# TaxJar **Source:** https://geo.sig.ai/brands/taxjar **Vertical:** Fintech **Subcategory:** Sales Tax Automation **Tier:** Leader **Website:** taxjar.com **Last Updated:** 2026-04-14 ## Summary Sales tax automation for US e-commerce; acquired by Stripe (2021) and integrated into Stripe Tax; previously served tens of thousands of merchants across all 50 states post-Wayfair ruling. ## Company Overview TaxJar is a Portland, Oregon-based sales tax automation platform that was acquired by Stripe in 2021 and subsequently integrated into Stripe Tax, Stripe's native sales tax and VAT calculation product. Founded in 2013, TaxJar built one of the most widely adopted sales tax compliance platforms for e-commerce businesses in the United States, automating the calculation, collection, reporting, and filing of sales tax across all 50 states. Before the Stripe acquisition, TaxJar served tens of thousands of online merchants, marketplaces, and SaaS companies that faced the complex and rapidly evolving U.S. sales tax landscape following the 2018 South Dakota v. Wayfair Supreme Court ruling, which enabled states to impose sales tax collection requirements on out-of-state sellers.\n\nTaxJar's pre-acquisition product addressed the fragmented state-by-state sales tax compliance problem comprehensively: it connected to e-commerce platforms including Shopify, WooCommerce, Magento, and Amazon, automatically calculating the correct sales tax rate for every transaction based on origin and destination addresses and product taxability rules. The platform aggregated sales data into state-by-state reports and automatically filed returns directly with state tax authorities, eliminating the manual monthly filing burden that required hours of staff time for merchants with sales in many states. Economic nexus threshold monitoring—tracking whether a merchant had crossed each state's revenue threshold triggering collection obligations—was a key capability given the rapidly changing post-Wayfair compliance landscape.\n\nFollowing the Stripe acquisition, TaxJar's technology forms the foundation of Stripe Tax, which provides real-time tax calculation embedded directly in Stripe's payment processing API. This integration means that any business accepting payments through Stripe can enable automatic sales tax, VAT, and GST calculation and collection without a separate tax software implementation. TaxJar continues as a brand for its AutoFile and reporting services for merchants on platforms outside the core Stripe ecosystem. ## Frequently Asked Questions ### Did Stripe acquire TaxJar? Yes. Stripe acquired TaxJar in 2021 and integrated its sales tax calculation and compliance technology into Stripe Tax, which provides native tax calculation embedded in Stripe's payment processing platform. ### What is economic nexus and why did it matter for TaxJar's growth? Economic nexus refers to the sales volume threshold above which an out-of-state seller must collect and remit sales tax in a given state—established broadly by the 2018 South Dakota v. Wayfair ruling. This dramatically expanded U.S. sales tax compliance obligations for e-commerce businesses and drove rapid adoption of platforms like TaxJar. ### Can TaxJar still be used by merchants not on Stripe? Yes. TaxJar's AutoFile and reporting services continue to serve merchants selling through Shopify, Amazon, WooCommerce, and other platforms outside the Stripe payment ecosystem. ### Who acquired TaxJar and when? TaxJar was acquired by Stripe in April 2021. It continues to operate as a standalone product while also being integrated into Stripe's broader tax compliance offerings for businesses. ### How does TaxJar determine sales tax nexus? TaxJar tracks both physical nexus (where a business has a presence) and economic nexus (where a business exceeds state sales thresholds). It alerts users when they approach or cross nexus thresholds in new states. ### Can TaxJar file sales tax returns automatically? Yes, TaxJar AutoFile automatically prepares and submits sales tax returns to state tax authorities on the user's behalf. It handles scheduling, payment, and confirmation, covering all states where the business has nexus. ### Which e-commerce platforms integrate with TaxJar? TaxJar integrates with Shopify, WooCommerce, Magento, BigCommerce, Amazon, eBay, Etsy, and many other selling channels and marketplaces, pulling transaction data to calculate tax liability accurately. ### How does TaxJar handle product taxability? TaxJar maintains a database of product tax codes (PTCs) that determine how different types of products are taxed in each state. Users assign PTCs to products, and TaxJar applies the correct tax rules based on the buyer's location and product type. ## Tags fintech, saas, b2b, platform, enterprise, automation, us-only, payment-processing, technology --- *Data from geo.sig.ai Brand Intelligence Database. Updated 2026-04-14.*