What an emergency fund is for
An emergency fund, sometimes called a rainy-day fund, is money set aside for the expenses you cannot plan: a job loss, a medical bill, a car repair or an urgent trip home. With a cushion in place you can pay for these without a credit card or a loan, and a bad month does not turn into months of debt.
The savings target is simple: your essential expenses for one month, times the number of months you want to cover.
With $3,000 of essential expenses a month, $5,000 already saved and $500 added each month, without interest:
| Coverage | Target | Still needed | How long to build |
|---|---|---|---|
| 3 months | $9,000 | $4,000 | 8 months |
| 6 months | $18,000 | $13,000 | 26 months |
| 9 months | $27,000 | $22,000 | 44 months |
| 12 months | $36,000 | $31,000 | 62 months |
What counts as an essential expense
Count what you would still have to pay if your income stopped tomorrow and you cut everything else:
- Housing: rent or mortgage, property tax and HOA fees if you pay them monthly.
- Utilities: electricity, heating, water, phone and internet.
- Food: groceries, not restaurants or takeout.
- Insurance and health: health, car, home or renters insurance and regular medical costs.
- Transportation: fuel, transit passes, car payments.
- Debt and family: minimum payments on loans and cards, childcare and child support.
Subscriptions, travel, dining out and new purchases stay out. If you lose your job, you would pause them. The budget planner helps you sort your spending into needs and wants first.
Where to keep your emergency fund
The money needs to be safe and available within a day or two, not invested for growth. A separate savings account works well for most people: keeping it apart from your checking account makes it less tempting to dip into. High-yield savings accounts and money market accounts pay interest while the money stays accessible. In the US, check that the bank is FDIC insured or the credit union is NCUA insured.
Stocks are a poor fit for this money. Their value can fall at the same time as you lose your job, and you might have to sell at a loss when you need the cash. Certificates of deposit can work for part of a large fund, but early withdrawal usually costs a penalty.
When to use it, and when not
A good test has three parts: is it unexpected, is it necessary, and is it urgent? A job loss, a broken furnace or an emergency room bill passes all three. A sale, a vacation or a planned purchase like new tires that you knew were coming does not. Save for those separately as sinking funds. After you use the fund, rebuild it before you go back to extra spending.
How to use the emergency fund calculator
- 1Enter your monthly essential expenses as one total, or switch to List them and add each essential expense.
- 2Choose how many months of expenses to cover, for example 3, 6, 9 or 12 months.
- 3Add what you have saved so far, what you can save each month and, if you like, the interest rate of your savings account.
- 4Read your target, how much is still needed and how long it takes to build, compare the targets for other months of coverage, and copy the result or a link.
Frequently asked questions
How many months of expenses should an emergency fund cover?
Three to six months of essential expenses is a common rule of thumb. Aim for the higher end, or more, if you are the only earner in your household, are self-employed, have an irregular income, work in an unstable industry or have dependents. Two stable incomes and secure jobs can make three months enough.
Should I use my take-home pay or my expenses?
Your essential expenses. The fund has to keep you going without a paycheck, and in that case you would cut extras like dining out and travel. Using essentials gives a smaller, more reachable target than a multiple of your full income.
Should I build an emergency fund or pay off debt first?
Many people do both in steps: first a small starter fund so a surprise bill does not go on a credit card, then extra payments on high-interest debt, then the full fund of several months. Without any cushion, the next emergency tends to undo the progress on debt.
Does the calculator include interest?
Only if you enter a rate. Enter the annual percentage yield (APY) of your savings account and the calculator adds interest each month before your deposit. Rates on savings accounts can change at any time, so the date is an estimate.
What if I have to use my emergency fund?
That is what it is for. Use it, then pause extra spending and rebuild it with the same monthly amount until you are back at your target. Enter your new balance here to see how long the refill takes.