Trending October 2023 # Advantages And Disadvantages Of Wip Inventory # Suggested November 2023 # Top 14 Popular |

Trending October 2023 # Advantages And Disadvantages Of Wip Inventory # Suggested November 2023 # Top 14 Popular

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Introduction of WIP Inventory

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Based on the company’s policy, inventory must be valued at frequent intervals like biweekly, month-end, quarterly, etc. All goods will not be in a fully completed stage as of the cut-off date of valuation, as manufacturing is an ongoing process. So, the concept of WIP arises in the manufacturing process, and the same needs to be valued and reported under inventory. The concept of WIP arises in industries like manufacturing, construction, consultancy, etc.

The Formula for WIP Inventory

WIP = Cost of Raw Materials + Cost of Labour + Cost of Overhead (Proportionate to the Level of Completion

Raw Materials: These include materials directly utilized in the process of production.

Labor Cost: The cost of labor in production encompasses the wages or salaries paid to workers and staff who are directly involved in the manufacturing or production process.

Closing WIP Inventory = Opening WIP Inventory + Manufacturing Costs – Cost of Goods Manufactured

Examples of WIP Inventory Example #1

Y Corp is the business line of producing toys. It has an opening Work-in-progress inventory of $10,000. During the production period, the company incurs the raw material cost of $25,000 used in production, the Labour cost of $5,000, and another manufacturing cost of $10,000. At the end of the period, the finished goods produced are valued at $35,000.

The Closing Work-in-progress inventory is as follows:

Closing WIP Inventory = Opening WIP Inventory + Total manufacturing cost – Cost of goods manufactured (Finished goods)

Closing WIP Inventory = $10,000 (+) $25,000 (+) $5,000 (+) $10,000 (-) $35,000

Closing WIP Inventory = $15,000 

Example #2

Raw materials cost (Car parts) – $500,000

Labor cost – $1,000 per month per labor. Totally 5 laborers are involved in this manufacturing section.

Zelon group finally produced 8 cars at the end of the period, valued at $168,000.

The remaining 2 Zen+ cars are in the WIP stage, valued at $42,000. ($200,000+$5,000+$5,000-$168,000)

Advantages of WIP Inventory

Work-in-progress (WIP) inventory is in the process to become finished goods; it helps in earlier conversion to the finished goods and improves the turnaround cycle.

It helps meet the demand for the product as it contributes to a better production cycle.

Tracking WIP helps in understanding the production process, as higher WIP indicates there can be some bottlenecks in the production process, and there is no smooth flow of the process. It helps in identifying and resolving such issues.

Valuation of WIP inventory is a little complicated as we need to understand the progress and process at which the inventory stands. (i.e.) upto what level of completion, and the costing involved in the same as of the cutoff date.

Production of goods is driven by the existing demands in order to meet customer needs and fulfill market requirements. However, continuous production may lead to excess inventory accumulation.

Tracking inventory and insuring the same comes with some additional costs to the business.


Work-in-progress is an important element in inventory valuation. It forms part of the company’s balance sheet, along with raw materials and finished goods. Management tries to keep as low as possible, as there is no market for unfinished goods, and moreoverWIP tracking helps monitor production schedules and processes. Keeping inventory at a minimal level as per requirement helps in reducing the investment of the company. The production or the business manager must monitor the WIP constantly to allocate appropriate costs and for proper valuation of inventory.

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