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Budget Calculator

Where your money goes, against the 50/30/20 rule.

Calculators Reviews Free · no sign-up

Needs

Wants

Savings and extra debt repayment

—

Your biggest expenses

Real change comes from the top of this list, not the bottom.

ExpenseMonthly% of incomePer year

Left over each month

—

Against 50 / 30 / 20

Needs (target 50%)—
Wants (target 30%)—
Savings (target 20%)—
Total income—
Total spending—
Savings rate—
Annual surplus—

Quick Tool Overview

The Budget Calculator turns your income and expenses into a monthly picture, groups spending into needs, wants and savings, and compares the split against the 50/30/20 benchmark — which is useful mainly because it fails loudly when something structural is wrong.

What it does
Builds a monthly budget and checks it against 50/30/20
You give it
Take-home income and every regular expense
You get back
What is left over and your needs, wants and savings percentages
Best for
Seeing where the money actually goes
Calculators Free, unlimited use No sign-up Runs in your browser

About the Budget Calculator

Enter your take-home income and every regular expense to see what is genuinely left at the end of the month. The calculator groups your spending into needs, wants and savings and compares the split against the 50/30/20 benchmark.

That framework is useful because it fails loudly. If needs alone consume seventy percent of income, no amount of cutting subscriptions fixes the problem and the answer lies in housing, transport or income instead. The calculator therefore shows each category as a percentage rather than only a total, ranks your largest expenses, and flags any that are unusually large relative to income — which is almost always more useful than a list of small savings.

Key features of the Budget Calculator

50/30/20 comparison

Needs, wants and savings as percentages of income, against the benchmark rather than in isolation.

Largest expenses ranked

Real change comes from housing and transport, not subscriptions, and the ranking makes that obvious.

Percentages, not just totals

A category is only large or small relative to income, which is what the percentage view shows.

Structural problems flagged

If needs alone exceed the benchmark, no amount of trimming fixes it — and the calculator says so.

Built on take-home pay

Net income, because budgeting on gross overstates what you have by a wide margin.

How to use the Budget Calculator

  1. 1

    Enter your take-home income

    Net monthly pay after tax, including any other regular income.

  2. 2

    List your expenses

    Housing, transport, food, insurance, debt payments, subscriptions and everything else.

  3. 3

    Check the category split

    Needs, wants and savings as percentages of income, against the 50/30/20 benchmark.

  4. 4

    Find the biggest lever

    The largest expenses are ranked, since that is where any real change has to come from.

Frequently asked questions

A budgeting guideline: fifty percent of take-home pay for needs, thirty percent for wants and twenty percent for savings and debt repayment. It is a benchmark for comparison rather than a target everyone can hit.

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