# VAT Validator Validate EU VAT numbers > Canonical page: https://elysiatools.com/en/tools/vat-validator - **Category:** Validation - **Keywords:** vat, validator, validate, VAT number, EU VAT, tax ID, VAT validator, VAT checker, IVA, TVA, MwSt ## Overview The VAT Validator is a precise utility designed to verify the format and validity of European Union Value Added Tax (VAT) numbers. It ensures that tax identification numbers are correctly structured and recognized by official tax authorities, helping businesses maintain accurate records and comply with cross-border trade regulations. ## Inputs - **VAT Number** (text): Enter VAT number (e.g., DE123456789, GB123456789)... ## When to use - Before onboarding a new B2B client located within the European Union. - When preparing invoices for international customers to ensure tax compliance. - During the verification of supplier data to prevent errors in tax reporting. ## How it works - Enter the full VAT number, including the two-letter country code prefix, into the input field. - Submit the request to trigger the validation check against official EU tax databases. - Review the output to confirm whether the provided VAT number is active and correctly formatted. ## Use cases - E-commerce businesses verifying customer tax IDs for VAT-exempt B2B sales. - Accounting departments auditing vendor lists to ensure accurate tax documentation. - Software developers integrating tax validation into checkout or registration forms. ## Frequently asked questions ### What is an EU VAT number? An EU VAT number is a unique identifier assigned to businesses registered for VAT in an EU member state, consisting of a country code followed by a specific sequence of digits. ### Does this tool check if a VAT number is currently active? Yes, the tool verifies the status of the VAT number against official records to ensure it is currently valid for business transactions. ### Do I need to include the country code? Yes, the country code prefix (e.g., DE, FR, IT) is required for the validator to correctly identify the member state and perform the check. ### Is this service free to use? Yes, this VAT validation utility is available for free to help you verify tax IDs quickly and efficiently. ### Can I validate non-EU tax IDs? 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