the invoice number can generally be found on the front of the invoice, which is located in the "invoice number" of the invoice, and generally includes the invoice code, invoice number and invoice verification code. Electronic invoice is the product of the information age. Like ordinary invoice, it is issued by the tax bureau to merchants, and the invoice number is coded by the whole country.

How to query the authenticity of electronic invoices How to query the authenticity of electronic invoices:

(1) Query the authenticity of electronic invoices on the website of the State Administration of Taxation:

1. Log on to the national VAT invoice inspection platform in State Taxation Administration of The People's Republic of China at the website:

2. Enter the invoice code, invoice number, invoice date, check code and verification code, and click "Check" Note: the above information is in the upper right corner of the electronic invoice;

3. You can see the invoice inspection details of this electronic invoice. You can select Print or Close to complete this electronic invoice inspection.

to sum up, the codes and numbers of electronic invoices usually appear at the head and bottom of the invoice, and some electronic invoice issuing companies will mark the invoice codes and numbers in the upper right corner or the upper left corner of the invoice. However, the specific location and format may be different due to different regions and billing software. It is recommended to refer to the instructions of local tax authorities or billing software to determine the specific location.

Legal basis:

Article 14 of the Electronic Commerce Law of the People's Republic of China

When selling goods or providing services, e-commerce operators shall issue purchase vouchers or service documents such as paper invoices or electronic invoices according to law. Electronic invoices and paper invoices have the same legal effect.