Cost Benefit Analysis Calculator

Sum of Total Expected Benefits ($):
Sum of Total Associated Costs ($):


About Cost Benefit Analysis Calculator (Formula)

Cost-Benefit Analysis (CBA) is a powerful decision-making tool used in economics to systematically assess the pros and cons of a project or policy by quantifying and comparing its costs and benefits. The CBA process involves identifying and measuring all relevant costs and benefits, both in monetary and non-monetary terms, and then determining whether the project or policy is economically justified.

A CBA Calculator simplifies this complex analysis, making it accessible to businesses, governments, and individuals, as it helps determine if an investment or decision will deliver a positive net benefit to society or a company. The fundamental formula for conducting a cost-benefit analysis is as follows:

Net Present Value (NPV) = Total Benefits – Total Costs


  • Net Present Value (NPV) represents the overall economic profitability of the project or policy. A positive NPV indicates that the benefits outweigh the costs, while a negative NPV suggests the opposite.
  • Total Benefits include all positive outcomes resulting from the project or policy. These benefits can be in the form of increased revenue, reduced expenses, or other positive impacts such as improved health or reduced pollution.
  • Total Costs encompass all expenses associated with the project or policy. These costs may include initial investments, ongoing operational expenses, and any negative externalities like environmental damage or health risks.

To make this formula applicable over time, it accounts for the time value of money, considering that a dollar received or spent in the future is worth less than a dollar received or spent today. Therefore, future costs and benefits are discounted to their present value using an appropriate discount rate.

In addition to NPV, CBA can involve calculating other important metrics such as:

  1. Benefit-Cost Ratio (BCR): BCR is calculated as Total Benefits divided by Total Costs. A BCR greater than 1 indicates that the benefits outweigh the costs.
  2. Return on Investment (ROI): ROI is calculated as (Net Profit / Total Investment) x 100%. It measures the return generated for each dollar invested.
  3. Internal Rate of Return (IRR): IRR is the discount rate at which NPV equals zero. It represents the project’s effective interest rate or annualized return.
  4. Sensitivity Analysis: This involves testing the project’s sensitivity to changes in key variables, such as costs, benefits, or discount rates, to assess its robustness under different scenarios.

A Cost-Benefit Analysis Calculator streamlines this process, allowing users to input relevant data, including costs, benefits, and discount rates, to calculate these essential metrics and make informed decisions. It is a vital tool for policymakers evaluating public projects, businesses assessing investment opportunities, and individuals making major financial choices. By quantifying the economic impact of decisions, a CBA Calculator helps ensure resources are allocated efficiently and effectively, ultimately leading to better economic outcomes.