Margin vs. sell-through rate: how to strike the right balance
Fabrice Decroo
Consulting Director
August 17, 2026
Maintaining a high price protects the unit margin but slows sales; marking down quickly speeds up sales but erodes the margin. The right balance is calculated, not guessed.
The total annual cost of holding inventory—including capital, storage, and obsolescence—averages 20 to 30 percent of its value.
Holding a price longer protects unit margin — but slows sell-through. Discounting quickly and aggressively accelerates sell-through — but destroys margin. This guide explains how to interpret this trade-off and make decisions without guesswork.
Two objectives pulling in opposite directions
Holding a price longer protects unit margin — but slows sell-through, carrying the risk of ending the season with significant residual inventory. Discounting quickly and aggressively accelerates sell-through — but destroys margin on units that might otherwise have sold at full price.
There is no universal answer to this trade-off: it depends on the product's commercial lifecycle, the actual cost of holding it in inventory, and its alternative value if it fails to sell in time. This final variable — the cost of tied-up capital in inventory — is most frequently underestimated.
Tied-up inventory costs more than it appears
The displayed price is only part of the equation. Inventory sitting on shelves or in warehouses continues to incur costs every week, even without any corresponding sales. According to the Council of Supply Chain Management Professionals (CSCMP) in its annual State of Logistics Report, the total cost of carrying inventory — tied-up capital, warehousing, insurance, obsolescence — averages 20% to 30% of inventory value per year.
of the stock value, this represents the total annual holding cost (immobilized capital, warehousing, insurance, obsolescence) according to the Council of Supply Chain Management Professionals — a cost that accrues every week the product remains unsold.
Specifically, a product with a 20% margin that remains in inventory for another six months may have already consumed, purely in holding costs, more than a reasonable markdown would have cost it in immediate margin. It is this calculation — rarely performed on a reference-by-reference basis — that should drive the decision to markdown, rather than mere intuition such as "it will end up selling eventually."
What to measure before making a decision
- The actual sell-through rate: the percentage of stock sold over a given period, compared to the target required to clear inventory before the deadline.
- The weekly holding cost: the cost incurred each week for keeping the product in inventory rather than selling it.
- The exit value if the product remains unsold: liquidation, donation, destruction — each has a very different residual cost, which must be anticipated before the end of the season.
- The category elasticity: the extent to which a price drop genuinely accelerates sales for this specific product, information already covered in detail in our article on price elasticity.
A simple method for making a decision
Calculate the break-even point of waiting
Compare the weekly holding cost to the expected margin gain of keeping the price at full retail for another week.
Set a sell-through target, not just a price
Define the percentage of stock that must be sold at each milestone of the season, and let the price adjust to achieve it.
Simulate before marking down
Quantify the expected impact of a markdown on volume AND margin — see our article on how a pricing tool works.
Review the decision at each milestone
Do not lock in a pricing decision for the entire season: reassess the gap between the actual sell-through and the target at regular intervals.
The most frequent mistake: managing based solely on the displayed margin
A pricing decision that protects the displayed unit margin can, in practice, destroy more value than a more aggressive markdown — if it allows inventory to accumulate, drives up holding costs, and ultimately leads to emergency liquidation at a price far worse than what an early markdown would have yielded. Managing solely by the displayed margin, without factoring in the cost of time, is equivalent to ignoring half the problem.
Before deciding whether to maintain the price or implement a markdown
- Have I calculated the holding cost of this inventory for the coming weeks?
- Does my current sell-through rate allow me to reach zero inventory before the deadline?
- Have I simulated both the margin AND volume impact of a markdown, rather than just one of the two?
- Have I anticipated the exit value if this inventory remains unsold?
FAQ
The questions we are most frequently asked before getting started.
This depends on the cost of holding inventory versus the expected margin gain while waiting. An explicit calculation, rather than intuition, must resolve this trade-off on a product-by-product basis.
By factoring in immobilized capital, warehousing, insurance, and the risk of obsolescence — a comprehensive annual cost estimated between 20% and 30% of inventory value.
Not necessarily: a 100% sell-through rate achieved through excessive markdowns may cost more than retaining a small residual stock intended for donation or targeted liquidation.
Ideally by reference, as two products within the same category can exhibit vastly different sell-through dynamics.
Sources: Council of Supply Chain Management Professionals (CSCMP), annual state of logistics report — cscmp.org · Booper product data (GENIUS Promotions module, margin/volume impact simulations).
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