Spain's antitrust watchdog opens probe into six listed banks over mortgage-rate signalling

Spain's competition authority, the CNMC, opened a formal investigation on 16 June into all six of the country's listed banks over concerns that public remarks by senior managers about future fixed-rate mortgage rates may have amounted to an illegal exchange of commercial intentions.

What the regulator is examining

In a statement, the CNMC said it was looking at "the making, by some of their executives, of public statements about the banks' future commercial policy, particularly in relation to fixed-rate mortgage interest rates." The regulator believes those disclosures "would have allowed entities in the sector to anticipate the future behaviour of their competitors," potentially breaching Article 1 of Spain's Competition Defence Act and Article 101 of the Treaty on the Functioning of the European Union. The case, designated S/0009/26, has a maximum instruction period of 24 months and the CNMC stressed that the opening does not prejudge the final outcome.

The banks' response

Alejandra Kindelán, president of the Spanish Banking Association (AEB), defended the sector the same day, saying lenders comply scrupulously with the law and describing Spain as having "the most competitive mortgage market in Europe." She pointed to the average mortgage rate of 2.81% in April versus a eurozone average of 3.44%, calling it a clear advantage for consumers. None of the six individual banks offered comment.

The banks comply with the law, and especially in competition matters. We have the most competitive mortgage market in Europe.

Consumer-side reaction

The financial users' association Asufin welcomed the probe. Its president, Patricia Suárez, noted that consumers had for years watched the main entities adopt nearly identical strategies on interest rates, fees and savings remuneration. She said the investigation was overdue.

It is good news that the CNMC has decided to examine in depth practices whose consequences consumers have been suffering for years. When banks act in an almost identical way, citizens end up paying more to finance themselves and receiving less for their savings.

The rate landscape

Against a backdrop of fierce mortgage competition that some bankers have labelled "irrational," fixed-rate deals in June 2026 ranged between 3.99% and 4.85% among five of the six lenders, according to property portal Idealista. The CNMC's intervention lands just as Cani Fernández enters her final week as the regulator's president, with the government yet to name her successor. Consumer groups and trade unions may apply to be recognised as interested parties in the proceedings under Spain's Administrative Procedure Act.