The Value Added Tax Identification Number (VATIN) is a unique identifier used by many countries to identify entities for Value Added Tax purposes. These identification numbers are mostly numeric digits beginning with a 2-letter country code.
VAT-registered businesses are required to collect VAT from their customers and return it to the government. Customers can use the VATIN to identify these businesses in their tax filings. Businesses registered for VAT are required to include their VATIN on invoices and other purchase-related documents to comply with VAT regulations.
The VATIN is also used for issuing VAT refunds to businesses. Also, VATIN helps the government streamline and regulate cross-border trade across different countries within the EU region.