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Writer's pictureSedat Onat

DIO - Days Inventory Outstanding

Updated: Aug 30, 2023

It is a calculation method that calculates how long it takes for the goods in stock and, if possible/necessary, to be converted into sales. General usage is in the form of time spent in a stock account. The goal here is to reduce the cost of holding stock by providing low times.


Formula;

(Average Stock / Cost of Sales) x Relevant Period Duration

Average Stock = (Beginning Stock + End-of-Period Stock) / 2

Or just End-of-Period Stock (from perspective)

The period duration is usually calculated as 365days/year or 90days/quarter year.


Unless a comparison is made, the result alone will not mean anything because there is no standard for it. The result may vary on the basis of time/sector/country/period. For this reason, it would be more accurate to make a relative and strategy-oriented evaluation rather than making an immediate comparison.


The contributions of this calculation are;

  • Measures sales performance,

  • Measures the liquidity of stocks,

  • Measures how many days sales can be made with stocks,

  • Provides control of production and/or stock keeping policy,

  • Provides control of the Minimum Stock policy,

  • It contributes to the investigation of root causes of financing problems.

 

References

 






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