This is a bit obscure for most of you but David Mugrave provides help with Understanding Tax: How to setup Australian Wine Equalisation Tax using Tax Included with Item Price
Understanding Tax: How to setup Australian Wine Equalisation Tax using Tax Included with Item Price – Developing for Dynamics GP – Site Home – MSDN Blogs
Sales, Purchasing & InventoryTips & Hidden FeaturesMicrosoft & the GP Ecosystem
Archived post from 2012. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.
