How to budget your money in the UK (2026)

Budgeting is the foundation of every financial goal — whether you want to save for a house, pay off debt, or just stop wondering where your money went. Yet most UK adults have never built a proper monthly budget. This guide shows you exactly how to do it, step by step.

Step 1: Find your real monthly income

Everything starts with knowing your actual take-home pay — the money that hits your bank account each month, not your gross salary. Your gross salary is reduced by income tax, National Insurance, pension contributions, and student loan repayments before you ever see it.

For example, a £35,000 gross salary produces approximately £2,300 per month in take-home pay (after basic rate tax and NI). If you have a student loan, that drops further. Use Womho's salary calculator to get your exact figure.

If you have variable income — freelance work, shifts, commissions — use your lowest 3-month average to be conservative.

Step 2: List every fixed expense

Fixed expenses are the same every month. Go through your bank statements and list everything that comes out automatically:

• Rent or mortgage
• Council tax
• Utility bills (energy, water)
• Broadband and phone contracts
• Insurance (contents, car, pet, life)
• Subscriptions (Netflix, Spotify, gym, Amazon Prime)
• Minimum debt payments
• Pension contributions (if not auto-enrolled)

Be thorough. Most people underestimate their fixed costs by 15-20%.

Step 3: Track your variable spending

Variable spending is harder to pin down because it changes each month. The easiest method: look at last month's bank statements and categorise every transaction. Most UK banks let you export these as CSVs or show spending by category in their app.

Common variable categories: groceries, eating out, transport, petrol, clothing, personal care, gifts, hobbies, and home maintenance.

Be honest with yourself. This exercise only works if you capture the real numbers, not the numbers you wish were true.

Step 4: Apply the 50/30/20 rule

The 50/30/20 rule is a simple framework for allocating your take-home pay:

If 50% on needs feels impossible in London or another expensive city, that is a signal to look at your housing costs or income, not to abandon the budget.

Step 5: Build in a savings goal

The 20% savings allocation should have a specific destination. Vague saving rarely works — you need a goal with a number attached to it. Common UK savings goals:

• Emergency fund (£1,000 minimum, ideally 3-6 months of expenses)
• House deposit (typically £20,000-£50,000 for first-time buyers)
• Car fund
• Holiday fund
• Wedding fund
• Investment/ISA contributions

Pay yourself first — move your savings amount on payday, before you have a chance to spend it.

Step 6: Review monthly

A budget is not set-and-forget. Spend 15 minutes at the start of each month reviewing the previous month. Did you overspend on eating out? Did an unexpected bill arrive? Adjust next month's budget accordingly.

The goal is not perfection — it is awareness. Knowing where your money goes is the most powerful financial skill you can develop.

Common UK budgeting mistakes