Calculate net present value
Calculating net present value sums each cash flow divided by (1 + r)^t for period t starting at zero. The NPV Calculator parses the cash-flow list and applies that discounting. A series of -1000, then 400 four times, at 10% per period yields NPV about $267.95 in the reference fixture.
QuickCalculators reports the total and flags a positive result as value-adding at the chosen rate.
Use a rate that matches the period of the cash flows (annual rate with annual flows, for example).
Discount each cash flow to today
Discounting each cash flow to today shows how distant inflows shrink. The NPV Calculator lists present value by period beside the undiscounted amounts. Later cash flows fall more under a higher rate. Early outflows (often negative at t = 0) carry full weight.
QuickCalculators keeps the period table so one large distant inflow is not mistaken for equal present value.
Sign convention matters: invest as negative, returns as positive, unless the model is reversed intentionally.
Read a positive or negative NPV
Reading a positive or negative NPV turns the sum into a decision signal at the stated rate. The NPV Calculator marks positive when the sum exceeds zero and negative otherwise. Positive NPV does not guarantee outcomes; it only says the modelled cash flows beat the discount rate.
QuickCalculators labels the result as an estimate tied to the inputs, not a forecast of actual markets.
Compare related tools such as the Future Value Calculator and Finance Calculator on QuickCalculators for other TVM views.
Read the disclaimer
QuickCalculators labels NPV Calculator results as estimates for information only. The NPV Calculator is not investment advice. Discount rates and cash-flow forecasts are assumptions. Confirm with a professional before committing capital.
Correct a common misconception: NPV ignores the timing of cash flows
A common misconception is that NPV is just a sum of cash flows without timing. NPV discounts each flow by period. The NPV Calculator shows period present values so timing stays visible.
Frequently asked questions
How is NPV calculated?
NPV is calculated as the sum of CF_t / (1 + r)^t for each period t. The NPV Calculator applies that formula to the cash flows entered.
What does a positive NPV mean?
A positive NPV means the discounted cash flows add value at the chosen discount rate. The NPV Calculator flags that case when the sum is above zero.
What cash flow format does the NPV Calculator use?
The NPV Calculator uses comma-separated values, with the first amount usually the initial outflow (often negative). Periods follow in order.
What discount rate should be used?
The discount rate should reflect the required return or cost of capital for the project's risk and period length. The NPV Calculator takes that rate as an input rather than choosing it.
Is NPV the same as profit?
NPV is not the same as accounting profit. NPV is a discounted present-value sum; profit follows book rules without that discounting.
Summarize the NPV Calculator
The NPV Calculator discounts comma-separated cash flows at a stated rate, sums them to net present value, and shows each period's present value. QuickCalculators keeps the arithmetic exact and labels the output as an educational estimate, not investment advice.