Market Size for Retail store in 2026 [Example]

The Total Available Market (TAM) for retail stores worldwide can be estimated at roughly $1.5 trillion annually. This figure considers all retail sales, including online and physical stores. Given that there are about 4 billion internet users globally and approximately 7.8 billion people in total, we assume a broad market that encompasses not only potential customers but also those who engage with retail in some form, including casual shoppers, occasional buyers, and regular consumers.

The Serviceable Available Market (SAM) narrows down to the segment of the TAM that a retail store might realistically reach. Assuming that the retail store focuses on a specific niche, such as eco-friendly products or local goods, we can estimate that 20% of the TAM is realistically serviceable. This results in an annual spending of $300 billion from around 600 million targeted customers, considering the specific demographic that is willing to purchase from a focused retail store.

The Serviceable Obtainable Market (SOM) reflects the realistic share of the SAM that can be captured in the first year. Assuming an average spending of $500 per customer annually, capturing 1% of the 600 million potential customers gives us approximately 6,000 customers in the first year. This translates to $3 million in potential revenue. This low estimate recognizes the challenges small businesses face in acquiring customers amidst greater competition.