Emergency Fund Calculator

Calculate how much you need in your emergency fund and how long it will take to save it based on your monthly expenses and savings rate.

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Emergency Fund Target

An emergency fund is money set aside in a liquid, accessible account to cover unexpected expenses: job loss, medical bills, car or home repairs, without going into debt. Financial advisors universally recommend having one before investing.

How much to save: The standard recommendation is 3–6 months of essential living expenses. Some advisors suggest up to 12 months for self-employed people, those with variable income, or single-income households.

Calculate your target: Essential monthly expenses = rent/mortgage + utilities + food + minimum loan payments + insurance + essential transport

Emergency fund target = Essential monthly expenses × 3 to 6

Worked example: Monthly essentials breakdown:

  • Rent: $1,800
  • Utilities (gas, electric, water, internet): $310
  • Food and groceries: $620
  • Loan minimum payments: $340
  • Insurance (health, car, contents): $250
  • Transport (fuel or transit): $180 Total essentials: $3,500/month

3-month target: $10,500 6-month target: $21,000

Enter $3,500 and 6 months above and you get $21,000. If you already have $5,000 put by and can save $300 a month, the calculator shows 54 months to close the remaining $16,000. Leave the current balance blank and it will tell you 70 months instead, because it is then answering a different question: building the whole thing from nothing.

Where to keep it:

  • Instant-access or high-yield savings account
  • Money market account
  • Cash ISA (Individual Savings Account) in the UK, where the interest is tax-free
  • NOT in stocks or investments (value can fall when you need it most)
  • NOT in a fixed-term account (withdrawal penalties defeat the purpose)

How to build it: Set up an automatic transfer on payday and pay yourself first. Even $50 a month becomes $600 in a year. Use windfalls such as tax refunds and bonuses to top it up faster.

What it is NOT for: Holidays, Christmas gifts, planned car maintenance, or home improvements. Those are expected costs, so save separately for them as sinking funds.


How we build and check this calculator

This calculator runs entirely in your browser, so the numbers you enter stay on your device. The math behind it is written by hand and tested against worked examples and standard references before the page goes live.

SuperGlobalCalculator is independently built and maintained. See how we build and verify our calculators.


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