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What is the days' sales in inventory ratio?

Author:
Harold Averkamp, CPA, MBA

Definition of Days’ Sales in Inventory

The financial ratio days’ sales in inventory tells you the number of days it took a company to sell its inventory during a recent year. Keep in mind that a company’s inventory will change throughout the year, and its sales will fluctuate as well. Therefore, you should view this as an average from the past.

The calculation of the days’ sales in inventory is: the number of days in a year (365 or 360 days) divided by the inventory turnover ratio.

Example of Days’ Sales in Inventory

To illustrate the days’ sales in inventory, let’s assume that in the previous year a company had an inventory turnover ratio of 9. Using 360 as the number of days in the year, the company’s days’ sales in inventory was 40 days (360 days divided by 9). Since sales and inventory levels usually fluctuate during a year, the 40 days is an average from a previous time.

It is important to realize that a financial ratio will likely vary between industries. Hence, a company’s ratios should be compared to its own past financial ratios and to the ratios of companies within its industry.

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About the Author

Harold Averkamp

For the past 52 years, Harold Averkamp (CPA, MBA) has
worked as an accounting supervisor, manager, consultant, university instructor, and innovator in teaching accounting online. He is the sole author of all the materials on AccountingCoach.com.

Learn More About Harold

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