What is an emergency fund?
An emergency fund is money kept aside, in cash or something close to it, to cover unexpected expenses or a loss of income — a broken car, a medical bill, a period without work. Its purpose is not to earn a return but to be available immediately, at a known value, without having to sell investments at a bad moment or take on expensive debt.
It usually comes before investing: without it, any surprise can force the sale of stocks in exactly the kind of downturn in which job losses are also most likely.
How large it should be
The common rule of thumb is three to six months of essential expenses:
with typically between 3 and 6. Essential expenses are what must be paid regardless of circumstances: rent or mortgage, food, insurance, utilities, transport, loan repayments.
A simple illustration
A household's essential monthly expenses:
| Item | Monthly amount |
|---|---|
| Rent | €1,100 |
| Food | €500 |
| Insurance and utilities | €350 |
| Transport | €200 |
| Other obligations | €150 |
| Total | €2,300 |
A reserve of roughly €7,000 to €14,000 covers most shocks without touching the investments.
Where to hold it
- Instant-access savings or overnight deposit accounts, protected by deposit guarantee schemes — in the EU up to €100,000 per person and bank.
- Money market funds as a complement; they can usually be sold within a day or two.
- Not in stocks or long-term bonds, whose value can be well below its peak exactly when the money is needed.
Who needs more, and who less
- More: the self-employed, single-income households, people with irregular income or dependants, and homeowners who may face repair costs.
- Less: households with two stable incomes, good sick-pay and unemployment protection, or other liquid reserves.
Why it stays separate
Counting the emergency fund as part of the investment portfolio understates how much cash is really needed and overstates how much can be invested. Kept separate, it lets the portfolio be managed for its long-term purpose — including holding on through downturns — while the reserve absorbs life's surprises. The return it gives up is the price of that stability.
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