To illustrate the impact of the upcoming changes, here are two tax simulations for a high-net-worth individual earning £2 million annually from foreign investments:
Scenario 1: Remaining a UK Resident (Post-April 2025)
Income Tax: £2M taxed at UK rates (top rate 45%) → Approx. £900,000 tax due
Capital Gains Tax: UK rate of 20% → Approx. £200,000 tax due (assuming £1M in gains)
Inheritance Tax: 40% on worldwide assets above £325,000
Total Estimated Tax Burden: £1.1M+ per year
Scenario 2: Relocating to Switzerland (Forfait Fiscal Regime)
Lump-Sum Taxation: Fixed tax negotiated with Swiss authorities (typically £200,000-£400,000 per year)
Capital Gains Tax: £0 tax due (private capital gains generally untaxed)
Inheritance Tax: 0% in selected cantons for direct heirs
Total Estimated Tax Burden: £200,000-£400,000 per year
Potential Annual Tax Savings: £700,000-£900,000+ by relocating to Switzerland under the lump-sum taxation system.
This example highlights the significant financial advantages of relocating before the UK’s Non-Dom tax changes take effect.