Generally speaking, before your company starts to operate, that is, when you register the tax certificate, the relevant administrator or relevant personnel of the tax bureau will go to your company's location in person and then have an interview. General interviewees include: corporate legal persons, financial personnel, sales personnel, management personnel, etc. (Other specific personnel need to be interviewed according to local actual conditions). Then the tax bureau will set an approximate sales amount for your company on the spot according to the interview and some specific conditions of your company. If your company can't reach the sales volume every month, then tax it according to the sales volume. If it exceeds the sales amount stipulated by the tax bureau, it will be taxed according to the actual sales amount of your company in that month.

The above tax calculation methods are mainly used for the regular quota collection formulated by some smaller units and enterprises.