How does economic inventory management work in practice?
In practice, economic inventory management is based on analyzing three central cost categories:
Ordering costs – the costs incurred each time an order is placed with a supplier (administration, freight, handling).
Holding costs – the costs of keeping goods in stock, including rent, insurance, shrinkage, and capital costs.
Stockout costs – the costs of running out of goods, such as lost sales or dissatisfied customers.
A classic tool in economic inventory management is the calculation of the optimal order quantity, often referred to as EOQ (Economic Order Quantity). The objective is to mathematically determine the order size that minimizes the combined ordering and holding costs.
At the same time, companies determine a reorder point (ROP), which specifies when new goods must be ordered. The reorder point takes consumption rates and lead times into account to avoid stockouts.
To work data-driven with these calculations, accurate data on inventory movements, sales frequency, and lead times is required. Modern inventory management plays a key role here, as systems provide real-time visibility into stock levels, history, and turnover.
The relationship between inventory costs and capital tied up
One of the primary reasons for working with economic inventory management is to reduce unnecessary inventory holding and, consequently, capital tied up in stock.
When goods sit in inventory, capital is tied up and cannot be used for other purposes. The larger the inventory, the higher the capital commitment – and the greater the liquidity requirements. Conversely, too little inventory can result in lost revenue and dissatisfied customers.
Economic inventory management therefore aims to find a balanced level where:
Inventory is large enough to maintain a stable service level
Inventory is not larger than necessary
Capital is utilized efficiently
Analyses of inventory turnover and rotation rates can provide valuable insight into how quickly goods move through the warehouse. Slow turnover may indicate excess stock or inefficient planning.
Economic inventory management in interaction with purchasing and order flow
Economic inventory management cannot stand alone. It is closely connected to both purchasing management and order management.
Purchasing management ensures that orders are placed at the right time and in the right quantities. Without systematic purchasing processes, a company risks either overstocking or frequent stockouts.
Order management directly impacts inventory movements, as each sales order reduces available stock. Therefore, it is essential that sales data and inventory data are integrated so that planning decisions are based on up-to-date information.
In companies with complex product flows, a WMS (Warehouse Management System) can support economic inventory management by ensuring accurate registrations, traceability, and continuous updates of stock figures. When the data foundation is reliable, financial calculations also become more dependable.
Benefits of economic inventory management
When implemented systematically, economic inventory management can create several business advantages.
First, it improves cost control. The company gains insight into the true cost of holding inventory and can make informed decisions.
Second, it enhances liquidity. By reducing unnecessary inventory levels, capital is released and can be invested in growth, product development, or marketing.
Third, it strengthens service reliability. When reorder points and optimal order quantities are calculated correctly, the risk of both overstocking and understocking is reduced.
Finally, economic inventory management provides a stronger foundation for strategic decision-making at management level. Data on inventory value, turnover, and costs can be used actively in planning and budgeting.
When is it relevant to connect economic inventory management with warehouse operations?
Economic inventory management becomes particularly relevant in companies where:
Inventory constitutes a large share of total assets
Demand fluctuates significantly
Supplier lead times are long
Margins are small and cost control is critical
In such cases, a digital system like Rackbeat can provide the necessary overview of inventory movements, planning, and historical data. When inventory data, purchasing, and orders are consolidated in one place, it becomes easier to work systematically with financial calculations and ongoing optimization.
Economic inventory management is therefore not only about mathematical formulas, but about creating transparency in the entire financial structure of the warehouse and making planning more fact-based.
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