Methods of valuing closing inventory
FIFO
Materials issued out of inventory in the same order in which they were delivered into inventory.
LIFO
Materials are issued out of inventory in the reverse order to which they were delivered into inventory
Weighted AVG
Calculates the avg cost after each issue of materials
Costs involved in inventory ordering systems:
Purchase cost
Cost of actually purchasing goods
Reorder cost
Cost of placing orders includes admin time for placing order, and delivery cost
Inventory holding cost
Cost of holding items in inventory such as warehouse space and insurance