4.2 Inventory Management – Managing Inventory
What is Inventory Management? 📦
Think of inventory like the pantry in your home. It holds all the food (products) you need to keep your family (customers) happy. In business, inventory is the goods you keep on hand to meet customer demand without overstocking.
Why Supply Chain Management Matters 🚚
Supply chain management is the backbone that keeps the pantry stocked at the right time. It involves planning, sourcing, producing, and delivering goods. Good supply chain practices reduce costs, improve service levels, and keep the business running smoothly.
Key Inventory Concepts
- Stock Keeping Unit (SKU) – a unique identifier for each product.
- Reorder Point (ROP) – the inventory level that triggers a new order.
- Safety Stock – extra inventory to protect against uncertainty.
- Lead Time – the time between placing an order and receiving it.
- Carrying Cost – the cost of holding inventory (storage, insurance, spoilage).
Calculating the Reorder Point (ROP) 📈
Use the formula:
\$ROP = (U \times L) + SS\$
Where:
- \$U\$ = Average daily usage
- \$L\$ = Lead time (days)
- \$SS\$ = Safety stock
Example:
\$U = 10\$ units/day, \$L = 5\$ days, \$SS = 20\$ units
\$ROP = (10 \times 5) + 20 = 70\$ units
Inventory Management Steps (🔄)
- Identify SKUs and classify them.
- Determine demand patterns and calculate average usage.
- Set lead times and safety stock levels.
- Calculate ROP and set reorder triggers.
- Monitor inventory levels and adjust as needed.
- Review carrying costs and seek cost‑saving opportunities.
Benefits of Good Inventory Management 🌟
| Benefit | Why It Matters |
|---|
| Reduced Stockouts | Customers stay happy when products are available. |
| Lower Holding Costs | Less money tied up in unsold goods. |
| Improved Cash Flow | Cash is free to invest elsewhere. |
Exam Tips for 4.2 Inventory Management
- Remember the ROP formula and be ready to plug in numbers.
- Use the analogy of a pantry to explain why safety stock is important.
- Show how supply chain decisions affect inventory levels.
- Include a simple example calculation in your answer.
- Highlight the benefits of good inventory management in bullet points.