The complete guide
Paradigm Shift
Historically, the UK’s appeal to global wealth was underpinned by a pragmatic and permissive tax regime. Non-domiciled residents—whose permanent home was considered outside the UK—could live in Britain indefinitely while paying tax only on UK-sourced income. Foreign income and gains were taxed only if "remitted" to the UK. Wealth structuring tools such as offshore trusts, Business Investment Relief, and asset rebasing allowed high-net-worth individuals (HNWIs) to plan for the long term with a high degree of certainty and efficiency.
As of April 2025, that era is officially over.
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For more than 200 years, the “Res Non-Dom” regime made the UK—and particularly London—a magnet for global capital. The ability to shield non-UK income and gains was not just a tax benefit; it was a structural advantage in the global competition for wealth migration. That competitive edge has now been lost.
Sweeping reforms, initiated by the Labour Party in anticipation of political change, have abolished domicile status as a tax concept and ended the remittance basis. From April 2025, a residence-based system replaces the previous model, taxing all UK residents on their worldwide income and gains as they arise. A limited four-year exemption—the new Foreign Income and Gains (FIG) regime—will apply only to new arrivals who have been non-resident for at least ten years.
While the stated goal is greater tax equity, the practical effect is a fundamental shift in how global wealth views the UK. Capital is mobile—and so are the individuals who control it. The response has been swift: inquiries into wealth migration are rising, offshore trust planning is accelerating, and attention is turning to jurisdictions that offer both tax efficiency and asset security.
