I have integrated AvaTax in magento. I have done all necessary configuration. Product configuration, AvaTax configuration and checkout page screenshot is added below. In checkout page I am facing problem. Where I can not see tax getting calculated. But when I check order details I can see tax percentage. But somehow that percentage is not getting applied to total amount. Please check screen shots below. 1. AvaTax Configuration 
Product tax class configuration 
Order information. Tax percentage is highlighted in red. 
Checkout issue. 