A startup’s target market should be narrow enough that customers share an important problem, buying situation, comparison set and route to purchase—but large and reachable enough to support the next stage of the business. Focus on a coherent starting market, not a permanent boundary. Narrow by evidence that changes how you sell or deliver, not by demographics that leave the customer’s needs unchanged.

Focus is about shared buying conditions

“Companies with 10–500 employees” sounds specific but can contain very different buyers and problems. A better segment might be “UK accountancy firms moving from annual to monthly advisory reporting”, because the situation changes priorities, alternatives and language.

The ideal customer guide explains how to combine firmographic facts with behaviour and context. For market selection, add four tests:

  • Common need: does the group recognise the same costly or urgent problem?
  • Common choice: do they compare similar alternatives and value similar strengths?
  • Reachability: can you identify and reach them through a repeatable channel?
  • Ability to serve: can the product and team deliver a strong experience without bespoke work each time?

The US Small Business Administration recommends examining demand, market size, saturation and pricing as part of market research. Those questions stop “focus” becoming a purely messaging-led decision.

Use an entry-market scorecard

List plausible segments, then score each from 1 to 5:

  1. Problem frequency and importance
  2. Trigger clarity
  3. Existing spend or effort
  4. Access to buyers and users
  5. Fit with current product capabilities
  6. Evidence already available
  7. Revenue potential within the planning horizon
  8. Strategic learning value

Write the evidence beside each score. A precise number based on a guess is still a guess.

Map the customer’s current options using the guide to competitive alternatives. If two groups use different alternatives and buy for different reasons, they probably need separate positioning even when the same product can serve both.

Illustrative example

Illustrative example: a scheduling product could serve all field-service companies. Early interviews show independent plumbing businesses mainly want easier appointment booking, while multi-site facilities contractors need job allocation, compliance records and client reporting.

The startup chooses facilities contractors with 20–100 field staff as its starting market because the urgent coordination problem matches the current product and the team can reach operations managers through two trade communities. It does not claim plumbers can never use the product. It chooses where to learn and compete first.

This is hypothetical. A real decision would require demand, product-fit and commercial evidence.

Signs the market is too broad

  • Homepage copy relies on “for businesses of all sizes”.
  • Sales demonstrations change completely for every prospect.
  • Customers disagree about the core problem and most valuable outcome.
  • The team needs several unrelated channels to find buyers.
  • Product requests pull the roadmap in opposing directions.

Signs the market may be too narrow

  • Very few prospects experience the problem often enough to buy.
  • The reachable audience cannot support the business model.
  • The segment depends on a temporary condition.
  • Serving it requires costly exceptions that cannot be repeated.
  • The definition uses so many filters that no meaningful sample remains for research.

Use positioning validation before assuming a smaller segment is automatically better. Focus should improve relevance and repeatability, not create an artificial sense of exclusivity.

Expand deliberately

Expand when the starting market produces consistent evidence: customers understand the offer, the same use case drives purchase, delivery is repeatable and adjacent demand appears. Test one adjacent segment at a time. Record what remains true and what changes across audience, alternatives, value and channels.

An entry market can be communicated honestly without making a permanent promise. “Built for multi-site facilities teams” is clearer than “the only platform every field business needs”.

Limitations and trade-offs

A narrow focus can exclude near-term revenue and make investors or colleagues uncomfortable. It can also lead to overfitting if early customers are unrepresentative. A broad approach preserves optionality but raises acquisition costs and weakens learning because every sale may follow a different pattern.

Market data describes opportunity; it does not guarantee access. Balance published estimates with direct evidence from reachable buyers.

Frequently asked questions

Is a niche the same as a small market?

No. A niche is a group with a distinct need or buying context. It can be commercially substantial, and a numerically small audience can still be incoherent.

Will focused positioning repel other buyers?

It may, and that can be useful. Some adjacent buyers will still recognise the value. Monitor qualified demand rather than trying to avoid every exclusion.

When should a startup broaden its target market?

Broaden after achieving repeatable demand and delivery in the starting market, or when evidence shows an adjacent group shares the same core problem and buying logic.

Your useful next step

Choose three plausible starting segments and complete the eight-part scorecard with evidence. Interview people from the leading segment, then define a 90-day acquisition and learning test with explicit success and stop conditions.

Publication note: This guide is published by To-Do Growth and reviewed under our Editorial Policy. Illustrative examples are labelled and are not presented as customer case studies.