Emergency Fund Calculator
Enter your essential monthly expenses and how many months of coverage you want, to find your emergency fund target — plus how long it'll take to reach it at your current savings rate.
How the Emergency Fund formula works
The target and time-to-goal calculation:
Target fund = Monthly essential expenses × Months of coverage Amount still needed = Target fund − Current savings Months to reach goal = Amount still needed / Monthly savings rate
Step-by-step calculation
- Multiply your essential monthly expenses (housing, food, utilities, insurance, minimum debt payments) by your target number of months of coverage.
- Subtract what you've already saved from that target to find the remaining gap.
- Divide the remaining gap by how much you can save each month to estimate time to goal.
Worked example
Essential expenses of $3,200/month, targeting 6 months of coverage, with $4,000 already saved and $400/month set aside: Target = 3,200 × 6 = $19,200. Remaining = 19,200 − 4,000 = $15,200. Time to goal = 15,200 / 400 = 38 months.
Frequently asked questions
How many months of expenses should an emergency fund cover?
3 months is a common starting target for dual-income households with stable jobs; 6 months is a more common general recommendation; those with variable income or a single income source often aim for 9–12 months.
Should the target include all monthly spending or just essentials?
Most guidance uses essential expenses only — housing, utilities, food, insurance, minimum debt payments — not discretionary spending like entertainment or dining out, since the fund is meant to cover necessities during a gap in income.