Emergency fund · 7 min read
How big should your emergency fund be?
The short answer: three to six months of essential expenses. The useful answer depends on how steady your income is, who depends on you, and how much high-interest debt is sitting behind you. Here is how to land on a number you will actually reach.
Start with expenses, not income
An emergency fund replaces the money you must spend, not the money you normally earn. Add up rent or mortgage, utilities, groceries, insurance, transport, childcare, and minimum debt payments. That total is your monthly survival number, and it is usually 25–40% smaller than your full spending.
If you have never calculated it, the monthly survival number calculator walks through it in about two minutes.
3 months
Salaried, dual income, low debt, in-demand field.
6 months
The default for most households and renters.
9–12 months
Freelance or commission income, single earner, homeowner.
What the target looks like in dollars
These use essential expenses only, at the six-month default:
- $2,000/mo essentials → target $12,000 (3 months = $6,000)
- $3,000/mo essentials → target $18,000 (3 months = $9,000)
- $4,000/mo essentials → target $24,000 (3 months = $12,000)
- $5,500/mo essentials → target $33,000 (3 months = $16,500)
Big numbers. That is why the milestone matters more than the total: the jump from $0 to one month of expenses removes more risk than any later dollar you save.
Adjust the number for your situation
- Variable income. Freelancers and commissioned workers should size the fund on their lowest three months of the past year, then aim for nine months of that figure.
- One income, two or more people. Add three months to whatever your baseline is. A single job loss takes the whole household down.
- You own the home. Roofs, water heaters and HVAC are not emergencies; they are scheduled surprises. Hold an extra 1% of the home's value on top of the fund.
- High-interest debt. Above roughly 15% APR, a one-month starter buffer plus aggressive payoff usually beats a full six-month fund. Model it in the debt payoff calculator.
Where to keep it
An emergency fund has one job: be there, in full, on a bad day. Keep it in an insured high-yield savings or money market account, separate from checking so it is not accidental spending money, and reachable within a day or two. Not in stocks, the month you lose your job is often the month the market is down. Not in a CD that penalises early withdrawal.
How long it takes to build
At $3,000/month essentials and a six-month target of $18,000: saving $300/month takes five years, $600/month takes two and a half, $900/month takes twenty months. Most people speed this up by temporarily redirecting one fixed cost, a car payment that ends, a downgraded lease, a roommate, rather than by cutting coffee.
Before you commit to a bigger fixed bill, check whether it still leaves room to fund the target with the can I afford it calculator.
If you want a dollar target rather than a rule of thumb, the how much emergency savings do I need? page works it out from your own essentials, and if you're saving toward a first place of your own, check am I ready to move out? before you sign a lease.
FAQ
How many months of expenses should an emergency fund cover?
Three months is the starting line, six months is the common default, and nine to twelve suits variable income, single-earner households, or slow-hiring fields.
Should it be based on income or expenses?
Expenses, and only the essential ones. Sizing it on gross income inflates the target and makes people give up.
Where should I keep my emergency fund?
A separate high-yield savings or money market account at an insured bank. Liquid within a day or two, invisible from your everyday checking.
Debt payoff or emergency fund first?
Build about one month of essentials first, clear high-interest debt next, then finish the fund. That order keeps a surprise bill off the credit card.
Get your exact target
Enter your essentials and job situation for a personalised number and runway. Nothing leaves your browser.
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