Investment appraisal

Net present value (NPV) calculator

NPV converts future cash flows into today's money using a discount rate, then subtracts the upfront cost. A positive NPV means the project beats the return you demanded.

Inputs

Result

Net present value

USD 10,253.17

Present value of cash flows
USD 260,253.17
Profitability index
1.04x
Discounted payback
5.7 years
Verdict
Creates value at this discount rate
  • The discount rate is the assumption to stress-test first — small changes move NPV a long way.

How to use this calculator

  1. 1Enter the upfront investment and the annual cash flow it generates.
  2. 2Set an annual growth rate for those cash flows and a discount rate.
  3. 3Choose the project horizon in years.

Choosing the discount rate

Use your weighted average cost of capital as a floor, then add a premium for project-specific risk. Private SME projects commonly discount at 15-30%.

The rate does the heavy lifting: at 10%, a cash flow ten years out keeps 39% of its value; at 25% it retains just 11%.

Reading NPV alongside IRR

NPV tells you how much value is created in currency. IRR tells you the rate of return. Where projects compete for limited capital, rank by profitability index — NPV per unit invested — rather than by NPV alone.

A project with positive NPV but a discounted payback beyond your funding horizon can still be unaffordable, which is why the payback line here matters.

Call this tool from the API

Every calculator on this site is also an endpoint. Get a free key from the developer page and call it from your product, spreadsheet or AI agent.

curl -X POST https://utopiavalue.co/api/v1/tools/npv-calculator \
  -H "Authorization: Bearer $UTOPIA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"initialInvestment":250000,"annualCashFlow":70000,"cashFlowGrowthPercent":3,"discountRatePercent":18,"years":6,"currency":"USD"}'

Frequently asked questions

What discount rate should a small business use?

Start with your blended cost of debt and equity. Most owner-operated businesses land between 15% and 30% once risk is priced in.

Should I include a terminal value?

Only if the asset genuinely has value at the end of the horizon. This tool models the explicit period; add residual value to the final year cash flow if relevant.

Is a positive NPV always a green light?

It clears the financial hurdle, but capacity, risk concentration and cash timing still decide whether to proceed.