Enter your take-home pay and monthly expenses to see your spending breakdown, savings rate and budget health — using the UK-adapted 50/30/20 rule.
Needs (essentials)
Wants
Savings & debt overpayments
—
Remaining
—
Savings rate
—
Spent on needs
—
Spent on wants
Needs
Target: ≤50%
Wants
Target: ≤30%
Savings
Target: ≥20%
How to Budget Using the 50/30/20 Rule
The 50/30/20 rule is a simple framework for dividing your after-tax income across three categories:
50% Needs: Rent or mortgage, council tax, food, utilities, transport, insurance and minimum debt payments — things you cannot easily cut.
30% Wants: Eating out, entertainment, subscriptions, holidays and lifestyle spending — things you choose to spend on.
20% Savings: Emergency fund, ISA contributions, extra pension payments and overpaying debt.
UK housing reality
In many UK cities — especially London and the South East — housing alone can consume 35–45% of take-home pay. If your needs exceed 50%, focus on reducing wants first rather than cutting savings, and consider whether a house share or longer commute can help.
Build an emergency fund first
Before investing, the Money Advice Service recommends building an emergency fund of 3–6 months' essential expenses in an easy-access savings account. Once in place, redirect savings into ISAs or a pension.
Pension auto-enrolment note
If you are auto-enrolled into a workplace pension, your contributions are deducted from gross pay before you receive your take-home pay. These contributions do not appear in your budget — but they are already working for you. Any voluntary top-ups should be included in the savings category.
Worked Examples
Jake — Single, £35k salary
Take-home£2,393/mo
Needs (rent, food, etc.)£1,520
Wants (entertainment, etc.)£325
Savings / ISA£300
Remaining / unallocated£248
Needs %63.5% ⚠️
Savings rate12.5%
Sophie & Tom — Couple, £65k combined
Take-home (combined)£4,150/mo
Mortgage + childcare£2,200
Food, utilities, transport£700
Wants£500
Savings£500
Remaining£250
Savings rate12.0%
Amira — Student, £1,200/mo
Income (PT work + loan)£1,200/mo
Rent (student hall)£550
Food & essentials£300
Transport£60
Entertainment£150
Emergency savings£60
Remaining£80
Frequently Asked Questions
The 50/30/20 rule divides your after-tax income into three categories: 50% for needs (housing, food, utilities, transport, minimum debt payments), 30% for wants (entertainment, eating out, subscriptions, hobbies), and 20% for savings and extra debt repayment. It is a guideline, not a rigid rule — high housing costs in UK cities often push the needs category above 50%, which is normal.
A common UK guideline is to spend no more than 35% of gross income on housing. In London and major cities this is often unavoidable higher. The 50/30/20 rule suggests all needs combined (housing, food, transport, utilities) should stay within 50% of take-home pay. If your rent alone is 50%, consider whether a flatshare or relocation is feasible.
The 50/30/20 rule targets 20% of take-home pay. The UK average household savings ratio was around 8–10% pre-pandemic. If 20% is not achievable immediately, start with whatever you can manage and increase by 1% each time you receive a pay rise. Even 5% invested consistently in an ISA or pension compounds significantly over a working lifetime.
Auto-enrolled workplace pension contributions are deducted from gross pay before you receive your take-home pay — they do not appear in your take-home figure and should not be double-counted. However, voluntary extra pension contributions you make directly should be included in the savings category of your budget.