Why benefit-cost ratio (BCR) matters to a first-time founder
The benefit-cost ratio, or BCR, compares a project’s expected benefits with its expected costs, usually using present values so future amounts are converted into today’s terms. A ratio above 1 indicates quantified benefits exceed quantified costs. The result helps compare projects, but it depends heavily on assumptions and what is included.
Examples of benefit-cost ratio (BCR)
A Colombian manufacturer considers equipment with present-value benefits of COP 780 million and present-value costs of COP 600 million. Its BCR is 1.3: 780 divided by 600. On the model’s assumptions, each peso of cost produces COP 1.30 of benefit, but the founder still tests downtime, demand and maintenance estimates.
Common misunderstanding
A BCR of 1.3 does not mean a 30% accounting profit or guaranteed return. It is a ratio of modelled benefits to costs, often discounted over time. Different conventions may place some costs in the numerator as negative benefits, and hard-to-price effects can be omitted, so methods must be consistent.
When to use it
Use BCR for project appraisal when benefits and costs can be estimated on a comparable basis, especially when choosing among constrained public or business investments. State the time horizon, discount rate and included effects. Pair the ratio with net value, risk, affordability and non-financial impacts rather than selecting the highest ratio automatically.