Moving Countries With an ETF Portfolio: The Expat Investor’s Guide (2026)

Kestutis BalciunasBy ·Published July 2026

In eleven years of running a global ETF portfolio, nothing has forced me to rethink it as completely as changing countries. A market crash is uncomfortable but familiar; you sit still and it passes. Relocation is different. Overnight you answer to a new tax authority, sometimes a new broker, and occasionally a rulebook that quietly forbids the exact fund sitting in your account. A plan that took a decade to keep simple can be knocked sideways in a single tax year. This guide is the map I wish I’d had: what actually changes when you move, in what order to deal with it, and why — reassuringly — you rarely have to sell your core holding to get it right.

Why moving countries breaks a simple ETF plan

A well-built portfolio is really a set of assumptions about one jurisdiction: how your dividends are taxed, whether capital gains are taxed at all, which fund structures your regulator permits you to buy, and which wrapper shelters it. Relocation invalidates every one of those assumptions at once. That is why moving countries with an ETF portfolio is the single life event most likely to derail an otherwise disciplined investor — not because the investments are wrong, but because the rules around them have all changed on the same day.

Four things tend to move at once. The tax treatment on arrival may be gentler or far harsher than what you left. Leaving can trigger an exit tax — a bill for gains you haven’t actually realised. Any country-specific wrapper you built, such as a UK ISA or SIPP, stops behaving the way it did the moment you cross a border. And on arrival you may find restrictions on what you’re even allowed to buy. Understanding these as four separate problems, rather than one vague cloud of dread, is what makes the move manageable.

The portable-broker principle

If there is one decision that removes half the friction, it’s holding your assets somewhere that travels with you. A broker with a genuine international footprint lets you keep the same account, the same holdings and the same cost basis while you change your tax residency underneath it. You update your address and tax details; your portfolio doesn’t move at all. This is the core reason Interactive Brokers for Expats: The Default Broker When You Move Countries comes up again and again in the cross-border community — not out of brand loyalty, but because a portable account sidesteps the ugliest scenario of all: being forced to liquidate.

Contrast that with the neobrokers many of us start on. They are excellent value inside their home market and often useless the moment you leave it. Tied to one country’s regulator and one tax-reporting regime, several will freeze new purchases, close the account, or simply stop supporting you once your residency changes — and forced selling can crystallise a taxable gain on their timetable rather than yours. Before any move, the first question isn’t “what will I buy?” but “will my broker still have me as a client next year?” If the honest answer is no, sort that out while you’re still resident and calm, not mid-relocation.

Problem one: tax on arrival

The country you move to sets the terms for everything that follows, and the models differ wildly. Some tax realised capital gains. Some tax an assumed, or deemed, return on your assets whether or not you sold anything. Some levy an annual wealth tax on the total. And a handful roll out a genuinely favourable regime to attract newcomers, which can be a gift if you claim it correctly and a trap if you miss the window.

The Netherlands is the classic shock for anyone arriving with a large portfolio: instead of taxing your gains, its Moving to the Netherlands: The Box 3 Shock and the 30% Ruling system taxes a presumed return on your wealth — which can mean a bill in a year your fund actually fell. Spain runs in the opposite emotional direction, offering new arrivals a special-regime option covered in Moving to Spain: Beckham Law, Modelo 720 and Your Investments, alongside asset-reporting duties that catch people out. Switzerland famously charges no federal capital gains tax for private investors but layers on an annual wealth tax and transaction stamp duty, as I set out in Moving to Switzerland With ETFs: Wealth Tax, Stamp Duty and What Changes. And Germany, one of Europe’s most common destinations, has its own distinctive treatment of fund gains and partial exemptions, which I walk through in Moving to Germany With an ETF Portfolio. The lesson isn’t the specific numbers — those change — it’s that you must know which model you’re walking into before you arrive, because it dictates whether your accumulating global fund is still the smart default.

Problem two: exit taxes when you leave

Here is the one that ambushes people, because it’s counter-intuitive: some countries want their cut of your gains as you leave, before you’ve sold a thing. The logic is that the growth happened on their watch, so they tax the unrealised gain at departure as if you had sold. Germany is the example every EU investor should know about, and its rules have tightened: Leaving Germany With ETFs: The New Exit Tax explains how the Wegzugsbesteuerung can now reach substantial private ETF positions, not just company shareholdings. The practical takeaway is that an exit tax is a timing problem. If you know you may leave, the size of your position and the year you move can matter enormously, and these are things you can plan around only while you’re still resident. Once you’ve handed in your notice to the tax office, your options narrow fast.

Problem three: what happens to country-specific wrappers

Tax-sheltered wrappers are the hardest thing to carry across a border, because their tax-free status is a domestic privilege that other countries simply don’t recognise. A UK ISA is invisible to HMRC but usually fully visible — and taxable — to your new country’s authorities the moment you become resident there. A SIPP is stickier, given pensions sit under their own cross-border treaties, but it rarely behaves the way it did at home. If you’re leaving Britain, Moving From the UK to the EU: Your ISA, SIPP and Portfolio covers what keeps its shelter, what quietly loses it, and what you can and can’t keep contributing to once you’re gone. The general rule: you usually can’t add to a home-country wrapper once you’re non-resident, and its “tax-free” label may not survive the trip — so find out before, not after, you file your first foreign return.

Problem four: investing from outside the EU

Moving beyond the EU flips a different switch. The Irish-domiciled UCITS ETFs most of us hold are wonderfully tax-efficient, but they’re built for European distribution, and outside the bloc your access to them — not their quality — becomes the issue. A portable international broker is usually what keeps the door open. Expats in the Gulf lean on exactly this, as I describe in Investing from the UAE: How Expats Buy Irish-Domiciled UCITS ETFs, where a tax-free base makes the accumulating UCITS wrapper especially attractive. The pattern repeats in Asia — How to Buy CSPX and VUAA in Singapore shows why Irish domicile still beats US-listed equivalents on withholding tax and estate exposure — and across the emerging-Europe hubs where more of us are landing: ETF Investing in Serbia (2026) and ETF Investing in Turkey both deal with how to hold UCITS funds cleanly under local reporting. The recurring insight is that Irish domicile, chosen for its treaty network and 15% dividend withholding rate on US equities, keeps paying off well beyond Europe’s borders.

The practical sequence: before, during and after

Order matters more than heroics. I treat a move as three distinct phases.

Before you leave

Settle everything the departure country controls while you’re still its resident. Confirm your broker will keep you as a client at the new address — and if not, migrate to a portable one now. Check whether an exit tax applies and, if it does, whether the timing or size of your position can be sensibly managed. Note your cost basis and download your full transaction history while you still have easy access, because you’ll want it for both countries. Contribute the last allowable amounts to any home wrapper before the door closes.

On arrival

Establish your new tax residency date precisely — it’s the hinge every calculation swings on. Learn which taxation model applies (realised gains, deemed return, or wealth tax) and whether a favourable newcomer regime is available and time-limited. Register any assets your new country requires you to declare. Only then decide whether your current holdings still fit; often they do, and the change is in how they’re taxed, not what you own.

Settling in — and coming back

Once residency is clear, keep contributing to your global core and let the plan run. And if the move is eventually a round trip, repatriation is its own event with its own resets — re-establishing home residency, reactivating wrappers you’d frozen, and reconciling years of foreign records — which I cover in Moving Back Home: Repatriating Your Portfolio.

Why you rarely need to sell your core fund

Here’s the reassurance underneath all of this. In the large majority of moves, your broad, accumulating global equity ETF — the boring one-fund core I keep recommending in the beginners’ guide to ETFs — remains a perfectly good holding in the new country too. A globally diversified UCITS fund is not a domestic product; it’s a portable one. What changes is the tax wrapper around it and the paperwork you file, not the fund itself. Selling reflexively “to be safe” is how people trigger avoidable capital gains and lock in a tax bill they never needed to pay. The one situation that genuinely forces a change is a rare local restriction on the specific fund — in which case the fix is a near-identical UCITS alternative, easily found by comparing UCITS ETFs on domicile, replication and cost, rather than a wholesale rebuild.

The honest caveat

Tax is the most country-specific and time-specific part of investing, and it moves faster than any fund. Germany’s exit tax, the Netherlands’ Box 3 system and Spain’s newcomer regime have all shifted within the span of a single portfolio’s life, and they’ll shift again. Treat this guide as the framework and each linked country piece as the current detail — but before you file anything, confirm the specifics with a local tax adviser who knows your exact situation. The cost of an hour of professional advice is trivial next to the cost of getting an exit tax or a wealth-tax declaration wrong. Move deliberately, keep your records, hold a portable account, and relocation becomes what it should be: a change of address, not a demolition of your plan.

Related reading: Inheriting in the Netherlands.

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Frequently asked questions

Q: Do I have to sell my ETFs before moving to another country?
A: In most cases, no. A broadly diversified, Irish-domiciled UCITS ETF is a portable holding that remains valid in almost every destination, so what usually changes is how it's taxed and reported, not the fund itself. Selling reflexively can trigger a capital gains bill you didn't need to pay. The main exception is a rare local restriction on that specific fund, which you solve with a near-identical UCITS alternative rather than a full rebuild.

Q: What is an exit tax and which countries charge it?
A: An exit tax bills you for the unrealised gains on your investments as you leave, treating your departure as if you had sold — even though you haven't. Germany is the best-known example among EU investors, and its Wegzugsbesteuerung rules have widened to catch larger private ETF positions. Because it's fundamentally a timing and position-size problem, you can only plan around it while you're still resident, so check before you announce your move.

Q: Can I keep my UK ISA or SIPP if I move to the EU?
A: You can usually keep the accounts open, but their tax-free status is a UK privilege that other countries don't recognise. An ISA is typically invisible to HMRC yet fully taxable to your new country's tax authority once you're resident there, and you generally can't contribute to it as a non-resident. A SIPP is treated more favourably because pensions fall under cross-border treaties, but it rarely behaves exactly as it did at home, so confirm the local treatment before you file your first foreign return.

Q: Why is Interactive Brokers recommended so often for expats?
A: Because it's a portable account: it lets you keep the same holdings and cost basis while you change your tax residency underneath it, simply by updating your address and tax details. Many neobrokers are tied to a single country's regulator and will freeze purchases or close the account when your residency changes, sometimes forcing a taxable sale on their timetable. A broker that travels with you removes the worst-case scenario of being pushed to liquidate mid-move.

Q: Can I still buy Irish-domiciled UCITS ETFs after leaving the EU?
A: Usually yes, provided you hold them through an international broker that supports you in your new country. UCITS funds are built for European distribution, so outside the EU the challenge is access rather than the quality of the fund. Irish domicile keeps paying off abroad thanks to its treaty network and the 15% US dividend withholding rate, which is why expats in places like the UAE, Singapore, Serbia and Turkey continue to hold them.

Q: What is the Netherlands Box 3 shock?
A: The Netherlands doesn't tax your realised capital gains the way many countries do; instead its Box 3 system taxes a presumed, or deemed, return on your total wealth. That means you can face a tax bill in a year your portfolio actually lost value, which surprises arrivals used to gains-based systems. New arrivals may also qualify for a favourable ruling that reduces the impact for a limited period, so it's worth understanding both before you become resident.

Q: In what order should I handle the financial side of relocating?
A: Deal first with everything your departure country controls while you're still resident: confirm your broker will keep you, check for any exit tax, and download your full transaction history and cost basis. On arrival, pin down your exact residency date, learn which taxation model applies, and register any assets you're required to declare. Only after that should you decide whether your holdings still fit — and in most moves they do, so you keep contributing to your global core rather than rebuilding it.

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Kestutis Balciunas, founder of Financial Expert Class
Kestutis Balciunas
European UCITS/ETF investor with 11+ years building a global dividend and index portfolio, and founder of Financial Expert Class. I write every guide here from first-hand experience investing across EU brokers and tax regimes — not theory.
Risk disclaimer: Investing always involves the risk of losing your capital. Past performance and predictions do not guarantee future results. Do your own research and consider consulting a qualified financial advisor before making any investment decisions.