Here’s something that catches almost every UK expat in Portugal off guard: that 25% tax-free pension lump sum you’ve been promised by HMRC since the day you started saving? In Portugal, it is not tax-free.

I have this conversation in my Algarve office at least once a month. A client walks in, retirement on the horizon, ready to take the famous “25% tax-free cash” and put it towards a villa, a boat, or just topping up the rainy-day pot. Then I have to be the bearer of slightly awkward news. In this guide I’ll explain exactly how the Portuguese tax authority (the AT) treats your UK pension lump sum, what the UK-Portugal Double Taxation Treaty actually says, and the planning moves that can save you tens of thousands of euros if you get the timing right.

What the UK 25% Tax-Free Lump Sum Actually Is

In UK pension language, the 25% tax-free lump sum has two technical names: the Pension Commencement Lump Sum (PCLS) and, since April 2024, the Lump Sum Allowance (LSA). Both refer to the same idea — when you start drawing from a defined contribution pension at age 55 (rising to 57 in 2028), you can usually take up to a quarter of the pot without paying any UK income tax on it.

The 2024 reforms abolished the Lifetime Allowance and replaced it with a flat Lump Sum Allowance of £268,275. That is the maximum tax-free cash a UK resident can take across all their pensions over a lifetime. For most savers this is more than enough room. But — and this is the bit nobody mentions in the pension brochure — the “tax-free” promise only applies if you are a UK tax resident at the time you take it.

The moment you become Portuguese tax resident, the UK piece of the puzzle becomes only half the story. Now you have a second tax authority interested in your pension, and the Portuguese tax authority does not recognise the UK concept of a tax-free lump sum.

How Portugal Treats UK Pension Withdrawals

Portugal taxes worldwide income for its tax residents. Once you have spent more than 183 days in Portugal in a calendar year, or your main home is here, you are a tax resident and your UK pension falls into the Portuguese system. The Portuguese tax authority makes no distinction between a “lump sum” and “regular drawdown income” — both are pension income, full stop, and both are taxed as such.

For pensioners outside the old Non-Habitual Resident regime, that means UK pension withdrawals (lump sum or otherwise) are added to your other income and taxed at Portugal’s progressive income tax rates. In 2026, those rates run from 13% on the first €8,059 up to 48% on income above roughly €83,696. A solidarity surcharge of 2.5% to 5% applies to higher incomes on top.

The result? A British retiree who takes the full £268,275 tax-free cash in their first year of Portuguese residency could face a Portuguese income tax bill of well over €100,000 on a withdrawal that, just a flight earlier, would have been entirely free of UK tax. In my experience working with clients in the Algarve, this is the single most expensive misunderstanding in expat retirement planning.

What the UK-Portugal Double Taxation Treaty Actually Does

Many expats assume the UK-Portugal Double Taxation Treaty must somehow protect the 25% tax-free element. It does not. The treaty exists to make sure you are not taxed twice on the same income — it does not preserve UK tax reliefs after you become a Portuguese resident.

Under Article 17 of the treaty, pensions paid in respect of past private employment are taxable only in the state of residence. So once you are Portuguese tax resident, the UK gives up the right to tax most private pensions, including SIPPs and personal pensions. You apply for an NT (No Tax) code from HMRC, which stops the UK deducting tax at source, and Portugal then taxes the full payment under Portuguese rules. There is no carve-out for the 25% lump sum.

UK Government and public service pensions are different — they remain taxable in the UK regardless of where you live — but they must still be declared in Portugal and may push you into a higher Portuguese tax bracket through the “exemption with progression” mechanism.

The NHR and IFICI Question

The old Non-Habitual Resident (NHR) regime, which ran until 2024, taxed most foreign pension income at a flat 10%. Those who qualified before the deadline can keep that rate for the remainder of their 10-year window. If you are still inside an NHR period, a lump sum taken now is taxed at 10% in Portugal rather than progressive rates — a meaningful saving, though obviously not zero.

For new arrivals from 2024 onwards, the replacement IFICI regime (Incentive for Scientific Research and Innovation) is much narrower. It targets highly skilled professionals in specific industries and, crucially, does not give pensioners the favourable foreign income treatment that NHR offered. If you are moving to Portugal as a retiree today, you are most likely on the standard progressive tax scale from day one.

Planning Moves That Can Save You Real Money

None of this means taking your pension as a UK expat in Portugal is a bad idea — it just means timing and structure matter enormously. Here are the planning moves I most often recommend to clients in this situation.

1. Take the 25% in the year before you become Portuguese tax resident. If you draw your tax-free cash while still UK resident, you genuinely pay zero income tax on it. Move to Portugal in the following tax year and the lump sum is yours, clean. This single decision can save six figures.
2. Split the lump sum over multiple tax years. If you are already Portuguese resident, drip-feeding withdrawals across several years can keep you in lower tax brackets rather than getting hit with the 48% top rate in one go. Uncrystallised Funds Pension Lump Sums (UFPLS) and phased drawdown are the usual tools.
3. Use the NHR clock if you have it. Clients still inside their 10-year NHR window often benefit from accelerating withdrawals while the 10% rate still applies. After NHR expires, the same withdrawal could be taxed at three or four times the rate.
4. Consider an investment bond. Portuguese-compliant investment bonds enjoy favourable tax treatment — only the gain portion of withdrawals is taxed, and after eight years the effective rate drops to 11.2%. For a long retirement, this structure can dramatically beat holding the same investments inside a SIPP that pays full Portuguese rates on every withdrawal.
5. Beware the QROPS sales pitch. Transferring to a Qualifying Recognised Overseas Pension Scheme is sometimes the right answer, but more often it is sold by people who earn commission on the transfer. The Overseas Transfer Charge of 25% now applies to many EEA transfers, and the fees inside QROPS can be punishing. Get truly independent advice before signing anything.

A Real-World Example

Take a hypothetical client — call him David, age 60, recently moved to the Algarve with a £600,000 SIPP. David assumed he could take £150,000 tax-free in his first Portuguese year. In reality:

If David takes that £150,000 (roughly €174,000) while Portuguese tax resident and outside any NHR window, the Portuguese tax bill on that one withdrawal would be in the region of €70,000 to €75,000 at progressive rates. Had David taken the same £150,000 in March 2026 while still UK resident, and only moved to Portugal in the new UK tax year on 6 April, the UK tax bill would have been zero. The difference: about €70,000 — enough to fund three or four years of comfortable Algarve living.

This is not theoretical. It is the conversation I have had repeatedly with new arrivals who wish they had spoken to an adviser six months earlier.

Frequently Asked Questions

Is my UK 25% pension lump sum really taxable in Portugal?

Yes, in most cases. Once you are Portuguese tax resident, the UK-Portugal Double Taxation Treaty hands taxing rights on private pensions to Portugal, and Portuguese tax law makes no distinction between a tax-free lump sum and other pension withdrawals. The UK treats it as tax-free; Portugal treats it as ordinary pension income.

What if I take the lump sum just before moving to Portugal?

If the payment is made while you are still UK tax resident — and you have not yet triggered Portuguese residency — the UK rules apply and the 25% is genuinely tax-free. Timing the move carefully around the UK tax year (which runs 6 April to 5 April) and the Portuguese 183-day rule is often the single biggest planning opportunity for expats.

Does NHR protect my pension lump sum?

If you registered for NHR before the regime closed in 2024 and are still inside your 10-year window, foreign pension income is taxed at a flat 10% in Portugal. That includes lump sums. It’s far better than the standard 48% top rate, but still not zero.

What about UK State Pension and government pensions?

The State Pension is taxable only in Portugal under the treaty (Article 17). UK Government and public-service pensions (Civil Service, Armed Forces, Police, NHS, teachers) remain taxable in the UK and are exempt in Portugal — but they still affect your Portuguese tax band through “exemption with progression”.

Can I just leave the lump sum in the UK and not tell Portugal?

No. As a Portuguese tax resident you must declare worldwide income on your annual IRS return. Both HMRC and the AT exchange information automatically under the OECD Common Reporting Standard, and undeclared pension withdrawals are one of the more common triggers for AT enquiries into UK expats.

What to Do Next

The 25% tax-free lump sum is one of the most valuable features of UK pension planning — but only if you take it under the right tax jurisdiction. Timing your withdrawals around your residency change can save tens of thousands of pounds, and the rules are unforgiving once the move is done.

If you are planning a move to Portugal in the next 12 to 24 months, or you are already here and weighing up your pension options, this is exactly the kind of decision where a one-hour conversation with a cross-border specialist tends to pay for itself many times over. Get in touch with our team and we’ll walk through your specific situation — UK pension structure, Portuguese tax position, NHR window if you have one — and map out the most tax-efficient path forward.

You may also find our related guides useful: our plain-English breakdown of the UK-Portugal Double Taxation Treaty and our deep dive on SIPP vs QROPS for Portugal expats.

Matthew Renier is a Chartered Financial Adviser at Arthur Browns Wealth Management, based in the Algarve. He specialises in cross-border pension and tax planning for UK expats living in Portugal.

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