Comparable Store Sales

A retail metric comparing sales growth from stores open for at least one year, isolating organic growth from new store openings.

Comparable store sales (often referred to as "comps" or "same-store sales") is a key performance indicator used in the retail, restaurant, and hospitality industries. It measures the revenue generated by existing locations over a specific period compared to the same period in the prior year, excluding newly opened, closed, or temporarily renovated locations. This metric isolates organic growth from artificial growth generated by simply building new stores. To calculate comparable store sales, companies establish a baseline definition for what constitutes a "comparable" store, which is typically a location that has been open and operating for at least 12 to 14 consecutive months. The revenue from these mature locations is aggregated and compared directly to their performance in the prior year's matching period, stripping out the volatile revenue contributions of brand-new outlets. Investors pay close attention to comps because they reveal the underlying health of a brand and its customer demand. A retail chain can show rising total revenue by aggressively opening new locations, but if its comparable store sales are negative, it indicates that existing stores are losing customer traffic or pricing power. Healthy retail companies typically target positive, inflation-beating comps growth, while negative comps often signal market share loss, operational issues, or changing consumer preferences.

Retailer A has 100 stores that have been open for over a year. During Q3 of last year, these 100 stores generated $50,000,000 in sales. In Q3 of this year, those same 100 stores generated $52,500,000 in sales. The comparable store sales growth is calculated as ($52,500,000 - $50,000,000) / $50,000,000 = 0.05, or 5%.