Saving Clause.
Article 1(4) of the US-UK treaty: each country reserves the right to tax its own residents, and the US its citizens, as if the treaty had not come into effect. It is the single most misunderstood sentence in expat tax.
The exceptions are where the relief lives
Because of the saving clause, a US citizen cannot simply claim most treaty benefits against the IRS — the pension article, social security article and a handful of others are specifically excepted, and those exceptions are where real planning happens. Misreading the clause in either direction produces confident, expensive mistakes.
- Lets the US tax its citizens, and each country its residents, as if the treaty were absent
- Pension growth and social security provisions survive it
- Form 8833 discloses positions that rely on the exceptions
What survives, paragraph by paragraph
Article 1(5), as replaced by the 2002 protocol, lists the exceptions. For everyone, including citizens, the clause does not affect Article 9(2), Article 17(1)(b), 17(3) and 17(5), Article 18(1) and 18(5), and Articles 24, 25 and 26.
A second list applies only to people who are neither citizens nor green card holders of the country concerned: Article 18(2), and Articles 19, 20, 20A and 28.
| Provision | What it covers | Survives for US citizens? |
|---|---|---|
| Article 17(1)(b) | Pension amounts exempt in the source country | Yes |
| Article 17(3) | Social security paid to a resident of the other country | Yes |
| Article 18(1) | Growth inside a pension scheme in the other country | Yes |
| Article 18(5) | Certain UK pension contributions of US citizens in the UK | Yes |
| Article 24 | Relief from double taxation | Yes |
| Article 18(2) | Contributions to a scheme in the other country | No, only for non-citizens |
How it plays out in practice
Take American social security paid to a US citizen living in Britain. Article 17(3) allocates it to Britain alone, and because that paragraph survives the saving clause, the IRS cannot tax it. Now take a regular payment from a 401(k): the general pension rule in Article 17(1)(a) is not on the list, so both countries tax it and credits under Article 24 relieve the overlap.
Same person, same treaty, opposite answers. The list decides.
Questions we get about this
No. It removes most treaty benefits for US citizens, but the listed exceptions survive, including relief from double taxation in Article 24, the social security paragraph and important pension paragraphs. Those exceptions are where most cross-border relief for Americans actually comes from.
Yes. Article 1(4) lets each country tax its own residents as if the treaty had not come into effect, and lets the United States also tax its citizens. The citizenship part is what makes the clause so significant for Americans living in Britain.
Article 17(1)(b), which exempts amounts that would be exempt in the source country, and Articles 18(1) and 18(5), covering growth inside schemes in the other country and certain UK contributions of US citizens. The general pension rule and the lump-sum rule do not survive.
Often yes. Treaty-based return positions are generally disclosed on Form 8833, although some are exempt from disclosure. Check whether your position requires it before filing, because the disclosure has its own penalty if missed.
Related pages
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The Foreign Bank Account Report — FinCEN Form 114 — and its $10,000 aggregate trigger.
- Who we help
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Retiring across the Atlantic: pensions drawn cross-border, Social Security, state pension and lump sums under the treaty.
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Free checker: answer six questions to see whether the Streamlined Foreign or Domestic Offshore route fits your catch-up - and what each would cost.
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What US and UK tax specialists handle that a general accountant does not: residence tests, treaty relief, FBAR, PFICs, pensions, property and catch-up filings.
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US and UK tax treaty
The US-UK double tax treaty explained: residence tie-breakers, the saving clause, pensions and dividends articles, and how relief is actually claimed.
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US federal returns
Form 1040 preparation for Americans abroad: FEIE, foreign tax credits, treaty positions and every schedule your situation requires.
Further reading
- The treaty gives royalties to one country. Your passport gives them back.
Article 12 is one of the tidiest provisions in the treaty. For an American living in Britain, the saving clause unpicks it, and a different article puts it back together.
- The treaty article that exempts visiting academics, and the citizens it leaves out
A two-year exemption for visiting professors sounds generous, and it is. Whether it reaches you depends on your passport rather than on your post.
- A British pension, an American return, and one treaty paragraph
One paragraph of the treaty covers social security, and it survives the saving clause. Whether it helps you depends entirely on which country you live in.
Last reviewed . Thresholds and rates change annually — check figures against the current tax year before relying on them.
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