Use the VAT validator to verify EU VAT IDs with VIES-backed checks before invoicing, onboarding suppliers, or syncing business records.
With vat-validator.com you can validate EU VAT identification numbers quickly, free of charge, and privacy-friendly. Check whether a VAT ID uses a supported country code, whether it matches the expected format, and whether the number is reported as valid by the official VIES validation service.
Our VAT Validator helps you confirm whether an entered EU VAT number can be checked through VIES before you rely on it in invoices, tax workflows, or supplier records. This reduces errors in cross-border transactions and supports cleaner master data in ERP, CRM, and accounting systems.
The result page highlights the normalized VAT number, the country code, and the reported validation status. When the upstream service provides more information, additional company details can also be displayed to support manual review.
Check VAT number nowOpen a country page when you want a more focused view of local VAT structures, practical validation risks, and day-to-day finance use cases.
USt-IdNr.
DE123456789, invoice workflows, and clean partner master data for German businesses.
Open pageNuméro de TVA
FR prefix checks, validation context, and cleaner B2B data before operational use.
Open pageIVA / NIF-IVA
Variable structures by entity type, useful for early checks and less manual rework.
Open pageUID
ATU format, Austrian UID validation, and more reliable finance and partner data.
Open pagePartita IVA
IT structure, early plausibility checks, and smoother billing and approval workflows.
Open pagebtw-nummer
NL structure, better import quality, and fewer mistakes in cross-border operations.
Open pagenuméro de TVA / btw-nummer
BE format and practical checks for multilingual B2B and billing workflows.
Open pagenumer VAT / NIP-UE
PL structure, cleaner partner data, and less manual rework for new business partners.
Open pageDIC
CZ structure, cleaner normalization, and fewer follow-up questions in finance and procurement.
Open pageVAT number
IE formats with letters and digits, useful for SaaS, finance, and B2B onboarding flows.
Open pageNIF-IVA
PT format, better master data quality, and fewer issues before invoicing.
Open pagecod TVA / CUI
RO structures with variable length, useful for early plausibility checks in partner data.
Open pageA result needs context. Technical validation, actual business activity, and tax treatment are separate questions.
VIES reports the number as valid at the time of the request. This confirms the response from the responsible member state, but does not automatically prove the partner’s identity, the correctness of an invoice, or the tax treatment.
VIES does not confirm the submitted country-and-number combination. Check the spelling, prefix, and source. An invalid response alone does not prove fraud.
The input does not match the expected country format at a technical level. No positive VIES confirmation can be derived from that input.
The number could be normalized, but the request did not complete successfully. Wait for a response and do not treat a temporary outage as an invalid result.
Official source
The validation status is based on the VIES response from the European Commission. VIES queries the responsible national VAT database; the company details returned can differ by member state.
Open VIES at the European CommissionCompare country formats in the guide or start another technical validation directly.
VAT number checks are especially useful when onboarding vendors, preparing invoices, reviewing customer tax data, or validating information submitted through B2B forms. A quick check helps teams spot obvious issues before they cause manual corrections, payment delays, or compliance risks.
The validator is designed as a fast operational tool for finance, support, and engineering teams that need a simple confirmation step for EU VAT IDs without adding friction to their workflow.
Protecting business data matters. The plain-text VAT number is not stored permanently. For technical statistics, we store a hash of the normalized number and the validation status; the number is sent to VIES for the required validation request. The tool supports technical and operational checks and does not replace tax or legal advice.
Enter the VAT number into the validator to review whether the ID uses a supported EU country code, whether it can be normalized correctly, and whether the official VIES service reports it as valid.
The validator checks VAT number formatting, country-code compatibility, and the validation response returned by the official VIES system. If additional company details are available from the service, they may also be shown on the result page.
Validating VAT IDs before invoicing helps reduce accounting errors, improves supplier and customer data quality, and supports more reliable tax-related workflows for cross-border EU business.
Yes, the VAT validator can be used online for individual checks without registration. It is designed as a quick operational tool for manual VAT verification.
The plain-text VAT number is not stored permanently. A hash of the normalized number and the validation status are stored for technical statistics, and the number is sent to VIES for validation.
No, a successful validation result helps confirm that the VAT number can be checked successfully, but it does not replace tax, accounting, or legal review for your specific transaction.