What Investment Return is Required to Make a Mortgage Versus Cash Purchase Worthwhile
Spanish mortgage vs cash purchase. Fixed rates in Spain can still be obtained at sub 4%. Fixed rates for the full term currently range from 2.95% to just over 4%, with 3.5% being the average level. This can be dependent on the linked products a borrower is prepared to contract.
A Spanish mortgage at a fixed rate under 4% becomes cost effective as long as your invested capital earns more than about 4.5% a year before tax. That is the figure to compare against your own portfolio. For many investors with substantial capital they will already target or exceed this level.
The break-even is simply the loan rate divided by one minus your tax rate. At a 23% tax rate on investment income, it looks like this:
Fixed mortgage rate Pre tax return needed to break even
3.00% 3.90%
3.50% 4.55%
3.75% 4.87%
4.00% 5.19%
- Taking a mortgage may suit buyers whose capital is already working. If your money is earning above the break-even in a diversified portfolio, a business or other investments, borrowing lets you keep it there instead of tying up €500k to €1m+ in one property.
- Obtaining a Mortgage in Spain helps you keep liquidity. A mortgage leaves you a cash reserve for other opportunities or emergencies.
- Data suggests most buyers at this level still pay cash. Agents report about 70% of foreign luxury purchases complete without a mortgage, so a well-structured loan is a real differentiator.
- Non-residents can usually borrow up to 70% of value, so whilst a Spanish Mortgage keeps capital in tact a meaningful deposit is always needed. Buyers in Spain will normally need a 30% deposit plus a further 12% or so for costs of purchase.
The sections below cover the market, current rates, a worked example and the risks. This is general information, not financial advice.
The Market For €500k to €1m+ Homes
Overseas demand is softer overall in 2026, but the top end is led by foreign buyers buying a second home. No public source we found publishes exact sales for the €500k to €1m band itself, so the figures below describe the wider market and the luxury end on either side of it.
- Non-resident purchases are small and shrinking. Non-resident foreigners bought 22,610 homes in the first half of 2026, about 6% of the total 353,557 home sales, according to the Ministry of Housing figures reported by Brains RE.
- Foreign buyers in the luxury end of the market from a high percentage of all sales. Agency Walter Haus puts foreign buyers at about 30% of luxury transactions, with typical foreign budgets of €2m to €5m and deals above that increasingly common.
- Many buyers of luxury property buy with cash. The same agency says seven in ten of those foreign purchases complete without a mortgage. It does not describe its sample, so treat it as an agency view, not an official statistic.
- Typical mortgage size is far lower. Spain’s average new home mortgage in July 2026 was €180,785, up 10.9% on a year earlier, with 62.3% of new mortgages at a fixed rate (INE).
The gap between a €180k average loan and a €350k to €700k loan on a €1m home is why this segment needs specialist underwriting. Banks assess these cases individually, and a non-resident usually needs a deposit of at least 30%.
Fixed Rates Versus Keeping Capital Invested
Borrowing only pays if what you earn on the money you keep beats what the loan costs, after tax. Rates have risen in 2026, so that bar is higher than it was a year ago.
Benchmark Latest figure Date Source
12-month Euribor 3.239% 2 Nov 2026 Bank of Spain
ECB deposit rate 2.50% 16 Sep 2026 MTS Insights
Fixed rates Spain Average 3.5% 2 Nov 2026 IMS Spain
Gross rent yield 6.5% Q2 2026 Idealista via Infobae
Cash on deposit within the EU does not beat a sub-4% loan. With the ECB deposit rate at 2.50%, savings earn less than the 3.03% average new fixed rate, and interest is taxed.
Equities have the best long-run record, but no guarantee. UBS’s Global Investment Returns Yearbook finds equities beat bonds, bills and inflation in all 21 markets with data since 1900 (UBS). The page gives no global annual figure, so this article does not assume one. Returns also vary widely by decade and by the year you start.
Rental yield is gross, not net. A 6.5% national gross yield falls after tax, void periods, community fees and maintenance, and it relates to the property bought, not to the cash you keep.
A sub-4% figure in the title is a plausible range, not a guaranteed offer. Your rate depends on the bank, the loan-to-value and your profile.
Worked Example: €800,000 Home, €480,000 Loan
On these assumptions, borrowing breaks even at a 4.55% pre-tax return, adds about €1,700 a year at 5% and about €9,100 a year at 7%. It only costs you if the money sits in low-yield cash. The assumptions are illustrative, not an offer or a forecast.
Assumptions
- Purchase price €800,000; loan €480,000 (60% loan-to-value); the buyer holds at least €480,000 more in liquid capital.
- Fixed rate 3.5% for 20 years, repayment mortgage, interest not tax-deductible.
- Tax on investment income and gains taken as a flat 23% (the €50,000 to €200,000 savings band). Larger portfolios fall into higher bands, which weakens the case for borrowing.
- Fees, currency effects and the buyer’s own tax position are ignored.
Result
The loan costs about €16,800 in interest in year one (3.5% of €480,000). The monthly repayment is about €2,784, or €33,400 a year, and total interest over 20 years is about €188,000. The table compares that year-one interest with what the €480,000 earns if kept invested.
Return After 23% tax Earned Less loan interest Net gain from borrowing
4.55% 3.50% 16,800 Breakeven
5.00% 3.85% 18,480 +1,680
7.00% 5.39% 25,872 +9,072
What do These Figures Mean For a Non-Resident Considering a Mortgage in Spain
The break-even is a pre-tax return of about 4.55% a year, every year, for 20 years. A diversified portfolio has historically beaten that over long periods but not in every year. A 20% fall in the first year would reduce the €480,000 by €96,000 while the €2,784 monthly payment continues unchanged.
Risks and What The Comparison Leaves Out
The numbers favour borrowing only in narrow conditions, so weigh these before deciding.
- Return risk. The loan payment is certain; investment returns are not. A weak first few years can do lasting damage when you are also paying the mortgage.
- Liquidity. Capital kept invested is only an advantage if you can sell it without a loss when you need it, and you may have to sell at the worst time.
- Currency. A euro loan against sterling, dollar or other income adds exchange-rate risk to every payment.
- Rates after the fixed period. If you choose a mixed or variable loan, Euribor has moved from about 2.2% to around 3.3% during 2026, so payments can change quickly.
- Tax. Rates differ by residency and by country of the investment. The 23% used above is a simplification, so take advice from a tax adviser.
- Spanish mortgage costs not modelled. Arrangement fees, valuation, notary and registry costs, and early-repayment charges all reduce the benefit.
- Lending limits. Non-residents are typically limited to around 60% to 70% loan-to-value, and each bank decides case by case.
This article is general information, not financial, tax or investment advice.
Talk to IMS Mortgages Spain
IMS Mortgages Spain has been arranging Spanish mortgages for non-residents since 2002. We will obtain an underwritten approval and a realistic rate for your own circumstances, so you can run this comparison with real figures.
There is no upfront advice fee. Nor any cost or obligation for getting the risk approved specific terms and conditions. All applications are submitted and managed by Ravena Rhys Jones under Bank of Spain registration number D134. A broker fee applies only once you have an underwritten approval you are happy with, and you elect to move forward to valuation of a specific property.