VAT numbers are typically composed of both letters (the country code) and a series of numbers. Every European Union (EU) member country has a different VAT number format. To ensure you are inputting your VAT number in the right format, please review (table Q11). If you don’t have a valid EU VAT number according to the VAT Information Exchange System (VIES), please put in a request for one at your local authorities. You can check your VAT number .