How do you calculate your emergency fund?
Add up what you must keep paying if your income stops, then multiply by the months you want to cover. With $3,000 of essentials, 3 months is $9,000 and 6 months is $18,000.
Target = (essential monthly expenses − income that would keep coming) × months + one-off bills| Monthly essentials | 1 month | 3 months | 6 months | 9 months | 12 months |
|---|---|---|---|---|---|
| $1,500 | $1,500 | $4,500 | $9,000 | $13,500 | $18,000 |
| $2,000 | $2,000 | $6,000 | $12,000 | $18,000 | $24,000 |
| $2,500 | $2,500 | $7,500 | $15,000 | $22,500 | $30,000 |
| $3,000 | $3,000 | $9,000 | $18,000 | $27,000 | $36,000 |
| $4,000 | $4,000 | $12,000 | $24,000 | $36,000 | $48,000 |
| $5,000 | $5,000 | $15,000 | $30,000 | $45,000 | $60,000 |
| $6,000 | $6,000 | $18,000 | $36,000 | $54,000 | $72,000 |
| $8,000 | $8,000 | $24,000 | $48,000 | $72,000 | $96,000 |
Use your bills, not your salary. A target based on income can be far off. Someone earning $5,000 a month who spends $3,000 on essentials would aim for $30,000 using income, or $18,000 using bills. That's $12,000 more to save before feeling safe, for spending you'd likely cut in a real emergency.
How many months should an emergency fund cover?
There's no single right number. The Consumer Financial Protection Bureau (CFPB) says the amount depends on your situation, and suggests thinking about the unexpected costs you've actually had. The months below are rules of thumb this calculator uses as starting points. They aren't official standards.
| Situation | Months | Target | Why this level |
|---|---|---|---|
| Two steady incomes | 3 | $9,000 | A second paycheck keeps coming if one stops. |
| One steady income | 6 | $18,000 | One job loss stops all your pay. |
| Commission, gig, or seasonal pay | 9 | $27,000 | Slow stretches can come before any real emergency. |
| Self-employed or business owner | 12 | $36,000 | A lost client may take time to replace, and you may not qualify for unemployment benefits. |
| Retired | 12 | $36,000 | A cash cushion can spare you from selling investments during a market drop. |
A single person with one income has no second paycheck, so this tool starts them at 6 months. In retirement, a job loss is no longer the risk. The question becomes how long you could avoid selling investments during a market drop, and how a large health or home bill would affect you. Move the number up if your industry is shaky or you have dependents, and down if your job is very secure or you have other money you could reach quickly.
How long will it take to build an emergency fund?
Divide the gap by what you can save each month, then let interest shave a little off. Starting from zero at 3% APY, $18,000 takes 4 yrs 9 mos at $300 a month. Finishing in two years would take $729 a month.
| Goal | $100 a month | $200 a month | $300 a month | $500 a month | $750 a month | $1,000 a month |
|---|---|---|---|---|---|---|
| $1,000 | 10 mos | 5 mos | 4 mos | 2 mos | 2 mos | 1 mo |
| $3,000 | 2 yrs 5 mos | 1 yr 3 mos | 10 mos | 6 mos | 4 mos | 3 mos |
| $6,000 | 4 yrs 9 mos | 2 yrs 5 mos | 1 yr 8 mos | 1 yr | 8 mos | 6 mos |
| $9,000 | 6 yrs 10 mos | 3 yrs 7 mos | 2 yrs 5 mos | 1 yr 6 mos | 1 yr | 9 mos |
| $18,000 | 12 yrs 6 mos | 6 yrs 10 mos | 4 yrs 9 mos | 2 yrs 11 mos | 2 yrs | 1 yr 6 mos |
| $36,000 | 21 yrs 6 mos | 12 yrs 6 mos | 8 yrs 10 mos | 5 yrs 7 mos | 3 yrs 10 mos | 2 yrs 11 mos |
The surprise is how little the rate matters. Over that 4 yrs 9 mos, you'd put in about $17,100 yourself, and interest supplies only the remaining $900. Adding $100 a month gets you there 1 yr 2 mos sooner, while an extra point of APY saves 2 mos. A smaller first goal also gives you an earlier win. The calculator's milestones show when you'd pass $1,000, and when you'd reach one, three, and six months of cover.
What counts as an essential expense?
Count what would still have to be paid if you lost your income tomorrow. Leave out what you'd stop right away.
- Count these: rent or mortgage, utilities, phone, groceries, insurance, medicine, transportation, child care you'd still need, and minimum debt payments.
- Spread out yearly bills: divide property tax, car insurance, and other once-a-year costs by 12, then add them. They're easy to miss.
- Check your health coverage: if your insurance comes through your job, a job loss could change what it costs. Add your best estimate.
- Add one-off bills separately: the advanced options let you add an insurance deductible or out-of-pocket maximum on top of the months, since these can hit at the same time as a lost paycheck.
Be careful about counting other income. A spouse's pay or a pension lowers your target, but only if it would really continue. Each state runs its own unemployment insurance program, and benefits go only to eligible workers. The IRS also says you generally must include unemployment compensation in income. So leave them out if you want to be cautious. For the rest of your spending, our budget calculator can help you find the numbers.
Where should you keep an emergency fund?
Keep it safe and easy to reach. The CFPB says your fund should be safe, accessible, and in a place where you're not tempted to spend it on non-emergencies. It suggests a dedicated account at a bank or credit union as one option. The FDIC insures bank deposits to at least $250,000 per depositor, per FDIC-insured bank, per ownership category.
Be careful with anything that can drop in value or charge you to get out. A CD may charge an early withdrawal penalty, so our CD calculator can show what that would cost. Investments can fall at the same time you lose your job. To compare savings rates, our APY calculator converts them to the same footing.
Should you save an emergency fund or pay off debt first?
Compare the rates, then decide how much cushion you need. In a year, $1,000 at 3% APY earns $30.00. That same $1,000 left on a 24.99% credit card compounding daily costs about $283.79 if the balance just sits there. Those rates are examples.
In this example, the debt costs far more than the savings earn. But with no cushion at all, a surprise bill may go right back on the card. One approach is to do both: a small starter fund, then the debt, then the full target. That's a judgment call, not a rule. Our debt payoff calculator can show how fast the debt would clear. If debt feels unmanageable, a nonprofit credit counselor can review your options.
For the wider picture, see how to build a budget that holds. Once this fund is in place, track where you stand overall with our net worth calculator.
Common questions
Is 3 or 6 months the right amount?
Three to six months is a common rule of thumb, not a standard. Two steady incomes may lean toward three. One income, self-employment, or an unstable industry may call for six or more. The calculator shows both for your bills.
Is $1,000 enough?
It depends on what you're protecting against. It can cover a minor repair, but not a long job search. If you have $3,000 a month in essentials, $1,000 covers about 0.3 months. It can be a useful first milestone, even if you need more in the end.
Does the calculator work with a monthly income instead of expenses?
It asks for expenses, since those are what the fund must pay. If you only know your income, use it as a rough upper limit, then trim the things you'd cut in a real emergency.
Should a couple have one fund or two?
The math works either way. Enter your shared essentials, and pick the situation that fits. If one income would keep coming, enter it as other income under advanced options to see how much it lowers your target.
What if I already have more than my target?
The calculator shows the amount above your target. You might keep it as a larger cushion, or put it toward high-rate debt or long-term goals. That's your choice, and it depends on how exposed you are.
Sources
- An essential guide to building an emergency fund · Consumer Financial Protection Bureau
- Deposit insurance FAQs · Federal Deposit Insurance Corporation
- Unemployment insurance · U.S. Department of Labor
- Topic no. 418: Unemployment compensation · Internal Revenue Service