Show HN: Tin Validate, a tax ID validator that explains why checks pass or fail

Category: other

Tags: tax-id, validation, compliance, api, web-app

Score: 4.3/10 (Innovation: 4, Technical: 4, Documentation: 3, Utility: 5)

Tin Validate is a web app and API that validates tax identification numbers (TINs) across all 249 ISO 3166-1 countries, providing transparent step-by-step explanations for why checks pass or fail. It fills a niche compliance need by offering detailed validation logic rather than just binary results.

Target audience: backend developers, compliance officers, fintech developers

Repository: https://tin-validate.com/

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