Property investment with high inflation and Euribor: strategy and risk

Between 2022 and 2024, Spanish property investors went through the steepest interest-rate cycle in 15 years: the Euribor (the euro interbank rate to which most Spanish variable-rate mortgages are linked) went from negative levels to above 4%, mortgage rates rose drastically and, at the same time, accelerating inflation eroded tenants' purchasing power, limiting how far rents could rise in real terms. In 2026, with the Euribor easing but still above 2% and inflation under control but not at the lows of 2010-2019, investors have to navigate a different environment from the last decade of zero rates.

This guide explains how that macroeconomic environment specifically affects property investment and which strategic decisions make most sense in this context.

Inflation and property: the effect most people know and the one they forget

The well-known effect: property is a real asset that tends to hold its value in inflationary environments. Purchase prices rise with inflation over the long term, and rents are also updated in line with the IPC (Spain's consumer price index) or, in zonas tensionadas (areas officially declared stressed housing markets), the reference index. That makes property a partial hedge against inflation.

The effect people forget: inflation also pushes up the running costs of a property investment. Renovation materials go up, labour goes up, community fees go up, the IBI (Impuesto de Bienes Inmuebles, the local property tax) goes up. If rents are capped by law (zonas tensionadas) and can't rise as fast as costs, the property's net margin is squeezed. This particularly affects assets in zonas tensionadas, where the Ley de Vivienda (Spain's Housing Act) limits rent increases.

A high Euribor and its impact on leveraged investment

For investors who buy with a mortgage (the vast majority), the level of the Euribor is the biggest single factor in the cost of capital. In 2026, with the Euribor at around 2.5%, a variable-rate investment mortgage may be at Euribor + 1.5-2.5% = 4-5% effective. Compared with the Euribor of -0.5% in 2020-2021 (which meant mortgages at 1-2% effective), the cost of debt has more than doubled.

That has a direct impact on cash flow: for the same asset, the same price and the same rent, the monthly mortgage payment in 2026 is significantly higher than in 2020. What used to be a cash-flow-positive asset with a mortgage may now be cash-flow-neutral or even negative if the gap between rent and repayment is small.

The practical implication for choosing assets: in the 2026 environment, with the Euribor at 2.5%, only assets with gross yields above 7-8% generate positive cash flow after servicing the mortgage. Assets yielding 4-5% that were cash-flow-positive with mortgages at 1.5% may now be cash-flow-negative. That pushes investors towards cheaper, higher-yielding markets and away from the big cities, where prices have already risen a lot.

Fixed or variable mortgage in the current environment: the decision with the biggest impact

In 2026, with expectations that the Euribor will ease gradually, the choice between a fixed and a variable mortgage reads differently from 2022 (when the Euribor was starting to rise and a fixed rate was clearly preferable):

• Fixed-rate mortgage: Fixed rates for investors in 2026 are between 3.5% and 4.5%, depending on the bank and the profile. They give total certainty about the cost of financing for the whole life of the loan. If the Euribor keeps falling towards 1-1.5% in the coming years (as many analysts project), the fixed rate ends up more expensive than the variable. But it protects you against the risk of future rises.
• Variable-rate mortgage: With the Euribor at 2.5% plus a margin of 1.5-2%, the current effective rate is between 4% and 4.5%, but it is expected to fall if the European Central Bank (ECB) keeps cutting rates. For investors who can tolerate interest-rate risk and have a horizon of several years, a variable rate may work out cheaper in the long run if rates keep falling.
• Mixed-rate mortgage: An initial fixed-rate period (5-10 years) followed by a variable rate. It lets you take advantage of today's stability without committing permanently if rates fall later.

The investment strategies that work best in this environment

• Buying in cash or with minimal leverage in high-yield assets: This removes interest-rate risk and lets you capture yields of 8-12% without handing part of them over to debt service. It requires more of your own capital, but net cash flow is maximised.
• Assets in low-price markets with high gross yields (secondary markets): Low prices mean a smaller mortgage, a lower repayment and more positive cash flow, even with a high Euribor. Markets in cities such as Córdoba, Salamanca, Murcia, Albacete or Badajoz make more sense with the Euribor at 2.5% than Madrid or Barcelona do.
• Buying bank-owned and auction properties at a 20-30% discount: A discount on the purchase price directly improves the rental yield and reduces the amount you need to borrow. With a high Euribor, the purchase price is the factor the investor can control most directly.
• Letting by the room in university markets: The 10-15% yields of university markets absorb the higher cost of the mortgage with a wider margin than standard residential letting.

Rent reviews under the new rules: what you need to know

Since the Ley de Vivienda was passed in 2023, rent reviews in tenancy agreements are no longer automatically linked to the IPC. In areas that are not zonas tensionadas, the annual review cap was set at 3% for 2024, and in 2025-2026 the new Índice de Referencia de Actualización de Arrendamientos (the rent review reference index) published by the INE (Instituto Nacional de Estadística, Spain's national statistics office) applies; it is usually more moderate than the IPC. In zonas tensionadas, the limits are even stricter. Investors should check the index that applies to each specific contract before giving notice of the annual review.

Related resources: For the comparison between fixed and variable mortgages with an analysis specific to investors (different from that for your own home), the article on fixed vs variable mortgages for investors has the detailed analysis. To choose assets whose yields can bear the cost of a high Euribor, the guide to cash flow in property investment sets out the selection method. For heavily discounted assets that offset the cost of debt, the guide to court auctions and the guide to bank-owned property are the best places to start.