What Is Retail Gross Margin?
Retail gross margin measures the profitability of your product range. Learn the industry benchmarks and how to improve yours.
Key Takeaways
- Retail gross margin = (selling price minus cost of goods) divided by selling price
- Initial mark-up is what you plan to achieve; maintained margin is what you actually achieve after markdowns
- UK grocery gross margin is 25-30%; fashion 50-65%; health and beauty 40-55%
- Shrinkage, markdowns, and supplier returns all erode gross margin from initial to maintained
What retail gross margin is
Retail gross margin measures the percentage of revenue remaining after deducting the cost of the goods sold. For a product bought at £10 and sold at £25, the gross margin is £15 / £25 = 60%. It is the most fundamental profitability metric in retail because it sets the ceiling for all other profits — if your gross margin is 50%, then all the costs of running your stores (rent, staff, energy, marketing) must come out of that 50%, with any residual being operating profit.
Initial mark-up vs maintained margin
Initial mark-up (IMU) is the margin built into the product at the time of pricing — the difference between cost and the original selling price. Maintained margin (also called realised margin) is the gross margin actually achieved after accounting for all the reductions that erode the original pricing: markdowns (discounts during trading), stock losses (shrinkage), and supplier allowances and returns. In most retail businesses, maintained margin is significantly lower than initial mark-up — the difference is the cost of doing retail business. Managing the gap between IMU and maintained margin is a core retail operational discipline.
Industry benchmarks
Gross margin benchmarks vary significantly by retail category. Grocery and food retail: 25-35% — thin margins offset by very high volumes. Fashion and apparel: 50-65% — high margins necessary to fund mark-down risk and seasonal inventory. Health and beauty: 40-55%. Home and garden: 40-50%. Jewellery and luxury: 50-65%. Electronics: 15-25% — very thin margins driven by price transparency and competitive intensity. Always benchmark against your own category — comparing a fashion retailer's margin to a grocery retailer's is meaningless.
What erodes gross margin
Four factors erode gross margin from initial to maintained. Markdowns: discounting during trading to clear slow-moving stock or in response to competition — the biggest margin erosion driver in most fashion and seasonal retail. Shrinkage: stock loss from theft, damage, and administrative error — typically 1-2% of revenue in well-managed retail. Supplier terms: if the landed cost of goods increases (supplier price increase, rising freight, duty changes) without a corresponding selling price increase, margin is squeezed. Promotional activity: promotions that reduce selling price without a corresponding reduction in cost. Track each source of margin erosion separately.
Improving retail gross margin
Margin improvement levers include: selective price increases on less price-sensitive SKUs (price elasticity testing helps identify where this is possible), negotiating better supplier terms on high-volume lines, tightening buying and reducing the volume of slow-moving stock that will ultimately need to be marked down, reducing shrinkage through better stock management and security, and improving the ratio of full-price sales to promotional sales. The most sustainable margin improvement is reducing markdown dependency — which requires better buying (buying closer to demand), better trading (responding faster to early sell-through data), and better range management.