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Emergency fund in the UK: how much and where to keep it

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Why it comes first

Without savings, a £1,000 boiler repair or car bill goes on a credit card at 25% or more, or an overdraft at around 40%, and one surprise can turn into months of debt. An emergency fund breaks that cycle.

It also buys you time if your income stops. Statutory Sick Pay is £123.25 a week from April 2026 if your employer pays no more, and benefits such as Universal Credit can take five weeks to arrive. A few months of savings covers the gap.

How much do you need?

Add up your essential monthly costs only: rent or mortgage, Council Tax, energy, water, food, travel and minimum debt payments. Then multiply:

Your situation Aim for
Steady job, no dependants 3 months
Family, single income or a less secure job 6 months
Self-employed or income that varies 6 to 12 months

Example: essentials of £1,800 a month mean a fund of £5,400 to £10,800.

How long a £5,400 emergency fund takes 3 months of £1,800 essential costs, an example before interest
Saving £100 a month 4 years 6 months
54 months
Saving £200 a month 2 years 3 months
27 months
Saving £300 a month 1 year 6 months
18 months
Saving £450 a month 1 year
12 months

Interest in a good easy-access account or Cash ISA shortens this a little. Windfalls, like a tax refund or part of a bonus, shorten it a lot.

Where to keep it

Account Good for Watch out for
Easy-access savings Money you can get the same day, and a decent rate Rates that drop after a bonus period ends
Easy-access Cash ISA Interest that’s always tax-free Some ISAs limit withdrawals; check it’s flexible
Premium Bonds (NS&I) Money backed by the Treasury, with a chance of prizes No interest: you could win nothing
Notice or fixed-rate saver A higher rate, for money beyond the first few months You can’t get at it straight away

Most people pay no tax on savings interest: the Personal Savings Allowance makes the first £1,000 a year tax-free for basic-rate taxpayers and £500 for higher-rate taxpayers. Your savings are protected by the FSCS up to £120,000 per person, per banking licence.

Don’t keep it in investments: markets can fall just when you need the money.

How to build it from nothing

  1. Start with a small goal, such as £500 or one month of essentials.
  2. Set up a standing order on payday, even £25 or £50, into a separate account or a savings pot in your banking app.
  3. Add windfalls: part of a bonus, tax refund or pay rise.
  4. Once you have a starter fund, make sure you get your full employer pension contribution and clear expensive debt, then build the rest.

If you get Universal Credit and work, ask about Help to Save: the government adds a 50% bonus to what you save, up to £50 a month.

When to use it

Use it for real emergencies: losing your job, urgent repairs, unexpected bills. Not for holidays or Christmas: save for those separately. When you use it, top it back up before going back to other goals.

The savings interest calculator shows what your fund earns, and any tax due.

Frequently asked questions

How much should I have in an emergency fund?

Three to six months of essential costs is the usual aim: rent or mortgage, Council Tax, energy, food, travel and minimum debt payments. With essentials of £1,800 a month, that’s £5,400 to £10,800. Self-employed people and single-income families should aim higher.

Should I keep my emergency fund in a Cash ISA?

An easy-access Cash ISA works well: you can get at the money and the interest is always tax-free. Most people don’t pay tax on savings interest anyway, thanks to the Personal Savings Allowance, so a higher rate outside an ISA can be just as good.

Are Premium Bonds good for an emergency fund?

They can be part of one. Your money is backed by the Treasury and you can usually get it back within a few working days, but instead of interest you get a chance of winning prizes, so you could earn nothing in a year.

Should I save or pay off debt first?

Build a small starter fund of about £500 to £1,000 first, so a surprise bill doesn’t go on a card. Then clear credit cards and overdrafts, which cost far more than savings earn, before building the rest.

Is my emergency fund safe in a bank?

Up to £120,000 per person, per banking licence, is protected by the FSCS if a UK bank or building society fails. Check whether your savings accounts share a licence before relying on the limit for each.

Money basics · Lesson 3 of 9

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