TaxID

TaxID provides a developer-friendly REST API for validating EU VAT numbers (and UK, Switzerland, Norway, Australia) by wrapping the European Commission's VIES service.

• One-endpoint validation: POST /api/v1/validate/{country}/{vat}
• Sub-10ms cached responses via Redis for repeated lookups
• Returns company name, address, validity status, and request metadata in JSON
• Built-in format validation, structured error codes, and fallback during VIES downtime
• Free tier: 100 validations/month; paid plans start at $19/month

Ideal for SaaS billing, B2B invoicing, checkout forms, and any application needing reliable VAT compliance across 31 countries.