Emergency Fund Calculator
Figure out how much you should have set aside for the unexpected — and how long it will take to get there at your current pace.
Time to reach goal
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Target fund size
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Amount still needed
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Interest earned along the way
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Starting balance
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Year-by-year breakdown
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How much emergency fund do you actually need?
An emergency fund is the cash you set aside specifically to cover unexpected expenses — a layoff, a medical bill, a major car or home repair — without going into debt. The standard rule of thumb is to save 3 to 6 months of essential expenses, but the right number depends on how stable your income is and how many people rely on it.
- Monthly essential expenses — only the costs you absolutely must keep paying if your income stopped tomorrow: housing, utilities, groceries, insurance, transportation, and minimum payments on existing debt. Skip the non-essentials (subscriptions, dining out, hobbies) because in a real emergency you would cut those first.
- Months of coverage — 3 months is a reasonable floor for a dual-income household with stable jobs; 6 months is the most common target; 9–12 months makes sense for freelancers, single-income families, or anyone in a volatile industry.
- Current emergency savings — what you already have earmarked for this purpose. Keep it separate from your everyday checking account so you are not tempted to spend it.
- Monthly contribution — an automatic transfer right after payday is the most reliable way to build the fund. Even small amounts add up faster than people expect when paired with a high-yield savings account.
- Annual interest rate — keep this money in a high-yield savings account so it is safe, liquid, and earns a little while it waits. Do not put your emergency fund in stocks or anything that can lose value on short notice.
Tip: If the full target feels overwhelming, start by aiming for a $1,000 starter fund. That alone covers the most common surprise expenses and breaks the cycle of putting them on a credit card while you keep building toward the full 3–6 month target.
This calculator assumes a constant interest rate, monthly compounding, and contributions made at the end of each month. Real-world rates and expenses fluctuate. This is not financial advice.
An emergency fund is the financial buffer that stands between a bad month and a financial crisis. When a layoff, medical bill, or major car repair hits, the right amount of cash savings means you absorb the shock instead of reaching for a credit card. This calculator tells you exactly how large your emergency fund needs to be, how far your current savings have gotten you, and how many months it will take to reach your target — including the interest your savings account earns along the way.
Monthly essential expenses — enter only the costs you absolutely must keep paying if your income stopped tomorrow: rent or mortgage, utilities, groceries, insurance, transportation, and minimum debt payments. Leave out subscriptions, dining out, and other discretionary spending, because in a real emergency those are the first things you cut.
Months of coverage — the calculator offers four options: 3, 6, 9, and 12 months. Three months is a reasonable floor for a dual-income household with stable employment. Six months is the most widely recommended target and is selected by default. Nine to twelve months makes sense for freelancers, single-income families, or anyone working in a volatile industry where finding new work takes longer.
Current emergency savings — enter only money you have deliberately set aside for emergencies, separate from your everyday checking account. If you are starting from zero, enter 0.
Monthly contribution — the amount you can add to the fund each month. Even a modest automatic transfer right after payday compounds meaningfully when paired with interest, as the year-by-year breakdown table makes clear.
Annual interest rate — a high-yield savings account currently pays around 4%, which is what the calculator defaults to. Keep your emergency fund somewhere safe and liquid; this is not money to invest in anything that can lose value on short notice.
If the full target feels out of reach, start with a $1,000 milestone. It covers the most common surprise expenses and breaks the habit of putting emergencies on a credit card while you continue building toward the full three-to-six month goal.
Building your fund is the same math as any savings goal — the Savings Goal Calculator lets you set any target amount and solve for time or monthly contribution.
Once your emergency fund is fully funded, redirect those contributions toward other goals. The Compound Interest Calculator shows what consistent investing could grow to.
Your emergency fund is part of your overall financial picture — see how it fits with the Net Worth Calculator.
This calculator assumes a constant interest rate, monthly compounding, and contributions made at the end of each month. Real-world rates and expenses fluctuate. This is not financial advice.