Emergency Fund Calculator
Calculate how large your emergency fund should be. Enter monthly expenses to get a 3–6 month safety net target and a savings plan to build it.
Reviewed by Sahil, Senior Finance & Tax Editor
Formula
Target = Monthly Expenses x Months of Coverage | Gap = Target - Current Savings | Months to Goal = Gap / Monthly Contribution
Your emergency fund target is your monthly essential expenses multiplied by the number of months you want covered (typically 3-6). The gap is how much more you need, and dividing by monthly contribution gives the time to reach your goal.
Worked Examples
Example 1: 6-Month Emergency Fund
Problem:Monthly expenses are $4,000. Currently have $5,000 saved. Contributing $500/month. How long to reach 6 months?
Solution:Target: $4,000 x 6 = $24,000\nGap: $24,000 - $5,000 = $19,000\nMonths to goal: $19,000 / $500 = 38 months\nProgress: 20.8%
Result:Target: $24,000 | Gap: $19,000 | Time to goal: 3 yr 2 mo
Frequently Asked Questions
How much should I have in an emergency fund?
Most financial advisors recommend 3-6 months of essential expenses. If you have a stable job with reliable income, 3 months may suffice. If you're self-employed, have variable income, or are the sole earner, aim for 6-12 months. Essential expenses include housing, food, utilities, insurance, transportation, and minimum debt payments — not discretionary spending like dining out or entertainment.
Where should I keep my emergency fund?
Keep your emergency fund in a high-yield savings account (HYSA) — it's liquid, FDIC-insured, and earns 4-5% APY (as of 2024). Don't invest it in stocks (too volatile) or lock it in CDs (not liquid enough). Some people keep 1 month in checking and the rest in a HYSA. Money market accounts and Treasury bills are also good options. The key is quick access without penalties.
What qualifies as an emergency?
True emergencies are unexpected, necessary expenses: job loss, medical emergencies, urgent car repairs needed for work, critical home repairs (burst pipe, broken furnace), or unexpected travel for family emergencies. NOT emergencies: vacations, planned purchases, sales, routine maintenance, or wants. Having a separate sinking fund for predictable irregular expenses (car maintenance, annual insurance) keeps your emergency fund intact.
Should my emergency fund be based on my income or my essential expenses?
Emergency fund targets should be based on essential monthly expenses — housing, utilities, groceries, insurance premiums, and minimum debt payments — not gross income, since income is irrelevant once a job loss or emergency actually occurs. Basing the target on expenses also naturally scales the fund to your real cost of living rather than your (often higher) discretionary spending level.
References
Reviewed by Sahil, Senior Finance & Tax Editor · Editorial policy