Average inventory is a metric used to track and measure the size and value of inventory over time. Average inventory levels serve as useful indicators of a company's ability to provide customers with the goods they need and can help businesses monitor their inventory losses. The figure is typically calculated by taking the average of the number or value of goods in inventory at the beginning and end of the business year. By doing this, the average inventory balances out particularly low levels of inventory, which can be caused by seasonal or market fluctuations.

The formula for calculating the average inventory is: (Beginning Inventory + Ending Inventory) ÷ 2 = Average Inventory. This formula is often used to monitor business performance over a given period, such as one year or quarter. This can provide companies with insight into their inventory's health, as well as fluctuations in the market.

Moving average inventory is a variant of average inventory which accounts for each purchase or selling of goods within a certain period. By tracking each individual purchase and sale, companies are able to determine their exact inventory level at the end of each business day. This helps them gain a better understanding of their inventory management processes and can make it easier to identify problems and optimize operations.

For companies wishing to remain in business, accurate tracking of inventory is essential. Calculating average inventory levels helps a business not only understand their inventory losses but also get a better view on their sales performance. Knowing this key performance indicator can help keep businesses well-stocked, providing customers with the goods they need and enabling better cost management. It also helps firms identify problems quickly and can provide a good indication of any fluctuations in the market.