Emergency Fund Calculator
Enter your essential monthly expenses and a target number of months to see how big an emergency fund you need — and how long it takes to build it from here.
How it works
How the target is calculated
Your target is essential monthly expenses × number of months. Essential means the costs you cannot skip — housing, food, utilities, insurance, minimum debt payments and transport — not discretionary spending like dining out or travel. For example, with 3,000 in essential costs and a 6-month goal, the target is 18,000.
How many months to aim for
Three to six months is the common range. Lean lower if your income is stable and a second earner shares the load; lean higher, toward six to twelve months, if you are self-employed, paid on commission, the only earner, or supporting dependents, because an income gap could last longer.
Reading your result
The calculator subtracts what you already hold from the target, then divides the gap by your monthly saving to estimate the months to reach it. A partial fund still helps: many households would struggle to cover a sudden modest expense, so even one month of cover is meaningful progress.
Caveats
Keep the money liquid and safe — a savings account, not stocks — so its value is not down exactly when you need it. The right size is personal: revisit it whenever your rent, family or job changes, and rebuild it after any withdrawal.
Read next
How big an emergency fund should be, and how to build it →
Frequently Asked Questions
How many months should an emergency fund cover?
Three to six months of essential expenses is the common guideline. If your income is variable, you are self-employed, or you are the only earner, leaning toward six to twelve months is safer.
What counts as essential expenses?
Only the costs you cannot avoid in a lean month: housing, utilities, groceries, insurance, transport and minimum debt payments. Leave out dining out, subscriptions and holidays, since you would pause those in a real emergency.
Where should I keep an emergency fund?
In a safe, instantly accessible account such as a high-yield savings account — not in stocks or anything volatile, where the value could be down exactly when you need it.
Should I invest my emergency fund for returns?
The point of an emergency fund is access and stability, not return. That is why this calculator assumes no investment growth. Money you can invest for years belongs in a separate pot.
Should I save an emergency fund or pay off debt first?
A common approach is to build a small starter buffer of about one month first, then tackle high-interest debt aggressively, and finally grow the fund to its full target.
Should I keep saving after I hit my target?
Once you reach the target you can redirect that monthly amount toward investing or other goals. Just top the fund back up after any withdrawal, and revisit the target when your expenses change.
This calculator is an educational estimate, not individual financial advice.