You Are Not Choosing Greece

Nobody wakes up wanting to be a Greek tax resident. What happens is that a British person with substantial foreign income runs out of good options at home, starts comparing the ones abroad, and finds that three of the four serious candidates have a disqualifying feature. Greece wins the way a finalist wins when the other three withdraw.

That is not a criticism of Greece. It is a description of how this decision is actually made, and it matters because a comparison you have not run is a comparison you will run later, usually at the worst moment — after the offer is accepted, when a friend at dinner mentions Dubai. Better to have the four-column version now.

Start with the clock you are already on

The British non-domiciled regime ended on 6 April 2025. What replaced it is the four-year foreign income and gains regime, and the important thing about it is not its generosity but its shape. For four consecutive tax years from the first year of UK residence, qualifying foreign income and gains are fully relieved, and — unlike the old remittance basis — you can bring the money into the country freely with no further charge. Then it stops. There is no taper, no successor relief, and no transitional arrangement. In year five you are taxed on worldwide income on the arising basis like anyone else.

To qualify you must have been non-UK resident for at least ten consecutive tax years beforehand, which means the four-year window is a tool for arrivals, not a shelter for people already here. And it is not free: claiming it costs you the income tax personal allowance and the capital gains annual exempt amount, and the claimed income counts toward adjusted net income, which drags in the High Income Child Benefit Charge.

HMRC estimates roughly 17,000 individuals are eligible for the four-year regime and at least 23,000 former remittance-basis users are eligible for the Temporary Repatriation Facility — the separate window that lets pre-April-2025 foreign income and gains be brought onshore at 12% in 2025-26 and 2026-27, rising to 15% in 2027-28. Those two populations are the entire market every jurisdiction in this piece is competing for.

The tail is the part people miss

Inheritance tax moved from a domicile test to a residence test on the same date. You are now a long-term UK resident, with worldwide assets in scope for IHT, if you have been UK resident for at least ten of the previous twenty tax years. Domicile is irrelevant.

And leaving does not end it. HMRC's own table scales the tail with the length of your stay: thirteen years of residence or fewer leaves three years of continuing worldwide IHT exposure after departure, and it climbs by one year for each additional year of residence up to a maximum of ten. Someone resident for thirty years leaves with a decade of exposure behind them. A split year counts as a full year. Only ten consecutive tax years of non-residence resets the clock.

You do not leave the UK tax system on the day you land somewhere else. You leave it between three and ten years later, and the date is already fixed by how long you stayed.

This is the single most consequential number in the whole exercise and it is almost never in the brochure. It also reframes the destination question: for the first three to ten years, the receiving country's inheritance tax treatment is running alongside a UK charge you cannot escape, not instead of it.

Portugal: the one that surprises people

Portugal is still the default assumption in most British conversations about leaving, and the assumption is now roughly a decade out of date. The Non-Habitual Resident regime closed to new entrants at the end of 2023. Anyone already registered runs out their ten years; nobody new gets in.

Its replacement is IFICI, sometimes marketed as NHR 2.0, and the marketing is misleading. The formal name is the Tax Incentive for Scientific Research and Innovation, and that is what it is: a labour-market instrument. It gives a flat 20% rate on Portuguese-source employment and self-employment income and exempts most foreign income for ten years — but only if you carry on a qualifying professional activity for a qualifying Portuguese employer. The eligible professions are a defined list: company directors, engineers and physical scientists, doctors, university professors, ICT specialists. The employer must have real Portuguese substance, and industrial and service companies in the listed sectors must export at least half their turnover.

There is no investor route. There is no passive-income route. There is no lump-sum alternative of any kind. Portugal has no equivalent of the Greek €100,000, the Italian flat tax, or the Swiss forfait, and this is the fact that changes the conversation: if you are living on a portfolio rather than a salary, IFICI is not a regime you can pay to join. It is a regime you are ineligible for.

What an ordinary Portuguese tax resident faces instead is worldwide taxation on the arising basis, 28% on dividends, interest and most capital gains, and progressive rates reaching 48% — 53% with the solidarity surcharge — on anything aggregated. Foreign pensions, which the old NHR taxed at 0% and then at a flat 10%, now attract full progressive rates. For a retiree that is not a smaller benefit. It is the removal of the benefit.

Two further changes worth knowing. Real estate stopped qualifying for the Portuguese Golden Visa in October 2023; what remains is a €500,000 fund, business or research route, or €250,000 into cultural heritage. And in May 2026 the naturalisation requirement doubled from five years to ten for most third-country nationals, with the residence clock now running from the date the permit is issued rather than the date of application — which, against a backlog that has run past three years, can add several more. Applications filed on or before 18 May 2026 keep the old five-year rule. Nobody else does.

Italy: the closest comparison, and now three times the price

Italy's neo-residents regime under article 24-bis is the true structural analogue to Greece's: a flat substitute tax on all foreign-source income, no matter the amount, for a fixed term. It ran at €100,000 from 2017, went to €200,000 in August 2024, and the 2026 Budget Law took it to €300,000 for anyone transferring residence from 1 January 2026. The per-family-member charge doubled at the same time, from €25,000 to €50,000. Existing optants keep the rate they entered at.

Set beside the Greek €100,000 and €20,000 per family member, the gap is now €200,000 a year for a single filer, and €230,000 for a couple. Over a fifteen-year term that is three million euros, or three and a half — which is to say, more than the median house a relocating non-dom actually buys here. This is the single largest number in the comparison and it did not exist eighteen months ago.

Italy has genuine advantages in return. There is no minimum investment requirement at all, where Greece demands €500,000 in Greek assets within three years of applying. The term is fifteen years, the same. Inheritance and gift tax during the option applies only to assets situated in Italy. And there is a separate 7% flat tax for foreign pensioners settling in the south, which in April 2026 widened from municipalities under 20,000 inhabitants to under 30,000.

One trap, since it is consistently misreported: capital gains on qualified shareholdings are excluded from the flat tax for the first five tax periods of the option, and taxed under ordinary rules. If your exit from a business is likely inside five years of moving, that exclusion can be worth more than the whole rate difference.

The Gulf: zero, and the reason zero is complicated

The UAE has no personal income tax, no capital gains tax, no inheritance tax, no gift tax and no wealth tax. Corporate tax at 9% applies above AED 375,000, and a natural person is only in scope where UAE business turnover exceeds AED 1,000,000 in a calendar year. Employment income, personal investment income and personal real estate income are expressly outside it. On the arithmetic alone, nothing in Europe competes and nothing is close.

The complications are all structural. Managing your own portfolio through a UAE company converts personal investment activity into a business activity, and the company becomes taxable — the exemption only holds where you invest in your own name or through an unlicensed transparent vehicle. The 15% domestic minimum top-up tax introduced in 2025 catches only multinational groups above €750 million of revenue, so it is irrelevant to individuals, but it is routinely cited at them.

The residency point is sharper. There are three domestic routes to UAE tax residence — centre of interests, 183 days, or 90 days plus a residence permit and a home or job there — and a certificate obtained on the 90-day route is a domestic certificate only. To invoke the UK–UAE double tax treaty you need a treaty-purpose certificate, and that requires 183 days of actual physical presence. The distinction is where a great deal of Gulf tax planning quietly falls over.

It is also worth correcting a claim that circulates widely: the UK–UAE treaty does not define UAE residence by a 183-day count. Article 4 uses domicile, habitual abode or centre of vital interest, with no day threshold, and notably no "liable to tax" requirement on the UAE side. The 183 days belong to UAE domestic law and to the certificate process, not to the treaty text.

And the thing everyone gets wrong: a UAE residence visa, an Emirates ID and a tax residency certificate do not, between them, make you non-UK resident. That is determined solely by the UK statutory residence test. A leaver — anyone UK resident in one of the three preceding tax years — needs fewer than sixteen UK days to be automatically non-resident, or must count ties, including the country tie that arrivers can ignore. The UAE is tax-free. Leaving Britain is not automatic.

The four, side by side

• United Kingdom: four years of full relief on foreign income and gains, then the full arising basis. Ten years of prior non-residence to qualify. An inheritance tax tail of three to ten years after you leave, scaled to how long you stayed.
• Portugal: no lump-sum or investor regime exists. IFICI gives 20% and a foreign-income exemption for ten years, but only to a listed profession working for a qualifying Portuguese employer. Otherwise 28% on investment income, up to 53% aggregated, and foreign pensions fully taxed. Citizenship at ten years, from permit issue.
• Italy: €300,000 a year on all foreign income from 2026, plus €50,000 per family member, for fifteen years. No minimum investment. Inheritance tax on Italian assets only. Qualified shareholding gains excluded for the first five years.
• United Arab Emirates: nil on personal income, gains, inheritance and wealth. But 183 days of real presence for treaty access, CRS reporting since 2018, substance requirements on any structure, and the UK statutory residence test still decides whether you have actually left.
• Greece: €100,000 a year plus €20,000 per family member, for fifteen years, with €500,000 invested in Greek assets within three years. Foreign movable property exempt from Greek inheritance and gift tax. Seven of the previous eight years non-resident to qualify.

Where the arithmetic actually turns

A flat tax is a bet that your income is large. Greece at €100,000 only beats ordinary Greek taxation somewhere above roughly a quarter of a million euros of foreign income, and the further above it you are, the better the bet gets — we have run that break-even against three real income shapes. Italy at €300,000 needs three times the income to make the same sense, which is why the 2026 increase did not make Italy slightly more expensive. It moved Italy into a different bracket of client.

Above about two million a year of foreign income, the Gulf dominates on pure tax and the question becomes whether you want to live there — which is a real question, not a rhetorical one, and one that a surprising number of people answer yes to. Below about a quarter of a million, none of these regimes is worth the disruption, and the honest advice is to stay put and pay.

What is left in the middle — call it €300,000 to €2 million of foreign income, someone who wants Europe, a school run and a Mediterranean coastline — is a narrow band. It is also precisely the band Greece is priced for, which is the least romantic and most accurate explanation of why 88% of these buyers end up on one thirty-kilometre stretch of coast.

The question the four-column table cannot answer

Every jurisdiction in this piece will be sold to you on the arithmetic, because the arithmetic is the part that fits in a table. But the people who have already done this rarely cite the rate as the reason. They cite the airport, the school, the hospital they hope not to need, and whether their spouse was willing.

That is not sentimentality getting in the way of the analysis. It is the analysis. A regime you leave after three years because the family was unhappy costs more than the one you did not choose, and the difference between moving and parking an option determines which questions you should even be asking. Run the tax comparison first, by all means. Then go and spend a fortnight in February in each of the two that survive it.

Sources

1. HMRC: check if you can claim the 4-year foreign income and gains regime
2. HMRC Inheritance Tax Manual IHTM47020: long-term UK residence test and the departure tail
3. HMRC: technical amendments to the residence-based tax regime, including TRF rates
4. Cuatrecasas legal flash: Portugal IFICI regulations, Ordinance 352/2024/1
5. Sovereign Group: Portugal IFICI, including the treatment of foreign pension income
6. Italy Law 199/2025 (Budget Law 2026), art. 1 commi 25–26, amending art. 24-bis TUIR
7. Watson Farley & Williams: the Italian 2026 non-domiciled tax regime
8. UAE Cabinet Decision No. 49 of 2023: when a natural person falls within corporate tax
9. UAE Cabinet Decision No. 85 of 2022: tax residency tests for natural persons
10. UK–UAE Double Taxation Convention, in force text
11. AADE Decision A.1147/2026: the current implementing rules for articles 5A, 5B and 5C