• Data reference period
• Geographic localization (Portugal)

• ECONOMIC TERRITORY:  Territory that consists on: (a) the geographic territory administered by a government within which persons, goods, services and capital move freely; (b) any free zones, including bonded warehouses and factories under customs control; (c) the national air-space, territorial waters and the continental shelf lying in international waters, over which the country enjoys exclusive rights; (d) territorial enclaves (i.e. geographic territories situated in the rest of the world and used, under international treaties or agreements between States, by general government agencies of the country (embassies, consulates, military bases, scientific bases, etc.); (e) deposits of oil, natural gas, etc., in international waters outside the continental shelf of the country, worked by units resident in the territory as defined in the preceding subparagraphs.
• REGIONAL AND LOCAL GOVERNMENT EXCLUDING SOCIAL SECURITY FUNDS:  Subsector of general government which consists of those types of public administration which are separate institutional units exercising some of the functions of government at an (autonomous) regional level or those types of public administration whose competence extends to only a local part of the economic territory, apart fromthe regional or local agencies of social security funds.
• REFERENCE PERIOD:  Period to which the information refers and which may be a specific day or a time interval (month, fiscal year, calendar year, among others).
• GOVERNMENT:  The government sector includes all institutional units whose primary function is to produce other, non-market goods and services for individual and collective consumption and/or engaging in the redistribution of income and national wealth. These units' main resources come from mandatory payments made directly or indirectly by units belonging to other sectors.

(Regional and local government tax revenues/ General government taxes revenues)*100