Free real-time TIN validation for all 27 EU member states. Built for CRS compliance, financial onboarding, and anyone who needs to verify a tax identification number.
Tax ID Number Validator
Businesses need to validate Tax IDs globally — often in real-time. Our automated engine gives immediate pass/fail results, saving compliance and onboarding teams hours of manual work.
Instantly understand whether a TIN is structurally valid for its country of issue. Results in milliseconds — no waiting, no batch delays.
Filter by issuing country and validate against that nation's specific format rules. Every EU member state under the OECD CRS framework is supported.
No manual checks, no human review needed. Our engine automatically applies the correct validation logic for each country and returns a clear result.
Banks and financial institutions are obliged under the Common Reporting Standard to collect and verify TIN information. We make that process seamless.
TIN data is processed securely and never stored longer than necessary. Built with privacy-first principles in mind, GDPR compatible.
Embed TIN validation into your own systems via our API. Ideal for banks, fintechs and software providers who need validation at scale.
Click any country to see its TIN format, local name, and validation rules. Select it to pre-fill the validator above.
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Choose the EU member state that issued the Tax ID Number. Each country has its own format rules and character structure.
Type or paste the TIN exactly as it appears on the document. Our engine shows you the expected format so you know what to look for.
Our automated engine checks the TIN's structure, length and character set against that country's rules. Valid or invalid — you know immediately.
Everything you need to know about Tax Identification Numbers, CRS and FATCA obligations.
View all FAQs →A TIN is a unique set of numbers and/or characters issued by a country's tax authority to identify its residents for tax purposes. The format varies significantly between countries — for example, Germany uses an 11-digit Steuerliche Identifikationsnummer, while Spain uses a 9-character DNI/NIE with a letter checksum.
Your Tax ID Number can typically be found on your national identity documents — such as a Passport, National ID Card, or a letter from your country's tax authority. If you cannot locate it, contact your national tax authority directly. A legal or tax advisor can also help.
Under the OECD's Common Reporting Standard (CRS), financial institutions — including banks, brokers and insurers — are legally required to collect and verify the Tax Residency and TIN of all account holders. This information is shared annually between tax authorities of participating countries.
The CRS is an OECD-led global initiative for the automatic exchange of financial account information between tax authorities. Over 100 countries have signed up. Under CRS, financial institutions must collect, validate and annually report the Tax Residency information of their account holders — including their TIN.
Our tool validates the structural format of a TIN — checking that it matches the correct length, character set, and pattern (including checksum algorithms where applicable) for the selected EU country. This is a syntax check, not a live look-up against a government registry. It tells you whether the TIN is plausibly correct in format.
Yes — the online validator is completely free. For businesses needing high-volume or automated validation, we offer API access. Contact us to discuss your requirements.
Over 100 countries have signed up to the CRS. Here's what that means for account holders, financial institutions and TIN requirements.
A country-by-country guide to locating your TIN — from the German Steuer-ID to Spain's DNI and France's numéro fiscal.
Both FATCA and CRS require TIN collection — but the obligations differ. Here's a practical breakdown for compliance teams.