Relocating or retiring abroad
Financial Freedom Beyond Borders: Secure your financial future overseas
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Having a clear financial strategy and understanding the nuances of cross border regulations is key.
There are special rules that may apply to you if you arrive in or leave the UK during the tax year. Care should be taken with timing.
The TNR rules apply to individuals who were UK tax residents for at least 4 out of the seven tax years immediately before they left the UK. If these individuals then return to the UK and become UK tax residents again within five years of leaving, the TNR rules may apply.
What the Rules Entail:
Types of Income and Gains Affected:
Exceptions and Special Cases:
There are some exceptions to the rules, such as the sale of an individual’s primary residence, provided it qualifies for private residence relief. Other exemptions may apply based on specific circumstances, so it’s important to assess each case individually.
The 5-Year Rule
Although you may only be liable for income tax in your new country of residence and not the UK – You will need to be non-resident for more than five years in order to escape UK Capital Gains Tax (CGT) on assets owned at the time of departure (there are different rules for property) and which you dispose of after leaving the UK. This five-year clock starts from when your sole UK tax residence ceases. If you become a resident again in the UK during this five-year period, any assets sold after leaving the UK will be taxed in the UK in the tax year that you return.
Split Year Treatment
The rules on split year treatment and capital gains are very complex. Split-year treatment applies to both income tax and capital gains tax. However, capital gains tax can sometimes apply if you are a non-resident in the UK, including during the overseas part of a split year. In addition, if you are only temporarily non-resident in the UK, then capital gains tax can apply on disposals made while non-resident when you return to the UK. If split-year treatment applies to you, you pay UK income tax as a UK resident for income earned in the ‘UK part’ of the year, and you pay income tax as a non-resident for income earned in the ‘overseas part’ of the year. This means that the non-UK income earned in the overseas part of the year is out of the scope of UK income tax.
Split-year treatment can apply when you are becoming a resident in the UK (if so, there will be an overseas part of the year followed by a UK part), or when you are becoming non-resident in the UK (if so, there will be a UK part followed by an overseas part).
To avoid the implications of the TNR rules, you must remain outside the UK and be non-resident for more than 5 full tax years. If you return within this period, income and gains made while you were abroad may be taxed as if you were a UK resident. Understanding the TNR rules and their implications can help in planning financial affairs, especially if there is an intention to return to the UK within a short period. The application of these rules can be complex, and various factors, such as the type of income or gains and the specific timing of the return, can influence how they are applied.
The UK Temporary Non-Residence Rules are designed to prevent tax avoidance by ensuring that individuals who leave the UK for a short period are still accountable for taxes on certain income and gains. Proper planning and understanding of these rules can help avoid unexpected tax liabilities when moving in and out of the UK.
UK Inheritance Tax: Residence-Based Rules and the “IHT Tail”
From 6 April 2025, the UK inheritance tax (IHT) system no longer relies on domicile to determine exposure to UK tax on non-UK assets. Instead, liability is now driven by long-term UK residence.
An individual becomes a Long-Term UK Resident (LTR) when they have been UK tax resident for at least 10 out of the previous 20 tax years. Once classed as an LTR, their worldwide estate is within the scope of UK IHT.
The IHT “Tail” After Leaving the UK
Becoming non-UK resident does not immediately remove global IHT exposure. Instead, there is an “IHT tail” — a period during which a former UK resident remains taxable on non-UK assets after departing.
The tail length depends on how long you lived in the UK before leaving:
| Years resident in the UK (within past 20) | Worldwide assets remain subject to UK IHT for: |
|---|---|
| 10–13 years | 3 tax years after departure |
| 14 years | 4 tax years after departure |
| 15 years | 5 tax years after departure |
| 16 years | 6 tax years after departure |
| 17 years | 7 tax years after departure |
| 18 years | 8 tax years after departure |
| 19 years | 9 tax years after departure |
| 20+ years | 10 tax years after departure |
After the applicable tail period has passed and you have remained non-UK resident throughout, your non-UK assets generally cease to be subject to UK IHT.
What Always Remains Taxable
Regardless of residence or how long you have lived overseas:
- UK-sited assets — such as UK property or UK-based investments — always remain within the UK IHT net.
- If you return to UK residence, the LTR clock may start to reset toward future worldwide IHT exposure once again.
Why Planning Matters
This shift means exit planning and timing are now crucial for internationally-mobile families. Managing when and how worldwide IHT exposure falls away can significantly reduce the risk of unnecessary tax on global wealth.
Double Taxation Agreements
If you’re navigating the complexities of tax residency or have income in multiple countries, understanding how Double Taxation Agreements (DTAs) affect your financial obligations is also key.
Many expatriates are familiar with Double Taxation Agreements (DTAs), which help prevent being taxed twice on the same income or gain across different countries. In some instances, it could help you to be more tax efficient if you become a resident of a country with favourable tax rules. DTAs are particularly important for those who might be considered tax residents in two jurisdictions or for expats with income or assets in multiple countries. However, there are common misconceptions, such as assuming that DTAs apply automatically, or that one can simply choose where to be a tax resident. In reality, DTAs often require careful application to ensure that tax liabilities are offset correctly between countries.
As stated above, determining where you are officially a tax resident is the first consideration. This isn’t a matter of choice and depends on numerous factors, including how many days of the year you spend in each place, familial ties, business and property ownership, employment, and the location of your primary residential home.
HMRC publishes a complete list of tax treaties. The link to the full list can be found here. DTAs take precedence over domestic rules. There are also multilateral agreements that include more than one country, but events such as Brexit do not mitigate or change the relevance of a DTA.
And when you do move, Managing your tax affairs effectively means claiming relief through the correct channels, submitting accurate tax returns, and properly declaring your income and assets. These steps are essential to maximizingavailable reliefs and avoiding unintentional compliance issues. Proper planning and understanding of DTAs can make a significant difference in managing your finances effectively.
Should you transfer your pensions offshore and use a QROPS?
A QROPS can be a valuable tool for expatriates looking to optimize their retirement strategy. However, the decision to transfer requires careful consideration of both the benefits and any potential costs or tax implications.
In recent years, the decision to transfer to a QROPS has become more nuanced. The removal of the Lifetime Allowance (LTA) has significantly changed the pension landscape for expats, prompting a re-evaluation of retirement planning strategies.
Although the primary motivation for avoiding LTA charges no longer applies, QROPS can still offer several advantages, such as currency flexibility, tax efficiency, and enhanced control over how you access your retirement income. However, it’s essential to carefully evaluate the costs and tax implications of transferring, particularly with the introduction of the Overseas Transfer Charge. Depending on your country of residence and the specific terms of the QROPS, this could impact your overall retirement strategy.
International Pension Solutions for expats
Planning for retirement can be complex, especially when your life and finances cross international borders. For expatriates and those with assets in multiple countries, understanding the nuances of international pension schemes such as Self-Invested Personal Pensions (SIPPs) and Qualifying Recognised Overseas Pension Schemes (QROPS) is important. When considering SIPPs or QROPS, it is essential to understand the regulatory and tax implications in both the UK and your country of residence.
Double Taxation Agreements (DTAs) and local tax laws will play a crucial role in determining the tax efficiency of your pension strategy. Helping to ensure that your retirement strategy is both compliant and optimised for your unique circumstances.

Jessica Cook Chartered MCSI | Partner at AES International
Financial Planner for UK Residents and Specialist in Cross-Border Wealth for International Professionals & Globally Mobile Families
Meet Jessica Cook
Financial planning begins with your life, not your money. I help international professionals and families design their wealth with purpose, so they can enjoy today while protecting tomorrow.
I’m Jessica Cook, a UK-qualified Chartered Financial Planner and Partner at AES International, featured in the Times Guide to the UK’s Top-Rated Financial Advisers. I specialise in international financial planning, cross-border wealth management, and tax-efficient strategies for UK residents, expatriates and globally mobile families.
With a background in law, a former career at the Financial Times, and as a regular financial columnist, I help clients organise, protect, and grow their wealth with confidence.


























