Frequently Asked Questions

Our mission is to simplify tax ID validation. We carefully research compliance rules and tax ID structure and syntax, and design forms and algorithms that strictly apply those rules.

What security measures do you have in place?

Security is especially critical when it comes to sensitive personal information. That is why our data transfers are secured with AES-256 encryption, access is restricted with identity and access management policies, and all of our endpoints are reviewed against the OWASP Top 10 awareness principles. Our infrastructure is designed for data redundancy and regularly backed up to ensure recoverability.

Does Tax ID Pro store tax ID numbers sent in validation or lookup requests?

Tax ID Pro does not permanently store tax ID numbers sent to our validation or lookup service. When a tax ID number is transmitted to our API in a secure HTTP request, it is stored in memory for a few milliseconds while it is processed, then it is flushed from memory.

What countries are supported by the validation service?

We support individual, entity, and VAT tax IDs for over 100 countries. For a complete list, please see our supported countries page.

Why should I validate or look up tax ID numbers?

If you collect tax information in the course of your business, you should take steps to ensure that the information collected is accurate and complete. Strong validation can help to catch errors and intentional fraud.