Margin vs. Turnover Rate: how to strike the right balance
Maintaining a high price protects the unit margin but slows sales; slashing prices quickly speeds up sales but erodes the margin. The right balance is a matter of calculation, not guesswork.
The total annual cost of holding inventory (capital, storage, obsolescence) averages 20 to 30 percent of its value. The purpose of BOOPER’s Markdown & Clearance module is to quantify this trade-off between margin and sales on a per-SKU basis.
Holding onto a price for longer protects the unit margin but slows down sales. Cutting prices quickly and aggressively speeds upsales but erodes the margin. This guide explains how to analyze this trade-off and make a decision without relying on guesswork.
Two objectives pulling in opposite directions
Holding prices steady for longer protects the unit margin but slows sales, with the risk of ending the season with a large amount of leftover inventory. Offering deep discounts quickly accelerates sales but erodes the margin on units that might otherwise have sold at full price.
There is no one-size-fits-all answer to this trade-off: it depends on the product’s shelf life, the actual cost of keeping it in inventory, and what happens to it if it doesn’t sell in time. It is this last variable—the cost of tied-up inventory—that is most often underestimated.
To review the basics of accounting, see our definition of gross margin.
Tied-up inventory costs more than it appears
The listed price is only part of the equation. Inventory that remains on the shelf or in the warehouse continues to cost money every week, even if it isn’t sold. According to the Council of Supply Chain Management Professionals (CSCMP), in its annual report on the state of logistics, the total cost of holding inventory (tied-up capital, warehousing, insurance, obsolescence) averages 20 to 30 percent of the inventory’s value per year.
of the inventory value is the total annual cost of holding inventory (tied-up capital, storage, insurance, obsolescence), according to the Council of Supply Chain Management Professionals—a cost that accrues each week the product remains unsold.
In practical terms, a product with a 20% margin that remains in inventory for six additional months may have already incurred, in pure carrying costs alone, more thana reasonable markdown would have cost in immediate margin. It is this calculation—which is rarely performed—that should guide the decision to mark down, rather than simply relying on the intuition that “it will eventually sell.”
What to measure before making a decision
- Actual sales rate: the percentage of inventory sold during a given period, relative to the target required to sell the inventory by the deadline.
- Weekly carrying cost: the cost, each week, of keeping the product in inventory rather than selling it.
- The disposal value if the product remains unsold: liquidation, donation, or destruction—each has a very different residual cost, which must be anticipated before the end of the season.
- Price elasticity of the category: the extent to which a price reduction actually boosts sales of this specific product—a topic 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
To quantify the expected impact of a price reduction on both volume AND margin, see our article on how a pricing tool works.
Review the decision at each milestone
Do not set a price for the entire season; instead, reassess the gap between actual and target sales at regular intervals.
The most common mistake: relying solely on the displayed margin
A pricing decision that protects the stated unit margin can, in fact, destroy more value than a more aggressive markdown if it allows inventory to pile up and drive up holding costs, only to be liquidated in a rush at a price far worse than what an early markdown would have yielded. Managing inventory based solely on the stated margin, without factoring in the cost of time, amounts 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 an explicit calculation, not on intuition: you need to compare the weekly cost of holding the inventory with the expected margin gain from keeping the full price for another week. This is the first step of the 4-point method presented in the article.
This calculation must be done on a product-by-product basis, not at the category level: a product with a 20% margin that remains in inventory for six additional months may have already incurred, in pure carrying costs alone, more than what a reasonable markdown would have cost in immediate margin. It is precisely this calculation—which, according to the article, is rarely performed on a product-by-product basis—that should guide the decision, rather than the reflexive assumption that “it will eventually sell.” The article on markdowndetails the options available once this decision has been made.
The article emphasizes that the most common mistake is to base decisions solely on the displayed margin: a decision that protects that unit margin can, in fact, destroy more value than a more aggressive price reduction, if it allows inventory to pile up until an emergency clearance sale at a much worse price.
The actual cost far exceeds the purchase price alone. According to the Council of Supply Chain Management Professionals (CSCMP), in its annual report on the state of logistics, the total cost of holding inventory—including tied-up capital, warehousing, insurance, and obsolescence—averages 20 to 30 percent of the inventory’s value per year.
This cost accrues each week that the product remains unsold, making it a factor that must be explicitly factored into the decision between maintaining the full price and discounting—rather than a mere incidental expense to be ignored in margin calculations. The article recommends comparing this cost to the specific weekly carrying cost of each SKU to objectively evaluate the two options—an issue that is directly linked to that of idle inventory and unsold end-of-line items.
Underestimating this cost is one of the most common biases in inventory management: it leads to holding onto a price for too long by relying on a stated margin that does not take into account what it actually costs to tie up inventory while it sits on the shelf.
No, not necessarily. The article is clear on this point: a 100% clearance achieved through excessive markdowns can cost more—in terms of lost profit margin—than keeping a small amount of inventory to donate or sell in a targeted end-of-season clearance.
According to the 4-step method described in the article, the goal to set is not a price but a percentage of inventory to sell at each milestone of the season, with the price adjusting to meet that goal—not the other way around. This sales target should be reviewed at regular intervals, without locking in the pricing decision for the entire season; the tiered approach described in our article on the calendar and markdown depth applies directly to this type of pricing strategy.
Aiming for 100% often costs more than accepting a controlled level of leftover inventory: every additional markdown applied to sell the last few units affects the entire volume already sold at that price, not just the remaining stock.
Ideally by SKU, not just by category. The article points out that two products in the same category can have very different sales dynamics, depending on their specific price elasticity, shelf exposure, or positioning within the product line.
Relying solely on an average rate per category masks the differences between SKUs: a healthy category average can hide an SKU that is performing significantly worse, which delays the detection of the problem and reduces the time available to adjust the price before the deadline—an issue of granularity that we detail in our article on price elasticity by product, store, and cluster.
This level of detail aligns directly with the other metrics recommended in the article—the weekly carrying cost and the disposal value for unsold items: these are variables specific to each SKU, which inform precise decision-making rather than a one-size-fits-all rule applied to an entire aisle.
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).
The volume sold during a promotion does not indicate whether it created value: part of it comes from similar products (cannibalization), and another part from purchases that were simply brought forward.
Each promotional scenario must be costed out prior to launch using the same metrics: base sales, actual incremental sales, cannibalization, carryover, halo effect, net margin for the category, and cost per unit actually gained.
Margin-volume arbitrage can then be explained: a stated objective, visible forecasting factors, constraints adhered to, and a documented validation process.
A national food retailer with more than 1,700 stores and several million price points per year: With Booper, its pricing teams simulate the impact of each decision on margins, competitiveness, and price perception before implementing it.
Key takeaway: Pricing, promotions, and markdowns are three factors that constantly influence one another, but are still managed using separate tools at most retailers.
This fragmentation creates inconsistencies that are invisible in the short term (a muddled pricing image, margins eroded by promotions that aren’t properly coordinated with markdowns) but costly in the long term. Gartner has, in fact, formalized this convergence as a distinct market category: unified optimization of pricing, promotions, and markdowns.