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Remuneration and other benefits paid to the Bank’s directors and senior managers - Schedule of direct risk exposure to bank's directors and the guarantees provided (Details) - EUR (€) € in Thousands | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | --- | ---
Loans and credits |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | € 321,234,000 | € 302,861,000 | € 279,589,000
Guarantees |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 17,449,000 | 16,901,000 | € 15,435,000
Directors |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 140 | 143 |
Directors | Loans and credits |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 140 | 143 |
Directors | Guarantees |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Ana Botín |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 3 | 0 |
Directors | Ana Botín | Loans and credits |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 3 | 0 |
Directors | Ana Botín | Guarantees |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Héctor Grisi |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Héctor Grisi | Loans and credits |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Héctor Grisi | Guarantees |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | José Antonio Álvarez |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | José Antonio Álvarez | Loans and credits |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | José Antonio Álvarez | Guarantees |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Glenn Hutchins |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Glenn Hutchins | Loans and credits |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Glenn Hutchins | Guarantees |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Antonio Weiss |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Antonio Weiss | Loans and credits |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Antonio Weiss | Guarantees |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Belén Romana |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Belén Romana | Loans and credits |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Belén Romana | Guarantees |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Bruce Carnegie Brown |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Bruce Carnegie Brown | Loans and credits |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Bruce Carnegie Brown | Guarantees |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Germán de la Fuente |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Germán de la Fuente | Loans and credits |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Germán de la Fuente | Guarantees |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Gina Díez |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 5 |
Directors | Gina Díez | Loans and credits |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 5 |
Directors | Gina Díez | Guarantees |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Henrique de Castro |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Henrique de Castro | Loans and credits |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Henrique de Castro | Guarantees |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Homaira Akbari |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Homaira Akbari | Loans and credits |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Homaira Akbari | Guarantees |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Javier Botín |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Javier Botín | Loans and credits |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Javier Botín | Guarantees |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Carlos Barrabés |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 137 | 138 |
Directors | Carlos Barrabés | Loans and credits |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 137 | 138 |
Directors | Carlos Barrabés | Guarantees |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Luis Isasi |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Luis Isasi | Loans and credits |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Luis Isasi | Guarantees |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Pamela Walkden |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Pamela Walkden | Loans and credits |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Pamela Walkden | Guarantees |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Ramiro Mato |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Ramiro Mato | Loans and credits |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Ramiro Mato | Guarantees |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Sol Daurella |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Sol Daurella | Loans and credits |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | 0 | 0 |
Directors | Sol Daurella | Guarantees |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Exposure to credit risk on loan and credits and guarantees | € 0 | € 0 |

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