MathIsimple

IRR Calculator

Calculate internal rate of return (IRR) for capital projects, real estate, and private equity investments. Build a cash flow timeline, compute IRR, and review net present value (NPV) at a 10% discount rate.

Free online calculator Investment analysis Cash flow modeling

Cash flow inputs

Enter initial investment (negative) and annual net cash flows.

Investment Metrics

Use negative values for investments/outflows and positive for returns/inflows.

How to use this IRR calculator

Enter initial investment as a negative number and add projected cash inflows for each year. Click “Calculate IRR” to see internal rate of return and NPV metrics.