The Most Expensive Inventory Is The Inventory You Don't Know You Have
Most executives worry about having too much inventory.
They worry about excess stock sitting on shelves, tying up cash, consuming warehouse space, and increasing carrying costs. Finance teams monitor inventory turns. Operations teams focus on aging inventory. Supply chain leaders work to reduce working capital while maintaining customer service. Entire initiatives are often built around reducing inventory investment without disrupting the business.
Those concerns are valid.
However, some of the largest inventory costs I have encountered throughout my career were not caused by having too much inventory. They were caused by organizations not knowing what inventory they actually had.
At first glance, that may seem impossible. Most companies have inventory records, cycle count programs, warehouse management systems, ERP platforms, and financial controls. They can generate inventory reports with the push of a button and produce detailed summaries of inventory value by location, product, and category.
The problem is that the system and reality are not always the same thing.
When inventory accuracy begins to deteriorate, the consequences rarely appear all at once. Instead, they emerge slowly throughout the business. Planners lose confidence in inventory reports and begin carrying additional safety stock. Procurement increases orders to protect service levels. Production schedules become less reliable. Customer service teams spend more time investigating shortages. Expedites increase. Warehouses conduct more physical searches. Working capital rises. Because each symptom appears in a different department, few people initially connect the problems to inventory accuracy.
What makes inventory inaccuracy particularly dangerous is that it creates decisions based on information that is wrong. An organization may believe it has sufficient inventory to support demand and delay replenishment, only to discover the product is not actually available. In other situations, a company may purchase inventory it already owns because nobody trusts the records enough to rely on them. The result is often the same. More inventory enters the business while confidence in inventory continues to decline.
Over the years, I have seen organizations carrying millions of dollars of inventory while simultaneously experiencing stockouts on critical items. To an outsider, the situation appears contradictory. How can a company have too much inventory and not enough inventory at the same time? The answer is usually simple. The inventory exists somewhere in the network, but the organization lacks the visibility, process discipline, transaction accuracy, or operational controls necessary to use it effectively.
The most revealing aspect of these situations is that inventory accuracy problems rarely begin in the warehouse. They often begin with weak process discipline, inconsistent execution, poor accountability, inadequate training, or leadership teams that underestimate the importance of transaction accuracy. By the time inventory discrepancies become visible, the root causes have usually been present for months or even years.
Warning Signs You May Not Know What Inventory You Actually Have
If several of these conditions exist simultaneously, the organization may have a larger inventory visibility problem than leadership realizes:
Inventory levels continue increasing without corresponding service improvements.
Stockouts occur despite significant inventory investment.
Expedites and emergency purchases become routine.
Planners carry additional safety stock because they do not trust inventory reports.
Cycle count adjustments occur frequently.
Employees spend excessive time searching for product.
Different departments report different inventory numbers.
Customer service teams regularly investigate inventory discrepancies.
Inventory discussions rely heavily on spreadsheets rather than system data.
Leaders routinely question whether reported inventory is actually available.
Any one of these issues may have a reasonable explanation. Several occurring together often indicate a deeper problem.
The financial impact extends far beyond the warehouse. Inventory accuracy affects forecasting, purchasing, production planning, transportation, customer service, cash flow, and working capital. When inventory information becomes unreliable, organizations compensate by carrying additional inventory, creating more buffers, and adding more complexity throughout the business. Ironically, many companies respond to inventory uncertainty by purchasing even more inventory, increasing costs while failing to address the underlying issue.
The highest-performing organizations understand that inventory is not simply a warehouse metric. It is a business asset that supports decision-making across the enterprise. They invest in process discipline, transaction accuracy, cycle counting, accountability, and leadership oversight because they understand that inventory accuracy is not about counting product. It is about enabling better decisions.
I have never seen a company intentionally make bad inventory decisions. - I have seen plenty make decisions using bad inventory information.
The result is almost always the same. More inventory. More expedites. More frustration. More cost.
Leaders often focus on how much inventory they own.
The better question is whether they trust the inventory data enough to make decisions without second-guessing it.
Because when confidence in inventory disappears, the costs spread far beyond the warehouse.