TaxJar, founded in 2013 and now part of Stripe, specializes in cloud-based sales tax automation solutions for small and medium-sized businesses in the United States. The company offers a comprehensive suite of services that streamline the sales tax lifecycle, including tax calculation, nexus tracking, reporting, and filing. This helps e-commerce companies manage their sales tax obligations effectively. The TaxJar platform integrates with popular e-commerce platforms like Amazon, Shopify, and Magento, allowing businesses to automate sales tax calculations and filings across various sales channels. With over 23,000 customers, including startups and established online businesses, TaxJar supports clients in navigating complex sales tax regulations and reconciling transaction data. Its automated filing features save time and reduce compliance errors, making it a valuable resource for online retailers and internet businesses.