Invoice refers to the text issued by the seller to the buyer in economic activities, which mainly includes the name, quality and agreed price of the products or services provided to the buyer.

In addition to the advance payment, the invoice must also include the money paid by the buyer to the seller according to the agreed conditions, and must include the date and quantity, which is an important proof of accounting.

For internal audit and audit, each invoice must have Cage's unique journal number, which can prevent invoices from repeating or skipping numbers.

Simply put, no ticket is the original proof of cost, expense or income.

Invoice plays an extremely important role in China's social and economic activities;

1, invoice has the characteristics of legality, truthfulness, uniformity and timeliness, and is one of the most basic accounting original vouchers;

2. Invoice is the carrier of recording economic activities and an important tool of financial management;

3 invoices are an important basis for tax authorities to control tax sources and collect taxes;

4. Invoice is an important means for the state to supervise economic activities, maintain economic order and protect national property safety.