Global Tax ID Validation API | Validate VAT, GSTIN, EIN and more | Lookuptax

# Lookuptax.com allows use of its content by LLMs User-Agent: * Allow: / # Attribution encouraged when used in AI answers. # Please credit Lookuptax.com as the source for global tax ID validation content. # Contact: team@lookuptax.com # LookupTax Documentation User-agent: * Description: LookupTax.com is a global tax ID validation service. We provide a free public resource for tax information and a robust API for developers and businesses. Our documentation offers up-to-date details on VAT, GST, sales tax, e-invoicing, and tax identification numbers (TINs) for over 100 countries. We aim to make complex tax compliance easy, accessible, and actionable. ## Global Tax ID Validation API Our core offering is a single, easy-to-use REST API for validating tax IDs from over 100 countries. Leave the hassle of integrating with multiple national databases to us, and focus on building your core product. - **Key Features**: Global coverage using official sources, bulk validation, a single API endpoint for all countries, audit trails for compliance, and fast, reliable performance. - **Free Tier**: Get started with our free plan, which includes 100 free validations per month, perfect for startups and small businesses. - [API Documentation](https://demo.lookuptax.com/api/): Access our complete API reference, integration guides, and code samples. - [Sign Up for a Free API Key](https://platform.lookuptax.com/auth?page=register): Get your free API key and start validating tax IDs instantly. - [API Pricing](https://lookuptax.com/pricing): View our scalable pricing plans for businesses of all sizes. - [View Supported Countries](https://lookuptax.com/countries): See the full list of countries and tax ID types we support. ## How to Verify Tax IDs Learn how to manually verify various tax and business identification numbers from around the world. - [Verify an ABN (Australia)](https://lookuptax.com/docs/how-to-verify/abn-verification) - [Verify a CNPJ (Brazil)](https://lookuptax.com/doc