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Dead Stock Calculator — Find Hidden Inventory Waste

Q: What is dead stock?

Dead stock (also called obsolete inventory or dead inventory) is merchandise that has not sold in a long period of time — typically 90+ days — and is unlikely to sell at full price. It ties up working capital, consumes warehouse space, and often has to be liquidated at a loss. Dead stock is different from slow-moving stock (60-89 days without a sale), which can sometimes be revived with promotions or bundling.

Q: How do I calculate dead stock value?

Dead stock value = Quantity on hand × Unit cost. For each SKU, multiply the number of units you're holding by what you paid for each unit. This gives you the capital tied up in that item. Sum across all at-risk SKUs to get your total dead stock exposure. This calculator does that math instantly and adds risk classification (Slow Moving = 60-89 days idle, Dead = 90+ days idle).

Q: What percentage of inventory is typically dead stock?

Industry benchmarks suggest 15-25% of a typical retailer or distributor's inventory value is tied up in slow-moving or dead stock at any given time. For businesses without systematic inventory monitoring, this can reach 30-40%. The goal is to keep dead stock below 5% of total inventory value through proactive management — regular cycle counts, demand-driven reordering, and automated alerts.

Q: What should I do with dead stock?

The four main options, in order of preferred outcome: (1) Bundle with fast-moving items to create value and move units without discounting the item directly. (2) Discount aggressively — a 50% margin recovery is better than 0%. (3) Return to supplier if you have a contractual right or ongoing relationship. (4) Liquidate through secondary markets, clearance channels, or donate for a tax write-off. The worst option is to hold indefinitely — carrying costs (storage, insurance, capital cost) typically run 20-30% of inventory value annually.

Q: What is the difference between slow-moving and dead stock?

Slow-moving inventory has had no sales for 60-89 days. It's at risk but may respond to promotions, bundling, or price adjustments. Dead stock has had no sales for 90+ days and is considered obsolete — it's unlikely to sell at full price without significant intervention. This calculator classifies items into Healthy (under 60 days), Slow Moving (60-89 days), and Dead (90+ days) so you can prioritize your response.

Q: How can I prevent dead stock?

The most effective prevention strategies are: (1) Demand-driven purchasing — use historical sales data and forecasts to set reorder quantities, not gut feel. (2) ABC analysis — focus tight inventory management on A-items, allow wider tolerance on C-items. (3) Automated slow-mover alerts — get notified when a SKU hasn't sold in 30 days so you can act before it becomes dead stock. (4) Shorter reorder cycles — smaller, more frequent orders reduce overstock risk. SupplyChainStack's Demand Forecast Engine automates all of this.

Enter your SKUs and instantly see how much capital is frozen in dead and slow-moving inventory — before it costs you more.

Up to 10 SKUs at once

Risk classification per SKU

Action recommendation per item

Industry benchmark comparison

Dead Stock Calculator

Enter up to 10 SKUs — calculation is instant, no login needed

Have a spreadsheet? Enter data for each SKU below. Use "Days since last sale" — or pick an exact last-sale date and we'll calculate it. Load sample data →

* Dead stock value = Quantity × Unit Cost. Risk: 🟡 Slow Moving = 60–89 days idle, 🔴 Dead = 90+ days idle. Use for planning purposes — consult your inventory system for operational data.

Dead Stock Analysis

Your Inventory vs. Industry Benchmarks

Product / SKU	Qty on Hand	Unit Cost	Dead Stock Value	Days Idle	Risk Level	Recommendation

Inventory Value Breakdown — Dead Stock vs. Healthy Inventory

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AI-generated estimate. Not professional advice. Learn more

What Is Dead Stock?

Dead stock is inventory that hasn't sold in 90+ days and is unlikely to move at full price. It's capital sitting on your shelves — paying warehouse rent, tying up cash, and accruing carrying costs — while generating zero revenue.

For most businesses, dead stock is invisible until cash flow becomes a problem. By then, the damage is done: you've been paying to store items you can't sell, and your only exit is a liquidation sale or a write-off. This calculator surfaces that hidden liability before it becomes a crisis.

Industry benchmark: The average retailer has 15–25% of inventory value tied up in slow-moving or dead stock. For operations without automated monitoring, this often exceeds 30%. If your total inventory is worth $500,000, that's potentially $75,000–$150,000 frozen in non-productive assets.

Dead Stock vs. Slow-Moving Inventory

Not all stagnant inventory is the same. There's a meaningful difference between a SKU that's cooling off and one that's clinically dead:

Category	Days Since Last Sale	Risk Level	Typical Action
✅ Healthy	Under 60 days	Low	Monitor — normal inventory cycle
🟡 Slow Moving	60–89 days	Medium	Bundle, discount 10–20%, increase visibility
🔴 Dead Stock	90+ days	High	Liquidate, return to supplier, write down

How to Calculate Dead Stock Value

The formula is straightforward: Dead Stock Value = Quantity on Hand × Unit Cost. The unit cost should be what you paid for the inventory (COGS basis), not the retail price. This gives you the actual capital at risk — the money you've already spent that isn't working for you.

What the formula doesn't capture is the full cost of holding that inventory: warehouse space, insurance, opportunity cost of capital, and the risk of further depreciation. Industry estimates for total carrying cost run 20–30% of inventory value annually. An item sitting idle for a year effectively costs you its purchase price plus 20–30% more.

Example: You have 200 units of a seasonal item at $15/unit cost (= $3,000) that hasn't sold in 110 days. Dead stock value = $3,000. But carrying cost at 25% annually = $750/year. After another 6 months, you've spent $3,375 to hold an asset that's now harder to sell than it was 6 months ago.

Dead Stock Reduction Strategies

Bundle with fast-movers: Pair a dead item with a popular product and sell as a kit. Moves units without training customers to expect discounts on that SKU independently.
Flash discount (time-limited): A 24–48 hour promotion at 30–50% off creates urgency. Better to recover 50% margin than 0%.
Return to supplier: If you have a return agreement, even partial credit is better than full write-off. Worth a call before liquidating.
Secondary market liquidation: Sell through closeout channels, eBay lots, or B2B liquidation platforms. Recovery rates vary from 10–60% of cost.
Donation / tax write-off: For perishable goods or items with high carrying cost, donating and taking the tax deduction may yield a better net outcome than continued storage.

How to Prevent Dead Stock

Prevention is far cheaper than cure. The fundamental causes of dead stock are over-purchasing, inaccurate demand forecasting, and lack of visibility into inventory aging.

Set aging alerts: Flag items at 30 days of no sales, not 90. Intervening early (a small promotion, a positioning change) is far less costly than liquidating at 90 days.
Demand-driven reorder quantities: Use actual sales velocity to set purchase quantities — not gut feel, not supplier minimums. If a SKU sells 10 units/month, don't order 500.
Tighter minimum order negotiations: Push back on supplier MOQs. A slightly higher per-unit cost on smaller orders is often cheaper than the carrying cost of excess inventory.
Regular inventory reviews: Monthly ABC analysis — A items sell fast, C items are the dead stock candidates. Allocate your attention accordingly.

Ready to automate this across hundreds of SKUs? → See SupplyChainStack inventory monitoring →

Frequently Asked Questions

What is dead stock?

Dead stock (also called obsolete inventory) is merchandise that has not sold in a long period of time — typically 90+ days — and is unlikely to sell at full price. It ties up working capital, consumes warehouse space, and often has to be liquidated at a loss. Dead stock is different from slow-moving stock (60–89 days without a sale), which can sometimes be revived with promotions or bundling.

How do I calculate dead stock value?

Dead stock value = Quantity on Hand × Unit Cost. Use your cost basis (what you paid), not the retail price. This gives you the actual capital tied up. Sum across all at-risk SKUs for your total dead stock exposure. This calculator does that math instantly for up to 10 SKUs and classifies each by risk level.

What percentage of inventory is typically dead stock?

Industry benchmarks suggest 15–25% of a typical retailer's inventory value is tied up in slow-moving or dead stock at any given time. For businesses without systematic inventory monitoring, this can reach 30–40%. The goal is to keep dead stock below 5% of total inventory value through proactive management — regular cycle counts, demand-driven reordering, and automated alerts.

What should I do with dead stock?

Four main options, in order of preferred outcome: (1) Bundle with fast-moving items to create value without direct discounting. (2) Discount aggressively — recovering 50% margin beats 0%. (3) Return to supplier if contractually possible. (4) Liquidate through secondary markets or clearance channels. Carrying costs (storage + capital) typically run 20–30% annually, so holding indefinitely is the worst financial outcome.

What is the difference between slow-moving and dead stock?

Slow-moving: No sales for 60–89 days. At risk but may respond to promotions or bundling. Intervention now is cheap. Dead stock: No sales for 90+ days. Considered obsolete — unlikely to sell at full price without significant intervention. The earlier you catch a slow-mover, the more options you have. This calculator classifies items into Healthy (<60 days), Slow Moving (60–89 days), and Dead (90+ days).

How can I prevent dead stock?

The most effective prevention: (1) Demand-driven purchasing — use historical sales data to set order quantities, not gut feel. (2) Automated slow-mover alerts — get notified at 30 days of no sales, not 90. (3) Tighter MOQ negotiations — smaller, more frequent orders reduce overstock risk. (4) Monthly ABC analysis — identify C-items before they become dead stock. SupplyChainStack's Demand Forecast Engine automates all of this.

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