The 50/30/20 rule is the simplest budget that actually works: 50% of your take-home pay for needs, 30% for wants, and 20% for savings and debt. Enter your monthly income to get your three spending targets — and optionally check how your real spending stacks up.
Needs · Wants · Savings
Optional — enter what you actually spend to see if you're on track:
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.
Rent, groceries, utilities, insurance, transport, minimum debt payments — the essentials you can't skip.
Dining out, subscriptions, travel, hobbies — the lifestyle spending that's nice but not essential.
Emergency fund, retirement, investments, and extra debt payoff. Automate it so it happens first.
The 50/30/20 rule allocates after-tax income across three buckets: half to needs, three-tenths to wants and a fifth to saving and debt repayment beyond minimums. Its value is not precision but simplicity — it gives a defensible starting allocation without line-item tracking, which is why it survives where detailed budgets are abandoned. The judgement lies entirely in classification: a car is a need, the model is a want; groceries are a need, restaurants are not. In high-cost housing markets the 50% needs bucket is frequently impossible, and the honest response is to adjust the ratios rather than reclassify wants as needs.
Needs = Take-home pay × 50%Wants = Take-home pay × 30%Savings and extra debt repayment = Take-home pay × 20%where:
Assumptions: A guideline, not a rule. Retirement contributions deducted before pay arrives are already saved and should be counted toward the 20% rather than ignored, or the target is overstated.
Allocate a real monthly income, then test it against actual spending.
ResultTarget $2,600 / $1,560 / $1,040 — actual saving falls $240 short
The overspend is in needs, not wants, which points at housing rather than discretionary habits — a much harder thing to change quickly. Recognising that distinction is the point of the exercise: cutting restaurant spending would not close a gap caused by rent.