The Economic Survey of the Professional and Business Services Sector operation (SPE) gives us information on the economic structure of the different sub-sectors of the Professional and Business Services of the Basque Country and of each province; it contributes to the production of the Economic Accounts, Input - Output Tables, and allows the calculation of the sector macro-figures. The information is provided by the establishments whose exclusive or main activity belongs to Professional and Business Services, according to the National Classification of Economic Activities.