A common rule of thumb is to keep three to six months of essential outgoings in an instant access savings account, and MoneyHelper gives the same guidance. For someone whose essentials cost £1,545 a month, that is between £4,635 and £9,270. The right figure for you depends on how secure your income is, who depends on you and what bills you could not cut in a crisis.
Note: this is general information, not financial advice. The figures in the examples are illustrative, including the 4% savings rate, which is not a current offer. Check MoneyHelper and your own circumstances, and speak to a regulated adviser if you need personal advice.
What an emergency fund is for
An emergency fund is money you can reach quickly to cover a shock you did not plan for. The classic cases are losing your job, being unable to work because of illness, an urgent repair such as a broken boiler or a car you rely on, or an unexpected trip to look after a relative. It is not for holidays, a deposit or the January sales. If it is mixed up with those goals, it tends to get spent.
The fund works by giving you time. If your income stops, a buffer means you can look for the right job rather than the first one, and you do not need to borrow on a credit card at a high rate. It also reduces stress, which has its own value, though that is hard to put a number on.
The three-to-six-month rule, and why it uses essentials only
MoneyHelper’s guidance is to have three to six months’ essential outgoings in an instant access account. The word “essential” matters. You do not count restaurants, subscriptions or holidays, because in an emergency you would cut them. You count the bills that carry penalties or real consequences if you miss them:
- Rent or mortgage payments
- Council tax
- Energy, water and broadband or phone
- Food and household basics
- Transport you need for work or caring
- Insurance premiums you have to keep paying
- Minimum payments on debts
- Childcare, if you could not stop it without losing your job
Take the figures from your bank statements for a few months rather than guessing. Many people are surprised: the real essential spend is often higher than the number in their head, because it includes annual bills spread out, such as car tax or insurance.
Worked examples: three households
Here are three illustrative households, with a monthly essentials budget and the three and six month targets.
| Household | Monthly essentials | 3 months | 6 months |
|---|---|---|---|
| Single renter, one income | £1,545 | £4,635 | £9,270 |
| Couple with two children, mortgage | £3,030 | £9,090 | £18,180 |
| Self-employed person, irregular income | £1,900 | £5,700 | £11,400 |
The single renter’s £1,545 is made up of rent £850, council tax £140, energy and water £110, food £250, transport £120, phone and broadband £45 and insurance £30. The family’s £3,030 is mortgage £1,150, council tax £190, energy £180, food £600, transport £300, childcare £450, insurance £90 and phones £70. These are made-up budgets, so replace them with your own.
Notice that the family’s target is not double the single person’s simply because there are more of them. It depends on the fixed commitments. A family with two incomes may need less than the full figure, since losing one income does not stop the other. A sole earner with dependants usually needs the higher end.
How much does the state provide if you cannot work?
Do not assume that benefits will cover your outgoings. Statutory Sick Pay in 2026/27 is £123.25 a week, or 80% of your average weekly earnings if that is lower, for up to 28 weeks. Over a month, £123.25 a week is about £534. Compare that with the single renter’s £1,545 essentials, which are about £357 a week. SSP would cover roughly a third of those costs, so a gap of over £1,000 a month remains unless your employer pays more than the statutory minimum. Statutory Sick Pay and Statutory Maternity Pay explained sets out the rules and how pay is worked out.
For redundancy, statutory redundancy pay depends on age and years of service, and is capped, so it may not cover many months. Statutory redundancy pay explained has the formula. A fund gives you time to wait for your pay-out, claim any benefits you qualify for and find new work. Check GOV.UK for what you could claim, because eligibility depends on savings, household income and other factors.
Choosing your own target: factors that move it up or down
Three to six months is a starting point, not a law. Think about these factors:
- Job security. If you work in a sector where hiring is slow, or you are on a short contract, aim higher. If your role is in high demand, the lower end may do.
- Dependants. Children, a partner who does not work or relatives who rely on you push the target up.
- Self-employment or irregular income. Many guides suggest six months or more, since a quiet spell can last longer than for an employee. A target of 12 months of essentials, £22,800 in the example above, is reasonable for some freelancers.
- Home ownership. Owners face repair bills that renters do not. A separate home repairs pot may be sensible.
- Other safety nets. Insurance, income protection, a partner’s income, or family help can reduce what you need, but be careful about counting on them.
- Health. A long-term condition may mean more time off work, or higher costs, which pushes the number up.
If six months seems out of reach, begin with one month of essentials. That is enough to cover an unplanned car repair or a missed payday. A small first target is more motivating than a large one you never reach.
How long will it take to build?
The time depends on how much you can put in each month. These examples use the House of Calculator savings tool, with an illustrative 4% AER and monthly compounding, and no tax on interest.
| Goal | Starting balance | Monthly saving | Time to reach |
|---|---|---|---|
| £4,635 (single, 3 months) | £0 | £150 | 2 years, 6 months |
| £9,270 (single, 6 months) | £0 | £150 | 4 years, 9 months |
| £9,090 (family, 3 months) | £1,000 | £250 | 2 years, 7 months |
| £18,180 (family, 6 months) | £1,000 | £250 | 5 years, 2 months |
Looking at it from the other direction, if the single renter wants six months in two years, they need to save about £372 a month. The family wanting six months in three years, starting with £1,000, needs about £447 a month. Interest helps a little, but your own contributions do most of the work. At 4%, the family’s interest over the five years is about £1,879 of the £18,180 total.
For the single renter at £150 a month, the fund is a long project. In that case, break it into stages: first £1,545 (one month), then £3,090 (two months) and so on. Each stage gives real protection. The savings calculator at the end of this guide lets you try different monthly amounts and timescales. For a general method of planning towards any target, How long to reach a savings goal covers the steps.
Where to keep your emergency fund
The aim is easy access, safety and a reasonable return, in that order. MoneyHelper recommends an instant access account. Typical places include:
- Easy-access savings accounts. You can withdraw at any time, though rates vary and can change.
- Cash ISAs, easy-access type. Interest is tax-free, which can matter if you are a higher-rate taxpayer or have a lot of savings.
- Current account with a linked savings pot. Convenient, but easier to dip into by accident.
Avoid locking the money into fixed-term accounts or investments that can fall in value, because you may not be able to reach it when you need it. Consider keeping it at a different provider from your current account, so that it is not part of your everyday spending.
Deposit protection is worth knowing about. The Financial Services Compensation Scheme protects up to £120,000 per person, per authorised firm, for deposits in banks, building societies and credit unions, following the increase from 1 December 2025. If your fund is much larger than that, or you hold other savings with the same firm, check FSCS for how it applies.
Interest on savings may be taxable. In 2026/27 a basic-rate taxpayer has a £1,000 personal savings allowance and a higher-rate taxpayer £500, and some people have a starting rate for savings. For most emergency funds the interest falls well inside the allowance, but check GOV.UK if you hold a large balance.
Building it faster
If you want to reach the target sooner, these steps help without requiring a big change:
- Pay yourself first. Set up a standing order for the day after payday, so the money moves before you can spend it.
- Save windfalls. Put part of a bonus, tax refund or gift into the fund. The 50/30/20 budget rule explained may help you decide how much of each pound goes to saving.
- Review recurring costs. Cancel subscriptions you do not use and shop around for insurance and broadband at renewal.
- Round up. Raise the standing order by a small amount each time you get a pay rise.
- Keep it separate. A named account makes the purpose clear and the balance visible.
Whichever approach you take, aim for consistency rather than perfect numbers. A regular £100 a month for three years is £3,600 plus interest, which is far more than occasional large deposits that do not happen.
When to use it, and how to top it up
Use the fund for genuine emergencies: loss of income, essential repairs and urgent travel. If you need to dip into it, do so without guilt, because that is its purpose. Then restart your saving, and consider pausing other goals until it is rebuilt to a safe level.
Review the target once a year, or when your life changes, such as a new job, a new baby, a move or a change in rent. As your essentials rise with inflation, a fund that was six months of spending three years ago may now be five.
If you have expensive debts, such as a credit card at a high rate, there is a balance to strike between building a fund and clearing the debt. Many people keep a small starter fund, perhaps one month of essentials, and then pay the debt down aggressively, before building the full amount. Which is right depends on the rates and your situation, so check with a free debt adviser if you are unsure.
Try the calculator
Enter your target, starting balance, monthly saving and interest rate in the Savings Goal Calculator to see how long your emergency fund will take, or how much to save each month to reach it by a date.
Frequently asked questions
How many months should an emergency fund cover?
MoneyHelper suggests three to six months of essential outgoings. Self-employed people, sole earners and those with dependants may want more, while people with a second income or stable job may be comfortable with less.
Should I include everything I spend in the total?
No, only essentials: housing, utilities, food, transport to work, insurance, minimum debt payments and childcare. Leave out non-essentials, because you would cut them in an emergency.
Where should I keep my emergency fund?
In an instant access savings account, so you can withdraw without notice or penalty. Check that the provider is covered by the FSCS, which protects up to £120,000 per person per authorised firm.
Is Statutory Sick Pay enough to live on?
Usually not. In 2026/27 it is £123.25 a week, or 80% of average earnings if lower, for up to 28 weeks. Your employer may pay more, so check your contract.
Should I build an emergency fund or pay off debt first?
Many people do both: a small starter fund first, then paying down high-interest debt, then building to the full target. The best order depends on your interest rates and how secure your income is.