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Budget Calculator

Plan your money with the 50/30/20 rule. Enter your take-home pay, tweak the split, then log your actual spending to see where you are over or under in each category.

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Needs

Recommended $0 · Actual $0 · -

Wants

Recommended $0 · Actual $0 · -

Savings

Recommended $0 · Actual $0 · -

Actual split

Needs
Wants
Savings
Unallocated
$0
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Guide

What is the 50/30/20 budget rule?

The 50/30/20 rule is a simple framework for splitting your take-home (after-tax) pay into three buckets: 50% to needs, 30% to wants, and 20% to savings and debt repayment. Popularised by Senator Elizabeth Warren, it is intentionally easy to remember, which is exactly why it works: a budget you can keep in your head is a budget you will actually follow. This calculator applies the split to your income, then lets you log real spending so you can see where you are over or under in each bucket.

Needs vs. wants vs. savings

  • Needs (50%): rent or mortgage, utilities, groceries, insurance, minimum loan payments, transport to work. These are bills you cannot skip without serious consequences.
  • Wants (30%): dining out, streaming, hobbies, travel, upgrades. Nice to have, but life goes on without them.
  • Savings and debt (20%): emergency fund, retirement contributions, investments, and extra payments above the minimum on any debt.

The grey area is real. A car is a need; a luxury car payment is partly a want. A phone is a need; the most expensive plan is a want. When something is mixed, split it across buckets rather than forcing it into one.

What if your needs are over 50%?

In high-cost cities, housing alone can push needs well past half your income. If that is you, treat 50/30/20 as a direction rather than a hard rule: aim to protect the savings bucket even if you have to shrink wants to near zero for a while. Longer term, the biggest levers are housing, transport, and income itself, since small categories rarely move the total much.

Budgeting with irregular income

Freelancers and commission earners can still use this method by budgeting against a conservative baseline, for example your lowest typical month. In good months, route the surplus straight into the savings bucket so it smooths out the lean ones. Revisit your plan whenever your income or fixed costs change, and at least once a quarter otherwise.

This calculator is for general budgeting guidance and is not financial advice.

Last updated: July 2026

Frequently Asked Questions

What is the 50/30/20 rule?
The 50/30/20 rule is a simple budgeting framework: spend 50% of your take-home income on needs, 30% on wants, and 20% on savings and debt repayment. It is a starting point you can adjust to your situation.
Can I customize the percentages?
Yes. The sliders default to 50/30/20, but you can set any split that adds up to 100%. The calculator instantly recalculates the recommended amount for each category from your income.
What counts as a "need" vs. a "want"?
Needs are essential expenses you cannot easily avoid - housing, utilities, groceries, insurance, and minimum debt payments. Wants are discretionary - dining out, subscriptions, travel, and hobbies. When unsure, ask whether you could go without it for a few months.
How do I budget with irregular income?
Base your budget on a conservative estimate of your average monthly income, or on your lowest typical month. In higher-earning months, direct the surplus to savings or debt so lean months are covered.
What if my needs exceed 50%?
In high-cost areas this is common. Reduce the savings or wants percentage temporarily, then work to lower fixed costs or raise income. The framework is a guideline, not a hard rule - the goal is a plan you can sustain.
How often should I revisit my budget?
Review your budget monthly to compare actual spending against your plan, and adjust whenever your income or fixed expenses change. Regular check-ins keep the budget realistic and useful.