Quick answer
Moving to the UK does not just mean changing address. It can affect how your salary, overseas income, investments, pensions, business interests and assets are taxed. The earlier you review the position, the more options you are likely to have.
Whether you are relocating for a new career opportunity, expanding your business, joining family, returning after years abroad or simply starting a new chapter, moving to the UK is a major life decision.
It can also be a major tax event.
The UK tax system can be complex, particularly for individuals becoming UK tax resident for the first time, or for those returning after a long period overseas. Before you arrive, it is important to understand when you become UK tax resident, how your overseas income and assets may be treated, and whether you may be eligible for the UK’s Foreign Income and Gains regime.
Getting this wrong can create unexpected tax liabilities, missed reliefs and unnecessary reporting problems with HMRC.
Getting advice early can make the move far smoother.
Your UK tax position starts with the Statutory Residence Test, not simply your arrival date.
Once UK resident, overseas income and gains may need careful review.
The 4-year Foreign Income and Gains regime may be valuable for qualifying new residents.
Pre-arrival planning can help avoid reporting issues, missed reliefs and tax surprises.
What this guide covers
- Moving to the UK can change your worldwide tax position
- How you become UK tax resident
- Why the 183-day rule is only part of the picture
- Split-year treatment when moving to the UK
- The Foreign Income and Gains regime
- Overseas Workday Relief for employees
- Reviewing overseas assets before arrival
- Double Tax Treaties
- Telling HMRC when you come to the UK
- Pre-arrival checklist
- FAQs
Moving to the UK can change your worldwide tax position
Once you become UK tax resident, your UK tax exposure can change significantly.
From 6 April 2025, UK residents are taxed on the arising basis on their worldwide income and gains, subject to any available reliefs, exemptions and claims. That means you should not only think about UK salary or UK income.
You also need to consider what happens to your overseas bank interest, overseas dividends, foreign rental income, investment portfolios, business interests and capital gains after you become UK resident.
Plain English point: if you are moving to the UK, your overseas income and assets should be reviewed before you arrive, not after the first UK tax return is due.
This is where early planning matters. Once the tax year has started and income or gains have already arisen, your options may be more limited.
How do you become UK tax resident?
Your UK tax residence status is determined using the Statutory Residence Test, often shortened to SRT.
The SRT looks at your position for each UK tax year separately. You may be UK resident in one tax year and non-UK resident in another, depending on your circumstances.
The test broadly includes:
Automatic overseas tests
These can make you automatically non-UK resident if specific conditions are met.
Automatic UK tests
These can make you automatically UK resident, including where your UK day count or UK home position meets the relevant conditions.
Sufficient ties test
If the automatic tests do not decide the position, your UK ties and day count may determine your residence status.
Split-year rules
In some arrival or departure cases, the tax year may be split into a UK part and an overseas part.
A simple day count is not always enough. Your UK home, family position, work pattern, previous UK presence and wider ties can all affect the outcome.
The 183-day rule is only part of the picture
Many people assume they only become UK tax resident if they spend 183 days or more in the UK.
That is not the full story.
If you spend 183 or more days in the UK in a tax year, you will usually be UK resident. However, you can also become UK resident with fewer days if you meet one of the automatic UK tests or the sufficient ties test.
Common mistake: focusing only on the 183-day rule and ignoring UK accommodation, UK work, family ties and previous UK presence.
For example, your position may be affected by whether you have a UK home, whether you work full-time in the UK, and how many UK ties you have.
This is why people moving to the UK should review their position before arrival, especially if they expect to travel regularly, work internationally or maintain overseas interests.
What about split-year treatment?
If you move to the UK part way through a tax year, you may assume you are only taxed as a UK resident from the day you arrive.
That may be the right outcome in some cases, but it is not automatic.
Under the SRT, you are normally either UK resident or non-UK resident for a full tax year. However, split-year treatment can apply where the conditions are met, splitting the year into a UK part and an overseas part.
Before moving, review:
- your planned arrival date
- when your UK accommodation becomes available
- when your UK employment or business activity starts
- whether your family is moving with you
- how much time you will spend in and outside the UK
- whether you may qualify for split-year treatment
The timing of the move can make a real difference, particularly if you receive overseas income or realise gains before or after arriving in the UK.
The Foreign Income and Gains regime
For current arrivals, the old “non-dom remittance basis” language needs careful handling.
The 4-year Foreign Income and Gains regime, often called the FIG regime, replaced the remittance basis from 6 April 2025. The regime may be available to qualifying new residents, broadly those within their first 4 years of UK tax residence after at least 10 tax years of non-UK residence.
Where the FIG regime is available and properly claimed, eligible foreign income and gains may be relieved from UK tax.
Important: the FIG regime is not automatic, and it is not available to everyone. The claim should be reviewed carefully before relying on it.
Who should consider the FIG regime?
The FIG regime may be relevant if you are moving to the UK after a long period of non-UK residence and you expect to receive foreign income or realise foreign gains during your first years of UK residence.
This might include:
- overseas investment income
- dividends from non-UK companies
- overseas bank interest
- profits from an overseas property business
- profits from a trade carried on wholly outside the UK
- foreign capital gains
A claim must be made through Self Assessment, and individuals can choose which foreign income and gains to claim relief on. There are trade-offs, so the decision needs proper modelling rather than guesswork.
Overseas Workday Relief for employees
If you are moving to the UK for work but will continue carrying out some employment duties overseas, Overseas Workday Relief may also be relevant.
From 6 April 2025, newly UK resident employees may be eligible for Overseas Workday Relief on employment income relating to duties performed outside the UK, provided they are a qualifying new resident.
This is particularly relevant for internationally mobile executives, senior employees, founders, consultants and employees with regional or global roles.
Do not leave this too late: the rules are technical, and the payroll position may also need to be considered before the first UK tax return is prepared.
Overseas assets need reviewing before you arrive
If you already have overseas assets, you should review them before becoming UK resident.
This may include:
- overseas bank accounts
- foreign investment portfolios
- overseas property
- business interests
- shareholdings
- trusts or family structures
- pensions
- cryptocurrency or digital assets
- assets standing at a gain
The key question is not just “will this be taxed in the UK?” It is also:
Timing
When does the income or gain arise, and will that be before or after UK residence begins?
Ownership
Is the asset held personally, through a company, through a trust or jointly with someone else?
Reliefs
Could the FIG regime, Overseas Workday Relief or a Double Tax Treaty affect the outcome?
Reporting
Will there be UK tax return, disclosure or overseas reporting obligations?
The answer depends on the facts.
Double Tax Treaties can help, but they do not remove the need for UK advice
Many people moving to the UK assume that a Double Tax Treaty will automatically prevent problems.
That is too simplistic.
Double Tax Treaties can help decide which country has taxing rights over certain types of income or gains, but the treatment depends on the specific treaty and the relevant domestic tax rules.
In practice, you need to consider:
- the UK tax position
- the overseas tax position
- the treaty position between the two countries
- the reporting process in each jurisdiction
A treaty may reduce double taxation, but it does not remove the need for proper planning.
Do you need to tell HMRC when you come to the UK?
In many cases, yes.
Depending on your position, you may need to register for Self Assessment, report foreign income and gains, claim FIG relief, claim Overseas Workday Relief, deal with PAYE and employment income, review National Insurance or social security issues, report UK property income, or consider Double Tax Treaty claims.
Practical point: relocating to the UK should be planned before arrival, not treated as an afterthought once HMRC deadlines begin to appear.
A practical checklist before moving to the UK
Before you relocate, it is worth reviewing the following questions:
- When are you likely to become UK tax resident?
- Could split-year treatment apply?
- Have you been non-UK resident for at least 10 tax years?
- Could the FIG regime apply?
- What foreign income and gains do you expect after arrival?
- Do you have overseas assets standing at a gain?
- Will you continue working outside the UK?
- Could Overseas Workday Relief apply?
- Will you need to register for Self Assessment?
- Could a Double Tax Treaty affect your position?
- Are there any UK reporting deadlines you need to prepare for?
The right answer will depend on your circumstances, but the wrong approach is almost always the same: arriving first and dealing with the tax later.
Planning to move to the UK?
At Expat Tax Advice, we help individuals moving to the UK understand their tax position before they arrive.
Whether you are relocating for work, returning after years overseas, expanding your business or moving for lifestyle reasons, we can help you understand the UK tax implications and plan your next steps clearly.
With the right advice, you can:
- understand how and when you may become UK tax resident
- plan efficiently for overseas income and assets
- consider whether the Foreign Income and Gains regime may apply
- avoid unexpected tax liabilities and reporting issues
- stay compliant with HMRC requirements
Your move to the UK should be exciting. It should not become a tax problem you only discover later.
🌐 www.expat-tax-advice.co.uk
☎️ +44 1249 816 810
FAQs about moving to the UK and becoming UK tax resident
These answers are general guidance only. UK tax residence and international tax treatment are fact-specific, so your position should be reviewed based on your actual arrival date, income, assets, work pattern and overseas connections.
Does moving to the UK automatically make me UK tax resident?
No. Moving to the UK does not automatically make you UK tax resident in every case. Your status depends on the Statutory Residence Test, including your UK day count, work pattern, accommodation, family position and UK ties.
What is the Statutory Residence Test?
The Statutory Residence Test is the UK framework used to determine whether an individual is UK tax resident for a particular tax year. It includes automatic overseas tests, automatic UK tests, the sufficient ties test and split-year rules.
What is the Foreign Income and Gains regime?
The Foreign Income and Gains regime is the UK regime that replaced the remittance basis from 6 April 2025. It can provide relief for eligible foreign income and gains for qualifying new residents during their first 4 years of UK residence.
Who can claim the FIG regime?
Broadly, the FIG regime is available to qualifying residents who are within their first 4 years of UK tax residence following at least 10 tax years of non-UK residence. The position needs to be checked carefully before relying on the regime.
Can I bring foreign income and gains to the UK under the FIG regime?
Where eligible foreign income and gains have been properly claimed under the FIG regime, they can generally be brought to the UK without an additional UK tax charge. The claim and eligibility position must still be reviewed properly.
What is Overseas Workday Relief?
Overseas Workday Relief may provide relief for qualifying newly UK resident employees on employment income relating to duties performed outside the UK. It is particularly relevant for globally mobile employees and internationally focused roles.
Do Double Tax Treaties stop double taxation?
Double Tax Treaties can help reduce or prevent double taxation, but they do not automatically solve every issue. The treatment depends on the wording of the treaty, the type of income or gain, and the domestic tax rules in each country.
When should I get UK tax advice before moving?
Ideally, before you arrive in the UK. Your arrival date, income timing, overseas assets, employment pattern and residence position can all affect your UK tax exposure.
This article is for general information only and should not be treated as personal tax advice. UK tax residence, the Foreign Income and Gains regime, Overseas Workday Relief and Double Tax Treaty claims are fact-specific. The correct treatment will depend on your circumstances and the rules in the relevant overseas jurisdiction.