Dead stock is inventory that has stopped selling and is unlikely to sell at full price in the future. It sits in your warehouse or a fulfillment center, ties up cash you already spent, and quietly accumulates storage fees, insurance costs, and markdown risk every month it stays on the shelf.
One note before we go further. In sneaker and streetwear resale, "deadstock" means something different: a brand-new, never-worn item, often vintage, which makes it more valuable, not less. If that is what you searched for, this is not that article. Here we are talking about the inventory management meaning, where dead stock is unsold product draining cash from an ecommerce business.
For sellers, that second meaning is the expensive one. Most guides treat dead stock as a merchandising problem you fix with a clearance sale. It is more useful to treat it as a finance problem, because the real damage shows up in your working capital, your margins, and eventually your books.
Dead stock meaning in inventory management
In inventory terms, dead stock (also called dead inventory or obsolete inventory) is product that has had no sales, or close to none, over a defined window and has no realistic path back to normal velocity. It is distinct from slow-moving stock, which still sells but below plan, and from seasonal stock, which is expected to pause and resume.
The practical test is a days-without-sale threshold. Common practice is to review anything with no sales in 90 days, treat 180 days as a serious warning, and classify most product categories as dead at 365 days. Fashion and trend-driven goods hit the wall much faster than evergreen consumables, so the threshold should vary by category.
How much is normal? Commonly cited guidance puts a healthy ceiling at roughly 5 to 10 percent of total inventory value. If a fifth of your stock has not moved in six months, you do not have a merchandising issue. You have a capital allocation issue.
Dead stock accounting sits inside the broader discipline of keeping accurate inventory records, landed costs, and margins. For the full picture, see our complete guide to ecommerce accounting.
What dead stock actually costs per month
The purchase price is a sunk cost. The ongoing bleed is the part sellers underestimate, because it never arrives as one invoice. It arrives as storage fees, forgone return on cash, insurance, and the steady erosion of what the product could still sell for.
Industry rules of thumb put total inventory carrying costs at 20 to 30 percent of inventory value per year. Dead stock sits at the high end of that range because it also carries obsolescence risk. As of 2026, here is an illustrative monthly carrying cost for $20,000 of dead stock at cost, using mid-range assumptions:
| Cost component | Monthly cost | Basis (illustrative) |
|---|---|---|
| Storage space (3PL or FBA) | $250 | Pallet and cubic-foot fees on unsold units |
| Cost of capital | $167 | 10% annual return the cash could earn elsewhere |
| Insurance and handling | $33 | Roughly 2% of value annually |
| Obsolescence and markdown erosion | $400 | Resale value declining about 2% per month |
| Total monthly bleed | $850 | About 4.3% of inventory value per month |
At that rate, doing nothing costs about $10,200 a year on a $20,000 problem. Recovering even 40 cents on the dollar today beats holding for a full-price sale that never comes. This is why finance teams frame dead stock decisions as a comparison between recovery value now and carrying cost plus recovery value later, not as a question of pride in the original retail price.
Dead stock also drags on your cash conversion cycle. Cash that should cycle from inventory to sales to reorders in 60 or 90 days instead sits frozen for a year. For a growing brand, that frozen cash is the reorder you could not place on your best-selling SKU.
What causes dead stock
Most dead stock traces back to a handful of decisions. Over-ordering is the most common: a bulk discount or a fear of stockouts pushes the order quantity past real demand. The EOQ formula exists precisely to keep order sizes tied to demand and holding costs rather than to gut feel.
Forecasting misses are the second driver. Demand shifted, a trend faded, a competitor undercut the price, or a marketplace algorithm buried the listing. Third is product-level failure: quality issues, bad reviews, or a poor listing that never converted. Fourth is operational drift, such as duplicate SKUs, mislabeled variants, and inventory that fell out of the system and was never marketed at all.
The pattern worth noticing is that every cause was visible in the data before the stock went dead. Sales velocity slowed for weeks before it stopped. A disciplined reorder point process catches this early, because the reorder trigger simply stops firing on a dying SKU while you still have time to act.
The accounting treatment: write-downs and write-offs
This is the part most dead stock guides skip, and it is where the losses become official. Under GAAP, inventory is carried at the lower of cost or net realizable value. When the amount you can realistically sell a product for, minus the costs to sell it, falls below what you paid, you are required to write the inventory down to that lower value.
A write-down flows through your income statement, typically as an addition to cost of goods sold. Say you hold $20,000 of dead stock and determine its net realizable value is $8,000. The $12,000 write-down hits COGS in the current period, which compresses your gross margin even though no sale occurred. A write-off is the same mechanism taken to zero, used when the inventory has no recoverable value and gets destroyed or scrapped.
There is a tax dimension too. Written-down or written-off inventory generally reduces taxable income, and donated inventory can generate a deduction based on its basis. The rules depend on your entity type and accounting method, so the specifics belong in a conversation with your tax preparer. The financial point stands regardless: recognizing the loss on time keeps your margins honest and often recovers some value through the tax line.
Timing matters more than most founders expect. Brands that defer write-downs to protect a quarter's gross margin are overstating their inventory asset and their equity. Lenders and acquirers check inventory aging reports for exactly this reason, and a balance sheet padded with dead stock rarely survives diligence.
How to get rid of dead stock
Getting rid of dead stock is a recovery-rate decision. Each exit route returns a different fraction of cost, and the right choice depends on how far gone the product is. A rough decision ladder, ordered from highest recovery to lowest:
- Discount and promote (60 to 90 days without sale). Markdowns, flash sales, and end-of-season clearance. Acting early is the difference between selling at 25 percent off and liquidating at 75 percent off.
- Bundle (90 to 180 days). Pair the slow SKU with a proven seller at a combined price. Bundling preserves more margin than a straight markdown and can lift the average order value of the healthy product.
- Change the channel (90 to 180 days). Move stock to eBay, outlet marketplaces, or a different region. A product dead on one channel is sometimes merely mispriced or invisible on another.
- Liquidate (180 days and beyond). Sell in bulk to liquidation buyers, typically for 10 to 40 cents on the dollar. It feels painful and is usually still better than twelve more months of carrying costs.
- Donate or write off (when recovery is below the cost of selling). Donation may carry a tax deduction. Destruction plus a write-off at least stops the fee meter and cleans up the books.
Amazon sellers face an accelerated version of this ladder. FBA charges an aged inventory surcharge that begins once units have been stored 181 days and escalates steeply past a year, on top of regular monthly storage fees. Those fees can exceed what a low-priced unit will ever recover, which means removal or liquidation math should be run at the 150-day mark, not the 300-day mark. Our ecommerce fee calculators can help you model how storage and fulfillment fees stack up against a unit's remaining value.
Whatever route you choose, record the recovery against the SKU's true cost, including freight and duties. A liquidation that looks acceptable against invoice price can be a much deeper loss against landed cost.
Preventing dead stock: watch velocity, not averages
Prevention is mostly measurement. Dead stock hides inside blended numbers: a healthy overall inventory turnover figure and a decent blended gross margin can conceal a dozen SKUs that have not sold in months, because the winners average them away. The only reliable defense is per-SKU visibility into velocity, sell-through rate, and margin.
Three habits do most of the work. First, review an inventory aging report monthly, with every SKU bucketed by days since last sale. Second, size orders with EOQ logic and reorder points instead of round numbers and bulk-discount temptation. Third, run a regular product profitability analysis so that low-margin, low-velocity SKUs get cut from the catalog before the next purchase order, not after.
It also helps to plan inventory as a working capital line, not just a merchandising plan. Our working capital blueprint for ecommerce walks through how much cash a growing brand can safely leave sitting in stock.
Where Futureproof fits
Dead stock becomes a write-off when nobody is watching the numbers between purchase order and year-end. Futureproof's AI bookkeeper, Vic, keeps inventory-aware books that tie every SKU to its cost, fees, and sales velocity, so a product that stops moving shows up in your monthly numbers instead of surfacing in a painful year-end count. Margo, our FP&A agent, folds that into cash flow forecasts, so you can see what freeing up frozen inventory cash would do to your runway and reorder capacity.
Shopify and Amazon integrations are now in beta. If you want per-SKU truth in your books before dead stock becomes a write-down, join the ecommerce waitlist.
Frequently asked questions
What causes dead stock?
The main causes are over-ordering beyond real demand, inaccurate forecasting, fading trends or seasonality, product quality and listing problems, and operational errors like duplicate SKUs. Nearly all of them show up as slowing sales velocity weeks or months before the stock actually goes dead, which is why per-SKU velocity tracking is the best early warning system.
What is the difference between dead stock and slow-moving inventory?
Slow-moving inventory still sells, just below plan, and can often be fixed with pricing, marketing, or listing changes. Dead stock has effectively stopped selling and has no realistic path back to normal velocity. The distinction matters because slow movers justify investment while dead stock justifies an exit at the best available recovery rate.
Is dead stock tax deductible?
Generally, yes, once the loss is recognized. Writing inventory down to net realizable value, writing it off entirely, or donating it typically reduces taxable income, and donations can carry a deduction based on the inventory's basis. The details depend on your entity type and accounting method, so confirm the treatment with your tax preparer before year-end.
What percentage of dead stock is normal?
Commonly cited guidance treats roughly 5 to 10 percent of total inventory value as a tolerable ceiling for dead and at-risk stock. Above that, carrying costs and write-down exposure start to distort margins and tie up meaningful working capital. Category matters as well, since fashion and trend goods age far faster than evergreen products.
How long before inventory is considered dead stock?
Most operators flag SKUs with no sales in 90 days, escalate at 180 days, and classify stock as dead at 365 days. Amazon FBA compresses that timeline, because aged inventory surcharges begin at 181 days in storage, which often makes 150 days the practical deadline for a liquidation decision.
