How big your emergency fund should be

"Six months of expenses" gets repeated without context. How to calculate the right number for your situation, and where to keep it.

By António Avelar Updated 17 August 2026 4 min read

“Six months of expenses” is advice everyone has heard. It is also a number nobody checks, because checking it requires knowing what you spend each month — which is precisely the thing most people don’t know.

The result is an emergency fund based on a guess. Usually too small, occasionally larger than it needs to be, almost always unrelated to the facts.

Start from the right number, not your salary

The most common mistake is sizing the fund from income. Earn €2,000 a month, and “six months” becomes €12,000.

But the fund does not exist to replace your salary. It exists to pay the things that keep arriving when the salary doesn’t. Those are very different amounts: if you save €300 a month, that €300 is not part of the emergency.

The number you need is your fixed costs, not your income and not your total spending. Rent or mortgage, service charges, utilities, phone and internet, insurance, transport, childcare, loan payments, and the groceries you cannot do without.

The fixed versus variable spending guide covers how to separate the two from your statement. For most people the monthly fixed cost sits well below total spending — which is a pleasant surprise, because it makes the target reachable.

Then adjust for your actual risk

Six months is an average almost nobody matches. What moves the number:

Income stability. A permanent contract and freelance work with two clients do not carry the same risk. The more volatile or concentrated the income, the larger the fund.

How many incomes come into the household. Two people employed in different sectors is a form of diversification. A single income supporting a family needs more slack.

How long replacement would take. This isn’t about finding any job — it’s about finding one that covers your fixed costs. In specialised fields that can take months.

What happens if you don’t have it. If the alternative is high-interest consumer credit, the fund is worth more than the return it gives up by sitting still.

A practical range: three months of fixed costs for stable income with two earners; six months for the ordinary single-income case; nine to twelve for freelance or seasonal income.

Where to keep it

Two properties matter, in this order: being there when you need it, and not losing value too quickly.

Return is the third priority, and this is where people go wrong — they put the emergency fund into something that pays better but cannot be reached in the week they need it.

A structure that works:

One month in a current account. Available today, no intermediate steps.
The rest in capital-guaranteed, reachable savings — a term deposit you can break, or savings certificates past the minimum holding period. The term deposits versus certificates guide compares the two.

What the fund should not be: shares, funds, crypto, or anything that might be 30% down in exactly the month you lost your job. Personal emergencies have a habit of coinciding with bad markets.

The step nearly everyone skips

Setting the fund once and never revisiting it.

Fixed costs rise. Rent is indexed, the mortgage payment moves when rates move, a child arrives, you move house. A fund sized against your 2023 costs may now cover four months rather than six, with nothing visible having happened.

Worth checking once a year:

What are my fixed costs now? The current number, not last year’s.
How many months does the fund cover? Divide and look.
Has the risk changed? New job, new child, a move to freelancing — all of them move the target.

Getting there without heroics

If the target looks impossible, it’s because you’re looking at the total. What matters is the first rung.

A thousand euros already removes most of the emergencies that push people into expensive credit — a car repair, a broken appliance, one strange month. Get there first, and the urgency drops sharply.

After that, the most effective route isn’t squeezing variable spending, which demands constant attention. It’s cutting one fixed cost and letting the saving happen by itself — the forgotten subscriptions guide routinely finds €20 to €60 a month that nobody misses.

An emergency fund isn’t a question of discipline. It’s a question of knowing the number, and picking somewhere the money doesn’t need your attention every month. And once it’s full, the surplus gets better options — paying down the mortgage early is often the next comparison worth running.