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Emergency fund calculator: how many months of expenses you need
Your target from your own essentials, the months that fit your situation, and the date you get there.
An emergency fund should cover 3 to 6 months of essential expenses, and 9 to 12 if your income is irregular or other people depend on it. With $2,500 a month in essentials, that is $7,500 to $15,000. The calculator below works out your number from your own expenses, suggests how many months fit your situation, and tells you how long it takes to get there at what you can put away each month. Nine currencies, nothing to sign up for.
How many months of expenses should an emergency fund cover?
Three months is the floor, six is the standard answer, and the honest answer depends on how fast you could replace your income. A salaried employee with a second earner at home can rebuild from three months of cushion. A freelancer with two kids and no other income in the house needs closer to a year, because a bad quarter and a broken car can land in the same month.
| Your situation | Months of essentials | With $2,500 a month |
|---|---|---|
| Steady salary, two incomes at home, no dependants | 3 | $7,500 |
| Steady salary, only income at home, or with dependants | 6 | $15,000 |
| Variable income, freelance or commission | 9 | $22,500 |
| Variable income, dependants and no second earner | 12 | $30,000 |
What the number protects you from is not the emergency itself but the loan you would take to cover it. A $1,200 repair on a credit card at 24% costs $288 in interest if it takes a year to clear. Three months of cushion turns that into a transfer.
How do you calculate an emergency fund?
Essential expenses per month, multiplied by the months you want covered. The whole difficulty is in the first number, because most people either use their full monthly spending, which inflates the target and makes it feel impossible, or forget the bills that only arrive once a year.
- Count: rent or mortgage, groceries, electricity, water, gas, phone and internet, transport to work, insurance premiums, minimum payments on every debt, school fees, medication.
- Do not count: restaurants, streaming, gym, clothes, holidays, the savings you make every month. If you lost your job tomorrow, those stop first.
- Add a twelfth of the yearly bills: car insurance, property tax, annual subscriptions. A $1,200 insurance premium is $100 a month of essentials even though no month shows it.
If you have never tracked spending, the essentials usually come out between 55% and 70% of take-home pay. Two months of records replaces that guess with your own figure, and the target usually drops when you see it.
How long does it take to save an emergency fund?
Divide what is missing by what you can put away each month. $15,000 at $300 a month is 50 months, a little over four years. At $500 a month it is 30 months. At $1,000 it is 15. The calculator shows the date as well as the months, because “March 2029” is a plan and “50 months” is a statistic.
| Target | $200 a month | $300 a month | $500 a month | $1,000 a month |
|---|---|---|---|---|
| $5,000 | 25 months | 17 months | 10 months | 5 months |
| $7,500 | 38 months | 25 months | 15 months | 8 months |
| $15,000 | 75 months | 50 months | 30 months | 15 months |
| $30,000 | 150 months | 100 months | 60 months | 30 months |
Start with one month, not six. Most people who set a six-month target with nothing saved give up before the first month is in. One month of essentials is reachable in a quarter for most households, it already covers the most common emergencies, and the habit of moving money on payday is what builds the rest.
Where should you keep an emergency fund?
Somewhere you can reach in a day and that cannot lose value the week you need it. A savings account separate from the one you spend from is the usual answer, and the separation matters more than the rate: money that shares a balance with rent and groceries gets spent, not out of weakness but because you see it as available. If the account pays interest, better, but the fund’s job is to be there, not to grow.
Two places that look right and are not: a term deposit you would pay a penalty to break, and anything whose price moves. The fund is the money you spend on the worst day of the year, and the worst day of the year is often the one when markets are down too.
How to build an emergency fund step by step
- Get the real essentials number. Track two months of spending and separate what would survive a job loss from what would not.
- Set the first milestone at one month. Put the full target somewhere you can see it, but aim at the first month only.
- Move the money on payday. A transfer on day one is a decision made once. A transfer on day 25 is a decision made every month, and it loses.
- Keep it out of the spending account. A separate account, or a savings pocket that is subtracted from your available balance.
- Refill after you use it. An emergency fund that was used did its job. The next transfer goes back to it before anything else.
That is roughly what AI Money does with savings pockets: the fund has its own target and date, the money in it is taken out of the balance you see as available, and the app tells you whether the pace gets you there. Logging the spending that produces the essentials figure does not need a spreadsheet: send the expense on WhatsApp, say it out loud or photograph the receipt, and the free plan stays free.
What it will not do matters too. It does not open a savings account, does not move money for you and does not pay interest. If your transfer is already automated and you only came for the number, take it off this page and skip the download.
Frequently asked questions
Between 3 and 6 months of essential expenses for most people, and 9 to 12 months if your income is variable, other people depend on it, or there is no second earner at home. With $2,500 a month in essentials that is $7,500 to $15,000, or up to $30,000 in the most exposed case. Essentials are rent, food, utilities, transport, insurance and minimum debt payments, not everything you spend.
It is enough when your income is steady and there is a second earner at home, because three months is usually time enough to replace a salary. It is thin if you are the only income, if you have dependants, or if you work freelance, where a slow quarter and an unexpected bill can overlap. In those cases 6 to 12 months is the safer target.
Multiply your essential monthly expenses by the number of months you want covered. Essentials include housing, groceries, utilities, transport, insurance, minimum debt payments and a twelfth of any yearly bills; they exclude restaurants, subscriptions, clothes and holidays. If you have not tracked spending, essentials usually land between 55% and 70% of take-home pay.
Divide the target by what you can save each month. A $15,000 fund takes 50 months at $300 a month, 30 months at $500 and 15 months at $1,000, with no interest counted. Most people get there faster by aiming at one month of essentials first and raising the target once the habit of saving on payday is in place.
In a savings account separate from the one you spend from, reachable within a day and not exposed to price swings. The separation matters more than the interest rate, because money that shares a balance with everyday spending gets spent. Avoid term deposits with a penalty for early withdrawal and anything whose value can drop the week you need it.
Build a small one first, about one month of essentials, then attack the expensive debt, then finish the fund. Without any cushion, the next surprise goes straight back onto the card you are trying to clear. With a month saved, you can put everything above the minimums into the debt and still absorb a repair or a medical bill without borrowing.
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- Consumer Financial Protection Bureau: an essential guide to building an emergency fund
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