How many reasonable and legal invoices should be issued for technical consulting fees?

The tax rate of technical consultation fee is 6%, which is a reasonable and legal invoice. According to relevant public information: technical consulting fee. Technical consulting fees incurred by accounting companies can be included in management fees. This course accounts for the management expenses incurred by enterprises in organizing and managing the production and operation of enterprises, including the start-up expenses incurred by enterprises during the preparation period and the start-up expenses incurred by the board of directors and administrative departments.