The UK’s proposed abolition of the non-domiciled regime and the remittance basis represents one of the most consequential structural changes to its tax framework in decades. For internationally mobile families, this is not a minor policy shift — it is a fundamental redesign of how the UK taxes foreign income, foreign gains, and ultimately, global wealth.
At Intercorp Group, we observe that many families are still analysing the proposals in isolation, as if this were merely a UK tax matter. In reality, it is a jurisdictional architecture question. A passive “wait and see” approach risks allowing irreversible exposures to crystallise.
The new rules demand active review and deliberate restructuring.
From Domicile-Based to Residence-Based Taxation
The UK is moving from a regime based on where you are “from” to one based entirely on where you live.
For more than a century, a UK tax resident could retain a non-UK domicile and access the remittance basis — paying UK tax only on foreign income or gains remitted to the UK. This made the UK uniquely attractive for global families.
The proposed reform replaces this system with a residence-based approach.
The Four-Year Foreign Income & Gains (FIG) Regime
Individuals who were non-UK resident for at least ten years may claim:
- A four-year exemption for foreign income and gains
- Full UK taxation thereafter on worldwide income and gains, regardless of remittance
The historic non-dom advantage effectively ends after year four.
The Inheritance Tax Shift: The Most Consequential Change
The structural risk is not income tax. It is worldwide Inheritance Tax exposure.
While income tax changes dominate the headlines, the most long-term consequence lies in how the UK proposes to apply IHT.
Worldwide Estate Exposure
Individuals who have been UK resident for 10 out of the last 20 years may be treated as UK-resident for IHT purposes. This subjects their entire global estate to 40% UK IHT.
Erosion of Excluded Property Trust Protections
The proposed rules fundamentally alter the long-standing protections afforded by Excluded Property Trusts:
- Existing EPTs may retain grandfathered protection, depending on timing
- No new protected trusts can be created after arrival in the UK under the new regime
- Additions to existing trusts may lose protection
For families living in the UK for more than a decade, this is a structural exposure inconsistent with multi-generational planning.
“Families who treat this shift as an opportunity — not an inconvenience — will be those who emerge with stronger governance, clearer architecture, and better jurisdictional balance.”
Immediate Planning Opportunities: Transitional Reliefs
Time-sensitive opportunities exist for current remittance-basis users.
Capital Gains Rebasing
Eligible individuals may rebase foreign assets to a specified historical valuation date (e.g., 5 April 2017), reducing future UK CGT exposure.
Temporary Repatriation Facility
A limited-time window (expected three years) allows previously untaxed foreign income and gains to be brought to the UK at a reduced tax rate (e.g., 12–15%).
These reliefs require prompt evaluation and coordinated execution.
The Three-Phase Strategic Review for International Families
Intercorp advises families to undertake a structured review across three domains.
Phase 1: Trust Architecture Audit
Evaluate whether existing structures still function as intended under a residence-based regime.
Key considerations include:
- Does the trust qualify for grandfathered excluded property status?
- When will the settlor trigger the 10-out-of-20-year IHT test?
- What are the implications now that protections for settlor-interested trusts are being curtailed?
This is a foundational structural audit, not a tax filing exercise.
Phase 2: The “10-Year Clock” Decision
Remaining in the UK beyond ten years must become a deliberate, strategic choice — not an accidental outcome.
Families should undertake a cost-benefit review:
- What is the total IHT exposure triggered by remaining beyond ten years?
- Can educational, business, or lifestyle objectives still be met with residence below ten years?
- If remaining, is the long-term tax cost acceptable relative to the advantages of UK presence?
This phase reframes UK residence as a strategic asset — not a default lifestyle decision.
Phase 3: Jurisdictional Rebalancing Without Full Departure
A family can maintain a UK presence while reducing structural exposure.
Possible approaches include:
Asset Migration — Relocating mobile assets to jurisdictions with more favourable IHT frameworks.
Generational & Spousal Planning — Ensuring key family members maintain alternative tax residences to diversify exposure.
Operational Separation — Maintaining operational businesses in the UK while holding passive investment capital elsewhere.
This approach provides continuity without concentrated risk.
Conclusion
The UK’s transition to a residence-based tax system marks a permanent structural shift. Families who attempt to navigate this environment using the logic of the old non-dom regime risk making decisions based on outdated assumptions.
The central question is not whether the UK remains attractive — it does. The central question is whether your current architecture remains appropriate under the new rules.
Families who act decisively, review structures holistically, and integrate jurisdictional strategy into their long-term planning will be best positioned to preserve both mobility and multi-generational capital.
