How Big Should Your Emergency Fund Be, and Where Should You Keep It?

An emergency fund is cash you keep for things you can't plan for. A job loss, a car repair, a boiler that dies in January. It's what stops a bad month from turning into debt.

Everyone says to keep three to six months of spending. But which one, and where should the money sit? We checked the rule against how long people really stay out of work, what stocks did when jobs were lost, and what each place to keep cash pays today.

How big should your emergency fund be?

Most guides say three to six months of spending. That means spending, not income. If you lose your job, you stop paying tax on a salary and stop saving for retirement, so you need less than your take-home pay.

Here's what that comes to for the average US household. The Bureau of Labor Statistics put total spending at $78,535 in 2024, or $6,545 a month. Essentials are housing, groceries, running a car and healthcare. They came to $46,668, or $3,889 a month.

The quickest way to size yours is to add up a month of the bills you can't skip. Rent or mortgage, utilities, food, insurance, loan payments, getting to work. Then multiply by three or six.

How long it takes to find a new job

The fund mostly exists for a job loss, so the real question is how long a job search lasts. The US government has tracked it every month since 1948.

In September 2026, the typical unemployed person had been looking for 11.5 weeks. That's under three months. But that number hides a long tail. 27% had been looking for more than six months.

That's high. Since 1948 the average has been 17%, and only about 1 month in 10 has been at today's level or above. Unemployment is low at 4.2%, but people who lose a job are taking longer to find the next one.

In a bad recession it's worse. In 2010, after the financial crisis, 46% of the unemployed had been out for more than six months. The typical search had stretched to 25 weeks.

So three months covers a typical job search in a normal year. Six months covers most of them, even now. Nothing covers every case, which is why the right size depends on you.

Three months or six? It depends on your job

• Three months is enough if your job is secure, your skills are in demand, and there's a second income in your household.
• Six months or more makes sense if you're the only earner, you have children, or you work in an industry that cuts jobs in every recession, like construction, manufacturing or sales.
• Self-employed or on commission? Your income swings even in good years. Six to twelve months is common advice, and it doubles as a buffer for slow months.
• Renting with no family to fall back on, or own an older home or car? Lean towards the bigger number. Those are the bills that turn up without warning.

Start with a small one

Six months can feel out of reach, so don't wait for it. A small fund still does a lot. The Federal Reserve asks Americans every year how they'd pay a surprise $400 bill. In 2025, 63% said they'd pay with cash or the equivalent. 12% said they couldn't pay it at all.

Only 55% said they had three months of expenses saved, down from 59% in 2021. It ran from 21% of adults on under $25,000 a year to 75% on $100,000 or more.

So a sensible order is: first $1,000 or so, enough for a repair. Then one month of essentials. Then keep going to three or six. If you've got expensive debt, like a credit card at 20% or more, it often makes sense to pay that down once you've got the first small cushion.

Why your emergency fund shouldn't be in stocks

Stocks grow faster than cash over the long run, so it's tempting to invest the fund too. The trouble is timing. The months you're most likely to lose your job are the months stocks are most likely to be down.

We checked all 12 US recessions since 1948. In every one, the S&P 500 fell at least 14% from its high. In 8 of the 12, it fell more than 20%. The middle fall was 24%.

In 2008, $12,000 in an S&P 500 fund would have been worth $5,186 at the low. That was March 2009, while unemployment was still climbing to 10%. Held in Treasury bills over the same stretch, it would have grown by 2.4%.

It isn't only the big crashes. We also looked at every month since 1949 when unemployment was at least a point above its low of the past year. Those are the months when layoffs are spreading.

In layoff months, stocks were more than 20% below their high 33% of the time. In other months it was 11%. So the risk is about 3 times higher exactly when you'd need the money.

Stocks often bounce back before the jobs do. In 7 of the 12 recessions, the S&P was back above its starting level by the time unemployment peaked. But you don't get to pick when you lose your job. If it's near the low, you'd be selling at a loss to pay the rent.

Where to keep your emergency fund

An emergency fund needs three things. It mustn't fall in value, you need to reach it within a few days, and it should earn something so inflation doesn't eat it. Here's what each option pays right now.

The average savings account pays 0.37%. On $12,000, that's $44 a year, while inflation takes about $388 of buying power. Cash left in a brokerage account often does worse, at 0.29% on average.

A high-yield savings account at an online bank pays far more. Ally's pays 3.10%, or $372 a year on the same money. It's still a bank account, so it's insured by the FDIC up to $250,000. Transfers to your current account take a day or two.

A money market fund pays a little more again. The 100 largest averaged 3.51%. They aren't insured like a bank account, but government money funds hold short-term Treasury debt and have almost never lost money. You hold them at a broker and can sell any trading day.

Treasury bills paid the most, 4.10% on three months. They're loans to the US government, so they're about as safe as it gets. You can buy them directly, or through a T-bill ETF and sell any day. Our post on SGOV, BND and AGG covers that route.

Right now, only T-bills beat inflation, at 0.37% a year after it. That's normal for cash. The point of the fund isn't growth. It's being there, at full value, on the day you need it.

What about CDs?

The average 12-month CD pays 1.73%, less than a good savings account, and you'll usually pay a penalty to take the money out early. CDs can work for part of a big fund, the part you're unlikely to touch. Keep at least the first month or two somewhere you can reach straight away.

Outside the US

The same rules apply everywhere: an easy-access savings account at a bank covered by your country's deposit protection, and shop around for the rate. In the UK, an easy-access savings account or cash ISA works well, and the FSCS protects up to £120,000 per person per bank, up from £85,000 since 1 December 2025.

In the EU, deposits are protected up to €100,000 per bank. Canada's CDIC and Australia's Financial Claims Scheme do the same job. Tax rules on interest vary by country, so check yours.

How to build an emergency fund

• Work out your number. Add up a month of essentials, then pick three or six months based on how secure your income is.
• Open a separate account for it. If it sits next to your spending money, it gets spent.
• Automate it. Set up a transfer for payday, even a small one. Raise it when you get a pay rise.
• Send windfalls there first. A tax refund or a bonus can get you most of the way in one go.
• Refill it after you use it. That's what it's for. Then rebuild before you go back to investing extra.
• Once it's full, invest the rest. Money beyond the fund belongs in your long-term investments, not in cash.

So, how big should your emergency fund be?

Three months of essentials if your income is secure, six or more if it isn't. For the average US household that's $11,667 to $23,334. A typical job search lasts under three months, but today more than a quarter of unemployed people have been looking for over six.

Keep it in cash that can't fall in value: a high-yield savings account, a money market fund or Treasury bills. Not stocks, which fell at least 14% in every recession since 1948. And not an account paying 0.37%.

If you're setting up your finances from scratch, Stage 1 of the free course covers goals, emergency funds and building a solid base.

What this test can't tell you

• The job-search figures are for people still looking. They count how long so far, not how long the search finally took, and they leave out people who gave up looking.
• The spending figures are US averages. Your essentials could be half that or double it.
• The stock falls use the S&P 500's price only, with no dividends, and the worst daily close. A fund holding other things would have fallen by a different amount.
• There have only been 12 recessions since 1948, and the layoff months overlap. Treat the counts as a guide, not as odds.
• Rates change often. The ones here were checked on 2026-10-17, and Ally is one example of an online bank, not a recommendation.