Periodic Inventory
Periodic inventory is an accounting method where inventory levels and cost of goods sold are updated at specific intervals, typically at the end of an accounting period, rather than continuously. It involves physically counting inventory items to determine quantities and then applying costs to calculate ending inventory and COGS. This approach contrasts with perpetual inventory systems that track inventory in real-time.
Developers should learn periodic inventory when building or integrating with accounting, retail, or warehouse management systems for small to medium-sized businesses with lower transaction volumes. It's particularly useful in scenarios where real-time tracking isn't critical, such as seasonal businesses, manual inventory processes, or legacy systems, as it simplifies implementation and reduces computational overhead compared to perpetual systems.