Sizing Your Emergency Fund

An unexpected bill or a lost paycheck is rarely a disaster on its own. It becomes one when there is no cash to meet it, and the gap is filled with a credit card, a payday loan or an early withdrawal from a retirement account. An emergency fund is the cash that stops one bad month from becoming a years-long debt. This chapter answers how large yours should be: what it is for, how to measure the spending it has to cover, and how your circumstances move the target up or down.

What the fund is for

An emergency fund is cash you can reach within a day or two, kept for events that are unexpected, necessary and urgent. The big three are a loss of income, a medical bill, and an essential repair to a home or the car you need for work. It is not for costs you can see coming, such as an annual insurance premium or holiday spending. Those belong in their own savings, covered in chapter 7.

The Federal Reserve's annual survey of household finances asks adults how they would cover a modest unexpected expense, and every year a large share say they could not cover it with cash or its equivalent. The alternatives are expensive:

• High-interest debt. Card balances typically carry rates in the twenties, and the interest keeps running until the balance is paid. Chapter 4 works through what that costs.
• Retirement withdrawals. Taking money from a 401(k) or traditional IRA before age 59½ generally means income tax plus a 10% additional tax, unless an exception applies, and the money stops compounding for good.
• Missed payments. Late fees, a damaged credit score and higher borrowing costs for years afterwards.

Without a fund, each emergency also tends to set off the next: a debt payment squeezes the budget, which makes the following surprise harder to absorb.

Count essential spending, not total spending

The fund has to replace what you could not stop paying if your income disappeared tomorrow, not your whole lifestyle. In a real emergency most people cut discretionary spending quickly, so sizing the fund on total spending overstates what you need.

Go through two or three months of bank and card statements and add up the monthly average for:

• Housing: rent or mortgage payment, property tax and insurance if not included, essential utilities, internet and phone.
• Food: groceries, not restaurants.
• Transportation: car payment, insurance, fuel or transit, routine maintenance.
• Insurance and health: health insurance premiums, regular prescriptions and medical costs, other insurance premiums.
• Obligations: minimum payments on all debts, child care, child support or alimony.

Leave out dining out, entertainment, travel, most shopping and extra debt payments above the minimum. The total is your monthly essentials. For most households it is noticeably lower than total spending, which makes the target feel more achievable.

How many months

Common guidance sits in a range. FINRA notes that financial planners often recommend three to six months of living expenses, and that people with variable income or specialized careers may need more. The FDIC's consumer guidance suggests at least six months. The examples below show what those choices mean for a household with the same essential spending and the same cash already set aside.

With essential spending of $3,500 a month and $4,000 saved, the household is covered for about 1.1 months today. A three-month target is $10,500, leaving $6,500 to save. Six months is $21,000, a gap of $17,000. Nine months is $31,500, a gap of $27,500. The difference between the low and high end is large, which is why the choice deserves some thought rather than a default.

These factors push the target toward the lower end:

• Two steady incomes in the household, so losing one job does not remove all income.
• A job in a field with high demand, where a new position typically comes quickly.
• No dependents, and good health and disability insurance.
• Renting rather than owning, so there are fewer large repair bills.

And these push it higher:

• A single income, or one income that most of the household depends on.
• Commission, freelance, seasonal or gig income that varies from month to month.
• Children or other dependents, or a chronic health condition.
• Owning a home or an older car.
• A specialized role or senior position, where searches tend to take longer.
• A work visa. A laid-off worker on a visa such as an H-1B generally has a grace period of up to 60 days to find a new sponsoring employer, change status or leave, and the cost of a move may follow.

The job-loss method

For many households the largest emergency they plan for is losing a job, so a second way to size the fund is to model that directly:

1. Estimate how many months a job search would realistically take in your field and at your level. Recruiters, colleagues who changed jobs recently and industry surveys are better guides than hope.
2. Subtract what would replace part of your income in that time: severance, unemployment insurance (benefits and their length vary by state and usually replace only part of previous pay), and a partner's income.
3. Add costs that would rise. The most important is health insurance. COBRA generally lets you keep an employer's group plan for up to 18 months, but you pay the full premium plus up to a 2% administrative charge, which is often several times what you paid as an employee. A marketplace plan may cost less; compare both before you need them.

The months of essentials left uncovered, plus the extra costs, give a job-loss target. Comparing it with the months-of-spending range above is a useful check. The emergency fund calculator builds a target from your own income stability, earners and dependents and shows each step.

When a smaller fund can make sense

A full fund is not always the first priority. With credit card debt at a high rate, many people build a small starter cushion first, then clear the debt, then finish the fund, because every month the debt remains it costs more than the cash earns. Chapter 8 sets out this order.

Some households also have other money they could reach in a crisis, such as Roth IRA contributions, which can be withdrawn at any time without tax or penalty (earnings are treated differently). Counting such money as a backstop can justify a somewhat smaller cash fund, with the trade-off that using it sets back retirement saving.