Legal analysis: 1. The validity period of VAT invoice is half a year. During the validity period, you must go to the tax bureau for verification and obtain a new invoice, otherwise it will be invalid.

2. Ordinary invoices are generally valid for two years. The local taxation bureau has its own regulations and there is no uniform standard. In some areas, the validity period will be printed on the invoice.

Legal basis: People's Republic of China (PRC) State Taxation Administration of The People's Republic of China's reply on the printing period of special invoices for commercial enterprises In order to further strengthen the tax collection management of commercial enterprises and reduce the losses caused by the loss and out-of-control of special invoices for commercial enterprises, the printing period of special invoices for commercial enterprises in Beijing was agreed. That is, the words "this invoice should be issued before ×××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××