Dead Stock: How to Identify and Clear Excess Inventory

What is dead stock?

Dead stock — also called obsolete inventory, excess stock, or dead inventory — is any product that has stopped selling and is unlikely to sell at or near its original purchase price without significant intervention. It sits in your warehouse occupying shelf space, tying up cash, and accruing carrying costs month after month.

Dead stock is different from slow-moving stock. Slow-moving inventory still sells, just below its expected velocity. Dead stock has effectively stalled — it may have sold zero units in 90, 180, or even 365 days. The distinction matters because the appropriate response is different: slow-moving stock may just need better placement or a small discount, while dead stock typically requires a more aggressive clearance strategy.

Common causes of dead stock include:

• Over-ordering: Buying too many units to hit a minimum order quantity (MOQ) or to get a better per-unit price, without confident demand to absorb the quantity.
• Trend products: Items that were popular for a short period but have since been superseded.
• Seasonal items: Christmas decorations bought in October that didn't fully sell through by December.
• Discontinued lines: Products you no longer actively sell but still have stock of.
• Demand forecasting errors: Misjudging how popular a new product would be.
• Supplier push: Being sold a large quantity by a supplier offering an attractive deal.

The true cost of dead stock

Most sellers look at dead stock and see the purchase price. The real cost is much higher. Carrying costs — the ongoing expenses of holding inventory — typically run at 20–30% of inventory value per year for a small ecommerce business. These include:

• Warehouse space: Whether you rent a unit or store from home, dead stock is taking up space that productive stock could use.
• Insurance: Stock insurance premiums cover everything in your warehouse, including items that aren't generating revenue.
• Financing cost: If you bought the stock with a business loan, credit card, or overdraft, you're paying interest on units that aren't selling.
• Opportunity cost: The cash tied up in dead stock could have been used to buy faster-moving products.
• Labour: Time spent counting, moving, and managing dead stock is time that could be spent on live inventory.

A worked example: you have 200 units of a product you paid £8 each for — £1,600 of stock. At a 25% carrying cost rate, you're paying £400 per year to hold it. After 18 months of no sales, the carrying cost alone exceeds the purchase price. And if the product is genuinely unsellable, you'll eventually write off the full £1,600.

The lesson: dead stock costs you more the longer you hold it. Clearing it at a loss is almost always better than holding it.

How to identify dead and slow-moving stock

The first step is pulling a report that shows stock age alongside sales velocity. You're looking for products where the stock age is high relative to how quickly they sell. Key metrics to look at:

• Days of inventory on hand (DOH): (Current stock quantity ÷ average daily sales). A product with 500 units and average daily sales of 2 has 250 days of stock — that's likely too much.
• Last sale date: Filter for products with no sale in 90, 180, or 365 days depending on your category. A product that hasn't sold in 180 days is almost certainly dead stock.
• Stock turn rate: How many times per year does your inventory cycle through? Most healthy ecommerce businesses target 4–8x per year. Products turning less than 1x annually are candidates for clearance.
• Revenue generated in last 90 days: Sorting by lowest revenue quickly surfaces underperforming SKUs.

If you're using inventory management software like Salync, these reports are built in — you can filter by last sale date, stock age, or days of inventory to surface dead stock instantly. If you're working from spreadsheets, you'll need to pull your stock list and sales data and calculate these figures manually.

Using ABC analysis to classify inventory

ABC analysis divides your inventory into three categories based on their contribution to revenue:

• A items: Your top 10–20% of SKUs by revenue. These are your stars — fast-moving, high-value, and should always be in stock.
• B items: The middle 30–40% of SKUs. Solid performers that contribute meaningfully but aren't your top sellers.
• C items: The bottom 40–50% of SKUs that contribute very little revenue. Most of your dead stock will be found here.

Dead stock lives in the C category, and often in a sub-category some businesses call D items — products that have generated zero revenue in the last 90 days. Once you've classified your inventory using ABC analysis, focus your clearance efforts on C and D items.

The goal isn't to eliminate all C items — some slow movers are still worth stocking — but to identify the ones where the carrying cost exceeds any realistic future return.

Strategies to clear dead stock

Once you've identified dead stock, you have several options. The right approach depends on the type of product, how much stock you have, and how badly you need to recover cash.

1. Discounting on your existing channels

The simplest starting point is reducing the price on eBay, Amazon, Shopify, or wherever you sell. A 20–30% discount often moves stock that's been sitting at full price. Be careful not to go straight to your maximum discount — start moderate and increase if needed, rather than training buyers to wait for bigger cuts.

2. Bundle it with faster-moving stock

Pairing a dead stock item with a popular product as a bundle can move both. The bundle gets a combined price that feels like a deal to the buyer, and your dead stock moves without needing to slash its standalone price. For example, if you sell phone cases and have dead stock in a specific colour, bundle it with a popular brand of screen protector.

3. List on clearance channels

Clearance marketplaces like B-Stock, Liquidation.com, or even eBay under a separate clearance account allow you to move large quantities quickly, usually at cost price or below. You'll take a loss, but you'll recover cash and free up warehouse space.

4. Sell to other businesses (B2B)

Other retailers may buy your dead stock wholesale. Post on B2B platforms, contact competitors who sell complementary products, or reach out to trade buyers directly. You'll typically get a lower per-unit price, but you move the stock quickly in one transaction rather than trickling it out one sale at a time.

5. Return to supplier

Some suppliers have return programmes or will accept buybacks — especially if you have a strong ongoing relationship. You may take a restocking fee (10–20%), but recovering even 80% of cost is far better than a write-off. This works best for products you've recently ordered in excess.

6. Donate to charity

For products that genuinely cannot be sold, donating to a charity gives you a PR benefit and (in some cases) a tax deduction. The Charities Aid Foundation can help match product donations to relevant organisations. This is typically a last resort when other clearance options are exhausted.

7. Write it off

If the product is truly unsellable — damaged, obsolete, or has a liability attached — writing it off cleans your balance sheet and may generate a tax benefit. See the tax section below for how this works in the UK.

How to prevent dead stock building up

Clearance is expensive and time-consuming. Prevention is far better. The most effective practices:

• Set reorder points based on data, not gut feel: Use sales velocity, lead times, and safety stock calculations to determine how much to order. See our guide on how to calculate reorder points.
• Use smaller test orders for new products: Never go all-in on a new SKU without proof of demand. Order a small quantity first, test its velocity, then reorder confidently.
• Run dead stock reports monthly: Catching slow-moving stock at 60 days is much easier to fix than catching it at 365 days. Build a monthly review into your routine.
• Set automatic alerts for low sales velocity: Good inventory software will flag products that haven't sold in a defined period, so you don't have to manually hunt for them.
• Don't buy based on MOQ alone: Suppliers often set MOQs higher than you need. If you can't sell through the MOQ confidently, negotiate or find an alternative supplier.
• Liquidate faster: Most sellers wait too long to start clearing dead stock. The moment a product goes 60 days without a sale, start with a small discount. Don't wait until it's been sitting for 18 months.

Writing off dead stock for UK tax

Under UK tax rules (and IFRS/UK GAAP accounting standards), you must value closing stock at the lower of cost or net realisable value (NRV). If your dead stock is worth less than you paid for it, you can (and should) write it down to its current market value. If it's genuinely worthless, you can write it off entirely.

Practically, this means:

• If stock that cost you £5 per unit can only be sold for £2, you write the value down to £2. The £3 per unit difference is an allowable expense.
• If stock is completely unsellable (e.g., damaged beyond repair), you write it off entirely. The full cost becomes an allowable expense.
• Keep records: document which products were written off, why they became unsellable, and any attempts to sell or return them. HMRC may query large stock write-offs on a tax return.

Speak to your accountant about the timing of write-offs — it's generally better to recognise losses in the tax year they occur rather than carrying overvalued stock on your balance sheet.

Frequently asked questions

What counts as dead stock?

Dead stock is inventory that has not sold within a defined period — typically 90 to 180 days — and is unlikely to sell at full price. It includes discontinued products, seasonal items that didn't sell through, overstocked SKUs, and items made redundant by new product lines.

How do I calculate the cost of dead stock?

The true cost includes the purchase price of unsold units plus carrying costs — typically 20–30% of inventory value per year. This covers warehouse space, insurance, financing, and opportunity cost. For stock sitting for 12+ months, carrying costs can exceed the original purchase price.

Can I write off dead stock for tax purposes in the UK?

Yes. HMRC allows you to value closing stock at the lower of cost or net realisable value. If stock is genuinely worthless, it can be written off entirely as an allowable expense. Keep documentation explaining why the stock became obsolete and any clearance attempts made.

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

Slow-moving stock still sells, just below expected velocity. Dead stock has effectively stopped selling. The boundary is typically 90–180 days with no sales. Slow movers may need a small discount or better positioning; dead stock usually requires a clearance strategy or write-off.