An inventory write-off is a process of removing from the general ledger any inventory that has no value.

Using the direct write-off method, a business will record a credit to the inventory asset account and a debit to the expense account. For example, say a company with $100,000 worth of inventory decides to write off $10,000 in inventory at the end of the year. First, the firm will credit the inventory account with the value of the write-off to reduce the balance. The value of the gross inventory will be reduced as such: $100,000 - $10,000 = $90,000. Next, the inventory write-off expense account will be increased with a debit to reflect the loss.

The expense account is reflected in the income statement, reducing the firm's net income and thus its retained earnings. A decrease in retained earnings translates into a corresponding decrease in the shareholders' equity section of the balance sheet.

If the inventory write-off is immaterial, a business will often charge the inventory write-off to the cost of goods sold (COGS) account. The problem with charging the amount to the COGS account is that it distorts the gross margin of the business, as there is no corresponding revenue entered for the sale of the product. Most inventory write-offs are small, annual expenses. A large inventory write-off (such as one caused by a warehouse fire) may be categorized as a non-recurring loss.

- CIPS study guide page 86-90

- Inventory Write-Off

LO 2, AC 2.1