Chongqing tax bureau invoice electronic invoice filing is completed first. The flow chart of the invoice business of Chongqing Taxation Bureau shows that the electronic invoice is filed first, and the invoice type is verified after the filing is successful. The verification of invoice types means that taxpayers need to collect invoices after tax registration, and apply to the competent tax authorities for invoice collection procedures. The competent tax authorities confirm the types, quantities, invoicing limits and other matters according to the taxpayer's business scope and scale.