Why cost-benefit analysis matters to a first-time founder
A cost-benefit analysis makes assumptions visible before a founder commits money or time. It puts expected gains beside financial and non-financial costs, helping teams compare options on the same basis. The result is only as useful as the estimates, time period, and risks included, so uncertainty should be shown.
Examples of cost-benefit analysis
A support tool costs ¥600,000 a year and should save 20 staff hours each month. At ¥3,500 per hour, the annual benefit is ¥840,000. Net benefit is ¥840,000 minus ¥600,000, or ¥240,000. The benefit-cost ratio is ¥840,000 divided by ¥600,000, or 1.4, before implementation risk.
Common misunderstanding
This analysis is not a promise that the highest calculated number will occur. Estimates may omit disruption, risk, customer trust, or benefits that cannot be priced sensibly. It also differs from a budget: a budget allocates resources, while a cost-benefit analysis compares whether an option appears worthwhile.
When to use it
Use it before a substantial hire, tool purchase, launch, or process change when alternatives can be estimated. State the time horizon and test optimistic and pessimistic cases. For long projects, future amounts may need discounting to present value; the appropriate discount rate depends on context, risk, and organisational policy.