Market Size for Online business in 2026 [Example]

The total available market (TAM) for online business encompasses the entire global internet user population, roughly estimated at 4.8 billion people.

Assuming around 25% of these users engage in online business activities, this leads to approximately 1.2 billion potential users.

With the average online business contributing around $500 in annual revenue per participant, the total TAM is calculated as 1.2B users * $500 = $600B.

The serviceable addressable market (SAM) narrows the focus to those actively starting or running online businesses, which can be conservatively estimated at 300 million people.

Assuming that about 25% of internet users engage in online business, we can target those most likely to spend money on products/services—which translates to 300 million potential customers.

If each of these businesses generates an average revenue of $500 annually, the SAM would be 300M users * $500 = $150B.

The serviceable obtainable market (SOM) represents a realistic share that can be captured in the first year.

Given competitive pressures and the early business stage, a conservative estimate would be capturing 0.03% of the SAM. This translates to about 10,000 customers in the first year.

If each of these customers contributes $500 annually, the SOM would thus be 10,000 users * $500 = $5M.