How to build an emergency fund: how much to save and where to keep it

TUREFF• •0

An emergency fund is money set aside for the things nobody plans for: losing a job, a broken boiler, an urgent trip home, a vet bill. Without one, a surprise cost often goes on a credit card or a loan, and a short-term problem turns into long-term debt. This guide covers how much to aim for, where to keep it and how to build it from nothing. It is general information, not financial advice.

How much do you need?

The most common rule of thumb is three to six months of essential expenses. Note the word essential: the figure is what you would need to keep going, not what you spend in a normal month. Use your budget to add up:

rent or mortgage
utilities and phone
food
transport
insurance
minimum debt payments

Then adjust for your situation. You may want towards the higher end, or more, if:

your income is irregular, or you are self-employed or freelance
you are the only earner in a household with dependants
you work in an industry where finding a new job can take a long time
you own a home or car that could need costly repairs

A smaller fund may be reasonable if you have a very stable job, two incomes in the household, or few fixed costs. It is a rule of thumb, not a target someone will check.

Start with a smaller first goal

Six months of expenses can feel impossible from a standing start, so do not begin there. A first milestone of one month's essentials, or even a fixed sum that would cover a typical car repair or appliance replacement, already makes a big difference. Many people find it sensible to build that starter fund before paying extra on debts, so that the next surprise does not undo their progress.

Where to keep it

An emergency fund has three jobs, in this order: be safe, be reachable quickly, and earn a little interest.

A separate savings account, not your everyday current account. Keeping it apart makes it less tempting to dip into for non-emergencies.
Easy access: you should be able to withdraw within a day or two without penalty. Fixed-term accounts usually pay more but lock the money away.
Protected deposits: most countries have a deposit guarantee scheme that protects bank savings up to a limit if the bank fails. In the UK, for example, the FSCS limit rose to £120,000 per person per authorised firm on 1 December 2025. Check the scheme and limit where you live.
Not in shares or crypto. Investments can fall sharply exactly when the economy is weak, which is also when people tend to lose their jobs. An emergency fund that might be down 30% when you need it is not doing its job.

Shop around for the interest rate, since easy-access rates vary widely between banks, but do not chase a slightly higher rate at the cost of access or safety.

How to build it gradually

Automate it. Set up a standing order or automatic transfer for the day after payday. Even a small regular amount adds up, and you stop having to decide each month.
Save windfalls. Tax refunds, bonuses, cash gifts and the proceeds of selling things you no longer use can go straight into the fund.
Redirect finished payments. When a loan or subscription ends, keep paying the same amount, but to yourself.
Round up. Some banks offer round-up features that move spare change into savings with every card payment.
Track progress in months, not money. "I have two months covered" is more motivating and more meaningful than a raw balance.

When to use it, and when not to

A useful test: is it unexpected, necessary and urgent? Job loss, medical or dental costs, essential home or car repairs and emergency travel all qualify. A holiday, a sale or a new phone you would like do not; those belong in separate savings pots for planned spending. When you do use the fund, that is not failure. It is exactly what it was for. Afterwards, pause other saving goals if needed and rebuild it before anything else.

Review it once a year

As your rent, family or job changes, so does your essential monthly spending. Recalculate your target at least once a year and after any big life change. Have you had to use your emergency fund, and how long did it take to build? Share your experience or ask a question in the comments.