The 12-monthEuribor on 21 August 2026 exceeded the 3.0 per cent mark in its daily rate for the first time since September 2024. The provisional August monthly average stands at 2.939 per cent. For households in Spain with variable-rate home loans, upcoming interest rate adjustments will therefore make repayments more expensive; many variable-rate mortgages are linked to the monthly average.
Examples illustrate the scale of the increase: if the month were to end at today’s level, a mortgage of €300,000 with 25 years remaining and a margin of one percentage point above Euribor would cost just over €133 more per month, or around €1,600 a year. For €150,000, the increase would be about €66 a month or €794 a year. The actual effects depend on the terms of each individual contract – for example, the timing and frequency of rate revisions (every six months or annually), the remaining term and the agreed margin.
Euribor reflects rates in the unsecured interbank money market and is sensitive to changing expectations about monetary policy. Market participants attribute the recent rise to persistent inflation risks in the eurozone and higher yields. As long as the Europäische Zentralbank (ECB) keeps interest rates high or does not rule out further moves, expected money-market rates are likely to remain elevated, supporting Euribor. Forecasts for its future path remain uncertain and depend on inflation trends and new signals from the ECB.
For borrowers, the key factor is the review date set out in the contract: loans reset in the coming weeks using the August monthly average are likely to reflect the increase immediately. Contracts with longer adjustment intervals or partially fixed rates will respond later or less strongly. In such periods, banks often point to options such as adjusting the repayment schedule, making overpayments or switching to fixed-rate products; whether and to what extent this makes sense depends on the individual borrower’s circumstances.
The final monthly Euribor figure will not be known until the end of the month and may fluctuate before then. It is calculated and published by the European Money Markets Institute . In Spain, variable-rate mortgages are mostly linked to the 12-month benchmark rate plus a contractual margin, so movements in the index feed through to households directly, but with a time lag.
Editor: Daniel Mayer (Article created with AI assistance).