How much should I keep in an emergency fund?

A common rule of thumb is 3–6 months of essential expenses. Choose the higher end if your income is variable or you're the sole earner in your household.

How is the emergency fund target calculated?

Multiply your essential monthly expenses by your target number of months of coverage (default 6) to get the total target amount.

How much should I save each month to reach my goal?

Subtract your current savings from the target amount, then divide the remaining gap by the number of months you want to take to reach it.

Where should I keep my emergency fund?

Keep it liquid and low-risk — a high-yield savings account is typical so funds are accessible without market risk when you need them.

Emergency Fund Calculator — Free Online

About this calculator

An emergency fund calculator sizes a cash reserve from monthly expenses and months of coverage, then plans contributions to close the gap.

Who should use it: Households building a safety net before investing more aggressively.

When to use it: Use it after you know essential monthly expenses and a coverage target (for example 3–6 months).

Emergency fund target and monthly savings

Target = Monthly expenses × Target months; Monthly saving = max(0, Target − Current savings) ÷ Months to goal

The target scales your essential monthly expenses by how many months of coverage you want. The monthly saving amount spreads the remaining gap evenly over your chosen timeline.

Step-by-step

Enter essential monthly expenses
Rent or mortgage, utilities, food, insurance, and minimum debt payments.
Enter current savings
Money already set aside specifically for emergencies.
Choose months of coverage
3–6 months is common guidance; higher for variable income.
Choose a timeline
How many months you want to take to close the remaining gap.

Worked example: $3,000 expenses with $5,000 saved

Target of 6 months of coverage, reached over 12 months.

Target = $3,000 × 6 = $18,000
Remaining = $18,000 − $5,000 = $13,000
Monthly saving = $13,000 ÷ 12 ≈ $1,083.33

$18,000 target, about $1,083/month to close the gap in a year.

How to interpret the result

The gap between target and current savings drives the monthly contribution needed for your deadline.

Key definitions

Target amount: Essential monthly expenses multiplied by your chosen months of coverage.
Remaining amount: The gap between your target and current emergency savings.
Progress percent: Current savings as a percentage of the target amount, capped at 100%.

Common use cases

Setting a monthly auto-transfer amount to build savings
Deciding how many months of coverage fits variable or stable income
Tracking progress toward a fully funded emergency buffer

Tips

Base the target on essential expenses only — housing, food, utilities, insurance, and minimum debt payments — not discretionary spending.
Keep the fund in a liquid, low-risk account like a high-yield savings account.
Revisit the target whenever your expenses change significantly, such as after a move or a new dependent.

Common mistakes

Using total spending instead of essential expenses

Fix: Strip out discretionary costs so the target reflects what you'd actually need to cover a gap in income.

Setting an unrealistic timeline

Fix: Extend the months-to-goal if the required monthly saving feels unaffordable.

Limitations

Expense estimates change with life events.
Not personalized financial advice.