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TaxJar SalesTax API - Developers

The TaxJar SalesTax API provides information about sales tax rates, allowing to upload transactions and focus on business. The API discerns tax levels for different types of products, locations, shipping, origin-based vs destination-based, and more. Available with JSON format, API Key and Token authentication, and SDKs in Ruby, Python, PHP, Node.js, C#, and Java languages. TaxJar provides sales tax calculation services for eCommerce in the U.S. and 30 other countries including VAT in the EU and Canada.