What is stock turn in fashion retail?
How many times a business sells and replaces its average inventory over a period, usually a year.
In short
Stock turn, also called inventory turnover, shows how many times a business sells and replaces its average inventory over a period, usually a year. A higher stock turn means less money is tied up in stock and products stay fresher.
How does it work in practice?
Stock turn is calculated by dividing sales at cost over a period by the average inventory at cost. Merchandisers measure it for the whole business and by category, brand and store. Basics and NOS items typically turn faster than seasonal fashion lines, while occasion wear or high-value items may turn more slowly. Comparing stock turn over time shows whether buying and replenishment are becoming more efficient.
Why does it matter?
Every unit of stock ties up cash and space. Faster stock turn frees capital for new products, reduces the risk of obsolete inventory and lowers storage and markdown costs. Combined with margin, it forms the basis of GMROI, which shows the overall return on inventory. Retailers often favour brands and categories that turn quickly, because they generate more sales from the same investment.
How is AI changing it?
AI raises stock turn by aligning inventory with real demand. More accurate forecasts allow smaller initial buys and timely replenishment, while allocation models send stock to the locations where it will sell fastest. AI can also flag slow-moving items early, so teams act before stock ages and loses value.
Common pitfalls
- Chasing high stock turn by understocking, which leads to lost sales.
- Mixing cost and retail values in the calculation.
- Comparing stock turn between categories with very different business models.
- Looking only at annual averages and missing seasonal peaks.
Frequently asked questions
How do you calculate stock turn?
Divide the cost of goods sold over a period by the average inventory at cost during that period.
Is a higher stock turn always better?
Not always. Very high stock turn can mean the business carries too little stock and loses sales. The goal is a healthy balance between availability and inventory investment.
