Vertex Validator

An API-based solution for automated validation of business tax IDs.

Vertex Validator

Validate VAT/GST identification with ease

Vertex Validator is an API-based solution than can be integrated into a seller’s existing ERP, CRM, e-commerce, marketplace, or online platform to provide validation of business tax IDs to simplify customer/vendor management and support global tax audits.

Vertex Inc.

Explore the Features, Benefits & Highlights

Support international expansion as well as local tax requirements.

Integrates with regional databases to validate VAT/GST identification numbers in 50+ countries. Full reporting provided to manage customer tax IDs to support audits. Where applicable, supports local requirements including exposing Captcha to the buyer during checkout, and validating two tax IDs in a single request.


Vertex Validator provides VAT ID validation to support zero-rated supplies and the reverse charge mechanism.

Validates the VAT ID to support zero-rated B2B EC sales and the B2B reverse charge mechanism where applicable.


Vertex Validator is easily configurable to support your business needs.

The API-based solution provides flexibility for where in the sales/onboarding flows to conduct the validation step. Integrate it with your existing ERP, CRM, e-commerce marketplace, or online platforms. You can even implement it with your Vertex O Series (or other) VAT/GST calculation engine.

Schedule validation in multiple ways.

Vertex Validator enables the user to conduct direct single-transaction real-time validation, scheduled/reoccurring for validations for subscription sellers, and batch validations.


Knowledgeable consultants can support your unique implementation.

Experienced implementation consultants are available to ensure the ideal integration with your existing IT platforms and sales journey.

What is the Reverse Charge Mechanism?

A verified VAT ID is needed:

  1. for the reverse charge mechanism. The seller does not charge VAT, and the buyer self-assesses and pays the VAT in their home country. It typically applies to B2B cross-border services and to domestic transactions that are susceptible to VAT fraud, such as construction services or sales of mobile phones. 
  2. for zero-rated cross-border sales of goods within the EU. The seller charges 0% VAT, and the buyer is responsible for reporting and paying acquisition VAT in their destination country.


Discover More about Vertex Validator

Related Products

  • Vertex for e-Commerce

    Automated global tax calculations fit seamlessly into your online sales journey and provide a solid foundation for managing compliance requirements.

  • Vertex for Marketplaces

    Accelerate your marketplace growth while staying in compliance with Europe VAT requirements.

  • Vertex VAT Compliance

    Streamline and automate VAT/GST filing reports and returns to improve compliance and audit performance.

Get in Touch

Connect with us to find out what Vertex Validator can do for your business.