By Priya Nair-Santos · Finance
Most holiday-home buyers think in one currency. They see a €680,000 villa in the Algarve, convert it to pounds at the day's exchange rate, notice it is about £580,000, and begin calculating whether the rental income covers the mortgage. What they are not thinking about is that the return on that property will eventually be realized in a currency that does not yet exist — the future pound-to-euro rate on the day they either sell, or when they add up what their rental income actually delivered in sterling terms across eight years of ownership.
Currency risk in cross-border property is structural. It does not go away with good due diligence. It requires active management or explicit acceptance as a cost of the strategy.
The Three-Currency Problem
A typical international holiday-home purchase involves three distinct currency exposures:
- Purchase currency: the currency in which the property is denominated and purchased (euros, for an Algarve villa)
- Rental income currency: the currency in which short-term rental income is generated (typically also euros, but sometimes US dollars for luxury resorts pricing in USD)
- Home currency: the currency in which the owner ultimately measures wealth and will consume the proceeds (sterling, for a UK buyer)
If EUR/GBP moves against the buyer between purchase and sale, the euro-denominated capital gain may be partially or fully offset in sterling terms. If the rental income is earned in euros but the owner's mortgage is in sterling, an adverse currency move increases the effective cost of the carry. These two effects compound.
A Worked Example: UK Buyer, Algarve Villa, 2018–2026
Consider a UK buyer who purchased an Algarve villa in January 2018 for €680,000, when EUR/GBP was 0.884, meaning the sterling equivalent was approximately £601,000.
By mid-2026, the villa has appreciated to €900,000 — a 32% capital gain in euro terms. The buyer also received net rental income (after Portuguese tax, management fees, and maintenance) of approximately €8,200 per year for seven years: €57,400 total in rental net income. Total euro return: €277,400, or about 40.8% on the original euro purchase price.
Now convert that return into sterling. In mid-2026, EUR/GBP has moved to 0.835 — sterling has strengthened against the euro from 0.884 at purchase. Converting the €900,000 sale proceeds at 0.835 gives £751,500. Against the original sterling outlay of £601,000, the capital gain in sterling is £150,500 — approximately 25%. The rental income of €57,400, if repatriated annually over the period at average exchange rates, converts to approximately £47,850.
Total sterling return: approximately £198,350 on a £601,000 outlay — a 33% return. The euro return was 40.8%. Currency movement subtracted 7.8 percentage points, or roughly 19% of the total euro-denominated gain.
Now consider a buyer who purchased the same property in June 2016 — two weeks before the Brexit referendum — when EUR/GBP was 0.762. Their £601,000 target was achieved at €788,000, rather than €680,000 — they had to pay €108,000 more to acquire the same property. The Brexit vote drove sterling down to 0.884 within weeks. Their cost basis in sterling terms immediately increased by 16% without any change in the property's euro value.
The Quiet Erosion of Rental Yields
Currency effects on rental income are often more insidious than on capital, because they accumulate invisibly year by year. A UK owner receiving €12,000 per year in net Algarve rental income repatriates it to the UK either directly (via a bank transfer subject to the spot rate) or implicitly (by treating it as a euro-denominated offset against euro costs).
If EUR/GBP moves from 0.884 to 0.835 over eight years, that annual €12,000 is worth £10,620 at the old rate but £10,020 at the new rate — a difference of £600 per year. Over eight years that is £4,800 of lost sterling value from the rental stream alone, with zero change in the euro cash flows.
At scale — for owners with multiple properties or properties valued above €1.5 million generating €40,000–€80,000 of annual net income — the currency drag on the rental stream alone can represent £4,000–£15,000 of annual erosion.
Practical Hedges
Complete elimination of currency risk on a holiday home is not practical or cost-effective, but several tools can substantially reduce exposure:
Forward contracts. A currency specialist (Wise, OFX, Moneycorp, TorFX) can lock in an exchange rate up to 24 months in advance for the purchase or sale of a property. For a buyer with a known completion date, a forward contract eliminates the completion-date exchange risk entirely. The cost is embedded in the rate, typically 0.3–0.8% against the spot rate depending on term and liquidity of the currency pair. For a €680,000 purchase, a forward contract saving 1.5% against an adverse rate move is worth over £10,000.
Multi-currency accounts. Holding rental income in euros (in a euro-denominated account) rather than immediately repatriating provides optionality to convert at advantageous moments rather than at a fixed monthly rate. This is not hedging — it is rate timing, which is speculation — but it avoids the systematic disadvantage of monthly auto-conversions at whatever the spot rate happens to be.
Euro-denominated mortgage. For UK buyers purchasing in eurozone countries, a euro mortgage from a Portuguese or Spanish bank means the monthly carry is in euros, denominated against euro rental income. The currency mismatch between income and mortgage is eliminated. The downside: euro mortgages for non-resident buyers typically require a 30–40% deposit and carry higher arrangement fees than UK mortgages released against European property.
Staggered resale conversion. When selling, converting the euro proceeds to sterling in tranches over 6–12 months reduces the impact of a poor exchange rate on a single day. This requires patience and a clear account structure (typically a euro account at a currency specialist) but is effective at averaging out short-term volatility.
What This Means for the Return You Quoted Your Spouse
The practical implication is this: the projected gross yield you used to justify the purchase — 5.8% in Algarve, let's say — is denominated in euros. Your sterling return will be higher or lower depending on a variable you cannot control. Before buying, ask your IFA or accountant to model the property return at three EUR/GBP scenarios: current rate, plus 10%, minus 10%. The range of outcomes will clarify whether the investment makes sense across a plausible set of currency futures, or only in one favourable scenario.
Currency movement is not a risk that shows up on the estate agent's brochure. It shows up on the bank statement eight years later, as the gap between what you thought you made and what you actually took home.