How much should be in an emergency fund?
The Consumer Financial Protection Bureau says the right amount depends on your situation, and suggests looking at the unexpected expenses you've actually had and what they cost. A common rule of thumb is 3 to 6 months of essential expenses. Lean toward more if:
- you're self-employed, a freelancer, or paid on commission, so your income moves around;
- your household depends on one income, or you support children or other family;
- your job would take a long time to replace, or you have health costs that are hard to predict.
Fewer months can be enough if two people have steady incomes and either could cover the essentials. If the full target feels far away, start with one month of essentials, or even a few hundred dollars: in the Federal Reserve's survey of 2024, 63% of adults said they would cover a $400 emergency expense with cash or its equivalent, which means more than a third couldn't.
Typical targets
Using the essential costs in this calculator's example ($3,250 a month):
| Months of cover | Target | Time to save at $400/month from $2,000 (4% APY) |
|---|---|---|
| 1 month | $3,250 | 4 months |
| 3 months | $9,750 | 1 yr 7 mo |
| 6 months | $19,500 | 3 yrs 5 mo |
| 12 months | $39,000 | 6 yrs 8 mo |
How the calculator works
Your target is your essential monthly costs times the months of cover. "How long your savings last" divides what you have now by those monthly costs. To find when you'll reach each milestone, the calculator adds your monthly deposit at the end of each month and compounds interest monthly from the APY, the same model as our savings goal calculator.
Where to keep it, and when to use it
- Somewhere separate and easy to reach. A savings account at a federally insured bank or credit union keeps the money safe, available within a day or two, and out of your everyday spending. Stocks are a poor fit: they can be down right when you need the money.
- Use it for real emergencies. Job loss, medical bills, urgent car or home repairs. Expenses you can see coming, like annual insurance premiums or holidays, are better handled with sinking funds, so they don't drain your safety net.
- Refill it after you use it. Put the monthly amount back on autopilot until you're back at your target.
- Have high-interest debt too? Many people build a small starter fund first so a surprise doesn't go on a credit card, then put extra money toward the debt. The debt payoff calculator shows how fast that goes.
FAQ
Should the emergency fund cover my full income or just expenses?
Just essential expenses. In an emergency you'd cut extras, and you don't need to replace money you'd normally save or invest. That's why this calculator asks for costs, not income.
Is 6 months of expenses too much?
Not if your income is irregular or your household relies on one paycheck. With two stable incomes, 3 months is a common target. The money isn't wasted either way: in a savings account it earns interest while it waits.
Does unemployment insurance change how much I need?
It can lower it, but benefits usually replace only part of your pay, take time to start, and don't cover everyone (self-employed people usually don't qualify). Plan with your own savings first.
Sources: CFPB, An essential guide to building an emergency fund; Federal Reserve, Economic Well-Being of U.S. Households in 2024 ($400 expense question). For education and planning, not financial advice. Last checked November 6, 2026.