What is the Internal Rate of Return (IRR)?

IRR is the annual rate of return that makes the present value of all cash flows (both positive and negative) from a project equal to zero. It represents the 'effective interest rate' of an investment.

Why is an 'Initial Guess' needed?

The IRR formula cannot be solved with basic algebra; it requires an iterative numerical method. Providing a starting guess (like 10%) helps the computer find the correct answer faster and more reliably.

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Finance

IRR Calculator - Internal Rate of Return

Calculate the Internal Rate of Return (IRR) to estimate the profitability of potential investments. Find the 'break-even' discount rate for your cash flows.

The Internal Rate of Return (IRR) is a sophisticated metric used to estimate the annual growth rate an investment is expected to generate. Unlike NPV, which gives you a dollar value, IRR gives you a percentage. It is specifically defined as the discount rate that would make the Net Present Value (NPV) of all cash flows equal to exactly zero. Corporations use IRR to compare different capital projects, often only proceeding if the IRR exceeds a certain 'hurdle rate'. Our IRR Calculator handles the complex trial-and-error math required to find this rate, giving you a clear picture of your investment's expected yield.

Cash flows (comma-separated, starting at t=0)

Example: -10000, 3000, 3000, 3000

Initial guess (%)

IRR (approx.)

15.2382%

Internal Rate of Return is 15.2382%

Cash Flows-10000, 3000, 3000, 3000, 3000, 3000

Initial Guess10%

How it Works

This tool uses the Newton-Raphson method or a similar iterative algorithm. It starts with your guess and repeatedly adjusts the rate until the resulting NPV is virtually zero, pinpointing the true Internal Rate of Return.

Calculation Formula

The rate 'r' where NPV = 0

Calculation Examples

1. **Simple Yield**: Invest $10,000 and get $3,000 back every year for 5 years. The IRR is **15.24%**.

Why use this tool in your daily life?

Find your true yield. This tool allows you to see the effective 'interest rate' your projects are generating, helping you identify which opportunities are most efficient at growing your capital.