Emergency Fund UK: How Much You Need and Where to Keep It

An emergency fund is money set aside for unexpected expenses, a broken boiler, redundancy, car repair, or medical costs. Without one, these surprises often land on a credit card at 20%+ APR, which turns a one-off problem into months of expensive debt.

The standard advice is 3-6 months of essential expenses, not income, just the costs you cannot avoid: rent or mortgage, food, utilities, insurance, minimum debt payments. For a household spending £2,000/month on essentials, that is £6,000-£12,000. If your income is volatile (freelance, zero-hours), aim for 6 months. If you have a stable job with sick pay, 3 months may suffice.

Where to keep it: an easy-access Cash ISA or high-interest savings account, where the money is back in your hands within 1-2 business days. Do not invest your emergency fund in stocks because the interest rate feels too low. If the market drops the week your boiler breaks, the fund has failed at its only job.

Start with a target of £1,000, then build from there. Even a small buffer changes how you respond to unexpected costs.