Can a Dual Citizen Renounce US Citizenship? What British-Americans Should Know
How British-American dual nationals renounce US citizenship: the dual-citizen-from-birth exception to the covered expatriate tests, the 10-in-15-years residence condition, why the five-year certification still applies, and what happens to your British citizenship.
For British-Americans born with both nationalities, the decision to renounce often turns on how the birth exception applies to them.
Written by the US UK Tax Experts team, cross-border tax specialists
Dual citizen renounce US citizenship: an introduction
Yes, a British-American can renounce, and when a dual citizen renounce US citizenship questions usually turn to tax. The process is the same as for anyone else: an oath before a US consular officer and a final US tax return. However, dual nationals from birth may benefit from a special exception to the exit tax tests. You keep your British citizenship throughout.
This article explains that exception and the practical steps. Because the exception still requires clean filings, start with our guide to IRS Streamlined filing if you have fallen behind. Our expatriation service covers the final returns and Form 8854.
Who counts when a dual citizen renounce US citizenship decision is made
A dual citizen is someone who holds two nationalities at once. For this article, that means British and American. Some people became dual at birth. For example, a child born in London to an American parent may be a US citizen under 8 USC 1401 and British by birth too. Others became dual later, such as an American who naturalised as British. The difference matters, because only some dual nationals qualify for the tax exception.
Your British citizenship is safe
Renouncing US citizenship does not affect your British citizenship. GOV.UK confirms that dual citizenship is allowed in the UK. Moreover, the US Embassy asks anyone whose renunciation would leave them stateless to contact it before proceeding. Therefore, your British nationality supports the process rather than being put at risk.
Can a dual citizen renounce US citizenship without paying exit tax?
Usually, yes. Most British-Americans are not covered expatriates, so the exit tax does not apply to them. Dual nationals from birth may also escape two of the three tests altogether.
The three covered expatriate tests
A covered expatriate is a former citizen who falls within the exit tax rules. The IRS expatriation tax page sets out three tests. The first is a net worth of $2 million or more on the expatriation date. The second is average annual net income tax above an indexed threshold for the prior five years. Under Revenue Procedure 2025-32, that threshold is $211,000 for 2026. The third is failing to certify five years of US tax compliance.
What the exit tax is
The exit tax is a deemed sale of your worldwide assets on the day before you expatriate. It sits in section 877A of the Internal Revenue Code. Gains above an exclusion amount are taxed as if you had sold. For 2026, Revenue Procedure 2025-32 sets that exclusion at $910,000. Our article on the US exit tax explains the calculation in full.
What is the dual-citizen-from-birth exception?
It is a rule in section 877A(g)(1)(B) that switches off the net worth and tax liability tests for some dual nationals. If you qualify, your wealth and income alone cannot make you a covered expatriate.
The conditions in the statute
The statute sets three conditions. First, you became at birth a citizen of the US and of another country. Second, on the expatriation date you are still a citizen of that other country and taxed as its resident. Third, you were a US resident for no more than 10 taxable years in the 15-year period ending with the year you expatriate. For a dual citizen renounce US citizenship planning starts by testing each condition against the facts.
Born dual, not naturalised
The first condition looks at birth, not at your position today. Therefore, an American who naturalised as British in adult life does not qualify. By contrast, a child born in Bristol to a US father and British mother usually does. Similarly, a child born in New York to British parents often holds both nationalities from birth. Evidence matters here. We usually ask for birth certificates and, where relevant, a Consular Report of Birth Abroad.
Taxed as a UK resident
The second condition requires you to be taxed as a resident of the UK on the expatriation date. UK residence is decided under the statutory residence test. HMRC's RDR3 guidance on the statutory residence test explains how it works. Consequently, a British-American living in Spain would not meet this condition through British citizenship alone.
The 10-in-15-years residence test
The third condition counts years of US residence. The statute uses the definition in section 7701(b)(1)(A)(ii), which is the substantial presence test. In plain terms, it counts years in which you spent enough days in the US. If you grew up in the US and moved to London in your thirties, you may exceed 10 years. However, someone who left the US as a baby will usually pass easily.
Does the exception remove the five-year certification?
No. The exception covers only the net worth and tax liability tests. You must still certify five years of compliance on Form 8854, or you are a covered expatriate anyway.
Why this catches people out
Many British-Americans assume the birth exception means they owe the IRS nothing. However, the statute refers only to the first two tests in section 877(a)(2). The certification test is separate. Therefore, a dual national who has never filed is exposed, even with modest wealth. In our experience, this is the most common mistake when a dual citizen renounce US citizenship plan is made without advice.
How to become compliant
For most non-wilful filers abroad, the route is the Streamlined Filing Compliance Procedures. Under the foreign offshore version, you file three years of returns and six years of FBARs. Eligible taxpayers who follow the instructions are not charged the usual failure-to-file, accuracy or FBAR penalties. Our article on the Streamlined Foreign Offshore Procedures sets out the steps.
The relief procedures for former citizens
Some dual nationals never filed as US citizens at all. For them, the IRS offers relief procedures for certain former citizens. You must have no filing history as a US citizen or resident. Additionally, your net worth must be under $2 million and your aggregate tax $25,000 or less for the expatriation year and the five years before. Every condition must be met, so we check each one before recommending this route.
How does a dual citizen renounce US citizenship in practice?
You follow the same embassy steps as any other American. The difference lies in the evidence of your second nationality and the tax tests you prepare for.
The embassy process
The US Embassy London runs a waitlist for renunciation appointments. It warns that the wait may be several months. You complete Form DS-4079, attend a final interview and take the oath under 8 USC 1481. The fee is $450, payable after you sign. Our overview of how to renounce US citizenship from the UK covers each step.
Form 8854 for dual nationals
Form 8854 is the expatriation statement filed with your final US return. The Instructions for Form 8854 include a section on the exception for dual citizens. If you claim it, you still complete the certification and give details of your other citizenship. Furthermore, failing to file Form 8854 can bring a $10,000 penalty. Our guide to Form 8854 explains each part.
FBARs before you leave
An FBAR is the annual report of foreign accounts filed with FinCEN. According to the IRS FBAR page, you file one when your foreign accounts together exceed $10,000 at any time in the year. Most British-Americans meet that easily through a current account and an ISA. Consequently, FBARs form part of almost every catch-up we prepare.
What other tax points arise when a dual citizen renounces?
Three points come up often: US income after you leave, gifts within the family, and the timing of the final year. None of them stops a renunciation, but each needs planning.
US income after renouncing
Renouncing ends US tax on your UK income. However, the US can still tax US-source income paid to a nonresident. US-source income is income that arises in the US, such as dividends from US companies or rent from a US property. Typically, US payers withhold tax on it at source. Therefore, if you keep a US brokerage account, tell the provider you are no longer a US person. Usually, that means giving it Form W-8BEN in place of your old Form W-9.
Gifts and inheritances within the family
Many British-Americans have parents or siblings who remain American. If you are not a covered expatriate, your later gifts to them follow the normal rules. By contrast, gifts and bequests from a covered expatriate to a US person can be taxed on the recipient under section 2801. Consequently, when a dual citizen renounce US citizenship plans involve family in the US, staying outside the covered expatriate rules protects them too.
Timing the final year
Your final US return is a dual-status return for the year you take the oath. A dual-status return covers part of the year as a citizen and part as a nonresident. Meanwhile, the UK tax year runs from 6 April to 5 April, so the two years never line up. In our experience, it helps to map your UK income by month in the final year. That way, the US return captures only the income earned before the oath. Furthermore, the UK return carries on unchanged, because UK tax depends on residence, not nationality.
Records to keep afterwards
Keep a copy of your Certificate of Loss of Nationality, your final return and Form 8854. Banks sometimes ask former citizens to prove they are no longer US persons. Additionally, these records answer any later IRS query about your expatriation date. When a dual citizen renounce US citizenship file is complete, it should tell the whole story in one place.
An example: two siblings, two outcomes
Consider a typical case. Oliver and Grace are siblings with an American father and a British mother. Both were born in London and hold both nationalities from birth. Each has a net worth above $2 million, mostly in property and pensions. Neither has filed US returns.
Oliver has always lived in the UK. He catches up through Streamlined, then renounces. Because he meets all three conditions of the birth exception, his wealth does not make him a covered expatriate. His Form 8854 certifies five compliant years, so he owes no exit tax.
Grace, however, worked in New York for 12 years before returning. She fails the 10-in-15-years test. Therefore, her net worth makes her a covered expatriate, and the deemed sale applies above the exclusion. This is an illustrative example, not a real case. It shows why each dual citizen renounce US citizenship decision rests on the facts.
Should a dual citizen renounce US citizenship at all?
That is a personal decision, and we do not advise on it. What we can do is prepare the numbers, so you know the tax outcome before you decide.
What you give up
Renunciation is irrevocable. You lose the right to live and work in the US without a visa. You may also need an ESTA or visa to visit. However, a renunciation does not stop you inheriting from US family, although gifts from a covered expatriate can be taxed on the US recipient.
What you gain
After renouncing, you stop filing US returns on your UK income. Your ISAs and UK funds no longer create US tax problems. Moreover, UK banks stop reporting you under FATCA. For many people who weigh whether a dual citizen renounce US citizenship step is right, that simplicity is the main reason.
How US UK Tax Experts can help
US UK Tax Experts prepares US and UK returns together, from one file so the two agree. For British-Americans, we test the birth exception against your records and your residence history. We then prepare the catch-up returns, FBARs, final dual-status return and Form 8854. Throughout, we explain the numbers rather than steer the decision. Nationality questions themselves are for an immigration adviser.
Conclusion
A dual citizen can renounce US citizenship through the London Embassy like any other American. If you were dual from birth, still live in the UK and spent no more than 10 of the last 15 years resident in the US, your wealth cannot make you a covered expatriate. However, the five-year certification still applies. Get the filings right, and the exit tax rarely arises.
Contact us
If you are a British-American thinking about renouncing, email hello@usuktaxexperts.com or use our contact form. Tell us where you were born, when you last filed a US return and roughly how many years you lived in the US. We reply within one working day.
Frequently asked questions
Yes. Renouncing US citizenship does not affect your British citizenship, and the UK allows dual nationality. Holding British nationality also means the renunciation does not leave you stateless, which the US Embassy treats as a special case.
It is a rule in section 877A(g)(1)(B) that switches off the net worth and tax liability tests for some dual nationals. You must have been a citizen of both countries from birth, still be a citizen and tax resident of the other country, and have been a US resident for no more than 10 of the last 15 tax years.
No. The exception does not cover the third test, which is certifying five years of US tax compliance on Form 8854. If you cannot certify, you are a covered expatriate even if you qualify for the birth exception.
No. The exception requires you to have become a citizen of both countries at birth. An American who later naturalised as British is tested under the ordinary net worth and tax liability tests instead.
The consular fee at the US Embassy London is $450. When a dual citizen renounce US citizenship case involves missing returns, you also pay any US tax and interest the catch-up returns show, although many UK residents owe little because of UK tax credits.
You will travel as a British citizen, so you use the same entry routes as other British visitors, such as ESTA where eligible. You lose the automatic right to live and work in the US.
