Work-in-process inventory is calculated at the end of each accounting period. This figure is the ending work-in-process inventory for that quarter, year or whichever accounting period.

Learn about and revise gravity, weight, free body diagrams, resolving forces and work with GCSE Bitesize Combined Science.

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.