How to Calculate the Beginning Work-in-Process Inventory. When you operate a small business you should always know how much inventory you are carrying.

How do you calculate total cost of work in process? It's as follows: Manufacturing Costs for Beginning WIP Inventory – COGM = Ending WIP Inventory. How process cost calculate the unit cost computation ...

Companies usually calculate total work in process at the end of a month, year or other accounting period. This WIP figure becomes the ending work in process inventory.