Market penetration has two common meanings. As a metric, it is the share of potential customers in a defined market who use a product. As a strategy, it means growing by selling more of an existing product to an existing market, rather than launching new products or entering new markets. For SaaS companies, it is usually the first and lowest-risk growth path.
Measuring penetration
The denominator matters. Measuring against total addressable market gives a small number that changes slowly. Measuring against a well-defined serviceable segment gives a more useful view of how much room is left where the company already competes.
Market penetration rate = current customers in segment ÷ total potential customers in segmentPenetration as a growth strategy
Penetration strategies focus on winning more of the same kind of customer. Common tactics include improving conversion, covering more of the searches the target market makes, competing harder against specific rivals, adjusting pricing, and encouraging referrals.
- Cover the commercial and problem-led queries your segment searches for.
- Publish comparison and alternatives content against the competitors you meet most.
- Use customer stories from the same segment as social proof.
- Grow referral and review programs within the segment.
Signals of saturation
When penetration is high in a segment, growth slows and acquisition costs often rise, because the easiest customers have already been won. Flattening search impressions on core segment queries, rising competition for the remaining accounts and fewer new names appearing in pipeline can all be signs. At that point, companies usually look at adjacent segments or new products.
Example
Deepening a vertical
Hypothetical company Ashworth Field sells software to veterinary clinics in one country. It estimates, from a public register, how many clinics exist and how many it serves. Before entering a second country, it focuses on winning more domestic clinics through comparison pages, a referral program and a regional events partnership, tracking penetration by region.
Common mistakes
Using an inflated denominator
Comparing customers against a huge, loosely defined market makes penetration look tiny and growth look easy.
Questions
Market share compares your sales with competitors' sales. Market penetration compares your customers with all potential customers, including those using no product at all.
