Emergency Fund Calculator (3-12 months of expenses)
Enter your monthly expenses, target months of coverage, current savings, and monthly contribution. The calculator returns target amount, gap, progress %, months to fill, and target completion date.
- Gap remaining
- 1,000,000
- Months to fill at this rate
- 34
- Estimated completion
- March 2029
How it works
How big should your emergency fund be?
3 months: minimum for low-risk situations. Stable salary, dual-income household, low fixed costs. The bare floor — covers a job-search lull but little else.
6 months: standard recommendation for most adults. Single-earner households, freelancers, anyone with variable income. Provides time to find new work without immediate financial pressure.
9-12 months: cautious to conservative. Recommended for high earners (more time to find equivalent role), self-employed, or those with health/family contingencies. Past 12 months, the opportunity cost (foregone investment returns) usually outweighs benefit.
What expenses to include
Required: housing, food, utilities, insurance, debt minimums, transportation, healthcare. The 'lights stay on, you eat, you stay insured' baseline.
Optional: subscriptions (you can cancel during emergency), entertainment, restaurants, gym, savings/investing contributions (you'd pause these). Use 'survival expenses' as the baseline; this is typically 70-80% of normal monthly spending.
If unsure, look at your bank/card statements over the last 3-6 months. Sum essentials only. That's your monthly expense for emergency-fund purposes.
Where to keep it
High-yield savings account (HYSA): the sweet spot. Earns 3-5% in normal rate environments, instant access, FDIC/equivalent insured. Examples: Marcus (US), Ally, SoFi, Wealthfront Cash, AEON Bank Japan, Rakuten Bank Money Market.
Money market funds: similar yield, typically next-day access. Slightly riskier (not insured) but rare losses.
Don't keep in: stocks (down when you need it most), long-term bonds (rate risk), real estate (illiquid), crypto (volatile). The point of an emergency fund is reliable liquidity, not maximum return.
Don't keep in cash under the mattress: inflation eats 2-4%/year. Even an HYSA at 3% beats cash by a wide margin over time.
Frequently asked questions
›Why not invest emergency funds?
Emergency funds need to be liquid and stable. Stocks can drop 30-50% in a recession — exactly when you might need cash (layoffs, sales freeze, etc.). Hold an emergency fund in cash equivalents (HYSA, money market) and invest separately.
›Is 3 months really enough?
Only if your situation is very stable: dual-income household, recession-proof industry, low fixed costs. Most people need 6 months for peace of mind and realistic job-search time.
›What about credit cards or HELOCs as backup?
Not a substitute. Credit can be revoked or have limits cut precisely when you'd need it (during recession). HELOCs require home equity and can be slow. A real cash fund is independent of these.
›Should the fund be in my partner's name or joint?
Joint is most accessible for couples. If your relationship has any uncertainty, separate funds give individual security. Most financial advisors recommend joint plus individual emergency funds.
›I have debt — should I save or pay off first?
Build at least $1,000 (or 1 month of expenses) as a starter buffer first. Then aggressively pay off high-interest debt (credit cards, payday loans). Then resume building the full emergency fund. Low-interest debt (mortgage, student loans <5%) can be paid in parallel with savings.
›Should the target adjust for inflation?
Yes, but slowly. Recalculate annually using current monthly expenses. As your expenses grow, your target grows. The HYSA interest helps offset inflation but doesn't fully match.
›Can I pause contributions when life is calm?
Yes, once at target. Beyond the target, additional contributions to emergency fund have low return; redirect to retirement or other savings. Just make sure to recalculate target annually.
›Does the data leave my browser?
No. Calculation runs locally; nothing is sent to a server.
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