American Teacher UK Tax: Teachers, Academics and NHS Staff, Pensions and Treaty Articles

American teacher UK tax works like this: a US citizen teaching in a UK school or university, or working for the NHS, pays UK income tax and National Insurance on the salary and also files a US return, using foreign tax credits or the foreign earned income exclusion to avoid paying twice. Article 20A of the treaty can make a short teaching visit free of UK tax, but no treaty article removes the US filing.

Teachers, lecturers, researchers, nurses and doctors make up a large share of the Americans working in Britain, and most of them are employed in the public sector. That matters, because the US-UK income tax treaty has two articles written for exactly these jobs: Article 19 on government service and Article 20A on teachers. Both are routinely misread. People assume that a treaty article about public pay or visiting teachers means the US cannot tax them. For a US citizen, that is almost never true.

This guide covers the UK tax on the salary, the treaty articles that do and do not help, the Teachers' Pension Scheme and NHS Pension Scheme on a US return, and what happens when you retire. Treaty references are to the 2001 UK-USA Double Taxation Convention as amended by the 2002 Protocol, published on GOV.UK. US figures are for tax year 2026 and come from IRS.gov, linked where they appear. Our US tax services for Americans in the UK page explains how we handle both returns together.

How is an American teacher taxed in the UK?

An American teacher employed in the UK is taxed in the UK exactly like a British colleague. The school, academy trust, university or NHS employer runs PAYE, deducts income tax and Class 1 National Insurance from each payslip, and enrols the teacher in the workplace pension. Nationality plays no part in the UK calculation; residence and the place of work do.

Because the US taxes by citizenship, the same teacher also files a US Form 1040 every year, reporting the UK salary in dollars. The US return rarely produces a large bill for a UK-taxed salary, but it has to be filed, and the UK tax has to be claimed correctly for that to be true. National Insurance does not help here: IRS Publication 514 says no deduction or credit is allowed for social security taxes paid to a country with which the US has a social security agreement, and the UK is one. Our guide to National Insurance for Americans in the UK covers the rates and the totalization agreement.

Who this guide is for

• US citizens and green card holders teaching in UK state schools, academies or independent schools.
• American lecturers, researchers and postdocs at UK universities, including visiting academics on fixed-term contracts.
• American doctors, nurses and allied health professionals employed by NHS trusts and other public bodies.
• Americans who have already left these jobs and are drawing, or will draw, a UK public-service pension.

Does the US-UK tax treaty teacher exemption apply to Americans?

Sometimes, and only on the UK side. Article 20A of the treaty says a professor or teacher who visits the UK for a period not exceeding two years to teach or research at a university, college or other recognised educational institution, and who was resident in the US immediately before the visit, is exempt from UK tax on that teaching or research pay for up to two years from first arrival.

The conditions are strict, and each one is a common failure point:

1. Resident in the US immediately before the visit. An American who was already living in the UK, or who arrived from a third country, does not qualify.
2. A visit not exceeding two years. The test is the visit itself, not just the tax-free period. A permanent appointment does not qualify from the start.
3. Teaching or research at a recognised educational institution. The treaty names universities and colleges; whether a particular school counts as an "other recognised educational institution" is worth settling with HMRC before relying on it.
4. Research in the public interest. Paragraph 3 says research income qualifies only if the research is not undertaken primarily for the benefit of a private person.
5. Not a UK citizen or permanent resident. The UK's own saving clause lets it tax its residents as if the treaty did not exist, and Article 1(5)(b) preserves Article 20A only for people who are neither UK citizens nor admitted for permanent residence in the UK.

Paragraph 2 of Article 20A lets the UK give the exemption up front, on current payments, or by withholding tax and refunding it later, "but in either case exemption shall be conditional upon fulfilment of the requirements of paragraph 1". In plain terms: if a one-year visiting post turns into a three-year one, the UK exemption already given can be withdrawn for the whole visit.

Why Article 20A rarely saves an American money

Article 20A stops the UK taxing the teaching pay. It does not stop the US taxing it. Article 1(4) lets the US tax its citizens "as if this Convention had not come into effect", and Article 20A is preserved against that only for people who are not US citizens or green card holders. So a US citizen on a qualifying visit ends up with no UK tax on the salary and full US tax on it, unless the foreign earned income exclusion applies.

For tax year 2026 the IRS sets the maximum foreign earned income exclusion at $132,900 per person. To claim it on Form 2555, the teacher needs a tax home abroad and must pass either the bona fide residence test or the physical presence test of at least 330 full days abroad in any 12 consecutive months, as set out on the IRS foreign earned income exclusion page. A visiting academic who returns to the US for long summers can fail the 330-day test, which leaves the salary taxed by the US with no UK tax to credit.

Illustrative example: a US citizen professor based in Ohio accepts an 18-month visiting post at a UK university, starting on 1 September 2026, and arrives directly from the US. If the university and HMRC accept the Article 20A claim, the salary is paid without UK income tax. On the 2026 US return the professor cannot use the foreign tax credit for that salary, because no UK income tax was paid. The professor instead claims the foreign earned income exclusion once 330 full days abroad within a 12-month period can be shown, which may mean filing after the usual deadline or amending later. If the post is extended to 30 months, the visit has exceeded two years and the UK exemption can be withdrawn from the start.

Article 19: does government service pay change anything for US citizens?

For a US citizen working in the UK, Article 19 changes very little. Article 19(1) says salaries paid from the public funds of a state, a political subdivision or a local authority for services to that state are taxable only in the paying state, with an exception that hands the right to tax to the other state where the work is done there by a resident who is a national of that state. An NHS nurse or a local-authority teacher working in the UK is therefore taxed by the UK on the salary.

The treaty would also say the US cannot tax that pay, but the saving clause overrides it. Article 1(5)(b) preserves Article 19 only for individuals who are "neither citizens of, nor have been admitted for permanent residence in" the state concerned. A US citizen or green card holder therefore gets no US exemption from Article 19 and claims the UK tax as a foreign tax credit instead. Our article on the saving clause in the US-UK tax treaty sets out every exception in full.

One point here works in the teacher's favour. The IRS lists only "pay you receive as an employee of the U.S. government" as falling outside foreign earned income, on its page on what counts as foreign earned income. Salary from the NHS, a UK school or a UK university is not US government pay, so it qualifies for the exclusion and for the foreign tax credit in the normal way.

Foreign tax credit or exclusion for a UK public-sector salary

Most American teachers and NHS staff who pay full UK tax are better served by the foreign tax credit on Form 1116 than by the exclusion. UK income tax on a typical public-sector salary usually exceeds the US tax on the same income, so the credit wipes out the US tax and the excess UK tax can be carried forward. Publication 514 also warns that you cannot take a credit or deduction for foreign tax paid on income you exclude, so mixing the two needs care. Our guide to foreign tax credit relief for UK taxes explains the carryover rules.

American teacher UK tax on pensions: the Teachers' and NHS schemes

Teachers in state schools are usually enrolled in the Teachers' Pension Scheme and NHS staff in the NHS Pension Scheme, both defined benefit public-service schemes. University staff are often in sector schemes instead. Each sits on the US return in two stages: while the pension builds up, and when it is paid.

While you are working: Article 18(5)

Without the treaty, employer contributions to a foreign pension and the growth in a defined benefit promise could be US taxable income each year. Article 18(5) switches that off for a US citizen who is resident in the UK, working for a UK employer, in a job taxed in the UK. Contributions by or for that person are deductible or excludable in computing US taxable income, and employer contributions and benefits accrued are not treated as US taxable income, to the extent they qualify for UK tax relief.

Two limits apply. Article 18(5)(b) caps the relief at what the US would allow its own residents for a generally corresponding US scheme, and Article 18(5)(d) requires the US competent authority to have agreed that the scheme generally corresponds to a US scheme. Article 18 is one of the saving clause exceptions in Article 1(5)(a), so it does protect US citizens. Our guide to UK workplace pensions for US citizens works through the limits for a defined contribution pot.

When you retire: which country taxes the pension

Article 19(2) says a pension paid by, or out of funds created by, a state, political subdivision or local authority for services to it is taxable only in that state, unless the pensioner is both resident in and a national of the other state, in which case only the other state taxes it. Whether a particular scheme is a government service pension depends on who the service was for, so an academy or university pension may fall under the general pensions article, Article 17, instead. For most Americans the answer comes out the same either way:

Your situation at retirement	Government service pension (Article 19(2))	Other UK pension (Article 17(1)(a))
US citizen living in the UK	UK taxes it; the US also taxes it under the saving clause, with a foreign tax credit for the UK tax	UK taxes it as the country of residence; the US also taxes it, with a foreign tax credit
US citizen living in the US	Only the US taxes it, because you are a US resident and national	Only the US taxes it, as the country of residence
UK national (not a US citizen) living in the US without a green card	Only the UK taxes it	Only the US taxes it
UK national living in the US with a green card	The UK taxes it; Article 1(5)(b) lets the US tax it too, with a credit for the UK tax	Only the US taxes it, as the country of residence

To stop HMRC deducting tax from a UK pension once you live in the US, you claim relief on Form US-Individual 2002, published on GOV.UK's USA tax treaties page, with certification of US residence. Until HMRC processes the claim, the pension payer will normally keep deducting UK tax. The UK tax-free lump sum raises separate US questions, covered in our guide to US tax on a UK pension lump sum.

What do American teachers and NHS staff get wrong?

• Treating a treaty article as a US exemption. Articles 19 and 20A limit the UK, or protect non-citizens. A US citizen still reports the salary on the US return.
• Taking the Article 20A exemption on a post that becomes permanent. The two-year limit is a condition of the whole exemption, not a cap on its length.
• Claiming National Insurance as a foreign tax credit. Publication 514 bars it. Only UK income tax goes on Form 1116.
• Leaving the pension out of the US return entirely. Article 18(5) relief is a treaty position, and the pension still appears on the FBAR and, where the thresholds are met, Form 8938.
• Assuming Form 8833 is always needed. The Form 8833 instructions waive reporting where a treaty reduces or modifies the taxation of income from dependent personal services, pensions and other public pensions, or income derived by students, trainees or teachers. Our guide to Form 8833 treaty position disclosure covers the positions that still have to be disclosed.
• Forgetting the FBAR. FinCEN requires an FBAR when foreign accounts together exceeded $10,000 at any time in the year, according to its FBAR guidance. A UK salary account alone often crosses that line.

A filing checklist for an American teacher in the UK

1. Confirm the UK position at the start of the job. Permanent employee: PAYE as normal. Visiting teacher or researcher arriving from the US: test Article 20A before the first payroll run, and diarise the two-year date.
2. Keep the year-end UK documents. The P60 and any P11D show UK pay and tax for each UK tax year from 6 April to 5 April. The US return runs on the calendar year, so two P60s feed each Form 1040.
3. Choose the foreign tax credit or the exclusion. For a UK-taxed salary the credit is usually better; for an Article 20A visitor the exclusion is usually the only relief.
4. Apply Article 18(5) to the pension. Exclude employee and employer contributions within the US limits and record why the scheme qualifies.
5. File the FBAR and check Form 8938. Include UK bank accounts, and take a consistent position on the pension.
6. Plan the exit. Before leaving the UK, decide where you will retire and how the pension will be taxed there, and file Form US-Individual 2002 once you are US resident.

If you also have UK income outside PAYE, such as private tutoring, examining or rental income, you may need a UK Self Assessment return as well. Our US-UK treaty relief service covers the treaty claims on both sides, and our guide for American students in the UK covers the Article 20 position for those who study before they teach.

How US/UK Cross Border Tax helps American teachers and NHS staff

US/UK Cross Border Tax is US CPAs and UK tax advisers working as one team, with offices in London, Manchester, New York and San Francisco. For teachers, academics and NHS staff we test the Article 20A position before the first payslip, prepare the US return with the right mix of foreign tax credit and exclusion, apply Article 18(5) to the Teachers' or NHS pension, and file the FBAR. When you retire, we make the Form US-Individual 2002 claim so UK tax stops at source. Contact us to book a review of your position.