What it means
When running a business, money is tied up not just in raw materials waiting to be used, and finished goods waiting to be sold, but also in items currently being built or processed. This middle category is Work in Progress.
Tracking this accurately is vital because it ensures your financial statements reflect the true value of your company's assets at any given moment. If you ignore work in progress, your monthly profit and loss statements can swing wildly, making it difficult to understand your actual operational performance.
In practical terms, calculating work in progress involves tallying up the direct materials, direct labour, and a portion of factory overheads or indirect costs that have been applied to unfinished items. As production moves forward, these costs accumulate.
Once the product is finally completed, the total amount is transferred out of the work in progress account and into finished goods inventory, ready to be sold to customers. For managers, keeping a close eye on work in progress helps identify bottlenecks in production.
If work in progress piles up too high, it means items are taking too long to complete, which ties up valuable cash flow that could be used elsewhere. Conversely, a very low balance might signal idle workers or a shortage of raw materials, pointing to inefficiencies that need immediate attention.
In practice
Real-world examples.
Example
A custom furniture maker starts building a bespoke oak dining table. The timber costs 400 pounds and carpenter wages are 300 pounds. While the table is still unpolished in the workshop, its WIP value is 700 pounds.
Example
A software development agency is halfway through building a mobile app for a client. They have invested 5,000 pounds of developer time into the project so far, which sits as WIP until final delivery and invoicing.
Example
A boutique bakery prepares a large batch of wedding cake tiers. The flour, butter, and decorator hours total 250 pounds. Until the cakes are assembled and boxed, this sits on the balance sheet as WIP inventory.
Think of it
“Imagine baking a three-tier wedding cake. The flour and eggs on your counter are raw materials. The boxed cake ready for collection is finished goods. The cake currently baking in the oven, half-decorated, is your work in progress.
Formula
Calculation
Beginning WIP + Manufacturing Costs Added (Direct Materials + Direct Labour + Factory Overhead) - Cost of Goods Manufactured = Ending WIP.
Example: If you start the month with 1,000 pounds in WIP, add 4,000 pounds in new materials and labour, and complete 3,500 pounds of goods, your ending WIP is 1,500 pounds (1,000 + 4,000 - 3,500).Case study
Seen in the real world.
Apex Manufacturing makes custom metal brackets for the construction industry. At the end of September, their accountant, Sarah, needed to value the inventory for the monthly balance sheet. Apex had fifty custom orders on the shop floor in various states of completion. Sarah calculated that 12,000 pounds of raw steel had already been cut and shaped for these orders. She then added 8,000 pounds for the factory wages paid to machine operators who worked on those specific parts, plus a 3,000 pound allocation for factory rent and utilities. This brought the total Work in Progress value to 23,000 pounds. By accurately recording this figure, Sarah ensured that the balance sheet showed a true picture of company assets. Without this step, the September profit and loss statement would have absorbed all those costs at once, making the month look artificially unprofitable while understating the actual value locked up on the factory floor.
Watch out
Common mistakes.
- Failing to update work in progress values at the end of each reporting period, leading to inaccurate financial statements.
- Confusing raw materials with work in progress once work on them has officially begun.
- Forgetting to include a fair share of overhead costs, such as factory rent or electricity, in the total work in progress valuation.
Questions
People also ask.
Is work in progress considered an asset or a liability?
Work in progress is considered a current asset because it represents money spent on items that will soon be finished and sold for revenue.
What is the difference between WIP and finished goods?
WIP refers to items currently being produced and not yet ready for sale. Finished goods are fully completed products sitting in inventory waiting for a customer.
Why does work in progress matter for cash flow?
High levels of work in progress mean cash is tied up in unfinished items. Reducing the time it takes to complete these items frees up that cash for other uses.
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