This article is part of our Business and Enterprise Software resource section
Inventory management is vital to successfully running any product-based business. For businesses managing inventory alongside purchasing, sales, and financial operations, understanding the role of an ERP system can help create a more connected approach to managing business data. You might make sales consistently, but if you do not keep proper accounts and track your inventory, you might lose money in the long run. Businesses that coordinate inventory across suppliers, warehouses, and distribution channels can also benefit from understanding the advantages of digital supply chain management to improve visibility and coordination.
Key performance indexes are essential in managing your inventory. Knowing which inventory management KPIs to prioritize could be the lifeline of your business. We will examine eight KPIs that cut across different aspects of inventory management, including sales, storage, and operations.
This article is part of our Supply Chain, Logistics & Inventory resource section
Table of Contents
Eight key KPIs for successful Inventory Management in 2026
1. Inventory Turnover Rate
This is also known as inventory turnover ratio or inventory return, and it is one of the handiest KPIs for inventory management. It monitors the rate at which a store sells and replaces its stock within a specified period, usually a year. The formula for calculating this KPI is Inventory turnover ratio = Cost of goods sold/Average inventory value.
The inventory turnover rate is a valuable indicator of the efficiency of your inventory management process. Having the right tools in place can make these measurements easier, which is one reason understanding the importance of inventory management software is valuable for growing businesses. A higher turnover means your process is efficient. Maintaining your average inventory value and not lowering it to achieve a higher turnover rate is good practice. Modern technologies are also changing how businesses monitor stock levels and optimize their processes, contributing to the broader trend of revolutionizing inventory management.
2. Inventory Carrying Cost
This is also known as Holding Cost, which refers to the percentage of a company’s value that goes to maintaining its inventory. What is the total cost of inventory? You must include stock-keeping unit (SKU number), storage location and accompanying costs, cost of capital, transportation, and more; this is key to finding your inventory carrying cost. The formula: Inventory carrying costs = [(inventory service costs + inventory risk costs + capital cost + storage cost) / total inventory value] x 100.
Keep this typically between 15% and 20% so you do not make losses.
3. Accuracy of Forecast Demand
This is also known as Demand forecast accuracy. This KPI helps you match your predicted demand for your stock to actual demand. The formula for calculating this KPI is Accuracy of Forecast Demand = [(actual/real demand—predicted demand) ÷ actual/real demand] x 100.
This KPI is essential as it helps you accurately determine the demand for your product. The difference between your prediction and actual demand shows how accurately you can gauge the market. Good ERPs come with a demand forecast feature.
4. Sell Through Ratio
This KPI shows the percentage of your inventory sold over time. The formula for calculating it is Sell-through rate = (Number of units sold ÷ Number of units received) x 100.
A high sell-through rate showcases your ability to satisfy your customers’s demands. In retail environments, using the right technology can also improve the purchasing experience, and a POS system can help increase your retail sales while giving you useful sales data for inventory decisions. This KPI also identifies which products sell faster in your inventory. For retail and food-service businesses, a POS system for your restaurant or retail business can connect sales activity with inventory tracking and make it easier to understand which products are moving quickly. For sellers listing products on several online marketplaces, cross-listing inventory to grow sales can help expand product exposure while making it important to track stock availability and sales performance across channels.
5. Customer order cycle time
One of the major concerns of businesses is the time it takes to satisfy a customer or client, and this is essentially what this KPI measures: how long from making an order it takes to fulfill that order. There are four steps to consider in a customer order cycle, they are:
- Order receipt and processing
- Confirming the order and receiving payment
- Fulfilling the order
- Making the delivery
The unit for calculating this KPI is in days, but this can change depending on certain factors, i.e., a day delivery.
Its formula is Customer order cycle time = actual delivery date – order date. When delivery speed affects this KPI, route management software can help businesses plan more efficient routes and reduce unnecessary delays.
You can use this KPI to check how efficient your supply chain really is. For businesses that rely on vehicles to move products between suppliers, warehouses, and customers, fleet management software can also help improve the delivery side of inventory operations.
6. Average Inventory
Let’s take a look at the formula for calculating average inventory first before we delve into what it means: Average inventory = (beginning inventory + ending inventory) / 2. Basically, average inventory refers to the number of goods you have in stock at a given time.
Why is this KPI vital for your inventory management? Keeping this information accurate is another reason businesses should understand the importance of inventory management software when managing stock across different locations. Simple, you can better monitor spikes or sudden drops in your stock if you know your average inventory, helping you better serve customers at all times. When inventory is spread across multiple connected locations and systems, network inventory management can provide better visibility into the assets and resources being tracked.
7. Stock-Outs
If you frequently have to put an ‘Out of stock’ notice on certain goods in your store, then this is one KPI you should track better. Stock-outs monitor how frequently you run out of stocks. Accurate stock counts are easier to maintain when sales and inventory data are captured automatically, such as through barcode scanners in a POS system. The formula for this KPI is Stock-outs = (# items out of stock / # items shipped) x 100.
If you want to keep your customers, it’s very important to know what products run out of stock quickly and optimize your supply chain to prevent this. Businesses that rely on printed labels, invoices, stock records, or other documents can also benefit from a printing management system to keep document-related processes organized.
8. Inventory shrinkage
Inventory shrinkage is the quantity of goods a business should have on hand that it cannot reasonably justify its absence. The business advertises these items for sale but either lacks the inventory or cannot sell them. Usually, shrinkage comes from miscounts, fraud, theft, or damage.
This is the formula for inventory shrinkage: Inventory shrinkage = ending inventory value – physically counted inventory value.
For businesses managing specialized products, maintaining dependable supplier relationships can also support better stock availability and replenishment planning. A reliable electronics components supply chain partner can be particularly relevant when tracking inventory accuracy and preventing supply disruptions.
