Dead stock ties up cash you could spend elsewhere, and stockouts lose sales you never get back. Both problems come from the same root: you order without a system. This article gives you a working method to control inventory in a trading business, so you carry the right items in the right quantity and free up cash that is currently sitting on your shelves.

Why dead stock and stockouts happen at the same time

It feels contradictory to have too much of some items and none of others, but it is the normal result of treating all products equally. When every SKU gets the same attention, the fast sellers run dry while slow movers pile up. The cause is usually one of three habits: ordering by gut feeling, ordering in supplier-driven bulk to chase a discount, or never reviewing what actually sells.

The nature of the problem is that inventory is frozen money. A box on the shelf is cash you have already paid for but cannot use. So the goal is not “more stock” or “less stock” but faster stock that turns back into cash quickly.

Start with ABC analysis

ABC analysis sorts your items by how much of your revenue or cost they represent. It is a real, long-standing inventory practice, and it works because sales are almost never spread evenly.

  • A items: the small group that drives most of your revenue. Watch these closely and never let them run out.
  • B items: moderate contributors. Review them on a regular but lighter schedule.
  • C items: the long tail of low-value or slow items. Keep minimal stock and question whether to carry them at all.

Pull twelve months of sales, rank items by revenue, and mark where the cutoffs fall. You will usually find a short A list deserves most of your management time.

Measure inventory turnover

Inventory turnover tells you how many times you sell and replace your stock in a period. The standard formula is cost of goods sold divided by average inventory value. A higher number means cash cycles faster.

You can also express it as days of inventory: 365 divided by turnover. If a product line shows 120 days, you are holding roughly four months of stock. Whether that is good depends on lead time and shelf life, so compare each category against its own supply reality, not one blanket target. What matters is the trend: if days keep rising, dead stock is building.

Set reorder points instead of guessing

A reorder point is the stock level that triggers a new order. A simple, honest version is: average daily sales multiplied by supplier lead time in days, plus a safety buffer for demand swings and late deliveries.

For an item selling 10 units a day with a 7-day lead time, you reorder at around 70 units plus a buffer. This removes emotion from ordering and prevents both the panic buy and the forgotten SKU.

A real scenario

A distributor stocked 400 SKUs and complained about cash being tight despite steady sales. An ABC review showed about 15% of items produced most of the revenue, while nearly a third had not sold in six months. They cleared the dead C items through discounts and bundles, stopped reordering them, and set reorder points on the A list. Within two quarters the warehouse held less total stock but fewer stockouts, and the recovered cash covered a supplier prepayment that earned a better price. Nothing exotic happened; they just stopped treating all items the same.

Common mistakes and how to fix them

  • Chasing volume discounts blindly: a 5% discount is a loss if the stock sits for a year. Fix: compare the discount against your holding cost and turnover before buying deep.
  • Never writing off dead stock: holding it hoping it sells “someday” hides the loss. Fix: set a rule, for example no sale in 6-9 months triggers a clearance decision.
  • One safety stock number for everything: fix by sizing buffers to each item’s demand variability and lead time.
  • Trusting the system count without counting: fix with cycle counting, checking a slice of items each week rather than one chaotic annual count.

Action checklist

  • Export 12 months of sales and run an ABC ranking.
  • Calculate turnover and days of inventory per category.
  • Flag every item with no sales in 6+ months for clearance.
  • Set reorder points and buffers for A and B items.
  • Start weekly cycle counts on A items.
  • Review the numbers monthly and adjust.

Conclusion and next step

Inventory control is not about ordering less; it is about ordering deliberately. Your next step is small and concrete: run the ABC analysis this week and identify your dead C items. That single list usually reveals cash you can recover within a month.

FAQ

How often should I run ABC analysis?

Once a quarter is enough for most trading businesses. Demand patterns shift with seasons and new products, so a stale ranking slowly stops matching reality.

What counts as dead stock?

There is no universal rule. A practical threshold is any item with no sales for a period longer than its normal replenishment cycle, often 6-9 months for general goods. Set the threshold that fits your shelf life and cash needs.

Is high inventory turnover always better?

Not always. Very high turnover can mean you are constantly short and losing sales to stockouts. The aim is a healthy balance where cash cycles fast without leaving customers empty-handed.

Do I need software to do this?

No. ABC analysis, turnover, and reorder points can all be done in a spreadsheet. Software helps once volume grows, but the discipline matters more than the tool.

References

  • ASCM (Association for Supply Chain Management, formerly APICS) – established body of practice for inventory and supply chain concepts including ABC analysis and safety stock.