Net Present Value and IRR

What this topic is

NPV (net present value) converts a project's future cash flows into today's dollars using your cost of capital, then subtracts the investment: positive means value created. IRR (internal rate of return) asks the same question backwards: what return rate does this project actually earn?

Why it matters

These two numbers are how real capital decisions get made. Roughly three-quarters of CFOs use them on virtually every project. Understand them and you can read any investment proposal; misunderstand IRR and you can be confidently wrong in expensive ways.

Who should learn it

Anyone who proposes, evaluates, or approves spending: managers, analysts, students, and owners weighing where money goes next.

What you will understand

• Discount future cash to today and know why
• Read an NPV: what positive, zero, and negative mean
• Use IRR properly, and spot its three famous traps
• Choose between NPV and IRR when they disagree

Prerequisites

• Free Cash Flow versus Net Income
• Value Creation Attribution: How Much Came From Growth, Margin, and Multiple

Common misconception

"The project with the higher IRR is the better project." Not necessarily. IRR ignores SIZE. A $10K project at 40% creates less value than a $10M project at 15% when your capital costs 9%. NPV measures dollars of value created; IRR only measures the rate. When they disagree, trust NPV.