How to effectively use a FIFO format in controlling stock?

Commonly used to calculate the value of inventory on hand at the end of a period and the cost of goods sold during the period.
This method assumes that inventory purchased or manufactured first is sold first and newer inventory remains unsold.
Thus cost of older inventory is assigned to cost of goods sold and that of newer inventory is assigned to ending inventory

First-In, First-Out (FIFO) is one of the methods commonly used to calculate the value of inventory on hand at the end of a period and the cost of goods sold during the period.
This method assumes that inventory purchased or manufactured first is sold first and newer inventory remains unsold.
Thus cost of older inventory is assigned to cost of goods sold and that of newer inventory is assigned to ending inventory.
The actual flow of inventory may not exactly match the first-in, first-out pattern.