How do you calculate WIP valuation?

Multiply open orders by accumulated cost per order by average completion percentage, then add the unallocated overhead pool. In the example: 85 x 12,000 x 55% + 8,000 = 569,000 dollars total WIP value.

What is included in work-in-process inventory value?

WIP includes direct materials issued to the order, direct labor applied so far, and manufacturing overhead absorbed to date — everything accumulated on an order between raw-material release and finished-goods completion.

Why multiply by completion percentage?

Because an open order rarely has its full standard cost applied yet. At 55% complete, only about 55% of the expected material, labor, and overhead has been incurred, so valuing at full cost would overstate inventory.

What is the difference between WIP and finished goods inventory?

WIP is partially completed production still on the floor; finished goods are fully completed units ready to ship or sell. As an order hits 100% completion it moves out of WIP and into finished goods at full cost.

How does the overhead pool fit into WIP value?

The unallocated overhead pool is overhead that has been incurred but not yet absorbed into specific orders. Adding it — 8,000 dollars in the example — keeps total WIP from understating the indirect costs already committed to production.

What does WIP value per order tell me?

It is total WIP value divided by open orders — about 6,694 dollars per order in the example — a quick gauge of how much cost the average open job carries, useful for spotting orders that have absorbed unusually high cost.

Manufacturing Cost Accounting & Finance calculator

WIP Valuation Calculator

WIP valuation puts a dollar figure on the partially finished goods sitting on your production floor — material, labor, and overhead already absorbed into orders that aren't yet complete. Cost accountants and controllers need this number to value inventory on the balance sheet, close the month, and feed accurate cost-of-goods-sold figures. Operations leaders use it to see how much cash is tied up in unfinished work, a key lean indicator since high WIP usually signals bottlenecks and long lead times. Getting WIP valuation right matters because it sits directly between raw materials and finished goods in your inventory accounts, and errors here flow straight into reported margin.

What this calculator does

Estimates the dollar value locked in partially completed jobs on the production floor.
Use it at period close to value work-in-process before it rolls into finished-goods inventory.
It estimates total WIP inventory value by costing open orders at their accumulated cost and completion percentage, then adding any unallocated overhead pool.

Formula used

WIP value = open orders x accumulated cost per order x completion% + overhead pool
Value per open order = total WIP value / open orders

Inputs explained

Open work orders: Count of jobs currently sitting in work-in-process on the floor
Accumulated cost per order: Material plus labor and overhead absorbed into each open job so far
Average completion: Percent complete used to value partially finished work
Unallocated overhead pool: Flat indirect cost sitting in WIP not yet assigned to a specific order

How to use the result

Use it at period-end inventory close, for cycle-count reconciliations, or to quantify cash tied up in unfinished production for a lean review.
It applies one average accumulated cost and one completion percentage across all open orders, so a mix of nearly-done and just-started jobs will be less accurate than order-level costing.

Current U.S. benchmarks

The U.S. prime lending rate is 6.75% (Federal Reserve via FRED, 2026-07-02). Payback and financing math should start from today's rate, not a remembered one.

Common questions

How do you calculate WIP valuation? Multiply open orders by accumulated cost per order by average completion percentage, then add the unallocated overhead pool. In the example: 85 x 12,000 x 55% + 8,000 = 569,000 dollars total WIP value.
What is included in work-in-process inventory value? WIP includes direct materials issued to the order, direct labor applied so far, and manufacturing overhead absorbed to date — everything accumulated on an order between raw-material release and finished-goods completion.
Why multiply by completion percentage? Because an open order rarely has its full standard cost applied yet. At 55% complete, only about 55% of the expected material, labor, and overhead has been incurred, so valuing at full cost would overstate inventory.
What is the difference between WIP and finished goods inventory? WIP is partially completed production still on the floor; finished goods are fully completed units ready to ship or sell. As an order hits 100% completion it moves out of WIP and into finished goods at full cost.
How does the overhead pool fit into WIP value? The unallocated overhead pool is overhead that has been incurred but not yet absorbed into specific orders. Adding it — 8,000 dollars in the example — keeps total WIP from understating the indirect costs already committed to production.

Last reviewed 2026-05-12.