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Emergency fund: how much you need and how to build it
An emergency fund is money set aside for the unplanned and unavoidable: job loss, a medical bill, an urgent repair. Its only job is to be there when you need it, which means the usual rules for growing money — take more risk for more return — don't apply to it.
1. How many months to cover
Three months of essential expenses is a common baseline for stable, dual-income households. Six months or more fits single incomes, self-employment, or irregular pay. The number should scale with how quickly and reliably you could replace your income if it stopped tomorrow.
- 3 months: stable job, dual income, low fixed costs
- 6 months: single income, variable pay, or self-employment
- 6–12 months: freelance income, or a household with only one earner and dependants
2. Essential expenses, not your whole budget
Base the target on what you couldn't cut in an emergency: housing, utilities, groceries, insurance, minimum debt payments and transport. Leave out discretionary spending — in a real emergency you would cut it anyway, so including it inflates the target unnecessarily.
3. Where to keep it
The priority is availability, not yield: a savings account or money-market fund that pays something is enough. Wherever you keep it, check that it's covered by your country's deposit protection scheme up to its limit, and if the balance exceeds that, consider splitting it across institutions.
4. When to use it (and when not to)
Use it for the unexpected and unavoidable: lost income, a health issue, a car or home repair you depend on. A holiday, a friend's wedding or a phone upgrade are planned spending, not emergencies, and deserve their own budget line. If you do dip into it, refilling it becomes the top priority, ahead of any investing.
5. Building it without stalling everything else
Automate a transfer on payday, direct any bonus or windfall straight into the fund, and revisit the target once a year. While you build it, keep a small ongoing contribution to investing to keep the habit — unless you're carrying high-interest debt, in which case build one month of buffer first, then clear the debt, then finish the fund.
Calculadora del fondo de emergencia
Calcula cuánto colchón necesitas según tus gastos y cuánto tardarás en completarlo.
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Frequently asked questions
- What if I have high-interest debt?
- Build a minimal one-month buffer first, then pay off the high-rate debt, then finish the fund. Paying 20% on a credit card while your buffer earns 2% is a guaranteed loss.
- Does an available credit card limit count as an emergency fund?
- No. It's debt, not savings, and a lender can cut or cancel a credit limit right when you need it most.
- Should the emergency fund be invested?
- Not in anything with market risk. A savings account or money-market fund gives some protection against inflation while keeping the money available, which is the only thing this money is for.
- Total expenses or just essentials?
- Essential expenses — in an emergency you'd cut discretionary spending anyway. If you'd rather have a wider margin, use total expenses and stick to three months.
- How long will it take to build?
- Divide the amount still needed by what you can set aside each month. Directing any bonus or windfall in full typically cuts the timeline by a quarter to a third.