How to Budget in the UK: A Plain Guide
The 50/30/20 rule is the cleanest starting point for most people: put 50% of your after-tax income towards needs (rent, bills, food, transport), 30% towards wants (dining out, entertainment, subscriptions), and 20% towards savings and debt repayment.
Step 1: Know your take-home pay. That means after tax and National Insurance, not your gross salary. If you are on PAYE, your payslip shows this directly.
Step 2: List your fixed costs. Rent or mortgage, utilities, insurance, minimum debt payments. These leave your account whether you think about them or not.
Step 3: Pull three months of bank statements. Most people are surprised by how much goes on subscriptions, takeaways, and impulse purchases. Three months smooths out the one-off spikes and gives you an honest average.
Step 4: Automate before you can spend it. On payday, move your savings amount to a separate account immediately. Set direct debits for all your bills. Whatever is left is your spending money. That is the only number you need to track day-to-day.
The common trap is tracking everything manually and giving up within weeks. The "pay yourself first" setup sidesteps that entirely: savings happen automatically, and you are only making decisions about what remains.
Frequently Asked Questions
What if I cannot save 20%?
Start wherever you can. Even 5% is better than nothing. The goal is to build the habit. As you pay off debts or earn more, increase the percentage gradually.
Should I use a budgeting app?
Apps that connect to your bank via Open Banking can automatically categorise spending and show where your money actually goes. CoreFi does exactly this.
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