Your Inventory Is Cash You Already Spent
Slow-moving inventory ties up cash. Item-level aging, turns, and days of supply help manufacturers and distributors decide where to act.
By AdōDesign Advisory
Updated September 15, 2026
Every business carrying inventory has some that will never sell at full value. That is normal and not, by itself, a problem.
The problem is not knowing which items, how much capital they represent, or how long it has been that way. When reporting cannot answer those questions, the problem may be discovered at year-end during a physical count, or during a diligence process, both of which are bad times to find out.
Why it accumulates quietly
Inventory grows for reasons that each make sense individually.
A customer asks for a part, so you stock it. The customer’s programme ends, and the stock stays. A supplier offers better pricing at higher volume, so you buy more. Demand shifts, and the balance sits. An engineering change makes a component obsolete, but the existing units remain on the shelf because writing them off means explaining the write-off.
None of this shows up in the aggregate. Total inventory rises gradually, sales rise too, and the ratio looks acceptable. What the aggregate hides is that a growing share of the balance has stopped moving entirely.
The reporting that finds it
Three reports, none of which requires new software.
Inventory aging by item. The value of each item grouped by days since last movement — 0–60, 61–120, 121–180, over 180. Most systems can produce this; many companies have simply never asked for it. The over-180 bucket is where the trapped capital lives.
Turns by category, not in total. A blended turn rate averages fast-moving consumables together with the slow items and tells you nothing actionable. Broken out by category, the difference is usually stark.
Days of supply on hand by item. Current quantity divided by average recent usage. This is the report that surfaces the item you have eleven years of, which is a different conversation from the item that is merely slow.
Running these three for the first time is often uncomfortable. It is also the fastest route to a specific, actionable list rather than a general sense that inventory is too high.
Turning the list into cash
Once you know what is stuck, the options are ordinary and the sequence matters.
Return what is returnable. Some suppliers accept returns, particularly for items still in current production. This is worth checking before anything else because the recovery is highest.
Sell it at a discount. A part sold at fifty percent of cost returns real cash. The same part carried for another three years returns nothing and consumes space and insurance. The instinct to hold out for full margin is usually wrong once an item has crossed the 180-day line.
Use it. Manufacturers can sometimes consume slow components in current products or offer them as substitutions. Distributors can bundle them.
Write off what is genuinely dead. This is the one people avoid, because the write-off hits the income statement. But the loss already happened — it happened when the item stopped being sellable. Carrying it forward misstates the balance sheet and, if there is a financing or sale process ahead, it will be found and adjusted by someone else on less favourable terms.
Preventing the next accumulation
Recovering trapped capital once is useful. Not rebuilding the position is what actually matters.
Review aging monthly, not annually. Put the over-180 report in the same meeting where you review receivables. Items surface at three months of inactivity, when the options are still good.
Assign ownership. Purchasing usually owns buying decisions and sales owns demand, and slow inventory sits in the gap. Somebody needs to own the metric.
Set reorder logic from actual usage. Reorder points established years ago and never revisited are a common source of steady accumulation.
Attach a cost to holding. When a business unit’s results reflect the carrying cost of its inventory, buying behaviour changes. When inventory is free to the person ordering it, it grows.
Why this shows up on a finance site
Because it is a finance problem wearing operations clothing.
The capital in slow inventory is cash the business already spent, sitting on a shelf, funded in many cases by a credit line the business is paying interest on. Recovering some of it may be possible through returns, reuse, or sale. Identifying the stock is only the first step; recovery depends on demand, condition, and supplier terms.
That knowledge is a reporting question, which puts it squarely in finance’s remit. If you cannot currently produce an inventory aging report by item, that is the place to start.
Topics
- inventory
- working capital
- distribution
- manufacturing
- cash flow
Related reading
- Cash Flow
Building a 13-Week Cash Forecast People Actually Trust
A rolling 13-week cash forecast connects collections, commitments, and liquidity. Its usefulness depends on weekly review and realistic assumptions.
7 min readRead - Reporting and Forecasting
How to Close the Books Faster Without New Software
Close sequencing, clear ownership, and cutoff discipline can shorten reporting delays before a software change becomes necessary.
7 min readRead - ERP and Systems
Why ERP Implementations Fail, and What Actually Prevents It
ERP outcomes depend on process decisions, reliable migration data, reporting requirements, and ownership after launch. Software selection is only part of the work.
8 min readRead