The European System of Accounts does not include the production of the tourism sector as such. The need to typify the tourist industry and evaluate its contribution to overall economic activity justifies the statistical operation known as the Tourism satellite account. In it, tourism is analysed as an economic phenomenon from the viewpoint of both Supply and Demand, the main macro-figures of the sector are produced for the Basque Country, and the evolution of its weight in relation to Gross Domestic Product at market prices is calculated.