Staying Compliant: Tax, CRS, FATCA & Exit Taxes in Wealth Expatriation

Compliance is the backbone of wealth expatriation. Every credible plan to reposition a family's wealth into stable, tax-efficient jurisdictions rests on a single, non-negotiable principle: it is optimisation within full transparency — never evasion. Tax, CRS, FATCA and exit-tax rules are not obstacles to work around; they are the framework within which lawful planning happens. This page, part of our wealth expatriation hub, explains the compliance regimes that govern cross-border wealth in 2026 — automatic information exchange, US citizen reporting, exit and departure taxes, anti-avoidance rules, economic substance, source-of-funds diligence and tax residency tie-breakers — and why structures must have real substance and be properly reported.

In short: the key takeaways

Compliant wealth expatriation means every account, structure and residence is disclosed to the relevant tax authorities and stands up to scrutiny. Under regimes such as the Common Reporting Standard and FATCA, offshore assets are automatically visible to your home country, so secrecy is neither available nor the goal. Lawful planning depends on substance — genuine activity and governance — and on correct reporting. The distinction from evasion is absolute: expatriation discloses and optimises; evasion conceals and is a crime.

Optimisation within transparency: the governing principle

The single idea that runs through every compliance regime below is transparency. A generation ago, offshore planning sometimes relied on information simply not crossing borders. That world no longer exists. Automatic exchange of information, beneficial-ownership registers and coordinated anti-avoidance rules mean tax authorities now see a great deal, and share what they see.

For internationally mobile families this is not a threat — it is clarifying. It means the only durable strategy is one built to be seen: recognised jurisdictions, transparent structures, genuine substance and complete reporting. This is the discipline we describe throughout the hub as repositioning, not escape. The families who run into difficulty are almost always those who treated disclosure as optional, one of the recurring themes in our note on the five mistakes HNW families make.

How do CRS and FATCA make offshore assets visible?

Two automatic information-exchange regimes underpin modern cross-border tax compliance.

The Common Reporting Standard (CRS), developed by the OECD, is a global system of automatic exchange of financial account information. More than 100 jurisdictions participate. Financial institutions identify the tax residence of their account holders and report account balances, interest, dividends and sale proceeds to their local tax authority, which then passes the data to the account holder's country of tax residence. In practice, this means an account held in the Channel Islands or Cayman is reported to the authorities where the holder is tax-resident.

The United States operates its own regime, the Foreign Account Tax Compliance Act (FATCA), which requires foreign financial institutions to report accounts held by US persons to the IRS. US persons must separately disclose foreign accounts through the FBAR (FinCEN Form 114) and, where thresholds are met, FATCA Form 8938. Our overviews of CRS and FATCA for expats and the FATCA and FBAR compliance guide for US expats explain the mechanics and filing obligations in detail.

The practical consequence is simple. Holding assets offshore does not hide them; it never should be intended to. The purpose of a well-chosen international financial centre is legal stability and tax neutrality, not concealment — a point we return to in our guide to offshore structures for wealth expatriation.

Exit taxes and temporary non-residence: what applies when you leave?

Leaving a jurisdiction can itself trigger tax, and the rules vary sharply by country. This is information, not advice, and the details below should be checked against current law for your situation.

• The United Kingdom does not impose a formal exit or departure tax on emigration, and the November 2025 Budget did not introduce one — although an exit tax has been the subject of policy speculation and could appear in a future Budget, so the position should not be assumed permanent. It does, however, apply temporary non-residence rules: broadly, if you leave and then return to UK residence within five complete tax years, certain gains and income realised while abroad can be re-crystallised and taxed on your return. Timing and duration therefore matter a great deal. Our guide to the UK statutory residence test sets out how residence itself is determined.
• Several EU countries do levy departure taxes, typically treating certain assets as if sold on the day residence ends and taxing the notional gain. The mechanics and reliefs differ by country.
• The United States applies an expatriation tax under IRC 877A to "covered expatriates" who renounce citizenship or long-term residence, broadly a deemed disposal of worldwide assets at market value on the day before expatriation.

Because the treatment ranges from none to substantial, sequencing a departure correctly is central to any plan. Our dedicated articles on exit taxation when leaving your home country and the UK exit-tax debate around the 2025 Budget explore this further, and our tax and compliance work for UK non-doms and US citizens applies it to those specific situations.

Compliance regimes at a glance

The table below summarises the principal regimes that shape compliant wealth expatriation.

Regime	What it does	Who it affects
CRS	Automatic annual exchange of financial account data between 100+ jurisdictions	Tax residents of any participating country holding foreign accounts
FATCA	Requires foreign institutions to report US-person accounts to the IRS	US citizens and green-card holders worldwide
FBAR / Form 8938	US foreign-account and foreign-asset disclosure filings	US persons meeting balance/asset thresholds
Exit / departure taxes	Tax on unrealised gains when tax residence ends (varies by country)	Emigrants from countries that levy them; US covered expatriates (IRC 877A)
UK temporary non-residence	Re-crystallises certain gains/income if you return within 5 complete tax years	Former UK residents returning within the window
CFC rules	Attributes a low-taxed foreign company's profits to its home-country owners	Residents controlling foreign companies
Economic substance / BEPS	Requires genuine activity where a company is registered	Companies in low-tax and offshore jurisdictions
AML / source of funds	Verifies the lawful origin of wealth before banking or structuring	Anyone opening accounts or establishing structures

Anti-avoidance: CFC rules, substance and BEPS

Two families of rules ensure that structures reflect economic reality rather than paper arrangements.

Controlled foreign company (CFC) rules allow a home country to tax the retained profits of a low-taxed foreign company controlled by its residents, as if those profits had been received at home. They exist to stop income being parked in a shell company in a nil-tax jurisdiction. They do not prohibit owning foreign companies; they require that genuine, actively managed businesses be distinguished from artificial diversion of income. We cover the detail in our guide to CFC rules for expat investors.

Economic substance requirements, driven by the OECD's Base Erosion and Profit Shifting (BEPS) project, require that a company carrying on relevant activity actually conducts it where it is registered — with appropriate people, premises, expenditure and decision-making in the jurisdiction. A holding company or fund vehicle cannot be a nameplate; it must be governed and administered where it sits. Our analysis of substance requirements and BEPS for offshore structures explains what "substance" means in practice. This is why the framework of jurisdictional roles insists that structuring centres be chosen for real governance capacity, not merely a low headline rate.

Source of funds, due diligence and tax residency

Two further pillars complete the compliance picture.

Anti-money-laundering (AML) due diligence is now universal. Banks, trustees and regulators must verify the lawful source of funds and source of wealth before opening an account or establishing a structure. Expect to evidence where money came from — a business sale, employment, inheritance, or investment gains — with supporting documentation. Thorough records are not a hurdle to a legitimate plan; they are precisely what allows a compliant structure to be banked and maintained smoothly.

Tax residency tie-breakers and double tax treaties resolve the common situation where two countries each consider you resident. Bilateral treaties contain tie-breaker tests — typically permanent home, centre of vital interests, habitual abode and nationality, applied in order — to allocate residence to one country and prevent the same income being taxed twice. Getting residence right, and documenting it, is foundational; our broader guidance on legal offshore planning and tax havens places these treaty mechanics in context.

An important note

This page is general information, not personalised financial, tax, legal or immigration advice. Tax rules, thresholds and treaty provisions change, and the value of investments can fall as well as rise. Compliance regimes are complex and jurisdiction-specific, and the summaries above are necessarily simplified. Any wealth expatriation strategy should be built on coordinated professional advice tailored to your circumstances and to current law.

How Global Investments helps

Global Investments is an independent international wealth advisory firm with three decades of experience serving clients across the world. We help internationally mobile families build plans that are compliant by design — properly reported, backed by genuine substance, and coordinated across every relevant jurisdiction. Working alongside your tax and legal specialists, we make sure the compliance layer is addressed before assets move, not after. If you want a clear-eyed view of how CRS, FATCA, exit rules and substance requirements apply to your situation, contact us for a considered, confidential conversation.