Emergency Fund Calculator
Find out how much you should keep in your emergency fund based on your monthly expenses, and how long it takes to reach your target at your current savings rate.
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How Big Should Your Emergency Fund Be?
An emergency fund is money set aside to cover unexpected costs like a job loss, medical bill, or urgent car or home repair. Its job is to keep a surprise from turning into debt, so it should be safe, accessible, and separate from your everyday spending money.
The right size depends on your situation, but a clear target makes it easier to save with purpose. Once you know your monthly essentials, you can decide how many months of coverage you want and build toward it step by step.
The three-to-six-month rule
The classic guideline is three to six months of essential expenses. Aim for the lower end if you have stable income and a dual-earner household, and the higher end if your income is variable, you are a sole earner, or you work in a field where finding a new job can take longer. Some people keep even more for extra peace of mind.
What counts as essential expenses
Base your target on essential costs, not your full budget. That means rent or mortgage, utilities, groceries, insurance, transportation, and minimum debt payments. You can usually leave out discretionary spending like dining out, travel, and subscriptions, since those can be paused during a true emergency.
Starter fund vs full fund
You do not need the whole amount at once. A starter fund of roughly $500 to $1,000 covers most common surprises and keeps them off a credit card. Once that is in place, keep building toward the full fund of several months of expenses, contributing a fixed amount each month until you reach the goal.
Where to keep it and when to use it
Keep the money liquid and safe in a high-yield savings account, where it stays accessible and earns interest while it waits. Avoid investing it in the stock market, where the value could drop right when you need it. Use the fund only for genuine emergencies, and once you do, make replenishing it your next savings priority.
Frequently asked questions
- A common target is three to six months of essential living expenses, but start with a smaller $500–$1,000 starter fund first. Aim for the higher end (six months or more) if your income is variable or you’re a sole earner.
- Enter your essential monthly expenses (rent or mortgage, utilities, groceries, insurance, minimum debt payments) and how many months of coverage you want. The calculator multiplies them to show your target, and can show how long it takes to get there at a given monthly savings rate.
- Keep it in a separate, FDIC-insured high-yield savings account — safe, liquid, and earning interest. Avoid tying emergency money up in CDs or investments, since you need to reach it instantly and without risk of loss when a surprise hits.
- Build a small $500–$1,000 starter fund first so a surprise doesn’t push you deeper into debt, then focus on high-interest debt, then return to building the full three-to-six-month fund.