Building a safety net is often described as “save three to six months of expenses”. That is a reasonable start, but the right amount depends on how much support you would get from elsewhere and how quickly you could access it.
How many UK adults have a buffer
The Financial Conduct Authority’s 2024 Financial Lives survey found that around one in ten UK adults had no cash savings at all, and that 21% had less than £1,000 to draw on in an emergency. The figures are a reminder that a modest, reachable buffer matters more than a perfect target.
Start with what you would actually lose
A useful way to size a safety net is to work out your essential monthly spending: housing, utilities, food, transport, insurance, minimum debt payments and childcare. MoneyHelper, the government-backed guidance service, suggests aiming for at least three months of essential outgoings.
For example, if essentials come to £1,800 a month, three months is £5,400 and six months is £10,800. If you are self-employed, have a single income in the household, or work in an industry where finding a new job could take time, the higher end is more sensible.
Reaching it takes time, so a staged goal helps: a first £500, then one month of essentials, then three.
What other support exists, and its limits
Cash savings are only one layer. For employees:
- Statutory Sick Pay. From April 2026, SSP is paid from the first day of sickness at £123.25 a week, with no lower earnings threshold; people earning under that rate receive the lower of that sum or 90% of their average weekly earnings. It is far below most salaries, so it softens a period of illness without replacing income.
- Universal Credit. A new claim normally has a gap of about five weeks between claiming and the first payment. An advance payment is available but must be repaid through later payments, so it is a loan against future income, not extra money.
- Employer and insurance cover. Some employers offer enhanced sick pay, and income protection or critical illness policies can cover longer absences. These vary widely, so read the terms.
None of these amounts to a full replacement for your income, which is why cash reserves still matter.
Where to keep it
An emergency fund should be easy to reach and stable in value. A few UK specifics:
- Easy-access savings accounts and cash ISAs. A cash ISA shelters interest from tax. Outside an ISA, the Personal Savings Allowance lets basic-rate taxpayers earn £1,000 of interest tax-free, higher-rate taxpayers £500, and additional-rate taxpayers nothing. Rule changes to cash ISA limits are covered in what the cash ISA limit cut means for savers.
- Deposit protection. The Financial Services Compensation Scheme protects up to £120,000 per person, per authorised firm, since 1 December 2025, when it rose from £85,000. Joint accounts are protected per person. If your savings exceed the limit at one provider, spreading them across firms can help, though brands that share a banking licence count as one firm.
- Premium Bonds. National Savings and Investments, backed by HM Treasury, allows holdings up to £50,000. Prizes are not guaranteed, so returns are uncertain, although the capital is safe and withdrawals are usually quick.
Money needed within a year or two is poorly suited to investments that can fall in value, however good their long-term record.
Making it stick
- Open a separate account so the buffer is not mixed with spending money.
- Pay into it by setting up an automatic transfer on payday.
- Decide in advance what counts as an emergency, so that holidays and sales do not drain it.
- Replenish it after use before returning to other goals.
Where debts carry high interest, there is a trade-off between building a buffer and clearing borrowing. How to think about debt sets out that order, and how households are changing the way they manage cash shows what people are doing in practice.
This is general information, not personalised financial advice. Rates, allowances and benefit rules change; check current figures on GOV.UK and MoneyHelper.
Sources: Financial Conduct Authority, Financial Lives 2024 survey; MoneyHelper guidance on emergency savings; GOV.UK guidance on Statutory Sick Pay, Universal Credit advances and the Personal Savings Allowance; Financial Services Compensation Scheme; National Savings and Investments.
