Six exceptions survive. Everything else in the treaty is gone

Figures relate to tax year 2025-26 (UK) · 2025 (US)

There is a short list printed immediately after the saving clause, and it is the only part of the treaty most Americans in Britain can rely on. Everything above it is removed for them.

That list covers relief from double tax, non-discrimination, the dispute process and a handful of pension rules. Two of those entries are worth real money. The rest are procedural.

So the useful exercise is not reading the treaty front to back. It is working out which exceptions apply to you, and what each one actually delivers in practice.

Key takeaways

• Only a listed set of exceptions survives for a citizen.
• Relief from double taxation is one of them.
• Protection for growth inside a UK pension is another.
• The student article is unavailable to citizens and green card holders.
• The foreign earned income exclusion is statutory, so it is untouched.
• Social security sits under a separate agreement entirely.
• A non-American spouse is outside the clause altogether.

Which exceptions survive it?

A set list, printed right after the clause. It covers relief from double tax, non-discrimination, the dispute process and some pension rules. A few items apply only to people who are not long-term residents, which narrows them again.

Some exceptions apply only to people who are not long-term residents, which limits them to recent arrivals. Others apply to everybody.

The list is short enough to read in full, and doing so is worth ten minutes of anybody's time.

What does the pension exception actually give?

Cover for growth inside a British pension, so the fund builds up without a yearly American charge. It covers some contributions too. Without it, you would pay tax on growth in a fund you cannot touch for decades.

Without that exception, an American would face tax on investment growth inside a pension they cannot access for decades. The result would be close to unworkable.

Our guide to employer pension contributions covers the mechanics in detail.

Does it affect the foreign tax credit?

No, and that is deliberate. Relief from double taxation sits on the list of exceptions, so the credit mechanism survives the saving clause entirely and remains open to citizens. That is precisely what stops the same income being taxed twice over in full.

That is what stops the system taxing the same income twice in full. The treaty gives the credit and the clause leaves it alone.

Our guide to Form 1116 income baskets covers how the relief is claimed.

Does it change how you claim the exclusion?

Not at all, because the foreign earned income exclusion comes from domestic American law rather than from the treaty. The saving clause only removes treaty benefits, so anything granted by statute sits outside its reach entirely.

That distinction matters more than people realise. Several of the reliefs Americans abroad rely on most are statutory rather than treaty based.

Our guide to Form 2555 and the exclusion covers how that relief works.

What about social security contributions?

Those sit under a separate agreement entirely, not under the tax treaty, so the saving clause has nothing to say about them. The totalisation arrangement decides which country you pay into.

People conflate the two agreements constantly. They were negotiated separately and they operate independently of each other.

Our guide to the certificate of coverage covers that arrangement.

How does it affect a non-American spouse?

Not at all, unless they elect into the American system. A British spouse with no American status gets the full treaty benefits because the clause simply does not reach them.

That difference can matter when deciding how to hold assets within a couple. The spouse outside the system has options the American one does not.

Our guide to a nonresident alien spouse covers the election and its cost.

What about the student article?

It works for some people and not others. The student exception covers those who are neither citizens nor green card holders, which rules out most people reading this. A British student in America can use it, while an American student here cannot.

A British student in America can therefore use it. An American student in Britain generally cannot.

That asymmetry runs through the whole clause and surprises people who assume treaties work both ways equally.

Does it apply to green card holders?

Yes, in much the same way. The clause reaches green card holders as well as citizens. A tail also covers former ones for a period after they give up status, so a quick exit does not fix it.

There is a nuance for former residents and former citizens, who remain within the clause for a period after giving up status. That tail is designed to stop a quick exit solving the problem.

Our guide to green card holders in the UK covers the wider position.

Can you still claim treaty benefits at all?

Yes, where an exception applies or where the benefit does not rest on an article the clause removes. The pension growth protection is the clearest example. Claiming one normally means disclosing the position on a form attached to your American return.

Claiming one usually means disclosing the position on a form attached to your return. The disclosure explains which article you rely on and why it survives.

Our guide to Form 8833 treaty positions covers the disclosure requirement.

What is the saving clause?

A rule that keeps each country free to tax its own people under its own law, whatever the rest of the treaty says. According to IRS guidance on tax treaties, it turns up in nearly every deal America has signed.

In practice it bites on Americans. Britain taxes where you live, so a British resident gets the benefit anyway. America taxes by passport, and keeps that right.

The effect is that reading an article in isolation is misleading. You have to read it and then check whether the saving clause takes it away.

Why does it exist at all?

Because America taxes by passport, not by address. A treaty that undid that would gut the system. So the clause keeps the home rule while the treaty still works for everyone else.

It also stops a citizen abroad beating someone who never left. That is the policy behind it.

Every modern American treaty contains one. It is not specific to the arrangement with Britain.

A worked example

The figures below are illustrative. They describe a pattern rather than a specific person.

Jane is American and lives in Cardiff. She reads the treaty article on pensions and finds that a pension is taxable only in the country of residence, which would mean Britain alone.

That article is exactly what she hoped for. Her British pension would then escape American tax entirely when she draws it.

The saving clause removes that benefit, because she is a citizen. America taxes the pension payments and gives her a foreign tax credit for the British tax instead.

What survives is the protection on growth inside the fund while she is still working. That exception is specifically listed and genuinely useful.

The main articles and their fate

The table shows what typically survives for an American citizen. Most of the column is unhelpful reading.

Does it reach state taxes?

Treaties bind the federal government. States are not party to them. Many follow the federal line anyway, but several do not, which makes the whole treaty analysis beside the point there.

California is the usual example, taxing income that a treaty exempts federally. The clause is irrelevant there because the treaty never applied in the first place.

Our guide to US state tax for expats covers that separate problem.

Does it affect how HMRC treats you?

Not directly at all. The clause preserves American taxing rights over Americans, while HMRC simply applies British law to British residents whatever passport they hold. The two systems run on separate tracks here.

Where it bites indirectly is on credits. If America taxes something Britain also taxes, the order in which relief is given starts to matter a great deal.

That ordering question is where most cross-border disputes actually arise.

Is there any way around it?

Not by argument. The saving clause is explicit and applies by its own terms, so no reading of the treaty removes it for a citizen. The only genuine route out is to stop being one, which carries its own consequences.

The only route out is to stop being a citizen, which brings its own consequences and its own tail within the clause itself.

Our guide to the exit tax and Form 8854 covers what giving up citizenship involves.

How long has it been in the treaty?

The current deal dates from 2001 and took effect in 2003. The clause has been part of American treaty practice far longer than that. Nothing about it is new, temporary, or likely to change soon.

Periodic talk of reform surfaces whenever citizenship based taxation is debated. None of it has changed the clause so far.

Plan on the basis of the treaty as it stands rather than as it might become.

What should you actually do about it?

Read any treaty article alongside the clause rather than in isolation. That single habit prevents most of the disappointment people experience with this agreement. Then identify the handful of exceptions that genuinely help you, and claim those properly.

Then identify the handful of exceptions that genuinely help you, which for most people means the pension protection and the credit mechanism.

For 2025 the foreign earned income exclusion caps at around $130,000, and that relief comes from domestic law rather than the treaty, so the clause never touches it.

How to check a treaty position

1. Identify the article that appears to give the benefit.
2. Read the saving clause in the same treaty.
3. Check whether you are a citizen or lawful permanent resident.
4. Read the list of exceptions that follow the clause.
5. Confirm whether your article appears on that list.
6. Check whether the exception has a residence condition.
7. Decide whether a disclosure form is required.
8. Keep the analysis with that year's papers.

Mistakes and penalties we see with the saving clause

The first is reading a treaty article and stopping there. The benefit looks real until you reach the provision that removes it.

The second is assuming the pension article exempts your pension income. It exempts growth inside the fund, not the payments you eventually draw.

The third is relying on a treaty position without disclosing it. The disclosure requirement is separate from whether the position is correct.

The fourth is expecting a state to follow the treaty. Several do not, and the federal analysis tells you nothing about them.

How US UK Tax Accountants helps

We work out which treaty positions genuinely survive for you rather than quoting articles that do not apply. Where an exception helps, we claim it and disclose it properly on the return.

Where it does not, we say so early instead of building a plan on a benefit that was never available. Our treaty relief service covers the analysis and the filings.

If somebody has told you the treaty solves your problem, get in touch. It is worth checking which half of the treaty they read.

Last reviewed 14 October 2026. This article is general information and not personal tax advice. Every position turns on its own facts, so take advice on yours before relying on one.