50/30/20 Budget Calculator

One rule, three buckets, zero spreadsheets

Most budgets fail because they're exhausting — dozens of categories, daily tracking, and a guilt trip every time you buy a coffee. The 50/30/20 rule, popularized by Senator Elizabeth Warren in her book All Your Worth, throws all that out in favor of three simple buckets. Take your monthly take-home pay and aim to spend no more than 50% on needs, up to 30% on wants, and at least 20% on savings and extra debt payments. That's the whole system. It's flexible enough to live with and structured enough to actually move you forward.

The art is in sorting your spending honestly. Needs are the things you genuinely can't skip: housing, groceries, utilities, insurance, minimum debt payments, transportation to work. Wants are everything that makes life nicer but isn't essential — restaurants, streaming services, travel, the upgraded phone, hobbies. The line can blur (a car is a need, but the luxury trim is a want), and that's fine; the goal is awareness, not perfection. The final 20% is the bucket that builds your future: emergency fund, retirement contributions, investments, and any debt payoff beyond the minimums. Treat that 20% as a bill you pay yourself first, automatically, before the money can drift into the other two buckets.

Use the optional fields above to enter what you actually spend on needs and wants, and the calculator will tell you whether you're inside the lines or over budget — and how much is genuinely left for savings. If your needs already eat more than half your income, you're not alone, especially in high-cost cities; the rule then becomes a target to grow into by raising income or trimming fixed costs over time. And if you can push savings above 20%, even better — that's the single fastest lever for building wealth and buying yourself freedom down the road.