periodic stock system is an inventory management method where businesses conduct regular physical counts of their stock at specific intervals, such as weekly, monthly, or quarterly. Under this system, inventory updates are not made in real-time but rather at the point of count, and businesses rely on these periodic assessments to determine stock levels and reorder products. While this system can be less time-consuming compared to perpetual inventory systems, it can also lead to inaccuracies between counts, as changes in stock between periods are not immediately recorded.