The tax agency code is the unique identification code that identifies all tax agencies in China, including the codes of tax authorities at all levels, their internal organs and dispatched offices. The code is widely used in all kinds of tax collection and management business and core collection and management decision-making administrative management systems.

The tax agency code adopts hierarchical coding method, and * * * is divided into six layers, which is represented by 1 1 digit. The number 1 floor 1 indicates the category of tax institutions (0- People's Republic of China (PRC) State Taxation Bureau, 1- tax institutions at or below the provincial level), and then every two digits are 1 floor, indicating provinces, cities, counties, towns and stocks respectively.