The tax bureau usually assesses your income according to the break-even method, that is, it does not consider whether to make money at first, but how much rent, water and electricity charges, staff salaries and other expenses you need every month in the course of operation. If you don't make money, how much operating income you need to spend all the expenses, then they will approve an operating income for you on this basis, and pay business tax and other additional taxes according to this income. If the invoice is not enough, and you buy another invoice, you will be charged 5% business tax, 2-3% income tax (usually 2%), 7% urban maintenance and construction tax of business tax and 3% education surcharge of business tax according to the face value of the invoice. In this way, for every invoice with a face value of 11,111 yuan, you will have to pay at least 7.8% of various taxes including business tax, that is, 781 yuan.