our practice we rely on it while documenting the position properly.

That means keeping the account statements that prove the distribution qualified.

So treat the manual as the working answer rather than as a guarantee.

In short, a manual tells you where you stand with HMRC today. It is the most useful thing available on this question, and it is not a statute.

Treaty Article 18 is the provision that deals with pension schemes, and its first paragraph is the one that protects accrued growth from current taxation for a US citizen. It is worth naming precisely, because the paragraphs of that article do different jobs.

The second paragraph, which deals with contributions, does not survive the saving clause for a US citizen in the same way.

Bundling the two together is the most common error we see on this subject.

So read them separately, and take advice on which applies to your facts.

Only out of taxable compensation, which is where most expatriates come unstuck. Contributing to a Roth IRA requires earned income that America can see, and someone who excludes all their salary under the foreign earned income exclusion may have none left for this purpose.

Using the foreign tax credit instead keeps the income visible.

Our comparison of the exclusion and the foreign tax credit covers that choice.

So the decision about which relief to claim quietly decides whether you can keep funding the account.

Also watch the income limits, which apply wherever you live. A high British salary converted into dollars can put a contribution out of reach even where taxable compensation exists.

That is a real decision with a real cost, and it needs modelling rather than instinct. A conversion is taxable in America in the year it happens, and the British treatment of the conversion itself needs separate thought.

A year with low American income can make the arithmetic attractive.

A year with high British tax usually makes it worse.

So the timing matters far more than the principle.

Also think about the five-year clock on the converted amount, which runs separately from the one on your contributions. A conversion late in life can leave money locked behind a condition you had assumed was long satisfied.

On HMRC's stated approach to distributions, tax on a Roth IRA arrives when money comes out rather than as the fund grows. The account itself is not a British wrapper, so none of the UK rules for ISAs or pensions apply to it.

That is a different question from how America treats the investments inside.

Our guide to whether your fund is a PFIC covers the American side of fund holdings.

So the wrapper does the work, and what sits inside it rarely changes the British answer.

Then the pass-through stops working, because there is no American exemption to pass. A non-qualified distribution of earnings is taxable in the United States and can attract an additional tax, and HMRC's approach gives you no British exemption for an amount America is taxing.

Your own contributions come out first under the ordering rules.

So a modest early withdrawal frequently takes contributions rather than earnings.

Still, check the ordering before assuming that, because the arithmetic is specific to your account.

Our guide to the early distribution tax covers how that additional charge works on an American retirement account drawn from Britain.

It changes which protections are available to you, though not the basic pass-through. The saving clause lets America tax its citizens as if much of the treaty did not exist, with named exceptions.

A British citizen with no US status reads the treaty differently.

Our guide to the saving clause explains what it does and does not reach.

So the same account can produce different answers for two people in the same household.

So establish status first. Citizenship, a green card and plain UK residence produce three different readings of the same account, and the treaty has something different to say to each.

Only if a state still claims you, which for most people who have genuinely left is no longer the case. States are not party to the treaty and apply their own rules to retirement income.

A clean break on departure is what prevents the question arising.

Our guide to cutting state tax ties sets out what that involves.

So the federal and treaty analysis is not the whole picture for somebody who left a sticky state.

Our US state tax returns service picks this up where a state still has a claim, which is more common than people expect after a move abroad.

A short sequence before you take anything out.

Carefully, and with the reasoning recorded. A distribution you treat as exempt still belongs in your thinking about the UK return rather than nowhere, and the basis for the treatment belongs in your file.

Our UK Self Assessment service handles the reporting.

Where you rely on a treaty position, documenting it matters as much as claiming it.

So keep the paperwork that shows why the amount was left out.

Also keep the two returns talking to each other. A figure left out of one and reported in the other, with no note explaining why, is the kind of inconsistency that invites a question years later.

Consider an American in Oxford, past sixty, with a Roth opened fifteen years ago and left alone since she moved.

Her Roth IRA distribution qualifies in America, so no US tax arises. On HMRC's stated approach the same amount carries its exemption into Britain.

Her husband, who moved at fifty-two and converted a traditional IRA two years ago, is in a different position entirely, because his conversion was taxable and his clock is shorter.

These facts are illustrative. The pattern is the usual one: two accounts in one household, with completely different answers.

The first treats the Roth IRA exemption as automatic rather than as something that follows the American treatment.

The second takes a non-qualified distribution and expects the British exemption to apply anyway.

The third keeps contributing after claiming the exclusion, leaving no taxable compensation to support the contribution.

The fourth bundles the two paragraphs of treaty Article 18 together, which gives the wrong answer on contributions.

We check the Roth IRA qualification conditions before a distribution rather than after, because the British treatment depends entirely on getting the American answer right.

Where a conversion is on the table, we model both sides in the year it would happen, which is usually what settles the question.

Our double tax treaty relief service covers the ground, and fees stay fixed and agreed in writing. How we work sets out the process.

If you are about to draw on an American retirement account from Britain, talk to us first.