What is an emergency fund and how big should it be

What is an emergency fund

An emergency fund is a cash reserve you set aside for the unexpected: losing your job, a car or home breakdown, an unexpected health expense¹. It is the first line of defence for your finances: it lets you get through a difficult stretch without having to take on expensive credit or sell investments at the worst possible moment.

Having this money available changes how you deal with a problem. Instead of a financial crisis, an unexpected event becomes just a setback.

How big should it be

The usual benchmark is to hold 3 to 6 months of essential expenses. There is no single right number: it depends on how stable your income and fixed costs are.

• 3 months may be enough if you have a stable, secure income, no dependants and few fixed costs.
• 6 months or more is wiser if your income is variable, you are self-employed, your household runs on a single salary, or you have dependants.

The calculation is simple:

Target fund = essential monthly expenses × months of cover

Our emergency fund calculator does this for you and also shows how much you still need to save and how many months it takes to get there.

Essential expenses, not your salary

A common mistake is to size the fund by your salary. The fund is there to pay what you must pay if your income stops (housing, food, water, electricity and phone bills, transport, health), not to maintain your current lifestyle.

Add up only the essentials. If you spend €2,000 a month but the costs you cannot cut come to €1,200, it is the €1,200 you should base the fund on. To separate the essential from the optional, the household budget calculator and the 50/30/20 rule help you look at your spending by category.

Where to keep the fund

An emergency fund has two requirements: it must be safe and it must be instantly available. So the right place is a savings account or a deposit with no penalty on withdrawal, not shares or investment funds.

The reason is simple: you may need the fund exactly when markets are down, for example, being laid off in a recession. If the money were invested, you would be forced to sell at the worst price. The goal of the fund is not to earn a high return, it is to be there when you need it. The returns come from the investments you make after the fund is in place.

Building the fund step by step

If you do not yet have the full fund, set an amount you can save every month and be consistent. Even a modest amount grows: saving €300 a month gives you €3,600 after a year. The savings calculator helps you project how much you accumulate over time, and the emergency fund calculator tells you how many months it takes to reach the goal at your saving rate.

Emergency fund before investing

As a rule, build the emergency fund before you start investing seriously. Having the reserve first stops you from having to unwind investments at the worst time or take on expensive credit when something unexpected happens. Once the fund is in place, you can channel your saving into investing with far greater peace of mind.

The takeaway

The emergency fund is the foundation of healthy finances: 3 to 6 months of essential expenses, calculated on the essentials rather than your salary, and kept in a safe, instant-access product. Run your own numbers on the emergency fund calculator: enter your expenses, the months of cover and how much you can save, and see how much you need and how long it takes to get there.