"12366 tax service hotline" is a special telephone number for the national tax authorities that State Taxation Administration of The People's Republic of China applied to the Ministry of Information Industry for approval in 20001year to meet the needs of strengthening and improving tax service. It has a unified call center code, that is, the IRS is 12366- 1, and the local taxation bureau is 12366-2. It combines manual and automatic voice, providing multifunctional and high-quality voice service all day.

The main service functions of "12366 tax service hotline" include: tax consultation service, which mainly provides taxpayers with tax laws, regulations and policies, tax collection and management regulations, tax-related information and other consulting services; The tax guide service mainly provides consulting services for taxpayers to handle tax registration, invoice purchase, tax declaration and other tax-related matters; The tax-related reporting service mainly provides services for taxpayers to report tax violations; The complaint supervision service is mainly aimed at taxpayers' morality, service quality and tax officials of tax authorities.