You can only apply for inquiry in the system used internally by the tax department. Entering the taxpayer's name will bring out the corresponding taxpayer identification number and other related information. Of course, the tax authorities will not give you any inquiries at will, which involves the commercial secrets of taxpayers.

Taxpayer identification number, usually referred to as "tax number". The taxpayer identification number is the number on the tax registration certificate, and the identification number of each enterprise is unique. 20 15 65438+ 10/2 according to the revised draft of People's Republic of China (PRC) tax collection and management law (draft for comment) published by State Taxation Administration of The People's Republic of China, People's Republic of China (PRC) this week, every citizen in the future may have a unique and lifelong digital code identification compiled by the tax authorities to confirm his identity.