Slow Moving Inventory - How To Deal with It?

Slow-moving stock refers to products that have a lengthier turnover and stay much longer in the fulfillment center or warehouse. Usually, such items are stored for at least three months because they’re harder to sell.

Many aspects can result in slow-moving inventory, for example, inaccurate forecasts, market slowdowns, or competitors’ strategies. So, you must evaluate your supply chain and marketing approach to identify such products and implement an effective action plan.

Slow-moving inventory lowers the bottom line and total sales and uses warehouse space that you might spare for better-selling goods. So, for Amazon sellers, finding ways to eliminate those types of products is vital.

In this blog post, we’ll explore the nature of slow-moving inventory and how sellers can identify and handle it.

How to Identify Slow-Moving ASINs?

So, what is slow-moving inventory? No single definition of slow-moving stock gives a bulletproof method to determine that an issue exists. For example, an Amazon business may flag stock as slow-moving when there is no problem. The following are some methods of determining slow-moving stock to pinpoint issues accurately and early.

Overstock

Too much inventory of a particular product can result from slow-moving stock. Companies can track it by monitoring how long merchandise has been in stock and/or monitoring absolute inventory levels. For instance, if an Amazon business has a contract where it purchases a fixed amount of some products at regular intervals, and its inventory rises over time, it can indicate that sales have slowed.

Holding costs

When a seller is spending more and more money on stock holding costs, that is a good sign of ordering too much. Sales might have reduced if holding costs grow, but the brand has not changed its ordering approach.

Inventory turnover

Stock turnover is a general financial metric that shows the speed with which a seller moves its inventory. Still, it is a measure that combines different product types and estimates everything in dollars. A proper inventory management service can calculate stock turnover for individual items, which will be a much clearer sign of what’s selling slowly and what’s not.

Average days to move inventory

Like inventory turnover, average days for selling inventory is usually a combined financial metric of limited use in spotting a specific item selling more slowly (unless the brand sells only one item). It calculates how much time, on average, it takes to get sales equal to the value of the stock. However, it might mean some goods sell out and get reordered multiple times while others do not even sell out once.

Why Is It Bad to Have Too Much Slow-Moving Inventory?

Holding too many products comes with costly challenges and consequences. Among the priciest are the following:

Lower AMZ IPI score

The AMZ Inventory Performance Index (IPI) indicates the overall efficiency of your inventory management within the FBA business. Amazon counts a unit as excess when it has more than 90 days of supply based on forecasted demand, and it measures your FBA sell-through rate as units shipped over the past 90 days divided by the average units on hand. So when you have too much stock on hand, your sell-through rate drops, signaling to the marketplace that your stock is not performing well. Therefore, you might get a lower IPI score, and Amazon uses your IPI score (along with sales history, forecasts, and fulfillment center capacity) to set your monthly FBA capacity limits.

Lower AMZ rankings

Many businesses on the platform follow the 80/20 rule: a small share of their products brings in most of the revenue. Slow-selling goods get less attention as they might have poorly optimized or outdated listings.

When a product listing or page is not well-optimized, it’s less likely to appear at the top of the marketplace’s search results, ending up in less traffic and lower sales. Thus, the merchandise is unsold, tying up your money in inventory holding costs.

Higher opportunity cost

In eCommerce, opportunity cost means the value of the stock you might have bought and sold instead of products sitting in your fulfillment center or warehouse. That is why you should put your AMZ excess stock on sale or liquidate it to enhance your sell-through rate and keep your opportunity cost low.

Storage limits are clogged with non-selling items

Amazon sets an FBA capacity limit for each storage type every month, and your on-hand inventory plus shipments on the way count against it. Once you exceed it, you can’t create new shipments. So more excess slow-moving products mean less Amazon FBA space for your best sellers, leading to stockouts. Lost sales, in turn, can lead to lower limits, because capacity limits also reflect your sales history, and you end up in a vicious circle of lower and lower limits that may be difficult to get back from.

Higher risk of merchandise obsolescence or deterioration

Most goods lose value over time, especially items that evolve very quickly, like various gadgets. While it is a good thing for the client who always wants the newest, it also signifies electronic items can promptly become obsolete or out of trend as soon as they enter their final life cycle phase.

Adverse effects on cash flow

If you can’t move your excess stock fast, you will need to pay unnecessary expenses on top of your general storage fees per month. And the more unsold stock you have at your Amazon warehouse, the more you need to pay. Furthermore, Amazon charges an aged inventory surcharge (formerly the long-term storage fee) on units stored for 181 days or longer. Under the 2026 US rates, it starts at $0.50 per cubic foot for items aged 181 to 210 days and jumps to $5.45 per cubic foot at 271 days. Items aged 366 to 455 days cost $6.90 per cubic foot or $0.30 per unit (whichever is greater), and items aged 456 days or more cost $7.90 per cubic foot or $0.35 per unit, so the charges add up quickly. Established Professional sellers who store at least 25 cubic feet and hold more than 22 weeks of supply (Amazon’s storage utilization ratio) also pay a storage utilization surcharge on top of the base fee. Besides, the 2026 US base monthly storage fee for standard-size items is $2.40 per cubic foot from October to December versus $0.78 from January to September, about 3.1 times higher (oversize: $1.40 versus $0.56, or 2.5 times), so keeping excess goods during Q4 will be painful.

How to Sell Slow-Moving Inventory?

Let’s discuss five effortless ways to increase your Amazon sales and shift your slow-selling FBA inventory.

Launch a sale

The most obvious way to liquidate your inventory is to have discounts on your excess and old stock. You will need to heavily discount your products to spur customer demand for such products. Think of providing discounts between 30-70%. Yes, it seems too much, and you might offer the goods at cost (or even a loss). However, these items should go! This way, you can leave your old and excess inventory in the past and look forward to the future. Efficiently notify your customers of your sales with different promotions. Amazon also offers two clearance routes of its own: Outlet deals, which carry no additional deal fee and are open to ASINs that have been in Amazon fulfillment centers for at least 90 days, and FBA Liquidations, where a liquidator buys your stock for about 5% to 10% of its value and Amazon deducts a processing fee and a 15% referral fee.

While a sale is an excellent way to bring clients to purchase, keeping the frequency of such heavy discounts in mind is essential. If you present too many sales within a year, they might lose their effectiveness and appeal.

Check for any improvements in your product listings

Sometimes the cause your inventory is not selling has everything to do with a non-optimized product page. Who wants to purchase something with a crummy image or a poor description online? On some of your products, you may want to check for ways to enhance the images, keywords, title, etc.

Pro tip: Use SellerSonar to monitor your product listings. It alerts you when your listing content changes, when a listing is suppressed, and when a product is almost out of stock or sells out, so you can fix problems that slow down sales. SellerSonar doesn’t manage your inventory; it checks your listings every 4 hours on Pro, every 2 hours on Premium, and every hour on Business and Enterprise.

Bundle items

Apart from discounts, bundling is another popular pricing way used by sellers. It is when you sell a set of goods as a product bundle for a slightly reduced price than if they were sold separately. As you’re discounting stock, you can keep your profit margins on a sale.

Leverage selling channels

It differs by industry; however, brands can use additional sales channels to move inventory quickly. For example, by leveraging partners who have access to more clients. It is a good option if the slow-moving stock is due to advertising efforts not reaching enough or the proper audience. Such channels may include selling on other online marketplaces, collaborating with another company to give its clients a deal, or joining platforms that share deals.

Donate to get tax deductions

Let’s face it. If you cannot find a better way to move old inventory, giving it to some charity organization might be an excellent option. Many institutions are ready to take donations, and your brand reputation can benefit from helping people. In the US, Amazon enrolls sellers in its FBA Donations program by default, so eligible disposals go to select US charities, and the usual disposal fee applies (in 2026, from $0.84 per unit for standard-size items up to 0.5 lb). Check with your tax advisor whether a donation is deductible for your business.

Slow-Moving Stock: Final Thoughts

Managing your AMZ excess inventory requires balancing between cutting your potential losses and recovering what you can. While it is not good to get zero profits or lose any money, you also do not want to waste more resources and time on an item that becomes increasingly unprofitable when unsold for months after months.

The trick is to spot, track, and sell overstocked or slow-moving items before they become obsolete. Thus, you’ll still be able to boost your rankings and sell-through rate, avoid storage expenses, and recover some capital. And if it works out in your favor, you may even turn a slow seller into another best-selling item.

There has never been a better time to give Amazon listing monitoring software a go.