Monthly budget split.
Needs
—
Wants
—
Savings
—
Worked example
Say your monthly take-home pay is £2,800. The 50/30/20 rule splits that into £1,400 for needs, £840 for wants, and £560 for savings and extra debt repayment. The needs bucket covers rent or mortgage, council tax, utility bills, food, and minimum debt payments. Wants are the discretionary spending such as eating out, subscriptions, and holidays. Keeping the savings line at £560 a month adds up to £6,720 a year, which is how an emergency fund and longer-term investing get built. In higher-rent UK cities the needs share often runs above 50 percent, so the framework is a starting point you adjust rather than a strict rule.
| Bucket | Monthly |
|---|---|
| Needs (50%) | £1,400 |
| Wants (30%) | £840 |
| Savings (20%) | £560 |
| Take-home pay | £2,800 |
How it is calculated
The tool takes your monthly take-home pay, the figure after income tax, National Insurance, pension, and student loan, and multiplies it by each category percentage to show the pounds you can spend in each bucket. The default 50/30/20 split is a well-known budgeting framework, but the percentages are editable so you can model your own targets. If the three figures do not add up to 100 percent, the tool flags it so your budget stays balanced. It uses net income rather than gross because you can only budget money that actually reaches your account. The annual savings line projects the savings bucket across twelve months to show what consistent saving builds over a year. Use your take-home pay calculator first to get the net figure, then split it here.