VAT rules and procedures Check to see if a VAT number is valid, search by EU country - either the country that has issued the number, or the country that has requested it. Check a VAT number How to check a VAT number There are standardised rules on VAT at EU level. But these can be applied in different ways by EU countries. VAT rules and rates Special rules on VAT apply if you buy or sell goods or services from or to another EU country. Cross-border VAT rules Refunds may be possible if your business is charged VAT on activities in another country. Refunds on VAT for your business activities Find EU policy, current and upcoming law, and other general information on VAT for businesses. VAT for businesses: overview of policies and laws in the EU