US Expat Tax Services Green Card Holders in the UK |
By US-UK Tax Advisors cross-border tax team · Last updated JUL 14, 2026
US Expat Tax Services Green Card Holders in the UK | US Expat Tax Services: Green Card Holders in the UK US Expat Tax Services for Green Card Holders ...
Key Takeaways
- Covers us expat tax for US-UK cross-border taxpayers
- Applies to US persons with UK ties and UK residents with US income
- Highlights the filing, reporting and tax-treaty points to check
- Get personalised advice before acting on your own facts
US Expat Tax Services Green Card Holders in the UK |
US Expat Tax Services: Green Card Holders in the UK
US Expat Tax Services for Green Card Holders in the UK
US expat tax services for green card holders living in the United Kingdom are more urgently needed than most permanent residents realize. A US green card is not just an immigration document — it is also a US tax status that creates the same worldwide income reporting obligations as US citizenship. Furthermore, a green card holder living in the UK must file a US Form 1040 every year, report all worldwide income, including UK employment income and UK investment returns, file an FBAR for all UK bank accounts above the threshold, and comply with all the same international information return requirements as a US citizen. Additionally, many green card holders in the UK have been living here for years without filing US returns — not realizing that leaving the United States does not suspend the obligation. Consequently, understanding what US expat tax services must address for a green card holder — and understanding the specific rules that apply when the green card is eventually given up — is essential for every permanent resident living outside the US.
US Tax Obligations for Green Card Holders in the UK
The Worldwide Income Reporting Obligation
A US permanent resident — green card holder — is a US person for tax purposes. Furthermore, the IRS taxes US persons on their worldwide income regardless of where they live, meaning a green card holder in London pays US income tax on their UK salary, UK rental income, UK dividends, and any other income from any source worldwide. Additionally, the foreign tax credit for UK income tax prevents double taxation in most cases — UK income tax paid on the same income is creditable on Form 1116, typically reducing the US income tax to zero or near-zero for UK employment income. Consequently, the annual US Form 1040 is mandatory for every green card holder living in the UK, and failing to file does not reduce or eliminate the underlying tax obligation. The IRS guidance on green card holder taxation is at https://www.irs.gov/individuals/international-taxpayers/us-resident-alien-income-tax-return.
FBAR and Form 8938 for UK Accounts
Green card holders in the UK have the same FBAR and Form 8938 obligations as US citizens. Furthermore, every UK bank account, UK investment account, UK ISA, and UK pension account whose value is measurable must be included in the FBAR if the aggregate balance of all foreign accounts exceeds $10,000 at any point during the calendar year. Additionally, Form 8938 applies to specified foreign financial assets above the applicable threshold — for UK-resident filers, that is $200,000 at year-end or $300,000 at any point during the year. Consequently, a green card holder with a UK current account, a UK ISA, and a UK workplace pension easily triggers both the FBAR and Form 8938 reporting obligations in most years. The FBAR guidance is at https://www.fincen.gov/financial-crimes-enforcement-network/fbar.
International Information Returns for UK Business Interests
Where a green card holder in the UK owns a UK limited company, holds a UK pension, has received a UK inheritance, or has interests in UK trusts, the same international information return obligations apply as for US citizens. Furthermore, Form 5471 applies where the green card holder owns 10% or more of a UK company; Form 3520 applies where a UK inheritance exceeds $100,000; and Form 8621 applies where UK fund investments within an ISA or investment account are PFICs. Additionally, the penalty regime for missing these forms is identical for green card holders and US citizens — $10,000 per form per year for Form 5471, and 35% of the inheritance value for a missed Form 3520. Consequently, a green card holder's US expat tax services engagement should include a full audit of all international information return obligations — not just the FBAR and Form 1040.
Green Card Abandonment: The Exit Tax Rules
Who Is a Long-Term Resident for Exit Tax Purposes
When a green card holder decides to give up their green card — by filing Form I-407 with USCIS or by having the green card revoked — the US exit tax rules may apply. Furthermore, the exit tax applies to long-term residents — those who have held a green card for at least eight of the fifteen years ending in the year of abandonment. Additionally, where the green card holder is a long-term resident, they are treated as a covered expatriate if they meet the same three tests that apply to renouncing U.S. citizenship — the $2 million net worth test, the $206,000 average annual income tax test, or the five-year compliance certification failure. Consequently, a green card holder who has lived in the UK for ten or more years and who has significant UK assets — property, pension, investments — may be a covered expatriate subject to the mark-to-market exit tax when they abandon the green card. The IRS exit tax guidance is at https://www.irs.gov/individuals/international-taxpayers/expatriation-tax.
The Mark-to-Market Exit Tax for Green Card Abandonments
Where a green card holder is a covered expatriate, all worldwide assets are treated as if sold at fair market value on the day before the abandonment date — with the resulting deemed gain above the $866,000 lifetime exclusion subject to US income tax. Furthermore, this exit tax applies to UK property, UK pension interests, UK company shares, and all other worldwide assets — valued in US dollars at the date of abandonment. Additionally, the five-year compliance certification on Form 8854 must also be completed correctly — requiring five years of filed US returns, FBARs, and information returns. Consequently, the US expat tax services prerequisite for green card abandonment is the same as for citizenship renunciation — a clean prior filing history, and often a significant period of streamlined filing correction where prior years were not addressed. The IRS Form 8854 instructions are at https://www.irs.gov/forms-pubs/about-form-8854.
Giving Up the Green Card Without Triggering the Exit Tax
Not every green card abandonment triggers the exit tax — only long-term residents who are covered expatriates. Furthermore, where the green card holder has held it for fewer than eight of the preceding fifteen years, the exit tax does not apply — meaning the abandonment has no special US tax consequences beyond the filing of Form I-407 and the final year Form 1040. Additionally, where the green card holder is a long-term resident but does not meet any of the three covered expatriate tests — net worth below $2 million, average income tax below $206,000, and five years of clean compliance certified — the exit tax also does not apply. Consequently, planning the timing of green card abandonment — in terms of both the year of abandonment relative to the eight-year threshold and the current net worth position — is a specific US expat tax services planning exercise that can significantly affect the total tax cost.
What Happens if You Simply Stop Using the Green Card
The Continuing US Tax Obligation
Many green card holders living in the UK simply stop using their green card — not renewing it, not traveling to the United States, and not formally abandoning it — while assuming their US tax obligations have ended. Furthermore, this assumption is incorrect. The green card remains legally valid until formally abandoned through Form I-407 or revoked by USCIS — and the US tax obligation based on green card holder status continues for every year the card remains in force, regardless of whether the holder ever enters the United States. Additionally, the FATCA data exchange means that UK bank accounts held by green card holders are reported to the IRS — potentially triggering IRS inquiries about unfiled returns even where the holder has been in the UK for many years. Consequently, simply ignoring the green card creates a growing filing gap that compounds year by year and that becomes more difficult and expensive to resolve the longer it is left unaddressed.
Correcting Prior-Year Gaps Through the Streamlined Program
Green card holders in the UK who have not been filing US returns can correct prior-year gaps through the IRS Streamlined Foreign Offshore Procedures — the same program available to US citizens abroad. Furthermore, the eligibility requirements are the same — non-US residence during the covered period, non-wilful non-compliance, and no prior IRS contact on the matters being disclosed. Additionally, the program covers three years of amended or original Form 1040 returns, six years of FBARs, and a 5% penalty on the highest aggregate foreign account balance. Consequently, most UK-based green card holders who have not filed can access the streamlined program, since they satisfy the non-residency requirement and their non-compliance is typically non-wilful, arising from unawareness of the continuing obligation. The IRS streamlined procedures are at https://www.irs.gov/individuals/international-taxpayers/streamlined-filing-compliance-procedures.
Case Study: UK Resident Green Card Holder, Eight Years of Non-Filing
Our team was engaged by a British national who had obtained a US green card while working in New York for four years, then returned to the UK eight years ago. She had not filed a US return or FBAR for any year since her return. Furthermore, she had a UK salary of approximately £65,000, a UK current account, a UK ISA worth approximately £38,000, and a UK workplace pension worth approximately £95,000. She was considering formally abandoning the green card to simplify her situation.
After reviewing her position, we confirmed she qualified for the streamlined procedures — she had been UK-resident throughout the covered period, and her non-compliance was clearly non-wilful. Furthermore, the foreign tax credit for UK PAYE on her salary eliminated the US income tax on her employment income in all three covered years. Additionally, since she had held the green card for twelve years — exceeding the eight-year long-term resident threshold — the exit tax rules would apply on abandonment. However, her net worth was approximately £200,000, and she did not meet the $2 million threshold for covered expatriates. Consequently, she was not a covered expatriate — the exit tax did not apply on abandonment. We prepared the streamlined submission, corrected three years of returns, filed six years of FBARs with the 5% penalty on the highest aggregate balance of approximately £140,000 ($175,000), resulting in a penalty of $8,750, and prepared Form I-407 and Form 8854 for the abandonment year. The total correction cost was $8,750, plus preparation fees.
Common Mistakes Green Card Holders Make in the UK
Assuming the US Tax Obligation Ended When They Left the US
The most widespread misconception is that moving to the UK suspends or ends the US tax obligation. Furthermore, the green card creates US person status for tax purposes that continues until the card is formally abandoned — not until the holder stops living in the United States. Additionally, the IRS has no automatic mechanism to identify that a green card holder has emigrated — meaning the obligation continues in the background without any notification from the IRS. The correct approach requires recognizing the ongoing US tax obligation from the date of departure from the US and either maintaining the filing program or formally abandoning the green card and completing the US tax expatriation process. The IRS green card guidance is at https://www.irs.gov/individuals/international-taxpayers/us-resident-alien-income-tax-return.
Not Planning the Green Card Abandonment Around the Eight-Year Threshold
A green card holder who is approaching the eight-year long-term resident threshold — and who intends to abandon the green card in the near future — may be able to abandon before crossing the threshold and avoid the exit tax rules entirely. Furthermore, abandoning in year seven rather than year nine eliminates the long-term resident classification and removes the covered expatriate risk — regardless of net worth. The correct approach requires confirming the exact year count with US expat tax services and planning the timing of the abandonment where the eight-year threshold has not yet been crossed.
Not Correcting Prior-Year Gaps Before Abandoning
Form 8854 — required for the tax expatriation of a long-term resident green card holder — requires a five-year compliance certification. Furthermore, where prior-year returns were not filed, the certification cannot be truthfully made and the tax expatriation is incomplete. Additionally, an incorrect certification is made under penalty of perjury. The correct approach requires completing the streamlined procedures for any prior-year filing gaps at least six months before the planned green card abandonment, ensuring the five-year compliance period is clean before Form 8854 is signed.
How US-UK Tax Can Help
At US-UK Tax, our team of Enrolled Agents, Chartered Tax Advisers, and Certified Public Accountants provides specialist US expat tax services for green card holders living in the UK. Furthermore, we prepare annual US Form 1040 returns with the foreign tax credit for UK income tax, file FBARs and international information returns, advise on the timing of green card abandonment and covered expatriate analysis, prepare Form I-407 and Form 8854 for the abandonment year, and correct prior-year filing gaps through streamlined procedures. Additionally, we confirm whether the exit tax applies and model the cost before the abandonment appointment.
Contact our team today. Email hello@us-uktax.com, call 0333-8807974, or visit https://www.us-uktax.com/contact/.
Conclusion
A US green card creates the same worldwide income tax obligations as US citizenship — and those obligations continue until the card is formally abandoned through the correct legal and tax process. Furthermore, specialist US expat tax services for green card holders in the UK address the annual Form 1040 and FBAR obligations, model the covered expatriate exit tax risk before abandonment, and ensure the five-year compliance certification on Form 8854 can be made truthfully. Moreover, planning the abandonment before the eight-year long-term resident threshold — where possible — eliminates the exit tax risk entirely. Contact US-UK Tax at hello@us-uktax.com or call 0333-8807974 today.
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US-UK Tax | hello@us-uktax.com | 0333-8807974
FAQs
Q: Must a green card holder in the UK file a US tax return?
A: Yes. Green card holders are US persons for tax purposes and must file Form 1040 annually, reporting all worldwide income. The filing obligation continues for every year the green card remains valid — regardless of whether the holder ever returns to the United States.
Q: Are UK bank accounts FBAR-reportable for green card holders?
A: Yes. Green card holders have the same FBAR obligations as US citizens. All UK bank accounts, ISAs, and investment accounts are reportable where the aggregate balance of all foreign accounts exceeds $10,000 at any point during the calendar year.
Q: Does the exit tax apply when abandoning a green card?
A: Only for long-term residents — those who held the green card for at least eight of the prior fifteen years — and only where they are covered expatriates (net worth over $2 million, high income tax, or compliance failure). Abandoning before eight years eliminates the exit tax risk.
Q: What is Form I-407 and when must it be filed?
A: Form I-407 is the USCIS form used to abandon a green card formally. It is filed with the nearest US embassy or consulate. For tax purposes, it must be accompanied by Form 8854 filed with the IRS for the year of abandonment to complete the US tax expatriation process.
Q: Can a green card holder use the IRS streamlined procedures?
A: Yes, where non-compliance was non-wilful and the holder was a non-US resident during the covered period. The program covers three years of returns, six years of FBARs, and a 5% penalty on the highest aggregate foreign account balance. Eligibility requirements are identical to US citizens.
Q: What happens if I simply stop using my green card without formally abandoning it?
A: The US tax obligation continues. The green card remains legally valid until formally abandoned. UK banks report account data to HMRC under FATCA for exchange with the IRS, which may then identify unfiled returns from green card holders through this data exchange.
