Value Added Tax (VAT) is an indirect tax that applies to all commercial activities involving the production and distribution of goods and the provision of services.
VAT is usually charged as a percentage (i.e. tax rate) of the sales price. The tax rate may vary among different countries and different items sold.
To learn more about VAT in EU, please follow the link: https://ec.europa.eu/taxation_customs/business/vat/what-is-vat_en