What Commercial Diligence Should Answer Before IC

Commercial diligence is often treated as a research exercise.

It should be treated as a decision exercise.

By the time an investment reaches IC, the team rarely needs more information for its own sake. It needs a clear view of which parts of the commercial thesis hold, which remain uncertain, and which could materially change the investment decision.

That distinction matters.

A market can be large and still be unattractive. Customer demand can be real without supporting the growth case. A company can have differentiated technology without possessing a defensible competitive position.

The purpose of diligence is to separate those questions.

Start with the investment thesis

The most useful commercial diligence begins with the assumptions already embedded in the deal.

What has to be true for the return case to work?

That may include assumptions around:

• market growth

• customer retention

• pricing power

• competitive position

• penetration

• expansion

• sales efficiency

Each assumption should become a question that evidence can support, weaken, or invalidate.

This creates a different research process.

Instead of collecting everything that can be known about the market, the work becomes focused on what must be understood before capital is committed.

Market size is only one input

A large TAM is not a conclusion.

The important questions are usually more specific:

How much of that market is genuinely accessible?

How quickly is demand changing?

What customer behavior supports the forecast?

Where is value concentrated?

What has to happen operationally for the company to capture it?

A useful market view connects scale to actual commercial mechanics.

Evidence should converge

No single source should carry the investment case.

Management data, customer behavior, competitive signals, market research, filings, hiring activity, pricing, and external data each tell part of the story.

The objective is to understand where those signals reinforce one another—and where they do not.

The strongest diligence outputs make that distinction visible.

Uncertainty should remain visible

A good recommendation does not pretend every question has been answered.

Some conclusions will be strongly supported.

Others may remain conditional.

The important thing is to know the difference.

IC should be able to see:

• what appears proven

• what remains uncertain

• what could change the conclusion

• where additional work is justified

That is more valuable than a report that gives every question equal weight.

The output is a decision

Commercial diligence should ultimately answer:

Does the commercial case hold strongly enough to support the investment thesis?

Everything else is supporting evidence.

The output is not the amount of research completed.

It is the quality of the answer the investment team can defend.