Warehouse Rent per SKU Calculator

Dead SKUs cost space and capital at once.

Dead SKUs cost space and capital at once. SKUs with no sales in three months occupy space and hold capital simultaneously.

Written and maintained by Mohit PatelLast checked August 4, 2026How we build these

Currency

Monthly warehouse cost

Active SKUs

SKUs with no sales in 90 days

Share of space they occupy

Stock value tied up in them

Warehouse cost per SKU

$18.44

$14.05 each for the dead ones

Active SKUs900

Dead SKUs260

Space cost of dead SKUs$3,652

Annual cost of dead stock$43,824

260 SKUs with no sales in three months occupy 22% of the warehouse and cost $43,824 a year to store, on top of the $48,000 of capital they hold. Clearing them frees both.

How the Warehouse Rent per SKU Calculator works

SKUs with no sales in three months occupy space and hold capital simultaneously. Clearing them frees both, and the annual space cost alone usually justifies the discount needed to move them.

Also known as: storage cost by SKU · rent allocated per product · which SKUs cost most to store

Charging the building to the catalogue

Rent is a single monthly number and the catalogue is hundreds of SKUs. Allocating one to the other is what turns an overhead into a decision-useful cost, and the allocation basis determines whether the answer is any good.

Volume occupied is the right basis, since space is what rent buys. Each SKU's allocation is its share of total cubic metres stored, times the total occupancy cost, which is rent plus rates plus service charge plus utilities plus insurance rather than rent alone.

Allocating by unit count or by revenue is easier and misleading in both cases. Unit count penalises small items and subsidises bulky ones. Revenue penalises expensive items regardless of the space they occupy, which produces the conclusion that your best products are your most expensive to store.

Working through an allocation

Take total monthly occupancy cost, say £6,000. Take total volume stored, say 240 cubic metres. That is £25 per cubic metre per month.

A SKU holding 300 units at 0.006 cubic metres each occupies 1.8 cubic metres, so it carries £45 a month. If it sells 150 units a month, the rent per unit sold is 30p.

That last division is the one that matters and the one most often skipped. Rent per SKU tells you what the line costs to house; rent per unit sold tells you what each sale carries, and only the second is comparable with margin. A SKU carrying £45 of rent and selling 150 units is fine; the same £45 against 15 units a month is £3 per unit and is probably not.

The tail that eats the building

Run this across a catalogue and the distribution is stark. In most ranges a minority of SKUs generates most of the sales and occupies a minority of the space, while a long tail occupies a disproportionate share of the building and contributes little.

Sorting by rent per unit sold produces a list that is uncomfortable and actionable. The lines at the top are frequently ones that look fine on gross margin, because gross margin never sees the space.

The decisions that follow are the usual three: delist, reduce the holding, or change how it is stored. The third is underused. Moving a slow bulky line from racked pallet storage to dense floor stacking in a back corner can cut its allocation substantially without touching the range.

Fixed cost, variable decision

The objection to this whole exercise is that rent is fixed: delisting a SKU does not reduce the rent, so the allocated cost is notional. That is true in the short run and wrong over any period long enough to matter.

Space released has a use. It holds stock that turns, it delays a move to a larger unit, or it allows a sublet. Each of those has a value, and that value is what the allocation is proxying for.

The clearest version of the argument is the move decision. A business considering a larger warehouse because it is full should first run rent per unit sold across the catalogue, because there is usually enough space locked in the tail to defer the move by a year. Deferring a lease is worth considerably more than any individual SKU decision.

New products and the space question

The allocation is most useful before a product is bought rather than after. A new SKU needs a forecast of units held and volume per unit, which gives an expected monthly space cost, which belongs in the margin model alongside landed cost and fees.

Bulky low-margin products are where this changes decisions. A product with a healthy percentage margin can be unviable once space is charged, and the buyers who make these decisions rarely see a space cost because nobody produces one.

The threshold worth setting is a maximum space cost as a share of contribution. Products where housing costs more than some percentage of the margin need a different plan: drop-ship, made to order, or a supplier who holds. Setting that rule once is more effective than arguing about individual products, and it puts the constraint where it belongs, at the buying decision rather than at the warehouse door.

Where to go next

The Warehouse Rent per SKU question rarely arrives on its own. These are the ones that usually come with it:

Warehouse Utilization Calculator — A full warehouse is a slow warehouse.
Storage Days Cost Calculator — Physical storage is the smallest part.
Dead Stock Calculator — Value trapped in stock that is not moving.
Etsy Fee Calculator — Every Etsy fee on one sale, itemised.

Not financial advice. Marketplace fees change, and they vary by country, plan and seller status. Every rate here is an editable default, not a quoted price, check the platform's current fee schedule before you price a product against it. This is not tax or business advice.

Frequently asked questions

How do I allocate warehouse cost to SKUs?

By space occupied rather than evenly, if you can measure it. Even allocation understates the cost of bulky slow movers and overstates the cost of small fast ones.

When should a SKU be discontinued?

When its contribution does not cover the space and capital it consumes, and there is no strategic reason to keep it. Slow movers with high margin can still be worth stocking; slow movers with low margin rarely are.

What about long-tail SKUs that drive traffic?

They can genuinely earn their space through the visits and baskets they generate. That argument should be tested rather than assumed, most long tails contain more dead weight than halo.

How often should I review?

Quarterly. Dead stock accumulates quietly and the cost is invisible until someone runs the report.

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