Business-to-business transfer is a transfer method between enterprises, which is used to pay for goods, services and projects. In business-to-business transfer, choosing advance payment as the purpose of transfer means paying part of the money to the other company in advance to obtain the right to purchase goods or services in advance. If it is an advance payment, the specific payment amount and time should be agreed with the other company, and the purpose of the advance payment should be indicated when transferring money.