What is tax registration number?

A tax registration number is the identifier a tax authority gives a VAT-registered business, printed on its invoices. Business-to-business invoices usually also carry the customer’s tax number. Checking it is the business’s responsibility.

Tax and invoicing

Tax registration number

A tax registration number is the identifier a tax authority gives a VAT-registered business, printed on its invoices.

Explained

Business-to-business invoices usually also carry the customer’s tax number. Checking it is the business’s responsibility.

Related terms

Tax invoiceA tax invoice is issued by a VAT-registered seller and shows the value of the goods or services, the VAT on them and the seller’s tax number.
Value added tax (VAT)Value added tax (VAT) is an indirect tax charged on goods and services at each stage of sale and borne by the final consumer.

All terms