Sell-through rate is the percentage of the units a retailer received that have been sold within a defined period. It compares selling to supply, which makes it the quickest signal of whether a style, color, or size is earning its space. Buyers watch it weekly during a season: a style selling through quickly may deserve a reorder or more open-to-buy dollars, while one that barely moves is heading for a markdown and is quietly tying up inventory cash.
The Sell-Through Formula
Formula: sell-through % = units sold ÷ units received × 100
Worked example: a store receives 500 units of a knit top at the start of the season and sells 375 of them in the first eight weeks. Sell-through = 375 ÷ 500 × 100 = 75%. The remaining 125 units are 25% of the buy still on hand with part of the season left to sell them.
The period matters as much as the number. Sell-through is normally measured over a set window — the first four weeks, the first half of the season, or the full season — and comparisons are only fair between styles that have had the same time on the floor. A style that arrived late will look weak next to one that has been selling since the season opened, so experienced buyers note the receipt date before judging the rate.
What Counts as a Good Sell-Through Rate?
There is no single good number, because the right target depends on the category, the season length, and how the goods were bought. As a working guide, many apparel buyers look for roughly 70–85% sell-through by the end of a full-price season on fashion goods bought for one season only. Basic, replenishable items such as plain tees or core denim are managed differently: they are reordered continuously, so a lower in-period rate is acceptable as long as inventory turnover stays healthy and stock-outs are rare.
Short-season and trend-driven categories — swimwear, occasion dresses, holiday product — need higher sell-through before the season ends, because leftover units lose most of their value once the moment passes and can only be cleared at a steep markdown. Long-life basics can tolerate a slower rate because unsold units carry into the next season at full price.
How Buyers Act on Sell-Through
Sell-through drives three routine decisions. First, reorders: a style selling well above plan early in the season, with sizes still intact, is a reorder candidate while the vendor can still deliver. Second, allocation: units are moved from slow stores to stores where the same style is selling through, instead of sitting until they are marked down everywhere. Third, exit timing: a style stuck at a low rate after a fair selling window is marked down early, while there is still season left for the reduced price to work, rather than at the end when only clearance prices will move it.
Sell-through is also read by size and color, not just by style. A style at 75% overall may hide a broken size run — mediums gone, extra-larges untouched — which changes the next order's size ratios even if the style itself is reordered. Buyers who track these patterns in a planner make fewer emotional end-of-season decisions. The Apparel Search open-to-buy planner helps plan the dollars available for reorders, and the merchandising metrics tool puts sell-through next to the other key retail measures.
Common Questions
- What is a good sell-through rate for clothing?
- It depends on the category and season. Many buyers aim for about 70 to 85 percent by the end of a full-price season on seasonal fashion goods, while replenishable basics are judged more on turnover and stock-outs than on a single season rate.
- How is sell-through different from inventory turnover?
- Sell-through compares units sold to units received for a specific style over a set period. Inventory turnover compares the cost of goods sold for the whole business or category to average inventory over a longer period, usually a year.
- Should sell-through be measured in units or dollars?
- Units are the standard, because dollar sell-through is distorted when prices are marked down. A style can look strong in dollars after heavy discounting while the unit picture and the margin tell a weaker story.
- What should a buyer do when sell-through is low?
- First check the basics: price, display position, size availability, and whether the style arrived late. If the product itself is the problem, an early, planned markdown usually recovers more value than waiting for end-of-season clearance.
Retail Math & Fashion Business Guides
This page is part of the Apparel Search retail math and fashion business series. Browse the full series below, or start from the apparel industry tools hub.