Dual Citizens
Lifelong US and UK filing obligations managed as one system: annual returns, FBAR, investment planning, and expatriation advice from a team fluent in both codes.
Two passports, two tax codes, one plan.
Dual US/UK citizens carry both systems for life: the US taxes you on citizenship wherever you live, and the UK taxes you whenever you're resident. That means annual filings in both countries, foreign account reporting, and investment traps that run in both directions. We manage the whole obligation as one engagement.
Whether you're keeping both passports forever or weighing renunciation, we handle the annual compliance and the decade-scale decisions: investments, pensions, gifts, and what your children inherit along with the citizenship.
How we help dual citizens
Complete US and UK tax compliance and planning, coordinated under one roof.
Dual Annual Filings
Form 1040 and UK Self Assessment prepared together, every year, for as long as you hold both passports. Foreign tax credits, treaty claims, and timing elections coordinated as one position.
Treaty Tie-Breaker Analysis
When both countries claim you as a resident, the US/UK treaty's tie-breaker rules decide, but the savings clause limits what a US citizen can claim. We apply the treaty article by article.
FBAR & FATCA Reporting
FinCEN Form 114 for accounts over $10,000 in aggregate, Form 8938 at its higher thresholds, and the UK's own reporting regimes. We track every account so nothing slips between the systems.
Two-Way PFIC & Fund Planning
UK funds are PFICs to the IRS; US funds are usually non-reporting offshore funds to HMRC. Dual citizens can be punished in both directions. We build portfolios that work under both codes.
Renunciation & Exit Tax Planning
If you decide to give up US citizenship, we plan the expatriation: covered expatriate testing, net worth and tax liability thresholds, Form 8854, and structuring to manage or avoid the exit tax.
Family & Next-Generation Planning
Children of dual citizens often inherit US filing obligations along with the passport. We advise on transmission of citizenship, their future compliance, and tax-efficient gifts across the border.
One team prepares the filings for both citizenships properly, for a fixed fee.
Get StartedExplore our tax services
A lifelong obligation deserves a permanent system.
Dual citizenship is a standing arrangement with two tax authorities. We build a filing rhythm that runs both returns together every year, so compliance becomes routine instead of an annual crisis.
The traps run both ways, and so does our expertise.
Most advisers see dual citizens from one side: a US firm that treats the UK as 'foreign,' or a UK firm that treats the US as someone else's problem. Neither works when a UK fund is a PFIC to the IRS and a US fund is a non-reporting nightmare to HMRC. We plan from the middle.
Citizenship-Based Taxation, Managed
You can't opt out of the US system while you hold the passport. But with credits, exclusions, and treaty positions layered correctly, most dual citizens owe the US nothing.
Savings Clause Navigation
Much of what the treaty grants, the savings clause takes back from US citizens. We know which articles survive it (pensions, social security, certain gains) and claim exactly those.
Cross-Border Gift & Estate Design
US estate tax, UK IHT, and mismatched spousal exemptions can collide badly. We structure gifts and estates around both regimes so neither turns up as a surprise.
Expatriation Modeling
Thinking about renouncing? We model your covered-expatriate status and exit tax exposure first. Sometimes a year or two of positioning changes the answer entirely.
Why dual citizens choose US/UK Cross Border Tax
Built for Permanent Duality
There is no 'home' side to move back to, so this never becomes a temporary expat problem. We run both filings as a single permanent system, year after year.
Both Codes, One Strategy
We check every investment, pension, gift, and property decision against both tax codes before you make it, rather than explaining it apologetically afterward.
Honest Advice on Renouncing
We'll tell you what keeping US citizenship actually costs and what renouncing involves, exit tax included, so you can make the decision with real numbers.
Fixed, Transparent Pricing
Cross-border filing shouldn't mean open-ended hourly billing. We give you a fixed quote up front that covers both jurisdictions.
"Born in New York, raised in Manchester, dual everything. For years I had two accountants giving me contradictory advice. Now one team files both returns, rebuilt my investments so neither country punishes them, and gave me a straight answer on whether renouncing was worth it. It wasn't, and now I know why."
Dual Citizen Tax Questions
Common questions from people who hold both US and UK citizenship.
Two Tax Systems, One Team
Email Us
hello@usukcrossbordertax.comLondon Headquarters
4 Crown Place
London EC2A 4BT
United Kingdom
Manchester
CORE
Brown St, Manchester M2 1DH
United Kingdom
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San Francisco, CA 94108
United States
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New York, NY 10003
United States