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Tax ID Validation API
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Tax ID Validation API

by Info Inlet Inc.

Free Trial

Validate EU VAT (VIES), JP T-number, UK VAT, US EIN — format + live lookup.

Tax ID Validation API — Validate EU VAT (VIES), JP T-number, UK VAT, US EIN — format + live lookup.

What you get

  • POST /v1/tax-id/validate — primary endpoint.
  • X-API-Key authentication, per-key rate limits, audit log.
  • OpenRouter-backed where AI is involved — no model keys to manage on your side.
  • Interactive Swagger docs at api-tax-id.knowlez.com/docs.

Plans

  • Starter — $9/mo · 1,000 checks included · $0.01/check overage.
  • Pro — $29/mo · 10,000 checks included · $0.008/check overage.

At a glance

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