Emergency Fund Calculator

Example Calculation

Say your essentials cost $3,200 a month and you want six months of cover. Your goal is 6 × $3,200 = $19,200. You have $2,000 saved and can add $400 a month to a savings account that pays 0.4% a year.

You still need $17,200. At $400 a month it takes 43 months, about 3 years and 7 months. Saving $600 a month shortens that to 29 months. An account that pays 4% instead of 0.4% shortens it to 40 months, because the interest does part of the work.

How It Works

An emergency fund is money you keep for sudden costs: a job loss, a medical bill, an urgent car repair or a trip home. It sits in a safe, easy-to-reach account, so you do not have to use a credit card or a high-interest loan when something goes wrong.

This calculator turns that idea into a number. You enter your essential monthly costs: rent or mortgage, utilities, groceries, insurance, transport and minimum debt payments. Leave out costs you could pause for a while, such as dining out and subscriptions. Then you choose how many months of those costs you want to be able to cover. The goal is the essentials times the months.

How many months? There is no single right answer. The Consumer Financial Protection Bureau says the amount you need depends on your situation. The FDIC says financial experts generally recommend at least six months of living expenses. CFPB research found that roughly one month of income in savings marks an important line between people who are in danger of hardship and people who are at lower risk, so one month is a sensible first milestone. If your income changes from month to month, you are self-employed or other people depend on you, a longer cushion makes sense.

Next, enter what you have saved and what you can add each month. The tool adds interest every month at the APY you enter and counts the months until the balance reaches the goal. Interest helps, but at today’s savings rates your deposit does most of the work: the FDIC national average savings rate was 0.37% in September 2026.

Keep the fund where it is safe and easy to reach, such as an insured savings account. FDIC insurance covers deposits up to at least $250,000 at each insured bank. Emergency money does not belong in investments that can lose value at the moment you need it.

Formula Explained

Goal = monthly essentials × months of cover

Monthly rate i = (1 + APY)1/12 − 1

Each month: balance = balance × (1 + i) + deposit

Months to goal is the first month in which the balance is at least the goal.

Assumptions and limits

• Your monthly essentials stay the same. Prices rise, so look at the goal again each year.
• Interest is added once a month at the APY you enter, and your deposit is added at the end of each month.
• Your deposit and the rate stay constant. If you use some of the fund, the plan starts again from the new balance.
• The money is in an account where the balance cannot fall. Tax on the interest is not subtracted.
• The result is a planning target, not advice. People with variable income, dependents or health costs may need a larger cushion.