Raw materials inventory is the total cost of all component parts currently in stock that have not yet been used in work-in-process or finished goods production.
There are two subcategories of raw materials, which are:
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Direct materials. These are materials incorporated into the final product. For example, this is the wood used to manufacture a cabinet.
- Indirect materials. These are materials not incorporated into the final product, but which are consumed during the production process. For example, this is the lubricant, oils, rags, light bulbs, and so forth consumed in a typical manufacturing facility.
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When raw materials are consumed, the accounting treatment varies, depending on their status as direct or indirect materials. The accounting is:
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Direct materials. Debit the work-in-process inventory account and credit the raw materials inventory asset account. Or, if the production process is brief, bypass the work-in-process account and debit the finished goods inventory account instead.
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Indirect materials. Debit the factory overhead account and credit the raw materials inventory asset account. At the end of the month, the ending balance in the overhead account is allocated to the cost of goods sold and ending inventory.
