The short answer: start with the calculator that matches your question. The budget calculator shows what is left each month and your 50/30/20 split, the debt payoff calculator gives a debt-free date, and the compound interest calculator shows a year-by-year balance.

Free tools

How to use this page

Every calculator here is free. For the reasoning behind the numbers, read budgeting basics and paying off debt. All our tools are on the free tools and calculators page.