"Save three to six months of expenses" is the advice everyone gives — and it's so vague it stops most people before they start. Three months of what, exactly? And is it three or six? Here's how to land on an actual number in about ten minutes.
Start With Your Bare-Bones Monthly Number
Your emergency fund covers expenses, not income. If you lost your job tomorrow, you'd cancel the extras — so don't save for them. Add up only the essentials: rent or mortgage, groceries, utilities, insurance, transport, minimum debt payments, and any non-negotiables like childcare or medication.
Example: someone earning $4,800/month might spend $4,500 in a normal month, but their bare-bones number is $3,100. That $1,400 gap matters — it's the difference between needing $27,000 and needing $18,600 for a six-month fund.
How Many Months? It Depends on Your Income, Not a Rule
The right multiplier depends on how quickly you could replace your income:
3 months — dual-income household, both jobs stable and in different industries. One job loss doesn't zero your income.
6 months — single-income household, or your job is stable but specialized enough that a search could take a while.
9 months — freelance or variable income. Your "emergency" might not be a dramatic event — it can just be two slow months in a row.
Add 3 months to any of the above if you own an older home or car, have a health condition with unpredictable costs, or support dependents on one income.
So the honest range isn't "3–6 months of expenses" — it's roughly $9,300 (3 × $3,100) to $37,000+ depending on your situation, which is why copying someone else's number rarely works.
Where to Keep It
A high-yield savings account, separate from your checking. Not invested — the whole point is that the money is there in a bad month, and bad months for you often coincide with bad months for the market. Separate also means you stop "borrowing" from it for non-emergencies.
How to Build It Without Hating the Process
Treat it like a sinking fund with a deadline. If your target is $9,300 and you can put away $400/month, you're fully funded in about 23 months — and one month covered in just 8. We walked through the monthly math in Sinking Funds Explained; an emergency fund is the same mechanic, just with a bigger target.
Two milestones worth celebrating on the way: $1,000 (covers most single surprises — a car repair, an ER copay) and one full month of expenses (a job loss stops being an immediate crisis).
Track the Target Alongside Your Budget
The fastest way to find your bare-bones number is to see all your spending in one place. Our free One-Page Budget Starter gets you there in five minutes. If you want to track your emergency fund's progress month over month next to the rest of your money, the 2026 Budget Dashboard ($12) does the math automatically in Excel or Google Sheets — and code LAUNCH20 takes 20% off through August 15.