Build Your Safety Net

The emergency fund is not an investment. It is not there to grow. It is there to sit, boringly, until something goes wrong, and then to save you.

Add up your essential monthly expenses only: rent or mortgage, council tax, utilities (gas, electric, water), food, minimum debt payments, insurance, phone. Do not include discretionary spending: eating out, subscriptions, clothes. That total is your monthly essential baseline.

3 months is the minimum. 6 months is the standard recommendation. Some people hold 3 months during debt repayment (to preserve cash for debt clearing) and build to 6 months afterward. If you're self-employed, a contractor, or work in a volatile industry, aim for 6–12 months.

The Financial Services Compensation Scheme protects up to £120,000 per person per banking institution (it was £85,000 until December 2025). If your bank goes bust, your money is guaranteed up to this limit. Check that your chosen account is FSCS-protected. Most UK banks and building societies are.

Your emergency fund must be separate from your everyday account. If it's in the same account, it will be spent. A separate account, even at the same bank, is enough psychological distance for most people. A different bank entirely is better.

Easy access (no notice period or maximum 30 days). Pays interest at or above the Bank of England base rate. FSCS-protected. No charges. That's it. You don't need features. You need reliability and interest.

If you haven't used your ISA allowance (£20,000 per tax year in 2024/25), a cash ISA protects your interest from income tax. If you're a higher-rate taxpayer or have significant savings, this matters. If you're a basic-rate taxpayer and your savings are modest, the Personal Savings Allowance (£1,000 of interest tax-free) means it's less urgent.

On payday, before you spend anything, transfer a fixed amount to your emergency fund. Even £50/month is £600/year. Treat it like a bill. It leaves on payday; you don't see it.

Tax refunds, birthday money, a work bonus, selling something: half goes to the emergency fund, half to whatever you want. This builds the fund faster without feeling like deprivation.

A sale at a shop is not an emergency. A holiday is not an emergency. A car service you knew was coming is not an emergency. An emergency fund is for events that are: unexpected, necessary, and urgent. New tyres after a blowout: yes. New tyres because the old ones are getting worn and you want to book it: save separately.