How $100,000 in Inventory Can Still Leave a Business Stocked Out

Total Inventory Can Hide the Real Problem

A business can have significant inventory on its balance sheet and still be unable to fulfill customer demand.

At first, that seems contradictory.

If there is plenty of inventory, why would the business be at risk of a stockout?

The answer is that total inventory tells us what the business owns. It does not necessarily tell us what the business can use to fulfill demand right now.

Inventory may be distributed across fulfillment channels, warehouses, 3PLs, suppliers, and shipments already in transit. At the same time, some of the company's working capital may be tied up in slow-moving products while high-demand SKUs are running short.

This is why inventory planning needs to look beyond the total number.

1. Total Inventory Is Not the Same as Available Inventory

Consider a business carrying $100,000 in inventory.

That inventory might include:

• Stock available at Amazon, Walmart, or another fulfillment channel

• Inventory stored at a warehouse or 3PL

• Finished goods waiting at a supplier

• Inventory currently in transit

• Excess or slow-moving SKUs

All of these units have value.

But they do not have the same operational availability.

Inventory sitting at a supplier cannot fulfill an order today.

Inventory in transit may already be committed to the right destination, but it might arrive after current stock runs out.

Warehouse inventory may be available for transfer, but the transfer itself requires time.

And excess inventory in one SKU does nothing to solve a shortage in another.

The location and status of inventory therefore matter just as much as the total quantity owned.

2. A Business Can Be Overstocked and Understocked at the Same Time

One of the most misleading inventory situations occurs when the total inventory value looks healthy while the SKU-level position tells a very different story.

Imagine two products.

Product A has several months of inventory and slowing demand.

Product B has less than two weeks of supply and continues to sell consistently.

The business may have substantial inventory overall, but much of its working capital is concentrated in Product A while Product B is approaching a stockout.

Buying more Product B may eventually be necessary.

But the broader management problem is not simply "we need more inventory."

The business has an inventory allocation problem.

Capital is tied up in inventory that is not supporting current demand while additional cash is required to protect the products that are selling.

That is why inventory health should be evaluated at the SKU level, not only through total inventory value.

3. Inventory Location Changes the Replenishment Decision

When a SKU needs replenishment, immediately creating a new purchase order should not always be the first response.

The first question should be:

What inventory already exists, and where is it?

For example, if the primary fulfillment location is running low but sufficient inventory is sitting at a warehouse or 3PL, an internal transfer may be the appropriate next action.

If warehouse inventory cannot cover the requirement, finished supplier-ready inventory may be available.

There may also be inventory already in transit that will cover part of the projected demand.

Only after accounting for these existing sources of supply can the remaining requirement be evaluated for a new purchase order.

A practical replenishment sequence might therefore look like:

Fulfillment inventory → Warehouse / 3PL inventory → Supplier-ready inventory → Inbound inventory → Remaining purchase requirement

The exact sequence will vary by business and supply chain design, but the principle is the same:

Use visibility into existing supply before committing additional working capital.

4. Timing Matters as Much as Quantity

Knowing that inventory exists somewhere in the supply chain is not enough.

We also need to know when it can become available.

Suppose a SKU has 15 days of supply remaining.

A warehouse has enough inventory to replenish it, but the transfer requires five days.

That may be manageable.

Now suppose the warehouse has no stock and supplier-ready inventory requires 25 days to reach the fulfillment location.

The business has inventory, but it also has a potential coverage gap.

This is why days of supply should be evaluated alongside replenishment lead time.

A healthy inventory quantity can become an operational problem when the time required to reposition or replenish it is longer than the remaining coverage.

5. Poor Inventory Visibility Becomes a Working-Capital Problem

When inventory information is fragmented, the natural reaction to a potential stockout is often:

Order more.

Sometimes that is exactly the right decision.

Sometimes it isn't.

If usable inventory already exists elsewhere in the network, placing another PO can increase inventory investment without solving the immediate timing problem.

The business may then end up with:

• A stockout at the fulfillment location

• Inventory sitting elsewhere in the network

• Additional inventory being manufactured

• More inventory already in transit

• Excess stock accumulating in slower-moving SKUs

• Less cash available for other operating requirements

At that point, an inventory problem has also become a working-capital problem.

Good replenishment planning therefore needs to consider not only whether inventory is required, but whether additional purchasing is actually the appropriate next action.

6. What Management Should Actually Monitor

Executives do not need to review every inventory transaction.

But they do need visibility into the exceptions that require decisions.

At a minimum, inventory and replenishment monitoring should help management understand:

• Which SKUs are approaching a stockout

• Which SKUs are carrying excess inventory

• Current days of supply or inventory coverage

• Inventory available by location

• Inventory already inbound

• Finished inventory available at suppliers

• Replenishment requirements and timing

• Purchase requirements after existing supply is considered

• Working capital tied up in slow-moving inventory

• The operational actions that require attention now

The objective is not simply better reporting.

It is to turn inventory data into clear operational decisions.

The Goal Is Not More Inventory

Good inventory management is not about maximizing inventory.

It is not about minimizing inventory either.

The objective is to maintain the right inventory, in the right place, at the right time, while using working capital responsibly.

That requires connecting demand planning, inventory position, replenishment lead times, existing supply, and purchasing decisions.

Because a business can have $100,000 in inventory and still stock out.

The total tells you what you own.

The inventory position helps tell you what you can actually do.

McKeeleen Advisory
Inventory • Demand • Replenishment • Operational Performance