Net Present Value (NPV) Calculator

NPV is the difference between the present value of future cash inflows and the initial investment. A positive NPV means the investment creates value beyond the required rate of return; a negative NPV means it destroys value.

The discount rate should reflect the opportunity cost of capital or the required rate of return. For businesses, this is often the Weighted Average Cost of Capital (WACC). For personal decisions, it can be the return you could earn on a comparable investment.

Any positive NPV indicates a value-creating investment. A higher NPV is better. When comparing mutually exclusive projects, choose the one with the higher NPV. A zero NPV means you earn exactly your required rate of return.

NPV gives a dollar value of the investment's surplus value, while IRR gives a percentage return. NPV is generally considered more reliable for decision-making because it accounts for the scale of investment and assumes reinvestment at the discount rate.

NPV assumes cash flows are known in advance, which is rarely true. It is sensitive to the discount rate chosen — small changes can flip the decision. It also does not account for qualitative factors like strategic value or flexibility.

Yes. NPV can help evaluate education investments, real estate purchases, or any decision involving upfront costs and future benefits. The key is choosing a meaningful discount rate that reflects your personal cost of capital or opportunity cost.