Dead Stock: How to Identify It, Clear It, and Stop It Accumulating
Dead stock is inventory that has not sold in 90+ days and shows no sign of picking up velocity. Every unit of dead stock ties up working capital, incurs storage costs, and depreciates in value. Identifying it early and clearing it systematically — even at a loss — is almost always better than waiting for it to sell at full price.
What dead stock costs you#
Dead stock is not just inventory that is not making money — it is inventory that is actively costing you money. The direct costs: warehouse storage fees (typically £0.30-0.80 per unit per month for a 3PL, or the opportunity cost of the warehouse space you own), insurance on the value of the inventory, and for Amazon sellers, long-term storage fees (charged on inventory stored over 365 days at Amazon FBA, currently £6.90 per cubic foot). The indirect cost: every pound tied up in dead stock is a pound not available to invest in faster-moving, higher-margin inventory. A business with £80,000 of dead stock is effectively carrying an £80,000 loan with no return.
How to identify dead stock before it becomes a problem#
Dead stock accumulates gradually, which is why it is often not noticed until it is substantial. The early identification process requires a weekly or monthly report of inventory sell-through rate by SKU. Sort your inventory by units sold in the last 30 days divided by total units on hand. SKUs with sell-through rates below 5% per month — meaning at current velocity it will take more than 20 months to sell the existing stock — are candidates for a markdown or discontinuation decision. A more sophisticated approach adds the weeks of cover metric: units on hand divided by average weekly sales rate. Any SKU with more than 26 weeks of cover is entering dead stock territory.
The markdown decision: when and how much#
The common founder instinct is to avoid marking down stock — it feels like admitting defeat and destroying margin. The financial reality is different. If a product is going to be at current velocity for 18 more months, the total storage cost plus the working capital cost of holding it will often exceed the margin loss from a meaningful markdown that clears it in 4 weeks. Calculate: what is the total holding cost of this stock over the expected clearance period at current velocity versus the margin given up by a specific markdown that would clear it in 4 weeks. In most cases, the markdown produces the better financial outcome when the full holding cost is included.
Clearance strategies that protect margin perception#
Outright price reduction: most direct, highest clearance rate. Risk: trains customers to wait for sales. Bundle with fast-moving products: create a bundle that includes the slow-moving item alongside a popular product at a combined price that represents value — the slow mover is effectively subsidised by the fast mover. B2B or bulk sale: many slow-moving consumer products can be sold in bulk to trade buyers, market stalls, or discount retailers at a discounted but reasonable per-unit price. Donation or write-off: for very low-value items where clearance costs exceed the sale value, donating to a charity (which may be tax-deductible) or writing off the inventory removes the storage cost.
How to stop dead stock accumulating#
Dead stock is almost always a buying problem before it is an inventory problem. It accumulates when: buyers order based on optimistic assumptions rather than data, reorder quantities are based on minimum order quantities rather than demand forecasts, new products are launched with excessive initial inventory without demand validation, and end-of-season clearance is not executed aggressively enough to prevent dead stock entering the new season. The solution is a systematic open-to-buy discipline — only ordering what is justified by demand forecasts, with clear markdown triggers at defined sell-through thresholds.
AskBiz dead stock identification and alerting#
AskBiz monitors your inventory sell-through rates weekly and flags SKUs that are entering dead stock territory — defined as more than 26 weeks of cover at current velocity. It calculates the holding cost of the dead stock position (storage fees plus working capital cost) and compares this to the margin cost of a specific markdown — showing you the financially optimal clearance decision. Ask it: which products have more than 6 months of stock cover at current sales velocity, what is the total value of my slow-moving inventory defined as over 20 weeks of cover, what markdown would be needed on Product X to clear the current stock position in 8 weeks.
People also ask
What is dead stock in retail and eCommerce?
Dead stock is inventory that has not sold in 90+ days and shows no meaningful sales velocity. It ties up working capital, incurs storage costs, and typically depreciates in value — making early identification and clearance more profitable than holding and hoping.
How do I identify dead stock in my inventory?
Identify dead stock by calculating weeks of cover for each SKU: units on hand divided by average weekly sales rate. SKUs with more than 26 weeks of cover are in slow-moving territory. SKUs with no sales in the last 60-90 days are technically dead stock.
What is the best way to clear dead stock?
Clear dead stock through calculated price markdowns (comparing markdown margin cost to holding cost), product bundles that include slow-movers alongside fast-movers, bulk B2B sales to trade buyers or discount retailers, or donation for items where sale value is below clearance cost.
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