Let's see what expenses you incurred first. Generally, if you purchase goods, you should obtain special invoices for value-added tax, general invoices for value-added tax, special invoices for commercial enterprises, special invoices for industrial enterprises, special invoices for bazaars, etc. If you pay for meals, you should obtain special invoices for quota invoice, service industry, entertainment industry, culture and sports, etc. In addition, there are many types of invoices, such as organic tickets, handwritten promissory notes, hand-torn fixed tickets and self-printed invoices. For example, special invoices for value-added tax, commercial retail, commercial wholesale, industrial wholesale, special invoices for transportation industry, special invoices for advertising industry, invoices for construction and installation industry, invoices for catering industry, invoices for export enterprises with their own names printed (there are also invoices printed by special domestic enterprises with their own names), and self-printed invoices need to be filed with the tax bureau. In addition, the catering industry has hand-torn fixed prize invoices, and ordinary invoices in some areas are reduced-angle invoices and so on.