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Emergency fund calculator: how much cash do you actually need?

Add up your essential monthly bills, pick how steady your income is, and see your target, your gap and the month you get there. Updated October 23, 2026.

Short answer: an emergency fund is cash for your essential bills only (housing, food, utilities, transport, insurance, minimum debt payments), not your whole lifestyle. Common guidance is three to six months of those bills, and more if your income is uneven or one paycheck supports the household. Nothing you type leaves your device.

Housing: rent or mortgage, $ Groceries, $ Utilities and phone, $ Transportation (gas, transit, car payment), $ Insurance and health costs, $ Minimum debt payments, $ Other must-pay bills (childcare, etc.), $ How steady is your income? Steady job, two incomes in the homeSteady job, one income in the homeVariable pay, commission or self-employed Someone depends on me, or we have ongoing medical costs (adds 1 month) Emergency savings you have today, $ Amount you can save each month, $ Show my target

Where to keep it

Use a separate savings account that is easy to reach in a day or two, so you are not tempted to spend it but can get it fast.
Choose an account at a bank covered by FDIC insurance (or a credit union covered by NCUA). FDIC coverage is up to $250,000 per depositor, per bank, per ownership category.
Compare savings rates, since they change often. A higher-rate online savings account earns more than a checking account, with the same access.
Set an automatic transfer on payday for the monthly amount above. Automatic beats willpower.
Count only true emergencies: job loss, medical bills, urgent home or car repairs. Refill it after you use it.

Common mistakes

Counting investments or retirement accounts as your emergency fund. Those can drop in value or carry penalties when you need the money.
Sizing the fund to your whole budget instead of your essentials only.
Waiting for the full target before starting. Even one month of essentials is a big cushion against a surprise bill.

Related: Emergency fund calculator · Debt payoff calculator · Personal finance do's and don'ts · Solutions Hub

Estimates only, based on the numbers you enter. Not financial advice. Rules and rates change, so confirm with your bank. Sources: FDIC deposit insurance, Consumer Financial Protection Bureau.

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