Portugal has become one of the most popular destinations for people leaving the UK — the climate, the coastline, and a residency route that has drawn retirees, remote workers and families. What gets less attention than the property search is the financial admin, which sits across two tax systems and is almost always easier to handle before you leave than after. None of it is complicated on its own; the trouble is that nobody hands you the full list, so things slip — an ISA left contributing when it can’t, HMRC never told, a will that still only covers UK assets.

This is that list, in three stages: what to sort before you leave the UK, what needs doing in your first few months in Portugal, and what becomes an ongoing habit once you’re settled. None of it is personal advice — every situation needs its own conversation — but it’s a solid starting map.

Before you leave the UK

Tell HMRC you’re going. If you’re leaving the UK to live in Portugal, HMRC needs to know, generally via a form completed when you file your final UK tax return (or separately if you don’t normally file one). This starts the clock on your UK tax residency status changing. The UK and Portugal have a double tax treaty governing which country taxes what, but you still need to establish clearly when your UK residency ends.

Work out what happens to your UK bank accounts. Some UK banks keep accounts open for non-residents; others close or restrict them once your address changes to Portugal. Keeping at least one UK account is often useful for sterling income, standing orders and pension payments — but check with each provider rather than assuming.

Check your ISA. You can generally keep an existing ISA open once you leave, but you typically can’t pay new money in once you’re no longer UK tax resident. Just as importantly, the ISA’s tax-free status is a UK concept — Portugal doesn’t necessarily recognise the wrapper, so income and gains inside it may be treated quite differently under Portuguese tax once you’re resident. That mismatch catches a lot of people out. See our full piece on what happens to your UK ISA when you move abroad.

Don’t forget your UK pension. Whatever you hold — workplace pension, personal pension, or SIPP — it stays a UK-regulated asset wherever you live. Rather than assuming it can be folded into a Portuguese arrangement, the sensible move is to know what you hold, consider consolidating old or scattered schemes so they’re easier to manage from abroad, and take advice on how the income is taxed once you’re resident. We’ve covered the principle of a UK pension staying UK-regulated in our piece on what happens to your UK pension when you move abroad: the starting point is always review and keep it UK-regulated, don’t assume it transfers.

Review your protection cover. Life cover, income protection, and critical illness cover bought in the UK don’t always travel well — some policies exclude claims once you’re resident abroad, others simply lapse. Check the wording before you assume anything carries over.

Sort your UK tax position for the year you leave. Splitting a tax year between UK and Portuguese residency has its own rules, and getting it wrong can mean paying more tax than necessary in either country. A genuine “speak to a cross-border tax advisor” situation — the rules depend on dates, income sources, and remaining ties to the UK.

Update your will — or at least flag that you’ll need to. A UK will doesn’t automatically stop working when you move, but it may not deal sensibly with assets you acquire in Portugal, or with Portuguese succession law, which handles inheritance differently from the UK. Worth putting on the list now even if you action it after you land.

Your first few months in Portugal

Register as resident and get your tax number. Settling in Portugal involves formally registering your residency and obtaining a Portuguese tax identification number, which you’ll need for almost everything — opening a bank account, signing a lease, setting up utilities. Getting it early smooths out much of the admin that follows.

Open a Portuguese bank account. You’ll need this fairly quickly for day-to-day life, and most banks will ask for your tax number, proof of address, identification, and sometimes proof of income. Requirements vary by bank, so check what a given provider needs before you arrive if you can.

Understand Portuguese tax residency and the NHR concept. Once you’re tax resident, Portugal taxes you on your worldwide income — not just what you earn locally — with relief mechanisms for income already taxed elsewhere under the double tax treaty. Portugal has historically operated a Non-Habitual Resident (NHR) regime offering favourable treatment of certain foreign income for a period after arrival; the rules around it have changed over time and eligibility is specific, so understand the concept and then take advice on whether it applies to you. Whether and when you become tax resident depends on physical presence and other tests — general shape only here; the specifics need a tax advisor.

Register for healthcare. Portugal has a public healthcare system that residents can register to use, and many expats also take out private cover for shorter waiting times and English-speaking care. Sorting this early avoids a gap in cover while you settle in.

Think about euro versus sterling. Once you’re drawing income in sterling and spending in euros, currency movement stops being a one-off event and becomes an ongoing part of your financial life — a pension paid in pounds and costs in euros means exchange rates quietly affect your real income month to month. Worth planning for deliberately rather than reacting to the rate as it moves.

Start a Portuguese will (or update your existing one properly). Once you have assets, accounts, or property in Portugal, it’s worth having a will that specifically covers them under Portuguese law, ideally working alongside whatever you have in the UK rather than replacing it. Portuguese succession rules differ from UK ones, and expats often assume a single will “covers everything” — it frequently doesn’t.

Locate your important documents. Marriage certificates, UK pension statements, National Insurance number, existing policy documents — the kind of paperwork that’s easy to leave behind and painful to request from overseas once you need it for something official.

Ongoing, once you’re settled

Review your full financial picture as a whole, not as separate UK and Portuguese pieces. A UK pension, cash in two currencies, ISAs that no longer behave as they did at home, and cover in two countries can each make sense individually and still add up to something disorganised. Worth stepping back periodically and looking at the whole together.

Keep your currency exposure under review. Where your savings and investments sit — sterling, euro, or a mix — matters more the longer you live in Portugal, and what suited you in year one may not suit you in year five.

Revisit your tax residency status if your circumstances change. Time spent back in the UK, a change in where your income comes from, the end of an NHR period, or a change in family circumstances can all shift your position — it isn’t a one-time decision.

Check in on cover and wills every few years. Life changes — a new property, a growing family, a change in health — and cover or estate planning arranged years ago doesn’t always keep pace automatically.

Where this fits together

None of these steps are complicated in isolation. The difficulty is that they touch two countries, two tax systems, and two currencies at once, and it’s easy for one piece to fall through the cracks — a UK pension left untouched, an ISA nobody checked against Portuguese tax, a will that only covers half your assets. Rarely disasters, but far cheaper to sort out properly than to unwind later.

Our free offshore guide covers the broader basics of investing and moving money as an expat, and is a reasonable starting point if you’re still early in the process. If you’re British specifically, the wider guide for British expats goes deeper on UK residency, ISAs, pensions and domicile — the things that change most when you leave the UK. For a Portugal-specific angle on where your investments sit once you’re resident, our guide to offshore investing for expats in Portugal goes deeper. And if you’re already partway through a move, that’s exactly the kind of conversation a short introductory call sorts out faster than piecing it together yourself.

Frequently asked questions

Do I need to tell HMRC I’m moving to Portugal?

Yes — generally via a form completed with your final UK tax return, or separately if you don’t normally file one. This starts the clock on your UK tax residency status changing when you leave for Portugal.

Can I keep my UK ISA after moving to Portugal?

You can generally keep an existing ISA open, but you typically can’t pay new money in once you’re no longer UK tax resident — and Portugal doesn’t necessarily recognise the ISA wrapper as tax-free, so it may be taxed there differently than in the UK.

Can I transfer my UK pension to Portugal?

Your UK pension stays a UK-regulated asset wherever you live. Rather than assuming it can be moved into a Portuguese arrangement, the sensible step is to review what you hold, consider consolidating old schemes, and take advice on how it’s taxed once you’re resident in Portugal.

Do I need a Portuguese will?

Once you have assets, accounts or property in Portugal, it’s worth having a will that specifically covers them under Portuguese law — ideally working alongside your UK will rather than replacing it, since succession rules differ between the two countries.

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This article is for general information only and does not constitute financial, tax, or legal advice. Rules on tax residency, the NHR regime, and cross-border pensions are detailed and change over time — always confirm current requirements and seek advice specific to your circumstances before making decisions.