The Avalara API
Tap into a powerful tax API to integrate your existing financial applications with Avalara’s transaction tax system.
One API for tax compliance
With a single, unified API for sales and use tax, VAT, cross-border transactions, and exemptions, Avalara puts a world of transaction tax solutions at your feet.
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Real-time tax calculation
Avalara’s API enables lightning-fast tax calculation for transactions across tens of thousands of jurisdictions all over the world.
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It's about precision
Regular updates of tax rates and rules lead to more accurate tax calculation for millions of products and services.
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Exemptions made simple
It’s easy for customers to tie non-taxable transactions to applicable exemption certificates with an end-to-end tax document management solution.