The euribor closed August 2026 around 2.95%, above the 2.855% recorded in July, thus reaching its highest level since September 2024. The index to which a good part of variable mortgages in Spain are referenced chains its second consecutive month of increases after the slight decrease recorded in June.
The increase has consequences for households that must soon review their loan. In August 2025, the euribor was at 2.114%, more than eight tenths below the current level. The difference is also considerable compared to February 2026, when the monthly reference was at 2.221%.
For a mortgage of 150,000 euros for 25 years with a differential of one percentage point over the euribor, Roams calculates that an annual review would mean paying around 65 euros more per month, about 780 euros additional per year. In a semi-annual update, the estimated increase by the comparator is around 58 euros monthly.
Why not all mortgages will rise the same
These amounts are indicative and cannot be directly transferred to all variable loans. The effect of the rise in the euribor depends on the capital that remains to be amortized, the remaining term, the differential contracted with the financial entity, and the frequency established to review the interest rate.
Mortgages usually use the French amortization system. With this method, during the first years of the loan, a larger part of the installment corresponds to interest, while the weight of the capital repayment gradually increases.
A mortgagor who wants to reduce their exposure to future variations in the euribor can also consider changing the loan conditions, either through a modification with their own entity or transferring the mortgage to another bank. The operation and its possible costs will depend on each contract and the procedure used.
The euribor has gone from 2.221% in February to nearly 3% in August
The evolution of 2026 shows a clear change compared to the levels reached at the beginning of the year. The euribor was at 2.221% in February and subsequently advanced to 2.565% in March. In July it reached 2.855% and August has raised the reference again to approximately 2.95%.
The monthly advance has also been accompanied by days in which the daily indicator has exceeded the 3% barrier. On August 21, it reached 3.003%, a reference it touched again at the end of the month.
The daily evolution does not directly determine the quota of a mortgage. For the revisions, the corresponding monthly reference provided in the contract is used, so the differences compared to the same month of the previous year or compared to six months earlier are particularly relevant for those updating their loan.
Inflation increases pressure on the ECB again
The evolution of the euribor coincides with a new rise in inflation and with the market's attention on the upcoming moves of the European Central Bank (ECB). The institution raised its three official interest rates by 25 basis points in June, placing the deposit facility at 2.25%, the main refinancing operations at 2.40%, and the marginal lending facility at 2.65%.
In July, however, the ECB Governing Council decided to keep those three official rates unchanged. The institution continues to condition its decisions on the evolution of data and inflation expectations, without previously committing to a specific trajectory for the rates.
The context has become complicated with the latest price data in Spain. The leading indicator from the INE places the annual inflation at 4.3% in August, seven tenths above the 3.6% of July. Core inflation, which excludes unprocessed foods and energy products, decreases by one tenth and stands at 2.9%.
Fuels drive the CPI in August
The INE points out among the factors explaining the rise in inflation the fuels and lubricants for personal vehicles, whose prices increased in August while in the same month of 2025 they had decreased. Also influencing, although to a lesser extent, were food and non-alcoholic beverages, which fell less than a year earlier.
The evolution of energy prices is especially relevant for expectations about interest rates. A persistent increase in energy prices can be transferred to production and transportation costs and hinder the return of inflation towards the ECB's 2% target.
This scenario helps to explain why markets closely monitor each new signal of monetary policy. The euribor reflects expectations about interest rates and can anticipate movements before the European Central Bank formally adopts its decisions.
The 3% becomes a reference for the euribor again
Laura Martínez, spokesperson for the mortgage broker iAhorro, believes that the recent behavior of the indicator precisely reflects those expectations. "The euribor is anticipating a tightening of the cost of money by the ECB. The market moves faster than central banks, which have not yet confirmed whether there will be new interest rate hikes," she points out.
Pablo Vega, finance expert at Roams, also points to the importance of the signals that the ECB may convey about its next steps. In his opinion, the market will not only be attentive to the next decision on rates but also to the expectations generated about subsequent meetings.
August thus ends with the euribor again very close to 3% and clearly above the levels of a year ago. For households with variable mortgages that have to update their loan now, that difference will translate into higher payments, although the specific impact will depend on the conditions of each loan.