How do I get free Magento calculations from TaxJar?
If you already have an existing TaxJar account, simply upgrade to the latest version of our Magento extension (v2.2.0) and make sure checkout calculations are enabled. You'll automatically get free sales tax calculations using our new API endpoint.
If you're new to TaxJar, download our latest M1 or M2 extension and connect your account. From there you're good to go!