High performance and reliability
TaxJar’s sales tax API clocks in at sub-18ms with 99.99% uptime. Our calculations are over 99% accurate and we offer an accuracy guarantee for all TaxJar API users.Read how API performance and scalability makes a difference
Stay on top of tax changes
TaxJar stays on top of changes at the state, county, city and special taxing district level so you don’t have to. Don’t spend another moment with rate tables or keeping up with tax changes.
Get started with TaxJar
Let us handle the complexities of sales tax while you focus on what matters most — growing your business.Start free trial Schedule a demo
We integrated TaxJar in three weeks. One dedicated dev did it in one sprint. We were really happy with how easy it was. And since TaxJar stores everything in the cloud, we haven't had any significant downtime, and it’s scaled really well with us."
VP of Finance, Jane.com
Kornerstone Credit saves more than 70% over the prior software they used to file their sales tax returns with.
Learn more about the TaxJar API
Browse articles about our API usage model, artificial intelligence tax categorization robot and more.