How Money Works

Key money ideas, answered with real-life questions

Each concept starts with an everyday question, lets you change the numbers, then explains the idea underneath.

Lesson 1 · Time value of money

You win the lottery. How much do you actually take home?

Take the cash now or 30 yearly payments? See why a dollar today is worth more than a dollar later.

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Coming next

Lesson 2 · How taxes work

Why is your raise smaller than it looks?

Compound interest

How long until your savings double?

Inflation

What will $100 buy in 20 years?

Interest on debt

Why does a credit card balance grow so fast?