Find out how big your emergency fund should be and how much to save each month to get there. Based on your essential monthly expenses and target months of coverage — 3 to 6 months is the standard goal.
How much to set aside
An emergency fund is cash set aside to cover unexpected costs — job loss, medical bills, car or home repairs — without going into debt. The standard rule of thumb is 3 to 6 months of essential living expenses. Multiply your must-pay monthly costs (rent or mortgage, utilities, food, insurance, minimum debt payments) by your target months to get your goal. For a household with $3,500 in essentials, a 6-month fund is $21,000.
Aim for 3 months if you have stable, dual income and few dependents; lean toward 6 months (or more) if you're self-employed, a single earner, or in a volatile industry. Keep the money somewhere safe and liquid — a high-yield savings account is ideal so it earns interest but stays instantly accessible. This calculator shows your target, how much you still need, and the monthly amount to reach it in your chosen timeframe.
Cover 3 months with stable income, 6+ months if self-employed, single-income, or in a risky field.
Park it in a high-yield savings account — safe, FDIC-insured, instantly accessible, and still earning interest.
Base the target on must-pay costs (housing, food, utilities, insurance, minimum debts) — not your full lifestyle budget.
An emergency fund is sized in months of essential expenses, not months of income, and the distinction matters because essential spending is typically far below take-home pay. The conventional range is three to six months, but the right number depends on how quickly your income could be replaced and how volatile it is: a dual-income household in a liquid job market sits at the low end, while a single-income household, a commission earner or a business owner belongs at the high end or beyond. The fund's job is liquidity and certainty rather than return, so it belongs in a high-yield savings account or money market fund, not invested.
Target = Essential monthly expenses × months of coverEssential = housing + utilities + food + insurance + transport + minimum debt paymentsMonths to fund = (Target − current savings) ÷ monthly savingwhere:
Assumptions: Held in cash equivalents, accepting that inflation erodes it — that cost is the premium paid for certainty. A fund large enough to feel comfortable but small enough not to drag on long-term returns is the balance being struck.
Strip a household budget down to essentials before applying the months multiplier.
Result$11,850 to $23,700 — three to six months of true essentials
The $13,500 difference between the two methods is real money that could be invested instead. Building to three months first, then continuing more slowly toward six while also investing, is the usual compromise between security and opportunity cost.