The significance of the invoice 1, the invoice is recognized by the national law of formal accounting documents, its style and specifications are uniform;
2, the invoice records the content of the economic life that occurs in the role of the state, enterprises, individuals, the role of the means of financial management; 3, the invoice is an important document of the relevant state departments of the community to collect taxes. Important vouchers, can effectively control the source of tax; 4, invoices have the function of monitoring the economy, can well maintain the order of social and economic development, is an important means of financial security used to protect the country.