Cost-Benefit Analysis Calculator
Evaluate public projects with NPV, benefit-cost ratio, payback period, and internal rate of return.
Inputs
Results
Net Present Value (NPV)
$2,361,774
IRR (%)
16.7%
Benefit-Cost Ratio2.18
Payback Period (years)5.7
How to Use This Calculator
- Enter the Total Project Cost and the estimated Annual Benefit in dollars.
- Enter the Social Discount Rate (OMB recommends 3–7% for public projects) and Project Life in years.
- Review the Net Present Value (NPV) — a positive NPV means benefits exceed costs in present-value terms.
- Check the Benefit-Cost Ratio: values above 1.0 indicate the project is economically justified.
- Use Payback Period and Internal Rate of Return (IRR) to compare alternative projects.
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