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How to Conduct a Reverse Sales Tax Audit

Global Tax Calculation & Determination Software for Enterprises

Automate real-time tax calculation and global tax determination across 20,000+ jurisdictions and 195 countries.

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Automated Global Tax Calculation & Determination Across Every Transaction

Global tax complexity moves fast. Vertex delivers real-time calculation, continuously updated content, and centralized compliance logic so your business can scale confidently across every market and transaction channel.

1Billion+
Data-Driven Tax Rules
20,000+
Global Jurisdictions Supported
45+
Years in Tax Technology
195
Countries Supported

Cloud, Edge, and Hybrid Tax Determination Software

Network latency and outages shouldn’t halt your transactions. Vertex O Series Edge embeds tax calculation locally at the point of sale, with cloud synchronization ensuring your rates stay current and your compliance stays intact. 

Enterprise Tax Calculation Software Built for Global Compliance

Enterprise tax compliance is a moving target. At Vertex, we eliminate the guesswork by providing a foundation of proprietary tax intelligence built over 45+ years of industry leadership. Our global research team proactively manages the complexity of shifting regulations, so your tax engine is always powered by the most current data. 

Most Up-To-Date Payroll Tax Rules & Rates

Proactive Tax Rate & Rule Updates

Our global tax experts continuously monitor and update rates, rules, and jurisdiction changes in real time to reduce the burden on IT and tax teams while improving calculation accuracy.

Audit Log History Vertex Inc.

Audit-Ready Transaction Integrity

Maintain a comprehensive, SOC 2-compliant transaction history with a transparent audit trail behind every tax calculation, helping reduce risk and simplify compliance defense.

Single Source of Tax-Ready Data

Industry-Specific Tax Logic

Go beyond standard tax rates with specialized calculation and determination logic built for Manufacturing, Communications, Leasing, Hospitality, Oil & Gas, and other complex industries.

Integration With Your Financial Systems

Seamless Connectivity Across Your Tech Stack

Vertex integrates directly with the world’s leading ERP, e-commerce, and financial systems to power real-time tax calculation and centralized tax determination across every transaction. Create a single source of truth that reduces IT overhead, eliminates data silos, and keeps global operations accurate and compliant.

Trusted by Global Enterprises to Simplify Tax Determination

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