Retail losses hit 1 trillion dollars annually

Retailers succeed when the right products are available at the right time. When they are not, the cost is far greater than a missed sale. Too much stock locks up capital and often leads to markdowns. Too little stock sends customers elsewhere.

Returned products create another layer of transport, handling and processing costs before they can generate value again. The financial impact is substantial. A landmark IHL Group study published in 2015 estimated that retailers worldwide were losing $1.75tn each year through overstocks, out-of-stocks and preventable returns.

Inventory Distortion

Inventory distortion describes the gap between the stock a retailer expects to have available and the stock customers can actually buy. It is most visible through overstocks, stockouts and returns, but it is often driven by deeper issues such as inaccurate stock records, poor forecasting, fragmented systems and slow-moving supply chains.

The study attributed $471.9bn to overstocks, $634.1bn to out-of-stocks and $642.6bn to preventable returns. Those figures are now more than a decade old, but the challenge remains. More recent IHL research estimates that inventory distortion, measured through overstocks and out-of-stocks, will still cost the global retail industry around $1.7tn in 2026, equal to 6.2% of worldwide retail sales.

According to the US National Retail Federation, consumers returned merchandise worth $849.9bn in 2025, representing 15.8% of annual retail sales. These figures should not be combined because they measure different markets, time periods and types of economic impact.

Overstock: Where Inventory Distortion Begins

Retailers cannot afford to run out of popular products. Equally, they cannot afford to buy more than customers will purchase. When stock builds up faster than demand, working capital becomes tied up in inventory that is no longer generating value.

Warehouses fill, storage costs rise and products often have to be discounted to clear space for new ranges. In categories such as fashion, consumer electronics and grocery, where products quickly lose value, excess stock can erode margins long before it is eventually sold.

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Overstock rarely has a single cause. Small decisions made across forecasting, buying, merchandising and supply chain planning can combine to create a much larger problem. Long supplier lead times, inaccurate sales forecasts and changing customer behaviour all increase the risk that retailers will order too much stock.

Stockouts: The Cost of Poor Inventory Visibility

If overstock ties up capital in products customers are not buying, stockouts create the opposite problem.

IHL estimates that out-of-stocks account for almost two-thirds of global inventory distortion, making them the largest single source of lost value.

For customers, these distinctions are irrelevant. If they cannot buy the product, it is out of stock. This is why many retailers now view stockouts as a visibility problem rather than simply an inventory problem.

Retailers also need to know exactly where it is, whether it is available to sell, and how quickly it can reach the customer. That requires accurate data across stores, warehouses, ecommerce operations and fulfilment networks. As retail has become more connected, inventory has become more mobile.

Returns: Completing the Inventory Cycle

Returns are often viewed as a cost of doing business, particularly in ecommerce. In reality, they represent one of retail’s most complex operational processes. Every returned item must be transported, inspected, sorted and either returned to stock, refurbished, discounted or disposed of.

Until that process is complete, the product generates cost instead of value. The scale is significant. According to the US National Retail Federation, consumers returned merchandise worth $849.9bn in the US during 2025, equivalent to 15.8% of annual retail sales.

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The value of returned goods should not be confused with the cost of returns themselves. Many products can be resold. The real financial impact depends on how quickly retailers can recover their value. Speed matters because returned products are still inventory.

Every day that a saleable item remains in transit or waiting to be processed is another day it cannot generate revenue. Delays increase handling costs, reduce resale value and weaken stock availability. In fast-moving retail sectors, products may lose value long before they return to the shelf.

Retailers therefore face a difficult balance. Restrictive returns policies may reduce processing costs, but they can also damage customer loyalty. Generous policies support sales, yet they increase the volume and complexity of reverse logistics.

The objective is not to discourage legitimate returns. It is to reduce avoidable returns while processing necessary ones as efficiently as possible. The most effective way to reduce returns often begins before a product is sold.

Clear product information, accurate images, dependable sizing guides and better product recommendations help customers make more informed purchasing decisions. By addressing these challenges, retailers can reduce inventory distortion and improve their bottom line.

Retailers like Eagle Outfitters have been working to improve their inventory management systems to minimize losses and maximize sales.