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An item whose inventory is sold (turns over) once a year has higher holding cost than one that turns over twice, or three times, or more in that time. Stock turnover also indicates the briskness of the business. The purpose of increasing inventory turns is to reduce inventory for three reasons. Increasing inventory turns reduces holding cost ...
In business, Gross Margin Return on Inventory Investment (GMROII, also GMROI) [1] is a ratio which expresses a seller's return on each unit of currency spent on inventory.It is one way to determine how profitable the seller's inventory is, and describes the relationship between the profit earned from total sales, and the amount invested in the inventory sold.
Asset turnover [21] Net Sales / Total Assets Stock turnover ratio [22] [23] Cost of Goods Sold / Average Inventory Receivables Turnover Ratio [24] Net Credit Sales / Average Net Receivables Inventory conversion ratio [4] 365 Days / Inventory Turnover Inventory conversion period (essentially same thing as above)
Average Days to Sell Inventory = Number of Days a Year / Inventory Turnover Ratio = 365 days a year / Inventory Turnover Ratio This ratio estimates how many times the inventory turns over a year. This number tells how much cash/goods are tied up waiting for the process and is a critical measure of process reliability and effectiveness.
To calculate the break-even point in terms of revenue (a.k.a. currency units, a.k.a. sales proceeds) instead of Unit Sales (X), the above calculation can be multiplied by Price, or, equivalently, the Contribution Margin Ratio (Unit Contribution Margin over Price) can be calculated:
In 2009, he sells the remainder of the parts for $180. If he keeps track of inventory, his profit in 2008 is $50, and his profit in 2009 is $110, or $160 in total. If he deducted all the costs in 2008, he would have a loss of $20 in 2008 and a profit of $180 in 2009. The total is the same, but the timing is much different.
An explanation of the difference between efficiency and (total factor) productivity is found in "An Introduction to Efficiency and Productivity Analysis". [1] To complicate the meaning, operational excellence , which is about continuous improvement, not limited to efficiency, is occasionally used when meaning operational efficiency.
This figure graphs the holding cost and ordering cost per year equations. The third line is the addition of these two equations, which generates the total inventory cost per year. This graph should give a better understanding of the derivation of the optimal ordering quantity equation, i.e., the EPQ equation