Emergency Fund Calculator
Adjust the inputs below. Results update as you type.
How it works
An emergency fund is liquid cash reserved for job loss, medical bills, or urgent repairs—not for investing or discretionary spending. Multiply essential monthly expenses by a target runway (often 3–6 months; longer if income is volatile or job searches take longer in your field). Count only must-pay costs: housing, utilities, food, insurance, minimum debt payments, and transportation. Keep the fund in a liquid, low-risk account you can access quickly, and rebuild after withdrawals. This sizing tool does not replace insurance coverage, disability planning, or a full budget.
Input guidance
- Use essential monthly costs only—housing, food, utilities, insurance, transport, and minimum debt payments.
- Choose a runway that matches income stability (often 3–6 months; longer if income is volatile).
- Enter current liquid savings you would actually use in an emergency.
The formula
Target fund = essential monthly expenses × months of coverage (commonly 3–6). Time to reach it = (target − current savings) ÷ monthly contribution.
Worked example
With $3,000 of essential monthly costs, a 6-month fund is $18,000. Saving $500/month from zero reaches that in 36 months.
More examples to test
- $3,500 essentials × 6 months with $8,000 saved: see the remaining gap.
- Raise runway from 3 to 9 months for a single-earner household and compare the target.
How to interpret results
Treat the target as a cash reserve goal, not an investment return. Rebuild after withdrawals and keep the fund liquid.
When this can be inaccurate
Job-search length, medical deductibles, and irregular expenses vary. Insurance gaps are outside this sizing model.
Change history
- June 2026: Quality-reviewed for publication with formula checks and explanatory copy updates.
Site-wide corrections also appear on the corrections log.
Grow your emergency fund with a high-yield account
APY changes over time.
Frequently asked questions
How big should my emergency fund be?+
A common guideline is 3–6 months of essential expenses. Less stable income or single-earner households often aim for the higher end.
What counts as essential expenses?+
Rent or mortgage, utilities, food, insurance, minimum debt payments, and transport — the costs you cannot avoid if income stops.
Where should I keep it?+
In a safe, liquid account like a high-yield savings account, so it earns some interest but is instantly available in a crisis.
Should I invest my emergency fund?+
Usually no. Prioritize liquidity and principal stability so the money is available when income stops or a bill hits.
What if I cannot fund 6 months yet?+
Start with a smaller starter reserve (for example one month), then raise the target as cash flow allows.