Developer Portal | Vertex Inc.

Welcome to the Vertex Developer Network. Select a Vertex product and start integrating immediately with:

Interactive requests and responses
Tailored guides with guided examples
OpenAPI specifications

Vertex Inc. Tax Technology at the speed of business

Important Note

Be aware that support for the REST v1 API is no longer available. Refer to the v1 API documentation for further details and transition instructions.

Vertex APIs

Vertex O Series

The Vertex O Series REST APIs give you access to tax calculations, tax configuration, transaction synchronization, tax area lookups, and online commerce.

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Vertex e-Invoicing

Upload invoices for submission and support multi-country digital reporting requirements with Vertex e-Invoicing APIs.

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Vertex VAT Compliance

A Vertex secure file upload service provides an API-driven method for uploading customer data files into VAT Compliance.

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Solution Reporting

Secure endpoints to list, schedule, and retrieve reports and templates with pre‑signed download links. Automate reporting workflows by managing report definitions and schedules programmatically.

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Vertex Certificate Center

Search, create, and edit certificate and customer records using Vertex Certificate Center APIs.

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Vertex Smart Categorization

Automate and streamline product tax categorization with generative AI and Human-in-the-loop guidance.

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Vertex Payroll Tax

Calculate payroll tax for employees across the United States and Canada with Vertex Payroll Tax APIs.

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Vertex for e-Commerce and Marketplaces

The REST APIs that support the features in Vertex for e-Commerce, Vertex for Marketplaces, Vertex Invoice IQ, and Vertex Validator.

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Vertex for Shopify

The Vertex for Shopify integration provides tax calculations for sales, use, and global value added tax for your business and consumer e-commerce transactions. Easy setup and seamless integration streamline your transactions and improve compliance.

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Request	Endpoint	Method
Validate Tax Number	`/api/v3/tax_numbers/{tax_id}/validate`	GET
Bulk Validate Tax Numbers	`/bulk/api/v3/tax_numbers/validate`	GET
Poll Results	`/bulk/api/v3/tax_numbers/validate`	GET
Poll Last Seen Result	`/bulk/api/v3/tax_numbers/validate?{last_seen_id}`	GET