Work in process

Work in process or work-in-process, (WIP),[1][2][3][4] work in progress (WIP),[5][6][7] goods in process,[1] or in-process inventory refers to a company's partially finished goods waiting for completion and eventual sale, or the value of these items.[8] The term is used in supply chain management, and WIP is a key input for calculating inventory on a company's balance sheet. In lean thinking, inappropriate processing or excessive processing of goods or work in process, "doing more than is necessary", is seen as one of the seven wastes (Japanese term: muda) which do not add value to a product.[9][10]

"Work in progress" redirects here. For other uses, see Work in progress (disambiguation).

WIP inventory in supply chain management

WIP inventory calculations can help a company assess their supply chain health and guide in supply chain planning.[11] In most cases, it is ideal to have low WIP inventory levels,[11] and companies that manage their inventory level efficiently tend to have lower costs.[12] Managing WIP inventory requires coordination between several functions within a company, as well as with suppliers and customers.[12] Higher WIP inventory levels are advantageous in that they can support a surge in demand, as well as improve cycle time since there is more material in production. However, this can also increase storage costs and obsolescence risk, as well as lead to waste if demand is lower than expected.[13]

WIP inventory in accounting

WIP inventory refers to goods that are in production and not yet a finished good.[14] On the balance sheet, WIP inventory is aggregated into the inventory line under current assets along with raw materials and finished goods.[15]

To calculate WIP inventory at the end of an accounting period, the following 3 figures are required: beginning WIP inventory, production costs, and finished goods. Beginning WIP inventory is the WIP inventory figure from the previous accounting period. Production costs includes all costs associated with manufacturing a product, such as raw materials, labor, and overhead costs. Finished goods is the total value of goods ready for sale in the current accounting period. The formula for calculating WIP inventory is as follows: beginning WIP inventory + production costs – finished goods.[11]

Tax treatment

In the United Kingdom, HMRC has no specific definition of work-in-process, but three different types of uncompleted items are identified for tax purposes:

  • manufactured products
  • contracts for services
  • construction contracts[16]

References
  1. "Work-in-process dictionary definition | work-in-process defined". business.yourdictionary.com. Retrieved 2014-07-12.
  2. "WORK IN PROCESS DEFINITION". ventureline.com. Retrieved 2014-07-12.
  3. "What is work in process? definition and meaning". businessdictionary.com. Archived from the original on 2019-12-05. Retrieved 2014-07-12.
  4. "Work in Process financial definition of Work in Process". financial-dictionary.thefreedictionary.com. Retrieved 2014-07-12.
  5. "Collins English Dictionary | Always Free Online". collinsdictionary.com. Retrieved 2014-07-12.
  6. "Work In Progress (WIP) Definition | Investopedia". investopedia.com. Retrieved 2014-07-12.
  7. "What Is Work-In-Progress (WIP)? | Finance Strategists". Finance Strategists. financestrategists.com. Retrieved 2020-11-11.
  8. "W - Wage to WTO (World Trade Organisation) - Dictionary". tuition.com.hk. Retrieved 2014-07-12.
  9. EKU Online, The Seven Wastes of Lean Manufacturing, Eastern Kentucky University, accessed 6 March 2023
  10. McDonald, M. P., Inappropriate Processing: Muda matters in IT, Gartner, published 9 October 2009, accessed 7 March 2023
  11. "What is Work in Process (WIP) Inventory & How to Calculate It". Ware2Go. 2021-08-25. Retrieved 2022-07-13.
  12. "What is Work in Process (WIP) in logistics? - SCM EDU". 2019-04-23. Retrieved 2022-07-13.
  13. "WIP Inventory | Advantages and Disadvantages of WIP Inventory". EDUCBA. 2020-10-26. Retrieved 2022-07-13.
  14. "What Work-in-Progress Really Means". Investopedia. Retrieved 2022-07-13.
  15. Schmidt, Jeff. "Inventory". Corporate Finance Institute. Retrieved 2023-03-07.
  16. HMRC, Business Income Manual, section 33020 - Stock: meaning of: work in progress, accessed 24 January 2018
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