Renounce US Citizenship From the UK: Process, Costs, Timeline and Tax

To renounce US citizenship from the UK, you join the US Embassy London waitlist, swear an oath of renunciation in person, pay a $450 fee and wait for the State Department to approve a Certificate of Loss of Nationality. The tax side matters as much as the oath: without five years of US filings, you leave as a covered expatriate.

How do you renounce US citizenship from the UK?

Renunciation is done in person before a US diplomatic or consular officer outside the United States. Under section 349(a)(5) of the Immigration and Nationality Act, the State Department says a person must appear in person and sign an oath of renunciation at a US embassy or consulate. Nobody can do it on your behalf, and the US Embassy London notes that a parent or guardian cannot take the oath for someone else.

The US Embassy London's published process runs in four steps:

1. Read the legal effects. The embassy asks applicants to review the State Department and IRS material first, including Form 8854 and its instructions, because loss of nationality is irrevocable.
2. Join the waitlist. When your name reaches the top, the embassy emails the next steps: the documents to send and an initial interview conducted by email. You complete the applicable sections of Part I of Form DS-4079, the Questionnaire on Loss of United States Nationality, but nothing in Part II.
3. Attend the final interview. You bring the originals of every document you emailed, sign Part II of Form DS-4079 in front of the consular officer, and pay the fee if you decide to go ahead.
4. Wait for the Certificate of Loss of Nationality. The State Department reviews each case and the embassy emails you with the decision.

The London embassy handles cases for England and Wales; people in Northern Ireland and Scotland contact the consulates in Belfast and Edinburgh. The embassy asks minors, anyone who would become stateless, and anyone needing an interpreter or support to email its renunciation team before starting.

How much does it cost to renounce US citizenship?

The government fee is now modest. A State Department rule published in the Federal Register on 13 March 2026 cut the fee for processing a Certificate of Loss of Nationality from $2,350 to $450, with effect from 13 April 2026. The US Embassy London describes the $450 as non-waivable and non-refundable, payable immediately after you sign, and not refunded if the request is denied.

The fee is rarely the main cost. The full picture looks like this:

Cost	Who it applies to	Notes
State Department fee	Everyone	$450 for appointments from 13 April 2026
Catch-up US returns and FBARs	Anyone behind with US filings	Needed to certify five years of compliance on Form 8854
Final dual-status return and Form 8854	Everyone who expatriates	Filed for the tax year that includes the expatriation date
Exit tax under section 877A	Covered expatriates only	Deemed sale of worldwide assets; gains above $910,000 are taxable for 2026
Penalty for not filing Form 8854	Anyone who fails to file it	$10,000, unless the failure is due to reasonable cause

Our renounce US citizenship and UK tax service covers the tax work in this table from start to finish.

How long does renouncing US citizenship take?

Allow for most of a year, sometimes more. The US Embassy London says that because of high demand it may take several months before it can offer an appointment, and that State Department review of the Certificate of Loss of Nationality may take several months or more after the oath.

Stage	What happens	Published timing
Waitlist	You register interest with the embassy	Several months before an appointment is offered
Initial interview	Documents and questions handled by email	After you reach the top of the list
Final interview	Oath signed in person, fee paid	Scheduled by the embassy
Approval	State Department decides and the embassy emails you	Several months or more
Final US filings	Dual-status return and Form 8854	Due with the US return for the year of expatriation

The wait for approval does not move your tax date. The Form 8854 instructions treat a citizen as relinquishing citizenship on the date they renounced before a diplomatic or consular officer, provided the renunciation is later confirmed by a Certificate of Loss of Nationality. A London oath sworn in November 2026 and approved in 2027 is therefore a 2026 expatriation.

What tax do you need to sort out before you renounce US citizenship?

The test that matters most is the five-year certification. Under the IRS expatriation rules, someone who expatriates is a covered expatriate if any one of three tests applies:

• Income tax test: average annual net income tax for the five years before expatriation above a figure set each year, which is $211,000 for 2026 under Rev. Proc. 2025-32;
• Net worth test: net worth of $2 million or more on the expatriation date;
• Certification test: failing to certify on Form 8854 that you complied with all federal tax obligations for the five tax years before expatriation.

The first two tests catch high earners and the wealthy. The third catches ordinary people who never filed, and it is the reason so many accidental Americans need to put their filings right before they renounce. A covered expatriate is treated as selling worldwide assets the day before expatriation, with gains above the exclusion amount, $910,000 for 2026, taxed. Later gifts and bequests from a covered expatriate to US citizens or residents can also be taxed in the hands of the US recipient under section 2801, reported on Form 708.

The exception for dual citizens from birth

Many people renouncing from the UK were British and American from birth. For them, the Form 8854 instructions provide that they are not covered merely because the income tax or net worth test applies, if two conditions are met: they became a citizen of the US and another country at birth and, on the expatriation date, still are a citizen of, and taxed as a resident of, that other country; and they were a US resident for no more than 10 years in the 15-tax-year period ending with the year of expatriation. The instructions are clear that these individuals are still covered unless they file Form 8854 and certify five years of compliance. The exception removes the wealth tests, not the paperwork.

Closing the gap between three years and five

The usual catch-up route for people keeping their citizenship, the Streamlined Foreign Offshore Procedures, asks for three years of returns and six years of FBARs. The Form 8854 certification looks back five tax years. Planning a renunciation therefore means checking that every year inside the five-year window is covered, not just the three the streamlined submission requires. Our guide to the Streamlined Foreign Offshore Procedures explains the submission itself.

People who have already renounced without ever filing have a separate route. The Relief Procedures for Certain Former Citizens apply to those who relinquished citizenship after 18 March 2010, have no US filing history, had a net worth under $2,000,000, and had an aggregate tax liability of $25,000 or less across the year of expatriation and the five years before it.

What happens to your UK tax when you renounce?

Nothing changes on the UK side. UK tax residence is decided by the Statutory Residence Test, which according to GOV.UK depends on the days you spend in the UK and your ties to it, such as work and family. Nationality does not enter into it. A UK resident who renounces US citizenship files Self Assessment, pays UK tax and claims UK reliefs exactly as before.

What falls away is the US layer on top. After the final year is filed, there are no more annual US returns, no FBARs, and no US reporting of UK investments that the US treats awkwardly, such as the funds inside a stocks and shares ISA, which our post on ISAs and the PFIC rules explains. A former citizen who is not a covered expatriate may still have US tax to consider on US-source income or US property, broadly on the same basis as any other non-US resident.

Your bank will also need telling. A US birthplace in your passport remains an indicator in its files under FATCA. HMRC's guidance at IEIM402880 lets a bank set it aside with your self-certification, a non-US passport and a copy of your Certificate of Loss of Nationality. Our post on FATCA letters and the accidental American citizenship tax problem covers that exchange in detail.

What do you file for the year you renounce?

The year of expatriation is a split year on the US side. You are a US citizen for part of it and a nonresident alien for the rest, so the final return is a dual-status return, with Form 8854 attached. The Form 8854 instructions say the initial form goes with your income tax return for the year that includes the expatriation date, and that failing to file it carries a $10,000 penalty unless the failure is due to reasonable cause and not wilful neglect.

Covered expatriates have more to report: a balance sheet, the deemed sale computation and, in some cases, annual Forms 8854 in later years. Our explainer on the tax implications of renouncing US citizenship goes through the exit tax calculation.

Illustrative example: a woman born in Ohio to British parents moved to Leeds aged three and has lived in the UK ever since. She is 45, a British citizen and UK tax resident, and has never filed a US return. She qualifies for the dual-citizen exception, so her house and pension do not make her a covered expatriate. But she cannot certify five years of compliance, so she files the missing US returns and FBARs first, joins the London waitlist while that work is under way, swears the oath, then files a final dual-status return and Form 8854 for the year of the oath. Her UK tax position does not change at any point.

What people get wrong about renouncing from the UK

• "Renouncing wipes out the years I never filed." It does not. Earlier obligations remain, and not certifying them on Form 8854 makes you a covered expatriate.
• "I own very little, so the exit tax cannot touch me." The certification test has nothing to do with wealth.
• "The tax date is when the certificate arrives." For a renunciation confirmed by a Certificate of Loss of Nationality, it is generally the date of the oath.
• "I can sort the tax out once I have the certificate." The Relief Procedures exist for people in that position, but only within strict limits. Filing first keeps every option open.
• "Renouncing will lower my UK tax bill." UK tax is unaffected. The saving is in US compliance work, not UK tax.
• "The fee is still over two thousand dollars." It has been $450 since 13 April 2026.

Getting the order right

1. Confirm the citizenship facts and whether you were a dual citizen from birth.
2. Check your US filing position across the last five tax years and six years of FBARs.
3. Test yourself against the income tax and net worth figures for the year you expect to expatriate.
4. Join the embassy waitlist early, because the wait can be longer than the catch-up work.
5. File any missing returns and FBARs before the oath.
6. Swear the oath, then file the final dual-status return and Form 8854 for that year.
7. Send your Certificate of Loss of Nationality to your banks and investment platforms when it arrives.

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. We handle the catch-up filings, the covered expatriate analysis, Form 8854 and the final return, and our accidental Americans team works with many people who were never meant to be in the US system at all. If you are thinking about renouncing, talk to us before you join the waitlist, so the tax work is finished by the time your appointment arrives.