The main differences between Reorder Level and Reorder Quantity are as under:
- Reorder level is the stock level of a particular item of inventory, at which a firm needs to place an order for the fresh supply or replenishment of the item; whereas reorder quantity is the magnitude or the number of units to be ordered in a new purchase order for the fresh supply of a particular inventory item.
- While reorder level gives a signal regarding when to place a new order for the fresh supply of an inventory item; reorder quantity makes obvious the size of a particular order.
- The reorder level acts as a trigger or indication for placing the order for an item; whereas reorder quantity is the actual act of calculating and placing the size on a new purchase order.
- While in reorder level, the main element is time; in case of reorder quantity, the main element is quantity or number of units.
- While reorder level provides an answer to the question ‘when’; reorder quantity provides an answer to the question ‘how much’.
- While the internal factors involved in reorder level are maximum usage during the lead time, safety level, and replenishment period; the internal factors involved in reorder quantity are carrying cost of inventory per unit, cost of order, etc.
- Whereas the external factor involved in reorder level is lead time taken by the supplier; the external factors involved in reorder quantity are cost of freight, and big order quantity discounts.
- Reorder level has first precedence. first of all, we assess whether the stock level of an inventory item is above the reorder level or below it. if the stock level is below the reorder level, it is the trigger to place a purchase order; reorder quantity is calculated to be placed on the new purchase order, only after it has been decided that a purchase order is to be made.
- While reorder level is a strategic decision; reorder quantity is a tactical decision.
- Reorder level is a policy level or higher management level decision variable; whereas reorder quantity is an operational level and routine decision.
- While reorder level is not only an inventory management, but also business continuity issue; reorder quantity is purely an inventory management issue.
- Reorder level decision is more stable; whereas reorder quantity decision is less stable with more frequent changes.
- The main risk factor in reorder level is being out of stock; whereas the main risk factor in reorder quantity is high cost per unit of the inventory item ordered.
- The other risk factors in reorder level are disruption in production and foregone sales; whereas the other risk factors in reorder quantity are being uncompetitive in pricing of the final product or service offering, and reduction in profit margin per unit in case of higher costs of the inputs.