An emergency fund is money set aside to cover an unexpected loss of income or an unavoidable expense, held somewhere you can reach it quickly and where its value does not move around.
Why it comes first
Without one, an emergency has to be funded by selling investments — often at the worst possible moment, since job losses and market falls have an unhelpful tendency to coincide — or by borrowing at a high rate. Both outcomes cost far more than the modest return the emergency fund gave up.
How much
A common starting point is three to six months of essential expenses. The right figure depends on how stable your income is, how many people depend on it, and whether you are the only earner. Someone with variable income or a single-income household usually needs more.
Where to keep it
The job of this money is availability, not growth. It should be reachable within a day or two and should not fluctuate in value. Accepting a lower return here is the price of the certainty, and it is a price worth paying.
Rules that keep it intact
- Keep it separate from your everyday account, so it is not spent by accident.
- Define in advance what counts as an emergency — an unplanned purchase is not one.
- Rebuild it immediately after use, before resuming other goals.
- Review the amount whenever your expenses change materially.
Health insurance sits alongside this rather than replacing it. A medical event can create both a claim and a cash-flow problem at the same time.