Inventory & Working-Capital Control
An intuitive, interactive course on inventory and working-capital control for inventory controllers, warehouse and operations managers, and supply-chain finance. Learn why inventory is cash tied up on a shelf, size orders with the economic order quantity (EOQ), set reorder points and safety stock for a target service level, measure inventory turnover and days inventory outstanding, prioritise SKUs with ABC analysis, and weigh the cost of carrying stock against the cost of a stockout. Every lesson pairs plain-language explanations with precise curves, worked examples, a live self-checking simulator, and practice you can verify yourself. All figures are illustrative synthetic teaching examples.
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Inventory as Cash
Why inventory is cash on a shelf: the cash it ties up, the cash-conversion cycle, and the tug-of-war between carrying cost and stockout cost.
The EOQ Model
The economic order quantity: the formula that balances ordering cost against holding cost, the U-shaped total-cost curve, and where its assumptions hold or break.
Reorder Points & Safety Stock
When to reorder: reorder-point basics, demand uncertainty, service level and the z-score, and how to size safety stock.
Turnover, Days & the Cash Cycle
Measuring how fast inventory moves: inventory turnover, days inventory outstanding, and how turnover links back to the cash cycle.
ABC Analysis & Service Levels
Not every SKU deserves equal attention: ABC classification, cycle counting, and trading service level against cost.
The Stockout Trade-off
Putting it together: expected stockout cost, the optimal policy, and when clearance discounting beats holding on.
New lessons are added continuously. Every lesson pairs plain-language explanations with a live, self-checking cost-control widget.