Changing your sales taxes / VAT taxes is easy.

Step 1: Go to settings > edit company profile
​Step 2: Add/Edit your relevant sales taxes
​Step 3: Set your default sales tax (Optional)
​Step 4: Save (at the bottom of the page)

Step 5: Done!

This setting can only be changed on the web app at this time. We are working to bring this functionality for the mobile app.