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Emergency Fund Calculator

Calculate how big your fund should be and how fast you can reach it online. Enter monthly expenses and savings rate — instant, free tool without sign-up.

Updated June 2026

Required monthly deposit

$776

You’ll end up with ~$9,807 after 12 months at 4% APY.

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What it does

An emergency fund calculator. The first question: how big should your emergency fund actually be? Standard guidance says 3-6 months of essential expenses (rent/mortgage, utilities, groceries, insurance, minimum debt payments). Self-employed or single-income households lean toward 6-12 months. Dual-income households with stable jobs can lean toward 3 months.

The second question: how fast can you get there? Enter your target amount, how much you’ve already saved, and your monthly savings rate. The calculator shows the timeline plus the interest you’ll earn at current high-yield savings rates. Pair with our emergency fund guide.

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Example input & output

Input

Essential monthly expenses: $4,000
Target: 6 months = $24,000
Starting balance: $3,000
HYSA APY: 4%
Timeline: 24 months

Output

Required monthly deposit: ~$820
Total saved in 24 months: ~$24,800 (including interest)

The HYSA interest covers about half a month of deposits over 24 months — not huge, but better than 0%.

How to use it

  1. Calculate your essential monthly expenses.
  2. Multiply by 3, 6, or 12 to get your target.
  3. Enter that target as the goal amount.
  4. Enter current savings balance and HYSA APY.
  5. Read the monthly deposit needed to reach the goal by your date.

When to use this tool

  • When starting an emergency fund.
  • When rebuilding after an emergency depleted savings.
  • When switching to self-employment or a less stable income.

When not to use it

  • For long-term savings — money beyond the emergency fund should be invested, not kept in cash.

Common use cases

  • Building a first emergency fund from zero.
  • Sizing a fund around a specific risk (job loss, medical, house repair).
  • Comparing a 3-month vs 6-month target timeline.

Frequently asked questions

Where should I keep my emergency fund?
In a high-yield savings account (HYSA) at an FDIC-insured bank. Instant access, meaningful interest (typically 4% in 2026), zero risk.
Should I invest my emergency fund?
No. The point is it&rsquo;s available when something goes wrong — exactly when investments are most likely to be down.
What counts as an emergency?
Job loss, medical emergency, major car repair, urgent home repair (broken HVAC in winter, plumbing failure), unexpected travel for family emergency. NOT emergencies: routine car maintenance (budget separately), expected medical costs (use HSA), home improvements you wanted anyway, vacation, gifts, taxes (those are predictable). The discipline matters: dipping into the emergency fund for non-emergencies defeats the purpose. Refilling after a real emergency is the priority once income normalizes — return to full target before resuming aggressive investing.
Should I have separate emergency funds for different scenarios?
One unified fund is simpler and works for most. Some advisors recommend tiered: (1) Tier 1 starter fund $1,000 (Dave Ramsey advice for those starting out, before paying down debt). (2) Tier 2 medium fund 1-3 months ($10K-15K typical). (3) Tier 3 full emergency fund 6+ months ($25K-50K). Layered funds: a checking buffer ($1-3K), a HYSA emergency fund (3-6 months), an opportunity fund / sinking funds for known irregular expenses. The 'right' number of buckets depends on your mental model; keep it simple enough to manage.
What's the highest-yield savings account currently?
Top HYSAs in 2026 (rates fluctuate with Fed): Marcus by Goldman Sachs, Ally Bank, Discover Bank, Capital One 360, SoFi (with direct deposit), CIT Bank, Synchrony — typically 4.0-4.5% APY. Skip Chase, Bank of America, Wells Fargo savings (0.01-0.5% APY); the convenience of branch access isn't worth losing 3.5%+ in interest. FDIC insured up to $250K per bank. For larger balances, spread across multiple banks. Money market accounts and Treasury bills offer similar yields with slightly different liquidity profiles.
How do I build an emergency fund while paying off debt?
Standard order: (1) Build $1,000 starter fund in 1-2 months (basic emergency cushion). (2) Pay off high-interest debt (credit cards 18-25% APR) aggressively. (3) Return to full emergency fund 3-6 months. (4) Resume normal investing. Logic: a $5K credit card debt at 22% APR costs $92/month in interest; investing emergency money at 4% earns $17/month. The math favors paying off debt first. The $1K starter fund covers most surprises (urgent car repair, copay, AC repair) so you don't add to credit card debt during the payoff phase.

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