When importing a SOP Batch using SmartConnect, my taxes are not getting automatically calculated, I am using Avalara AvaTax
Avalara does not have any eConnect procedures that will automatically trigger a tax calculation on documents pushed in from outside of GP. The tax calculations are only triggered on manually keyed transactions.
The approach to handling tax calculations in a batch created via integrations like eConnect or SmartConnect, is through the AvaTax SOP Batch Update Utility, located under: Tools – Utilities – Avatax – Update – SOP Tax Update Utility.
The instructions for running the SOP Tax Update Utility can be found in their KB article: How do I use the SOP Tax Update Utility to calculate tax on transactions imported to Dynamics GP?