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Tax Guide
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Tax treaty between the US and UK

Tax treaty between the US and UK

For US citizens residing in the UK, understanding the intricacies of the US-UK tax treaty is paramount.

This treaty, a bilateral agreement between two of the world's major economies, serves as a protective shield against the complexities of international taxation. At its core, the treaty aims to prevent the double taxation of income, ensuring that US citizens aren't unduly burdened by the tax systems of both nations.

Beyond its primary provisions, the treaty also offers a plethora of benefits, from reduced withholding tax rates to specific guidelines on tax residency.

This article delves deep into the treaty's nuances, offering clarity on its key components and guiding US citizens on how to leverage its benefits effectively.

Importance of the treaty for US citizens living in the UK

The tax treaty between the US and the UK is of significant importance for US citizens living in the UK. Why?

Firstly, it helps to prevent double taxation of income. Without the treaty, a US citizen living in the UK could be taxed on the same income by both the US and the UK governments. This is because the US taxes its citizens on their worldwide income, regardless of where they live, and the UK taxes individuals on the income they earn while residing in the UK.

The treaty provides relief from this double taxation by allowing individuals to claim a credit for taxes paid in the other country.

Secondly, the treaty provides for reduced withholding tax rates on certain types of income such as dividends, interest, and royalties. This benefits US citizens who have investments in the UK as it reduces the tax burden on the income generated from these investments.

Lastly, the treaty includes provisions that help to define the tax residency status of individuals and businesses. This is important for determining which country has the right to tax specific types of income and helps to prevent conflicts between the two countries' tax laws.

How to claim treaty benefits

To take advantage of the benefits offered by the US-UK tax treaty, US citizens residing in the UK are required to submit a US tax return, and depending on the specific benefits sought, additional forms may be necessary:

  • For the Foreign earned income exclusion, Form 2555 must be included with the tax return.
  • The Foreign tax credit requires the submission of Form 1116.
  • To obtain reduced withholding tax rates on dividends, interest, and royalties, it may be necessary to provide the income payer with specific documentation, such as a completed Form W-8BEN.
  • For certain treaty-based positions, Form 8833 should be filed.

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Additional information on the US-UK tax treaty

While many are aware of its primary provisions, there are intricate details within the treaty that deserve attention. Let's delve deeper into some of these lesser-known yet crucial aspects.

Saving Clause

The Saving Clause is a standard provision in many US tax treaties, including the one with the UK. Its primary function is to ensure that each country retains the right to tax its own citizens and residents as if the treaty did not exist.

There are, however, specific exceptions to this clause. In essence, while the treaty provides various benefits and protections, the Saving Clause ensures that the US, for instance, can still tax its citizens living in the UK on their global income.

Similarly, the UK retains the right to tax its residents living in the US on their worldwide income. It's a clause that ensures that the primary taxing rights of each country over its own citizens are preserved.

Article 17 US taxation on UK pensions

Article 17 of the US-UK tax treaty specifically addresses the taxation of pensions, social security, and other similar types of remuneration.

As per the treaty's stipulations, pensions and other related remuneration paid to a resident of one contracting state (like the US) due to past employment are typically taxable only in that state.

However, an exception exists: the treaty allows the source country (in this case, the UK) to tax its own citizens on their pensions as though the treaty wasn't in effect, which ties back to the principles of the Saving Clause.

This means a US citizen receiving a UK pension might be subject to taxation in both countries, but provisions exist within the treaty to mitigate the effects of double taxation.

Pro Tip:  A credit for UK taxes paid on the pension can also be claimed on the US tax return by filing Form 1116, mentioned above.


The US-UK tax treaty is an essential tool for US citizens living in the UK, offering protection against double taxation, reduced withholding tax rates, and clarity on tax residency. While the treaty provides numerous benefits, claiming them requires understanding and filing specific forms.

Given the treaty's complexities, it's recommended to consult with tax professionals or the IRS for proper guidance. This treaty not only simplifies tax processes but also ensures that citizens are not overburdened by the tax systems of both countries.