The True Cost of Inventory: How Excess Stock Eats Your Margins (And How to Fix It)

Your inventory is not just product sitting on a shelf, it is cash that has been frozen in time. For most distribution companies, inventory represents a massive investment, often accounting for as much as 80% of total assets. When that investment is managed poorly, it becomes a weight that drags down your balance sheet and restricts your cash flow.

In this article, we’ll look at the most important points to help you transition from simply managing stock to mastering the art of replenishment. 

The Geography of Demand: Why location is everything in 2026 

In today’s fast-moving market, simply having the product is not enough. You must have the right amount of that product in the right location to meet local demand. This concept is known as anticipation inventory. It involves holding stock in specific regions to prepare for future sales, such as moving portable generators to areas expected to be hit by seasonal storms.  

Geography plays a critical role because of in-transit inventory. This is the stock currently in transit between your supplier and your warehouses. In a large market like Canada, delays in shipping or customs can create weeks of uncertainty. If your business processes are slow or unresponsive, you end up with structurally created inventory. This is excess stock that exists only because your systems are too sluggish to react to the reality of the field.  

The Cost of Being Wrong: Carrying vs. Stock-outs 

Every piece of inventory has a cost that goes far beyond its invoice price. While most managers look at the item cost, many overlook the hidden carrying costs. These costs include:  

• Cost of Capital: The lost opportunity to invest that money elsewhere.  

• Storage Costs: Rent, utilities, insurance, and the physical space required for housing goods.  

• Risk Costs: The danger of product damage, pilferage, or the silent killer of distribution:  obsolescence.  

In an industrial distribution business, carrying costs typically range from 25% to 40% of the inventory value annually. This means that if you are holding 1 000 000$ in excess stock, you are effectively losing up to 400 000$ every year just to keep it on your shelves.  

However, the alternative of having too little stock is equally dangerous. Stock-out costs include lost sales, back-order processing fees, and, most importantly, damaged customer loyalty. If a client in Montreal or Toronto cannot get what they need from you, they will find another partner who can. The goal is to find the perfect balance where service levels remain high without drowning the company in carrying costs.  

Moving Beyond Excel: How Pareto’s Law saves your team time 

Many CEOs and owners are still drowning in Excel spreadsheets to manage thousands of SKUs. This manual approach is not only prone to errors, but it is also an inefficient use of your team’s talent. To fix this, we essentially apply the 80/20 rule, known as Pareto’s Law.  

This principle suggests that 80% of your business is driven by 20% of your items. By using ABC class codes, you can group your inventory by importance:  

• Class A: The small number of items that dominate your sales. These require the tightest control and most frequent review.  

• Class B: Middle-tier items with moderate activity.  

• Class C: The large volume of items that contribute only 5% of your activity.  

Instead of treating every nut and bolt with the same level of urgency, your team can focus their energy where the value is highest. This structure eliminates organizational blindness and ensures that your “A” items are always available when a customer needs it.  

How Prophet 21 Bridges the Gap: Automation that feels human 

At Concerti, we offer Epicor Prophet 21 because it is an ERP solution designed specifically for the needs of distributors. It moves you away from static guesses and toward dynamic replenishment. Traditional systems use fixed numbers for “min” and “max” levels, which require constant manual updates as demand changes. Prophet 21 changes the game by using real-time data to calculate your needs “on the fly”.  

Two key tools in this process are EOQ and PTV: 

• EOQ (Economic Order Quantity): This is a mathematical formula that finds the exact intersection where your ordering costs and carrying costs meet. It tells you the most profitable amount to buy at any given time based on actual usage history.  

• PTV (Purchase Target Value): This tool stimulates your buyers to create economic orders. It sets targets for weight or value so that you qualify for freight incentives and vendor discounts, reducing your overall landed cost.  

These tools do not replace your team. They empower them. By automating the routine calculations, your employees are free to manage exceptions and build better relationships with your suppliers. This is what we mean by a human-centric ERP: using technology to make work more meaningful and less repetitive.  

From a software project to a human success story 
Replenishment is not just about buying parts. It is a deliberate process that optimizes your service levels while protecting your turnover. Your inventory strategy should be a competitive advantage, not a liability.  

We understand the reality of the field because our consultants come from the industry. We speak your language, whether you are a CEO looking for ROI or a VP of Operations trying to break down data silos. Stop letting inefficient inventory management processes dictate your cash flow.  

Book a meeting with our experts today to start your journey toward operational mastery.