How Big Should Your Emergency Fund Be?

There is no single right number. Here is a method to find yours, and how long it takes to get there.

Last updated: October 12, 2026. The CFPB emergency fund guide, FDIC deposit insurance page and FDIC national rates (figures as of September 21, 2026) were read on that date. Timelines were computed with this site's savings code.

What the CFPB says, and does not say

The Consumer Financial Protection Bureau says that the amount you need in an emergency savings fund "depends on your situation." It does not name a dollar figure or a number of months. To set a target, it suggests you think about the most common unexpected expenses you have had and what they cost. It also notes that "even a small amount can provide some financial security," so you do not need a large starting balance. The three-to-six-months range you may have seen is a popular planning habit, not a CFPB rule, and this page uses it only as a worked example.

A four-step method

1. List essential monthly costs. Rent or mortgage, utilities, groceries, insurance, minimum debt payments, transport to work. Leave out anything you could pause.
2. Choose a cushion length. One month is a start. Three suits a stable household with two incomes. Six or more fits a single income, variable pay, dependents or a job that is hard to replace.
3. Multiply. Essential costs times months is your target.
4. Add a repair buffer. Use the CFPB's idea: price your most common surprises, such as a car repair or a medical bill, and make sure the target covers at least one.

Worked example

Suppose essential costs are $3,200 a month. A three-month cushion is $9,600 and a six-month cushion is $19,200. How long does that take?

These timelines are identical at the 0.37% national savings rate and the 0.63% money market rate, because at rates this low the interest is a small part of the climb. On a $19,200 balance, a year of interest is about $121 at 0.63% and about $71 at 0.37%. What matters is the monthly amount you set aside. Saving $150 more per month reduces the six-month goal from 76 months to 48. Test your own numbers in the savings calculator using the goal feature.

Where to keep it

The CFPB lists a bank or credit union account, a prepaid card or cash as places to keep an emergency fund, and warns that cash can be stolen, lost or destroyed. A bank account is also protected by deposit insurance: the FDIC says deposits are insured to at least $250,000 at each insured bank. The fund should be easy to reach and not subject to price changes, so a savings or money market account is a natural fit. A CD can hold a second layer, but remember that early withdrawal may carry a penalty. See savings vs CDs vs Treasury bills.

Building it faster

The CFPB suggests several habits: set a fixed amount for each payday, automate transfers from checking to savings, split your direct deposit if your employer allows it, and put some or all of one-time money such as a tax refund into savings. It also advises tracking your balance so transfers do not cause overdraft fees. Automation matters most because it removes the monthly decision.

When to use it, and when to refill it

An emergency is a necessary and unexpected expense, such as a job loss, urgent repair or medical bill, not a sale or a vacation. After you use the fund, pause other extra goals, such as extra loan payments, until you have refilled it.

Set a goal in the savings calculator. These guides are for education and are not financial, tax, legal or insurance advice. Nothing you type into the calculators is sent anywhere.