Budget Calculator UK: 50/30/20 Rule
On £2,500 take-home pay a month, the 50/30/20 rule suggests £1,250 for needs, £750 for wants, and £500 for savings and debt repayment. Enter your net income and optional actual spending to see how your budget compares with each target.
Figures verified against Bank of England base rate on .
Written by James HartleyCIMA
Calculator
Your take-home pay after tax and National Insurance.
Actual monthly spending (optional)
Rent, bills, food, transport, minimum debt payments.
Eating out, subscriptions, hobbies, holidays.
Savings plus any extra debt repayments.
Needs (50% target)
£1,250.00
Wants (30% target)
£750.00
Savings and debt (20% target)
£500.00
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How the 50/30/20 rule works
The 50/30/20 rule splits your take-home pay into three buckets: 50 percent for needs, 30 percent for wants, and 20 percent for savings or paying down debt beyond the minimum. Enter your net monthly income and the calculator shows the suggested amount for each category.
For a fuller guide to building a household budget, see our household budget UK guide. The savings portion can include building an emergency fund, and if you are comparing borrowing options, try the personal loan calculator on the personal finance hub.
Comparing targets with actual spending
Optionally enter what you actually spend on needs, wants, and savings each month. The calculator shows the difference against each target so you can see where you are over or under. Needs and wants that exceed their targets leave less room for saving; savings below 20 percent may mean you need to trim wants or review essential costs.
This is general information, not financial advice. High housing and energy costs mean many UK households need a different split, and that is fine. The value is in giving every pound a job, then adjusting the percentages to fit your life.
Frequently Asked Questions
It is a simple way to split your take-home pay: 50 percent on needs, 30 percent on wants, and 20 percent on savings or paying down debt. It gives a quick structure for managing money without tracking every single transaction.
Needs are essentials you must pay to live and work, such as rent or mortgage, utilities, food, transport, and minimum debt payments. Wants are non-essential lifestyle spending, such as eating out, subscriptions, hobbies, and holidays.
Use your net income, your take-home pay after tax and National Insurance, because that is the money you actually receive and can allocate. Budgeting on gross income overstates what you have to spend.
That is common where rents are high. Treat the percentages as a target rather than a rule: trim wants, look for savings on essentials, and aim to keep some saving going even if it is below 20 percent while you rebalance.
The minimum payments on debts sit within needs, but any extra you pay to clear debt faster counts in the 20 percent alongside savings. Clearing high-interest debt is usually the priority within that portion.
A common target is three to six months of essential outgoings, built up gradually within the savings portion. Having this buffer helps you avoid borrowing when an unexpected cost arrives.
It works as a starting framework, but high housing and energy costs mean many households need to adjust the split. The value is in giving every pound a job, then tailoring the percentages to your own situation.
Review it monthly at first, then at least when your income or major costs change. Regular checks catch overspending early and let you redirect money towards savings or debt as your circumstances shift.
Related Calculators
View allEmergency Fund Calculator
Work out how much to keep in reserve within your savings portion.
Debt Repayment Calculator
Plan paying down debt alongside your monthly budget.
Savings Calculator
See how regular saving within the 20 percent portion adds up.
Net Worth Calculator
Track assets and liabilities alongside your budget.
Related Guides
Household Budget UK: The 50/30/20 Method
Build a monthly budget from take-home pay and split needs, wants, and savings.
Read guideEmergency Fund UK: How Much to Save and Where to Keep It
Three to six months of essentials in an easy access account.
Read guideCredit Card Minimum Payments: The True Cost
Why minimum payments can cost thousands in interest over many years.
Read guideWas this calculator helpful?
Official Rates Used
This calculator uses official HMRC rates for 2026/27. View the current rates at GOV.UK:
Rates last verified:
Disclaimer: This calculator provides estimates based on standard HMRC rates for 2026/27. Results may vary based on individual circumstances. This is not financial advice. Always consult a qualified accountant or CIMA-qualified financial adviser for personal tax matters.