The short answer most experts give is three to six months of essential expenses. But the figure that actually matters is the one that fits your life, and the pace you can build it at without giving up everything else.
What an emergency fund is for
An emergency fund is cash set aside for the things that genuinely can't wait: a boiler breakdown, a car repair you need to get to work, a sudden drop in income, or a vet bill. It is not a holiday fund, a Christmas fund, or money for a planned purchase. Keeping it separate is the whole point. It stops a real emergency from going straight onto a credit card.
How many months should you save?
The right number depends on how stable your income is and how many people rely on it:
| Your situation | Suggested target |
|---|---|
| Stable salary, dual income | 3 months of expenses |
| Single income or dependants | 4–6 months |
| Self-employed or irregular income | 6 months or more |
| Just getting started | £1,000, then 1 month |
Notice these are based on your essential expenses (rent or mortgage, bills, food, transport, minimum debt payments), not your full spending. You don't need to cover takeaways and subscriptions during a genuine emergency, so don't inflate the target.
Work out your number
Add up what you must pay each month to keep the lights on. Say that comes to £1,800. Then:
- 3-month fund: £5,400
- 6-month fund: £10,800
Those numbers can look frightening at first glance. The trick is to stop thinking about the total and start thinking about the monthly pace.
Enter your target and a date, and PacePot shows exactly how much to save each month to get there. Free, no sign-up.
Open the emergency fund calculatorBuild it at a realistic pace
If a £5,400 fund feels impossible, break it down. Saving £150 a month gets you there in three years; £300 a month in 18 months. Neither is fast, but both beat having nothing when the boiler dies. The most important step is starting. Even £25 a week builds a £1,300 buffer in a year.
A few things that make it easier:
- Automate it. Set a standing order for the day after payday so the money moves before you can spend it.
- Start with a milestone. Aim for your first £1,000, then one month of expenses, then three. Small wins keep you going.
- Top it up from windfalls. Tax refunds, bonuses, and birthday money go straight in.
Where to keep it
Use an easy-access savings account that's separate from your current account. You want it earning a little interest but available within a day or two. Don't invest it. Investments can drop in value at exactly the wrong moment, and the point of this money is that it's there when you need it.
The bottom line
Aim for three to six months of essential expenses, keep it in easy-access cash, and build it at a pace you can actually sustain. Starting small and steady beats waiting until you can save a big amount, because emergencies don't wait for you to be ready.