Total addressable market

Before betting on a market, it pays to ask how big the prize could possibly be. The total addressable market is the answer to that question at its most expansive.

The total addressable market is the full revenue opportunity available for a product or service if it captured every possible customer, the entire size of the market a business is targeting. It is a foundational figure for assessing the potential of a business or opportunity, defining the upper bound of how large it could ever become.

The size of the prize

The total addressable market answers a basic strategic question: how big is the opportunity? It estimates the total revenue that would be earned if a product reached every customer who could conceivably want it and captured the entire market. This is, of course, a theoretical maximum that no business actually achieves, since no firm wins every customer, but it sets the ceiling on the opportunity and indicates whether a market is large enough to be worth pursuing. A vast addressable market suggests room to grow; a tiny one caps the ambition however well the business executes.

The nested markets

The total addressable market is usually distinguished from narrower, more realistic measures nested within it. The serviceable addressable market is the portion the business can actually reach given its model, geography, and product. The serviceable obtainable market is the slice it can realistically capture given competition and its own capabilities. The progression from total to serviceable to obtainable moves from the theoretical maximum to a grounded estimate of what the business might actually win, and confusing the expansive total with the achievable obtainable is a common source of inflated projections.

Use and abuse

The total addressable market is essential for assessing opportunity and is central to how investors and founders evaluate ventures, since a business in a large market has far more room to grow than one in a small one. But it is frequently abused, inflated to make an opportunity look bigger than it is, by drawing the market boundaries generously or assuming a reach the business cannot achieve. A large addressable market is necessary for a big business but not sufficient, since capturing even a sliver of it requires winning real customers against real competition, which the headline figure conveniently ignores.

The total addressable market is the measure of the full opportunity a business is pursuing, the theoretical ceiling on how large it could become if it captured everyone. Indispensable for judging whether an opportunity is big enough to be worth chasing, it is also routinely inflated to flatter a venture, which is why the disciplined analysis distinguishes the expansive total from the serviceable and obtainable markets that reflect what a business can actually reach and win.