Sell-Through Rate: Formula, Full Price vs Any Price, and How a Store Chain Reads It

Sell-through rate is the share of the stock a retailer had to sell that it has actually sold. It is units sold ÷ units received, as a percentage: a style bought in at 400 units that has sold 260 is at 65% sell-through.

It is the working measure of seasonal and one-time buys, where the quantity is fixed and whatever does not sell at full price is sold at a markdown, cleared, or carried into the next season. This guide covers the formula and its variants, the difference between full price and any price, how it differs from stock turnover, and how a chain reads it by week, store, size and colour. It is one of the measures in our guide to retail KPIs.

1. The formula and its variants

Sell-through rate = units sold ÷ units received × 100. The definition is old and stable: in a study of clearance pricing at Zara, the sell-through of a category was measured as "the ratio of units sold to initial inventory", and the company's weekly report called it success¹. What changes between retailers is the denominator, the basis and the price.

• Of a buy: units sold since launch ÷ units received since launch. The usual reading for a season's style, and the one a buyer means by "how is it selling through".
• Of a period: units sold in the period ÷ (stock at the start of the period + units received in it). When nothing else moved, that equals units sold ÷ (units sold + stock at the end).
• At full price: only the units sold before any markdown, over the units received. It answers whether the buy was right, not just whether it was cleared.
• In value: sales at the original retail price, or at cost, over the value of what was received. Use it when one style mixes very different prices, so a few expensive units do not count the same as many cheap ones.

Count net units: a return puts a unit back into the stock to sell, so it comes off the units sold. And keep the period fixed when comparing: a sell-through to date can only rise, so last season's figure at the same week is the comparison, not last season's final figure.

2. Full price or any price

Any style can be sold through if the price falls far enough. A headline sell-through that includes the Sale therefore says the stock is gone without saying what it cost to move. NEXT, which publishes the split, leads its results with full price sales, a figure that excludes Sale events and clearance², and its own accounts show how fast the markdown share can move.

NEXT puts the rise in markdown sales down to more Sale stock being held in its international hubs and in third-party aggregators' warehouses². The reverse also shows up in the accounts: in its stores, the company reports that "Higher clearance rates improved margin"². A clearance rate is the sell-through of the Sale stock, so the two readings belong together: how much sold at full price, and how much of the rest cleared.

H&M reports the same pair from the other side. Its quarterly reports comment on the cost of markdowns as a percentage of sales, and it gives its stock as a share of the last twelve months' sales: 15.5% at the end of its 2025 financial year, against 17.2% a year earlier³.

3. Sell-through rate vs stock turnover

Both relate sales to stock, but they answer different questions. Stock turnover is a flow: cost of sales over average stock at cost, the number of times a year the stock is replaced. Sell-through is a share of a fixed quantity, and it stops at 100%. A pint of milk or a phone charger that is reordered every week has no buy to sell through; a coat bought once for the winter has no meaningful turn until the season is over.

4. Reading it against the weeks of the season

A sell-through of 40% is ahead of plan in week 4 of a sixteen-week season and far behind in week 14. So the figure is always read against a plan curve: the share of the buy that should have gone by this week. The simplest curve is a straight line to the end-of-season target; a better one follows the weeks the category actually sells, with the peak where last year's peak was.

The second check looks forward. Weeks of cover is the stock left divided by the units sold per week; if it is longer than the weeks left in the season, the style will not sell out at today's pace. Zara's country managers used exactly that reading before the company's pricing system: the report showed a "rotation", remaining stock over the current rate of sale, and the prevailing practice was to mark a category down when the rotation ran past the end of clearance sales¹. There was no fixed target, but managers usually aimed for 90% success or more by the end of the Sale¹.

The same study shows the trap. Managers followed the system's price recommendations more often when a product was predicted to run out before the campaign ended, which the authors read as inventory and sales being more salient to them than revenue; two changes that put revenue in front of them helped raise both adherence and revenue¹. Sell-through is a means. The goal is the margin earned on the whole buy, and a style cleared by marking it down too early can earn less than one that ends the season with a few units left.

5. Store by store, size by size

A chain's sell-through for a style is total units sold over total units received, so it averages stores that may be in opposite situations.

Before a chain-wide markdown, move units from the stores far behind plan to the stores ahead of it, where the margin on the extra sales covers the cost of the move, and mark down only what will not sell anywhere at full price. Store 9 may also be selling out too early: a store that reaches its target weeks ahead of the season is often one with empty shelves later, so its high figure is a sign the allocation was too thin.

Then go one level down. A style at 60% can have sold out of M and L and be left with XS and XXL: the store can no longer show a full run of sizes, so the remaining stock sells slowly and looks like a weak style when it is a broken one. Read sell-through by size and colour, transfer the missing sizes where another store holds them, and set the next buy's size mix from what sold rather than what was bought. What is left at the end of the season is carried over, cleared or written off, and that tail is where dead stock starts; a sound stock control routine catches it while it can still be moved.

6. What a good sell-through rate depends on

• The week. Only a figure at the same point of the season, against the plan for that week, says anything.
• The product's role. Fashion and seasonal lines are judged on sell-through; basics that are reordered are judged on turnover and availability.
• The margin it was bought at. A line with a high initial margin can sell more of its buy at a markdown and still earn its plan, so its full-price target can be lower.
• The depth of the buy. A thin buy sells through quickly and loses the sales it could not serve; a very high early figure is a buying question as much as a success.
• The price basis. A figure at any price and a figure at full price are different measures and should carry different names.

There is no published benchmark that fits all of these at once. The useful comparison is the same category at the same week last season, in the same stores, with the share sold at full price next to it.