Net Present Value Calculator
Find the NPV of a project from the initial investment, discount rate, and year-by-year cash flows.
What this calculator does
The Net Present Value Calculator estimates your result instantly from the values you enter, using standard investing & wealth formulas. Find the NPV of a project from the initial investment, discount rate, and year-by-year cash flows. Calculations run in your browser, so nothing you type is sent to a server, and the output is an estimate for planning rather than financial advice.
Result
About Net Present Value Calculator
The Net Present Value Calculator discounts a project's future cash flows back to today and subtracts the initial investment, so you can see whether the project adds value at your chosen discount rate. You enter the upfront investment, the discount rate, and the yearly cash flows, and it returns the net present value.
NPV is the standard capital-budgeting test: a positive figure means the discounted inflows more than cover the initial outlay, while a negative figure means they do not. Because each year's cash flow is discounted more heavily than the last, the timing of the inflows matters as much as their size. The calculator applies that discounting directly to the cash flows you provide.
Enter the initial investment, the discount rate, and the comma-separated yearly cash flows, press Calculate, and read the net present value.
Formula & Mathematical Calculation
Calculation Method
- Compute init=g('init'),r=g('r') ÷ 100,cf=nums('cf')
- Compute } npv=-init
Calculation Example
With a $100,000 initial investment, a 10% discount rate, and yearly cash flows of 30,000, 40,000, 50,000, 40,000, the discounted inflows total about $125,216.86, so the net present value is roughly $25,216.86 — a value-adding project.
Key Benefits
- Discounts each year's cash flow and nets it against the initial investment.
- Shows whether a project adds value at the discount rate you choose.
- Reflects the timing of cash flows, not just their total size.
- Accepts any number of yearly cash flows entered as a comma-separated list.
How to Use this Calculator
-
Enter the initial investment
Type the upfront outlay in the Initial Investment field, for example 100000. -
Enter the discount rate
Type your required discount rate as a percentage in the Discount Rate field, for example 10. -
Enter the yearly cash flows
Type the cash flow for each year as a comma-separated list in the Cash Flows field, for example 30000, 40000, 50000, 40000. -
Press Calculate
The tool discounts each year's cash flow, sums them, and subtracts the initial investment to return the net present value.
Assumptions & Limitations
What the calculation assumes
- Every value you enter is treated as an exact, known amount.
- Rates and contributions are assumed to stay constant for the whole period unless the form asks for them separately.
- Results use standard financial formulas and ignore fees, penalties and promotional terms that are not entered above.
- Inflation, tax changes and market volatility are not modelled unless a field for them is provided.
- Amounts are unit-agnostic: results are returned in the same currency you enter.
What it does not cover
- Net Present Value Calculator produces estimates for education and planning, not a quote, offer or professional advice.
- Real-world outcomes differ when fees, taxes, rounding rules or provider-specific terms apply.
- Local regulations and tax rules vary by country and change over time; verify current rules for your jurisdiction.
- Figures are only as accurate as the inputs you supply — check them before acting on the result.
- For decisions with lasting financial impact, confirm the numbers with a qualified professional.
Frequently Asked Questions
Free to use, no account needed. Calculations run in your browser, so nothing you type is sent to a server. Results are estimates — how we build and check our calculators.
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