Leaving the UK does not automatically remove you from the UK tax system, nor does it mean you automatically stop paying tax in the UK.
At Experts for Expats, this has been one of the most common tax mistakes we’ve seen and continue to see, and it’s the one our partners tend to answer more frequently than any other.
In a nutshell, if you continue to receive income from UK sources after you move abroad, you will usually still have UK tax obligations. What changes when you live abroad is how that income is taxed, how it interacts with your new country of residence and what you need to report in both countries.
This article looks at typical scenarios, where to start, what to do next, when to seek help and ultimately how we can help you.
Disclaimer
This article is for general information only and does not constitute tax advice. Tax treatment depends on your individual circumstances, including your residency status, the type of income you receive and the country you move to. You should seek personalised advice before making decisions.
Starting point: your situation falls into one of three primary categories
In reality, most people fall into one of these three scenarios:
- You leave the UK and become non-resident, but keep UK income
- You leave, but remain UK tax resident for a period
- You split your time or work across two or more countries
There are other scenarios, but these are the ones we see most frequently.
Each leads to a different outcome and understanding which applies to you will provide you a starting point for establishing your tax situation.
You therefore need to answer the following questions:
- Are you still a UK tax resident?
- What type of income are you receiving from the UK?
- Where do you owe tax?
- Will you have to pay tax twice?
- What do you need to do to minimise your tax obligations and comply with all relevant tax rules?
Below we summarise how to answer these questions before identifying common mistakes, limitations of getting answers online and at what stage it makes sense to get professional advice.
1: Are you still UK tax resident?
Your UK tax position is determined by the Statutory Residence Test (SRT). At some stage you will either need to familiarise yourself with the SRT or get a qualified tax professional to apply the rules to you.
The SRT is essentially a flow chart which asks a series of questions which will lead to a decision about whether you are a UK tax resident or not. For some people this is pretty straight forward, but for others it can get complicated, especially if you leave/arrive part way through the tax year.
Once you have established whether you are a UK tax resident or not, the following will apply:
- If you remain UK tax resident, you are generally taxed on your worldwide income
- If you become non-resident, the UK usually taxes only your UK income
In practice, this is rarely as clear-cut as it sounds.
- Residency in the year you leave can be complex
- Time spent back in the UK can affect your status
- Work and family ties can keep you within the UK system
This is often the first point where incorrect assumptions are made.
2. What type of income are you receiving from the UK?
Different types of income are treated differently, and this is where the detail begins to matter.
UK property income (rental income)
Rental income from UK property is almost always taxable in the UK, even if you are non-resident. You may need to register under the Non-Resident Landlord Scheme and continue filing UK tax returns.
However, your new country may also tax that income.
A common scenario we see weekly is someone moving abroad, renting out their UK property and assuming the UK (or their home country) is the only country involved. In practice, many countries tax worldwide income, meaning the same income must be reported in both places.
Employment income
If you continue working for a UK employer, the key question is where the work is physically carried out.
- Work performed in the UK is typically taxed in the UK
- Work performed abroad may be taxed in your new country
This is particularly relevant for remote workers, where assumptions are often based on the location of the employer rather than the location of the work.
UK pensions
Pensions are one of the most misunderstood areas as their tax treatment depends on the Double Taxation Agreements between the UK and your new country of residence.
- Some countries tax pensions locally
- Others allow the UK to retain taxing rights
- Some treat state and private pensions differently
This is rarely straightforward and often misinterpreted.
Dividends and interest
Investment income from UK sources may still be taxable, but the treatment varies depending on:
- Your residency status
- The type of investment
- The rules in your new country
In some cases, withholding taxes apply and relief may need to be claimed.
3. Where do you owe tax?
Once you’ve established your UK tax residence status and the type of income coming from the UK, it’s essential that you establish which other countries have the right to tax you.
For most people we assist, this means two places, but it can be more:
- The UK, because the income comes from the UK
- The country you move to, if you become tax resident there
Establishing your tax residence status in another country is a different test, but more commonly based on how many days you spend in that country – although not exclusively.
The country you live in will assess whether you are tax resident under its own rules. If you are, it will often tax your worldwide income, including your UK income. This is the point where your position becomes cross-border, more complex and definitely more stressful.
4. Will you have to pay tax twice?
The UK has Double Taxation Agreements with most other countries, each designed to prevent the same income being taxed twice.
In practice:
- One country usually has primary taxing rights
- The other provides relief, often through a tax credit
However, this does not remove complexity.
- You may still need to file tax returns in both countries
- Relief is not always automatic, you may need to apply to tax credits or reliefs
- Timing differences can affect when money is paid, which could mean you’re out of pocket for a period of time
5. What do you need to do to minimise your tax obligations and comply with all relevant tax rules?
Once you understand all of the above, or at least have a good idea of where you might stand, it’s essential to get things right in practice and at the right time.
This is where people tend to encounter problems because the rules are complex and also unique to your own situation. It’s possible to get the basics right, but to correctly apply all the rules, identifying the relevant tax reliefs and ensuring you pay only the right amount of tax requires experience, as well as expertise. The order in which these steps are taken can affect the outcome.
Therefore, before you leave the UK, you should already know:
- Your expected residency status in all relevant countries
- How your current and future income will be taxed in each country
- When to notify HMRC of your departure and how to do it
Once you have formally left the UK, you will need to know:
- If you need to continue filing UK tax returns and how you’re going to do this (it’s more difficult for individuals once you move abroad)
- How to report income and then how to calculate and pay tax in your country of residence
- Which tax reliefs can be applied and how to do this without affecting your cashflow
AI and articles like this one can help you understand the rules, and what to look out for but applying them correctly is where most issues (and stresses) arise.
This is typically where people move from information to formal advice from a trusted expert.
Where people tend to get this wrong
Across most scenarios, the same patterns appear:
- Assuming leaving the UK ends UK tax obligations
- Misunderstanding residency status
- Not reporting UK income in their new country
- Assuming tax treaties “handle everything”
- Taking advice that only considers one country
These are common issues that we and our partners deal with on a daily basis throughout the year. In most cases it’s possible to fix any errors before they become too stressful and expensive, but the sooner you recognise a potential problem, the more easily it can be resolved.
One thing that’s clear: ignoring the problem is most definitely not going to help. Tax regimes communicate with each other. They also have more visibility on peoples’ travel and finances than ever before. If you try to hide, you will be found and your problems will be exacerbated unnecessarily.
Where online research and social media helps and when it’s limited
It is entirely reasonable to start with general research using all the tools available through the internet.
Tools like ChatGPT, search engines, social media and articles can all help you understand the structure of the rules, the terminology involved and the types of issues you may need to consider.
This is a useful first step in building confidence and identifying the right questions to ask, and it’s probably why you’re still reading this article.
But the disclaimer about not using articles and online resources to make decisions is real. Your situation is not general, it is specific and unique which means it’s easy to miss something important which could change what tax you owe and where.
They cannot reliably apply those rules to your specific situation without detailed, fact-specific input about you and your entire situation.
This becomes vital when making decisions.
For example:
- Deciding whether to rent out a UK property or sell it before leaving
- Understanding how employment income will be taxed across borders
- Interpreting how a tax treaty applies to your pension or investments
- Structuring the timing of your departure
At this stage, the outcome depends on how multiple rules interact across jurisdictions and how those rules are applied in practice.
Why speaking to an expert is important and when it becomes essential
Many of the key decisions are made before or shortly after leaving the UK including:
- How income is structured
- Where tax is paid first
- How reporting obligations are handled
Once income is being received and being reported incorrectly, options can become more limited and expensive.
A specialist tax expert with cross-border experience can:
- Interpret how the rules apply to your exact circumstances
- Identify risks that are not obvious from general guidance
- Explain the practical steps required before and after you leave
- Help you avoid common mistakes that lead to delays, additional tax or ongoing reporting issues
Just as importantly, they provide structure and remove the stress by taking responsibility for your situation. Many of the challenges people face are not caused by a lack of information, but by uncertainty about what to do, in what order and what matters most.
It’s also important to speak to someone at the right time, which will often be when your plans go from hypothetical to reality. This would normally be within 6 months of your move, but it will depend on your situation.
It’s never too early to establish a relationship and the specialist will be able to clarify when it’s too soon to pay for help and support.
Having a healthy understanding of your situation before speaking to someone will help you ask the best questions and understand the answers, even if you intend to handle your entire situation.
How Experts for Expats can help
If you are leaving the UK but expect to retain UK income, the most useful first step is understanding how your specific situation fits within the rules.
Our introduction services are unique and help people by connecting you with someone who can:
- Review your circumstances and plans
- Identify the potential cross-border tax complexities
- Provide you with a plan and structure for proceeding
- Handle your tax affairs, ensure you’re reporting correctly and guide you through any tax reliefs
When you’re ready, use our free introduction service and we’ll evaluate your enquiry and connect you with one of our trusted tax partners.
At all times, remember that leaving the UK does not remove UK tax obligations, tax is based on residency, not where you think you live and UK income does not mean UK-only tax.