Gross Margin Return on Investment
Pronunciation: GIM-roy (industry colloquial)
Also written as: GMROI — Gross Margin Return on Investment
A retail profitability metric measuring the gross margin generated per dollar of average inventory investment, abbreviated GMROI.
Full Definition
GMROI (Gross Margin Return on Investment) is calculated by dividing gross margin dollars by the average inventory cost held during the same period. It enables retailers to evaluate how effectively their inventory investment generates profit, making it a key metric in assortment planning and vendor performance reviews. A GMROI above 1.0 indicates that the retailer earns more in gross margin than it costs to hold the inventory. Editors should always use the acronym GMROI after first-use expansion and should not confuse it with ROAS (Return on Ad Spend) or ROI (Return on Investment), which measure different things.
Usage
Usage note: Expand to full form on first use. The colloquial pronunciation 'gimroy' is common in trade settings but should not appear in written editorial copy.
In Context
- "Accessories achieved the highest GMROI in the store, reflecting both strong margins and high inventory velocity." — Category performance review
- "The GMROI figure must be calculated using average inventory at cost, not retail value, to ensure comparability across categories." — Retail analytics methodology note