Magento: Does TaxJar provide calculations outside of the US?

If you're integrating with Magento, then yes, TaxJar provides sales calculations in more than 30 countries including the US, Canada, Australia, and EU.

To set up international calculations, please install our Magento extension and add a nexus location under Sales > Tax > Nexus Addresses. 

• Enable checkout calculations from the TaxJar configuration screen. From there, we'll calculate sales tax in the regions and countries where you have nexus.
• Learn more in our Magento 1 extension guide.