1. First of all, we should know the tax rate that can be applied for training exchange, determine the tax rate, and avoid paying wrong taxes and fees.

2. Secondly, it is necessary to prepare training-related materials, types of training services, fees, charging time, etc. , and determine the header and content of the invoice, so that the next invoice can be made.

3. Finally, according to the training fee, prepare the corresponding invoice content, issue the training invoice according to the actual tax paid through the invoice printing software, and sign the back of the invoice to ensure that the invoice is legal and effective.