The figure recorded in September (3.194 per cent) is 3.2 basis points higher than the 3.162% recorded in August and is the highest since September 2025, when it stood at 3.228%.

For contracts signed in the last three months, the interest rate rose from 2.910% in August to 2.959% in September.

For ‘purchase of a home’ alone – the most significant category of mortgage lending – the interest rate for all contracts rose to 3.177% (up 2.9 points on August) and, for contracts signed in the last three months, it increased by 4.8 basis points to 2.945%.

In September, the average monthly instalment for all contracts stood at €423, five euros more than in August and €30 higher than in the same month last year.

In September, the proportion of the instalment allocated to interest once again accounted for more than half of the monthly instalment, a situation not seen since August 2025: of the €423 instalment, €213 (50.4%) corresponded to interest payments and €210 (49.6%) to principal repayment.

As for contracts signed in the last three months, the average instalment rose by €13 to €757 (an increase of 13.7% compared with the same month last year).

In September, the average outstanding principal for all mortgage loans increased by €655 compared with the previous month, to €80,843.

For contracts signed in the last three months, the average outstanding principal was €187,246, €1,434 more than in August.

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