

1994 tax reform divided taxes into 3 types: central (such as customs), local (such as business taxes), and shared taxes (such as VAT). Two systems — national tax and local tax authorities, separated from local finance department, and provincial level and below tax authorities are vertically managed. This is to decrease local government influence over tax collection and ensure central government gets their share, but the con is also very obvious — two sets of personnel is very expensive. So in 2018, this was merged together again.

It was very difficult to convince provinces to go along with reform. Premier Zhu had to go personally. This is difficult to understand for the youth of today, but that's because the central government was a lot weaker in those days. Also, the provinces would try to play with the numbers each time a reform was put in.
Business taxes are the second largest category and accounted for 23% of revenue in 2018. Before reforms of 2002, local enterprises paid taxes to local governments, central enterprises to central. This led to a lot of protectionism in the provinces. After 2002 this was changed to 60/40 in favor of central (except for central SOEs who still pay to central).
Nowadays, central govt has about 55% share of total national budget (up from 22%), and as % of GDP it is about 20% (vs 11% before).