Law 26/1988 , 29 July on discipline of and intervention in credit institutions. (modified by the Law 5/2005, 22 of april by the law 41/2007, 7 of december and by the Royal Decree 10/2012, 23 of march).

RD 1398/1993, de 4 de agosto, por el que se aprueba el Reglamento del procedimiento para el ejercicio de la potestad sancionadora.

RD 2119/1993, 3 December on sanctioning procedures applicable to persons acting in the financial markets.