The Dalian Taxation Bureau of the State Administration of Taxation (SAT) was officially merged by the former Dalian State Taxation Bureau and Dalian Local Taxation Bureau in 2018. As the Internet sets off a wave in the country, riding the east wind of the national tax collection and management informationization reform, Dalian tax actively take steps, from the beginning of the Dalian tax management system in 1996, to the CTAIS system, data centralization, the Golden Tax III, Dalian tax constantly exploring began to constantly introduce more enterprise-friendly and beneficial to the people of information technology service methods.

In 2019, Dalian Tax completed the electronic informatization levy management service mode of "convenient tax handling, intelligent tax inquiry, and data tax management". The city's 248 tax-related businesses can now realize full online processing, and more than 95% of taxpayers handle declaration and tax payment matters through the electronic tax bureau. At the same time, Dalian tax also conforms to the demand of the reform of the levy management system, integrates the former state tax and local tax information system, completes the task of the Golden Three and the Treasury, and fully realizes the information and data interaction***sharing and the difference of the information against the same time, and at the same time, provides a platform for the protection of the big data tax analysis. Now, Dalian tax has fully entered the "three-minute tax era".