How should an investor evaluate a capital-efficient company?

Evaluate whether the company can turn customer demand into durable cash generation without assuming that a later investor will fund every milestone. Test the evidence behind the revenue model, contribution margins, customer commitments, and repayment capacity, rather than rewarding low spending in isolation.

Use the numbers as questions

Chapter 13 recommends talking directly to three to five customers; Chapter 6 uses eight operating metrics to connect revenue and margin to cash and runway. These are the book’s diligence practices, not a statistically sufficient sample or an investment guarantee.

One concrete underwriting cross-check in Chapter 6 is Lighter Capital’s requirement for recurring revenue from four or more customers. That makes concentration relevant to available financing, even when a founder accepts the concentration commercially. Current provider criteria, checked October 30, 2026.

Worked example: the margin is not the cash

Illustrative assumptions. Two companies each report $1 million in annual revenue at a 50% gross margin. Company A collects before production and pays its supplier later. Company B pays for inventory upfront and collects after acceptance. The same $500,000 gross profit can support very different working-capital requirements.

Ask each company for a monthly cash forecast and test a major customer paying 60 days late. The investment question is not which company presents the higher gross margin; it is whether the operating model can absorb that delay and what capital would actually finance the gap.

Verify the mechanism

Call customers about renewal and expansion, inspect payment terms, reconcile forecasts to actual cash, and identify which non-dilutive sources are genuinely available. Distinguish efficiency created by repeatable operations from underinvestment, deferred bills, or one exceptionally accommodating customer. Equity may accelerate a strong model, but it should not conceal an unresolved operating deficit.

This page is an original summary of an argument developed in Speedstrap, not an extract from the book.

From Chapter 13 of Speedstrap. Find the book on Amazon.

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