If you’re a South African with big plans to move to the UK, or you’re already there, it’s time to rethink your finances. The UK has scrapped its preferential non-domiciled tax status in the UK, and the way your foreign income and assets will be taxed is about to change.
For years, the UK non-dom status meant expats only paid tax on UK-sourced income, leaving overseas income and gains untouched unless brought into the UK. Offshore assets were also protected from UK inheritance for non-UK domiciled individuals. Those days are over.
Top three things’ expats need to know about the implications of scrapping the UK non dom rule:
- Four-year foreign income window: New residents get four years where overseas income tax in the UK doesn’t apply. You can bring in funds from abroad without paying tax during this period for qualifying foreign income and gains arising during the four-year period (excluding certain items such as pension lump sums). After four years, individuals are generally taxed on worldwide income and gains.
- Inheritance tax exposure: If you’ve been in the UK for 10 of the last 20 years, you’re considered a long-term resident (LTR). That makes your worldwide estate subject to a 40% UK inheritance tax. Even leaving the UK won’t automatically remove this liability, thanks to tail provisions that can extend tax exposure for up to 10 years.
- Temporary relief for existing non-doms: The temporary repatriation facility in the UK lets you bring previously unremitted foreign income or gains into the UK at a lower tax rate. This applies to offshore income, gains, and distributions from non-resident trusts.
What do expats need to know to understand the UK non-dom tax changes?
Here’s the simplest way to think about it: the UK has moved from a domicile-based system to a residence-based system. That means your first four years of UK residence offer a limited break from tax. After that, foreign property income tax in the UK, foreign rental income tax in the UK, and distributions from offshore trusts are all taxable under standard rules.
The four-year window is only available where the individual has been non-UK resident for at least 10 consecutive years before arrival. That makes timing your move or bringing in offshore funds a critical part of planning. You also need to consider UK tax rates for foreigners, capital gains tax on overseas property in the UK, and UK tax on overseas dividends, while you’re at it.
It’s also important to bear in mind that different types of foreign income are treated differently. Rental income, dividends, or profits from a business abroad could each have separate reporting requirements in your UK Self-Assessment tax return. Ignoring this can trigger penalties or back taxes – which is never advisable.
Read more: Bad news for South Africans working in the UK hoping for residency
How the South Africa UK double taxation agreement can help
The South Africa-UK double tax treaty can help reduce your tax exposure, but it’s not a free pass. If you live across multiple countries without a clear tax residence, you could still face double taxation.
Property investment in the UK has also become more complicated. In addition to normal taxes, new measures such as the planned “mansion tax” from 2028 (potential future measures (subject to government policy changes), I would suggest to remove it), lower rental yields, and the Renters’ Rights Act, which gives tenants stronger protections, may make long-term property ownership less attractive for some investors.
While the UK still offers strong career opportunities and high-quality education, the overall cost of living has increased. For example, VAT now applies to private school fees, which can significantly raise education costs for families.
For expats with offshore investments, careful planning can make a huge difference. For example, timing when you remit income or realise capital gains can help you stay within the four-year window, or allow you to use the temporary repatriation facility in the UK effectively.
Read more: Can South Africans benefit from the latest UK tax reforms?
UK inheritance tax for non-residents and long-term residents
Planning for inheritance tax is now a critical part of financial strategy for expats. Long-term residents are liable for 40% UK inheritance tax (IHT) on worldwide assets. Tail provisions can stretch this exposure up to 10 years after leaving the UK. For South Africans, the double taxation agreement between South Africa and the UK can reduce some of this liability if used strategically.
Even small oversights, like forgetting to declare a foreign property sale or overseas dividends, could add up. When you think about matters like this, it’s not just about protecting assets, it’s about making sure your family isn’t caught off guard.
Planning your finances as an expat under the new UK non-dom tax rules
The new rules are ideal for short-term assignments, entrepreneurs, or executives who plan to generate gains within four years. But if you’re thinking long term, exposure to UK tax on foreign income, global capital gains, and inheritance tax means careful planning is essential.
Here’s what the FinGlobal team advises:
- Check your non-dom status in the UK and make sure you understand how the new rules apply.
- Explore the TRF to bring offshore funds into the UK at a reduced rate.
- Plan for inheritance tax, including long-term residency and tail provisions.
- Track your residency timeline carefully to avoid surprises.
- Use the South Africa UK double taxation agreement to reduce cross-border tax exposure.
- Keep accurate records of all foreign income and assets.
- Consider seeking professional guidance on the timing of asset repatriation and capital gains realisation.
The abolition of UK non-dom tax rules is a wake-up call. The right strategy now can protect your wealth, reduce your tax liability, and give you peace of mind.
FinGlobal: cross-border financial and tax specialists for expats
If you’re a South African living in the UK or thinking about making the move, it helps to have the right support on your side. FinGlobal works with expats every day to simplify complex cross-border financial matters. The team can help you formalise your tax emigration, confirm your non-resident tax status, apply for SARS tax clearance for international transfers, and move funds offshore safely and efficiently.
FinGlobal also assists with accessing and cashing in eligible South African retirement annuities and making sure your affairs stay compliant in both South Africa and abroad. With a team that includes certified international financial planners, lawyers, chartered accountants, tax specialists and bankers, FinGlobal brings together the expertise needed to guide South Africans through every aspect of cross-border finance with confidence.
Ready to put FinGlobal’s services to the test? Leave your contact details below, and we’ll be in touch soon to see how we can help you make your money moves.
Send us a message
Leave your details below including a short message and a financial consultant will contact you.
Licensed South African Financial Services Provider FSP # 42872
You have Successfully Subscribed!
FinGlobal Newsletter Subscription
Subscribe to the FinGlobal newsletter to receive all the latest news and information regarding our services and South African Expats.