Ghost Stock
This is where ghost stock becomes a problem: when the system says in stock, but the shelf is empty.
Estimated to contribute to as much as 80% of out-of-stock incidents, ghost stock – also known as phantom inventory – occurs when the system shows an item as in stock, but there is none of the product available in-store. It may have been misplaced, damaged, stolen, incorrectly received, or never replenished. Whatever the cause, the inventory record and the in-store reality no longer match, creating two different views of the same challenge.
From Head Office’s Point of View
From head office’s perspective, a product that was previously selling well has suddenly slowed down or stopped selling altogether. Yet the inventory records still show stock is available, and so replenishment systems don’t trigger. Rather than indicating an on-shelf availability issue, the data suggests demand has fallen, making the real problem difficult to identify.
From Store Team’s Point of View
From the store team’s perspective, the situation looks completely different. They can see the empty shelf, repeatedly disappoint customers and watch sales disappear. As the days pass, frustration grows. Colleagues spend valuable time checking the stock room, raising queries and repeatedly flagging the issue, only to find that replenishment requests are rejected because the file shows sufficient stock is already available in-store.
To avoid leaving an obvious shelf gap, teams may even fill the space with neighbouring products. While this creates a tidier display, it reduces visibility of the missing item, causing availability issues to persist even longer. Without a shared view between the shop floor and head office, store teams are left managing the symptoms, and the root cause is never fixed.
The Result…
The result is an invisible availability gap, and nobody has the full picture. Shelves stay empty, products remain unavailable to shoppers, replenishment doesn’t happen, and sales continue to decline.
This is what makes ghost stock so costly. Unlike a system-recognised out-of-stock, where action can be taken, ghost stock hides the problem behind an inaccurate inventory record. Until someone physically investigates and resolves the discrepancy, the error goes unnoticed, and lost sales continue.
The True Cost of Out-of-Stocks in Retail
An empty shelf doesn’t just result in a missed sale; it creates a chain reaction that continues long after the product is back where it belongs.
Lost Sales: Just the Start
The most immediate impact is lost sales. Research shows that when products are unavailable, shoppers don’t simply wait. Instead, they substitute for another product, switch retailers or delay their purchase altogether. Either way, the retailer loses revenue that should have been captured.
The Forecasting and Replenishment Knock-On Effect
The problem becomes far more costly when ghost stock is involved. The impact doesn’t stop once the initial sale is lost. It quickly spreads into forecasting and planning. Because ghost stock masks the true cause of falling sales, retailers can mistake an availability issue for declining customer demand. As a result, forecasting, buying and replenishment decisions are based on an inaccurate picture of product performance.
Even after the shelf has been restocked, the effects can linger. It may take several replenishment cycles before sales patterns recover, meaning inventory errors continue to influence demand planning long after the original availability issue has been resolved.
The challenge is intensified by the quality of the inventory data. Retailers’ inventory records are, on average, only around 60 percent accurate, meaning that nearly four in ten stock records may not reflect what’s actually in the store. When your inventory data can’t be trusted, replenishment decisions become reactive instead of proactive.
The Hidden Cost to Store Operations
The impact extends beyond lost sales. Store teams spend valuable time investigating inventory discrepancies, checking stock rooms, recounting products and raising queries with head office instead of serving customers and maintaining the shop floor. At the same time, planning teams are making decisions based on inaccurate inventory data, increasing the risk of further stock imbalances.
Customer Loyalty Is Harder to Win Back
Perhaps the greatest long-term cost is customer loyalty, and this is especially damaging for retailers offering Click & Collect services. When your eCommerce website tells customers that a product is available to buy locally, only for them to arrive and discover it isn’t, trust is quickly lost. It can take just one wasted journey for a customer to lose confidence in Click & Collect altogether and potentially not use the service again.
Shoppers expect products to be available, especially when your systems suggest they are. Repeatedly finding empty shelves erodes confidence, making customers more likely to choose another brand.
The Business Impact of Better On-Shelf Availability
Improving on-shelf availability isn’t just about keeping shelves full. It creates a ripple effect across the retail operation, helping teams make faster, better-informed decisions while reducing the hidden costs of inaccurate inventory.
The most immediate benefit is the ability to recover lost sales. By identifying products that have stopped selling but show as in-stock, retailers can focus their efforts on the items with the greatest revenue impact. Instead of discovering availability issues long after sales have already suffered, they can intervene early and minimise customers walking away empty-handed.
Better visibility also leads to more effective replenishment, helping restore on-shelf availability faster and reducing recurring stock issues.
The benefit extends beyond day-to-day store operations. With more accurate inventory data, forecasting becomes more reliable, and planners can separate inventory errors from genuine changes in customer demand. Better data leads to better purchasing, allocation and replenishment decisions across the business.
Store teams benefit too. Instead of spending valuable time investigating stock discrepancies and searching stock rooms, store colleagues can focus on serving customers out on the shop floor.
What 97% Stock Accuracy Meant for River Island
The benefits of improving stock accuracy aren’t just theoretical. Retailers that achieve greater inventory visibility see measurable improvements across sales, availability and fulfilment.
River Island is a good example. By improving the reliability of its inventory records, the retailer increased stock accuracy from 72 percent to 97 percent, giving both store teams and head office a far more reliable view of what was actually available.
The commercial results were equally impressive. Sales increased by around 5 percent, while critical out-of-stocks fell by approximately 11 percent. Improved stock accuracy also enabled services such as Click & Collect and Ship from Store, where confidence in store inventory is essential to delivering a reliable customer experience.
The takeaway is simple: when retailers can trust their inventory data, they make better replenishment decisions, reduce lost sales and create a stronger foundation for omnichannel retail. The technology used to achieve that may differ, but the principle remains the same – better stock visibility leads to better business outcomes.
How to Reduce Ghost stock with Availability Checker
The challenge with ghost stock is knowing which products to investigate before lost sales begin to mount. That’s where Availability Checker comes in.
Rather than trusting inventory records alone, uses sales performance, inventory behaviour and similar store comparisons to identify products that should be selling but aren’t. Availability Checker pinpoints the products most likely affected by ghost stock, allowing stores to take rapid, targeted action before availability issues become prolonged lost sales.
Much of this activity replaces checks that are already part of everyday store routines, Availability Checker focuses colleagues on the highest-priority investigations, helping retailers make better operational decisions without significantly increasing workload and offering value across the board, such as:
Recover Revenue at Risk
The most immediate benefit is recovering revenue that would otherwise be lost. By identifying products with the greatest commercial impact first, retailers can resolve availability issues before more customers leave empty-handed or buy elsewhere.
Improve Labour Productivity
Availability Checker helps stores make better use of existing labour by prioritising the investigations most likely to improve commercial performance. Colleagues spend less time searching for stock or investigating discrepancies and more time serving customers and keeping shelves full.
Strengthen Inventory Decisions
By separating inventory errors from genuine changes in customer demand, retailers increase stock file accuracy, replenish more effectively and gain greater confidence in forecasting, buying and allocation decisions.
Deliver a Better Customer Experience
Ultimately, improving on-shelf availability means customers can find the products they came to buy. Fewer empty shelves lead to a better shopping experience, increased customer satisfaction and stronger long-term loyalty.
Complete Check Visibility
Every availability check is also recorded, giving head office complete visibility of what was checked, by whom and when. This creates a clear audit trail, drives accountability and helps resolve issues more quickly.
Stop Losing Sales to Empty Shelves
Poor on-shelf availability isn’t simply part of retail; it’s often the result of a visibility gap between what the system says and what’s happening in store. Once head office and store teams are working from the same accurate data, ghost stock becomes easier to identify.
Availability Checker helps retailers close that gap with a simple, proven workflow that improves stock accuracy, increases shelf availability and gives store teams the information they need to act quickly.
How accurate is your stock? Find out with our Stock Accuracy Self-Assessment Tool and uncover what inaccuracies are costing you. Ready to take action? Get in touch with our team and start turning empty shelves back into sales.
