Nettobedarf
Also: Netto-Bedarf, Nettobedarfsmenge, Nettobedarf Logistik, Net Requirement
AI-generated
The net requirement indicates the quantity of an item that actually needs to be procured or produced after available stock and already initiated receipts have been deducted from the total requirement.
Key facts
- The net requirement is derived from the gross requirement minus available stock and planned receipts such as open purchase orders or production orders.
- It forms the direct basis for purchase order proposals and production orders in material requirements planning.
- The accuracy of the net requirement depends significantly on the quality and currency of the stock data.
- Blocked or reserved stock only reduces the net requirement if the planning system is configured accordingly.
- Lot-sizing rules and safety stocks are typically applied to the result only after the net requirements determination.
What is the net requirement?
The net requirement refers to the quantity of demand that remains open after all available resources have been taken into account. The starting point is always the gross requirement – that is, the total determined demand from orders, forecasts, or bill of materials explosions. From this gross requirement, all positions that reduce the actual procurement need are then subtracted: freely available stock, already open purchase orders with suppliers, scheduled production receipts, and stock transfers from other storage locations. What remains after this netting is the net requirement – the quantity for which an action still needs to be taken.
How does net requirements calculation work in practice?
In ERP and planning systems, net requirements determination usually runs automatically as part of material requirements planning (MRP). The system checks for each item and each demand date what stocks and receipts are available in the respective planning period. Several details are decisive here:
- Stock quality: Only genuinely free stock is included in the calculation. Blocked, reserved, or already otherwise allocated quantities do not reduce – or only partially reduce – the net requirement, depending on the system configuration.
- Receipt reliability: Open purchase orders or production orders count as planned receipts. Whether a receipt actually arrives on time depends on delivery date quality. Delayed receipts can result in the calculated net requirement having been set too low.
- Combined planning: Many companies plan on the basis of both firm customer orders and sales forecasts. How forecast and order backlog are offset against each other significantly influences the gross requirement and therefore also the net requirement.
The result of the net requirements calculation forms the basis for purchase order proposals or production orders. Lot-sizing methods and safety stocks are typically applied only after the net requirements determination in order to generate a concrete order proposal from the calculated net requirement.
What matters in planning?
The quality of the net requirement stands or falls with the data foundation. Inaccurate inventory management, unposted goods receipts, or outdated planned orders lead to the net requirement being systematically over- or underestimated. For this reason, clean inventory management is an essential prerequisite for reliable planning results. In addition, the planning logic should be transparently documented so that planners can understand and correct deviations between the system proposal and actual demand. Vendor- and system-specific differences in the calculation – for example in the handling of partial reservations or in the scheduling of receipts – can noticeably influence the results.
Related terms
- Absatzplanung
Sales planning refers to the systematic forecasting of future sales volumes for defined products, regions, or channels. It forms the foundation for all downstream planning processes in production, procurement, and logistics.
- Absatzprognose
The sales forecast estimates future demand for products or items over a defined period. It forms the basis for inventory, capacity, and procurement planning in logistics and purchasing.
- Bedarfsermittlung
Requirements planning refers to the systematic process by which an organization's future material or goods requirements are determined in terms of quantity and timing. It forms the basis for inventory management, procurement, and warehouse planning.
- Bedarfsmenge
The demand quantity refers to the quantity of an item required at a specific point in time or within a planning period. It forms the basis for ordering decisions, inventory planning, and production planning.
- Bedarfsplanung
Demand planning refers to the systematic process by which a company determines what quantities of materials, goods, or resources are needed and when. It forms the foundation for inventory management, procurement, and warehouse planning.
- Beschaffungsplanung
Procurement planning refers to the process by which a company systematically determines which materials or goods need to be sourced, in what quantities, at what time, and from which suppliers.
- Bestandsführung
Inventory management refers to the system-supported administration and continuous updating of all warehouse and material stocks within a company. It forms the basis for planning, procurement and accounting – and ensures that the book inventory and physical inventory are in agreement at all times.
- Bestandsmanagement
Inventory management refers to the systematic planning, control, and monitoring of stock levels across the entire supply chain. The goal is to ensure delivery capability while keeping capital commitment and warehousing costs within economically viable limits.
- Disposition
Disposition refers to the operational planning and control of resources, quantities, and orders in logistics – for example in transport or materials disposition. It encompasses capacity assignment, scheduling, prioritization, and response to disruptions.
- Dispositionssoftware
Dispatching software is a software solution for the operational planning, control, and optimization of transports, routes, and resources in logistics. It helps dispatchers efficiently coordinate orders, capacities, and time windows.