HMRC Rules for UK Income While Living Abroad

So you've packed your bags, said goodbye to the UK weather, and started your new life abroad. Freedom at last, right? Not so fast. If you're still earning money with UK connections: whether that's a salary, rental income, or a pension: HMRC hasn't quite let you go yet.

The good news? You might not owe as much UK tax as you think. The bad news? The rules are complicated, and getting them wrong can be expensive. Let's break down exactly what HMRC expects from you when you've left the UK but kept the income flowing.

Step One: Are You Actually Non-Resident?

Before we dive into what income you owe tax on, you need to figure out your tax residency status. This is the foundation of everything else, and HMRC uses something called the Statutory Residence Test (SRT) to work it out.

Here's the quick version: if you spend 183 days or more in the UK during a tax year (April 6 to April 5), you're automatically a UK resident. That means you'll pay UK tax on your worldwide income, just like you never left.

If you spend fewer than 183 days in the UK, things get more nuanced. The SRT looks at various "ties" to the UK: things like family, accommodation, work, and how much time you've spent in the UK in previous years. The fewer ties you have, the more days you can spend in the UK without becoming resident again.

The takeaway: Don't assume you're non-resident just because you moved abroad. Check your status properly, or you could be in for a nasty surprise. If you're unsure, we offer a UK tax residency assessment that cuts through the confusion.
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Employment Income: The Workday Split

Let's say you're working for a UK employer while living abroad. Are you taxed on your full salary? Not if you're non-resident.

HMRC only taxes you on the portion of your salary that relates to duties performed in the UK. If you're doing all your work from Barcelona or Dubai, you won't owe UK tax on that income (though you'll likely owe tax wherever you're living instead).

The calculation is based on workdays. If you worked 200 days in total during the year, and 20 of those were physically in the UK, then roughly 10% of your salary is subject to UK tax. HMRC calls this "workday apportionment," and it's their way of being fair about what they can actually claim.

Important note: If you're still UK resident (even if you're living abroad most of the time), you'll generally pay UK tax on your full employment income from a UK employer. You might get some relief through a double taxation agreement, but that's a separate issue we'll get to later.
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Self-Employment Income: Where Did You Do the Work?

Self-employed? The rules are similar but slightly different. If you're non-resident, you're only taxed on self-employment income that arises in the UK. That includes:

• Income for work physically done in the UK
• Income from a business with a permanent establishment (like an office) in the UK

If you're working entirely from abroad with no UK base, your self-employment income generally won't be subject to UK tax. But keep proper records of where you were when you did the work: HMRC might ask for proof.

Rental Income: You Can't Escape This One

Here's where things get sticky. If you own property in the UK and rent it out, you owe UK tax on the rental profits: regardless of whether you're resident or not. It doesn't matter if you live in Singapore, Spain, or on a boat in international waters. UK property income is UK-taxable income, full stop.

As a non-resident landlord, you're required to register with HMRC's Non-Resident Landlord (NRL) scheme and file a Self Assessment tax return each year. Your letting agent or tenant should be deducting tax at source (20%) unless you've applied for approval to receive rent gross.

For a full breakdown of how this works, check out our tax guide for non-resident landlords.
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Pension Income: Still Taxable (Usually)

If you're receiving a UK pension while living abroad, that income generally remains taxable in the UK: unless a double taxation agreement says otherwise. Most treaties allow the UK to keep taxing your pension, but some give the taxing rights to your country of residence instead.

If you're non-resident and receiving UK pension income, you'll need to either:
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• Declare it on your UK Self Assessment tax return, or
• Complete a DT-Individual form to claim treaty relief and reduce or eliminate UK tax

This is one area where professional advice pays for itself quickly, because the rules vary depending on which country you're in.

Capital Gains on UK Property: The 60-Day Rule

Sold a UK property after you left? You're still on the hook for UK Capital Gains Tax (CGT), whether you're resident or non-resident.

Here's the crucial bit: you have 60 days from completion to report the sale and pay any CGT owed. Miss that deadline, and HMRC will charge you penalties and interest. This is a newish rule (introduced in 2020), and a lot of people still don't know about it.

The reporting is done through a separate online system: not your usual Self Assessment return. You calculate the gain, apply any available reliefs (like Private Residence Relief), and pay what you owe. Simple in theory, stressful in practice if you're not prepared.

For more detail on this, our UK capital gains on property page walks you through the whole process.

Double Taxation Agreements: Your Safety Net

Here's the part that stops you from paying tax twice on the same income. The UK has double taxation agreements (DTAs) with over 130 countries, and these treaties set out who gets to tax what.

For example, many DTAs include the 183-day rule for employment income: if you spend fewer than 183 days in the foreign country during a 12-month period and you're employed by a UK-resident employer, your salary might only be taxable in the UK (and vice versa).

DTAs also cover things like pensions, rental income, and dividends. The treaties vary by country, so you can't assume the rules that applied when you lived in France will be the same now that you're in Australia.

To claim treaty relief, you'll usually need to:

1. Declare the income on your UK tax return
2. Complete a DT-Individual form (or equivalent)
3. Submit it to the foreign tax authority to get reduced withholding tax

We've written a separate guide on how to avoid paying tax twice that goes deeper into how DTAs work in practice.
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How to Report Everything to HMRC

If you're non-resident but still have UK-source income, you'll need to file a UK Self Assessment tax return each year. This includes:

• The main SA100 form
• The non-residency pages SA109 form
• The treaty non-residency pages HS302 or HS302 pages
• Any supplementary pages for employment, self-employment, or rental income

You'll also need to declare your residency status and explain why you think you're non-resident. HMRC cross-checks this stuff with data from other countries, so don't be tempted to "forget" about UK income just because you're living abroad. The penalties for non-disclosure can be steep.

If you're a digital nomad working remotely or moving between countries frequently, keeping on top of your filing obligations in multiple jurisdictions gets complicated fast. That's where specialist UK tax advice for expats becomes essential.

The Bottom Line

Living abroad doesn't automatically sever your UK tax ties. If you're earning UK income: whether from employment, self-employment, rental properties, or pensions: HMRC will want their share, at least on the income that arises in the UK.

The key is understanding your residency status and knowing which income streams are still taxable in the UK. Get it right, and you'll only pay what you actually owe. Get it wrong, and you could face penalties, interest, and a whole lot of stress.

If you're feeling overwhelmed by all this, you're not alone. UK tax planning when abroad is genuinely complex, and the rules change depending on where you're living and what type of income you're earning. That's exactly why we exist.