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– initial inventory level. We assume that the supplier possesses products in the inventory at the beginning of the demand of the delivery period. – penalty cost (or back order cost). If there is less raw material in the inventory than needed to satisfy the demands, this is the penalty cost of the unsatisfied orders.
Yield management (YM) [4] has become part of mainstream business theory and practice over the last fifteen to twenty years. Whether an emerging discipline or a new management science (it has been called both), yield management is a set of yield maximization strategies and tactics to improve the profitability of certain businesses.
The ABC analysis suggests that inventories of an organization are not of equal value. [2] Thus, the inventory is grouped into three categories (A, B, and C) in order of their estimated importance. 'A' items are very important for an organization. Because of the high value of these items, frequent value analysis is required.
Two very popular methods are 1)- retail inventory method, and 2)- gross profit (or gross margin) method. The retail inventory method uses a cost to retail price ratio. The physical inventory is valued at retail, and it is multiplied by the cost ratio (or percentage) to determine the estimated cost of the ending inventory.
The difference between the cost of an inventory calculated under the FIFO and LIFO methods is called the LIFO reserve (in the example above, it is $750, i.e. $5250 - $4500). This reserve, a form of contra account , is essentially the amount by which an entity's taxable income has been deferred by using the LIFO method.
Then a markup is set for each unit, based on the profit the company needs to make, its sales objectives and the price it believes customers will pay. For example, if a product's price is $10, and the contribution margin (also known as the profit margin) is 30 percent, then the price will be set at $10 * 1.30 = $13. [3]
If is the cost of setting up a batch, is the annual demand, is the daily rate at which inventory is demanded, is the inventory holding cost per unit per annum, and is the rate of production per annum, the total cost function () is calculated as follows: [13]
The EOQ indicates the optimal number of units to order to minimize the total cost associated with the purchase, delivery, and storage of a product. EOQ applies only when demand for a product is constant over a period of time (such as a year) and each new order is delivered in full when inventory reaches zero. There is a fixed cost for each ...