TaxJar is a sales tax compliance platform owned by Stripe since 2021. It serves over 20,000 businesses — including Coca-Cola, Dell, and Microsoft — with automated sales tax calculation, reporting, and filing across all U.S. states. The platform integrates with major e-commerce platforms including Shopify, Amazon, WooCommerce, BigCommerce, Magento, and NetSuite.
The core product calculates sales tax in real time at checkout using the SmartCalcs API, tracks economic nexus thresholds by state, and generates return-ready jurisdiction-level reports. The AutoFile service submits sales tax returns directly to state revenue departments on behalf of businesses.
TaxJar’s main advantage is accuracy and automation. The SmartCalcs API handles product taxability nuances — including rooftop-level rate accuracy and customer exemption management — that manual approaches miss.
In 2026, TaxJar raised prices for the first time in over six years. The Starter plan increased from $19/month to $39/month, and AutoFile fees rose from $30–$35/return to $50–$55/return. The Professional plan starts at $99/month. Total cost scales significantly with order volume and number of states filed — a business filing monthly in multiple states can reach $500–$900+/month including filing fees.
The main weakness is the Stripe acquisition’s effect on product investment and support quality. Customers report support is now outsourced to an international team with slower response times, and the Shopify App Store rating has dropped to 2.9 stars based on reviews from 2023 onward.
TaxJar is best suited to e-commerce businesses with established nexus obligations in multiple states who need automated calculation and filing.