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Emergency fund calculator (Australia)
"Three to six months of expenses" is a common rule of thumb for an emergency fund, but what does that actually mean for your household? Our free emergency fund calculator turns your essential costs into a target, then shows how long it would take to get there at the amount you can save each pay. It's a planning tool, not a rule: the right number depends on your job, your household and how you'd cope with a surprise bill. Every figure below is a made-up example.
The starting figures are a made-up example: $3,800 a month of essentials and three months of cover gives a target of $11,400. With $1,500 already saved and $200 a fortnight going in, that's $9,900 to go, or 50 pays (just under two years). Change any figure and the result updates. Nothing leaves your browser.
What counts as an essential cost
An emergency fund covers the costs you'd still have if your income stopped or a big bill landed. Base it on your essentials, not your total spending:
- Rent or mortgage repayments
- Electricity, gas, water, phone and internet
- Groceries (a realistic, pared-back amount)
- Transport: fuel, public transport, rego and insurance averaged per month
- Insurance premiums and minimum debt repayments
- Childcare, school costs and medicines
Leave out the things you'd pause in a tight month, like takeaway, streaming extras and holidays. If you already budget by pay, multiply your fortnightly essentials by 26 and divide by 12 to get a monthly figure.
How many months should you aim for?
There's no single right answer. Some questions that can help you choose:
- How steady is your income? Casual, seasonal, commission or self-employed income often calls for a bigger buffer than a permanent salary.
- How many people rely on it? A single-income household with kids may want more cover than a couple who both work.
- What are your big risks? An older car, a pet, or a home you own can all mean larger surprise bills.
- What else is in place? Some people also have leave entitlements or insurance cover. Check what yours actually covers before you count on it.
If three months feels out of reach, start with one month, or even a smaller first goal like $500 or $1,000 (made-up starting points). A small buffer can still stop a car repair or a dental bill from going on a credit card.
Making the timeline shorter
If the calculator says it will take longer than you'd like, there are a few levers you can pull:
- Automate it. Schedule a transfer for payday so the saving happens before the spending.
- Use windfalls. A tax refund, a bonus or money from selling unused things can make a big jump.
- Trim one category. Moving a made-up $25 a fortnight from eating out adds $650 a year.
- Raise it as you go. When a debt is paid off or you get a pay rise, move some of the difference to the fund.
Where to keep it
Most people keep an emergency fund separate from everyday spending so it isn't spent by accident, but still easy to reach when it's needed. The government's Moneysmart saving guides explain the options in general terms. We don't recommend any particular product. Compare what suits you, or speak with a licensed adviser.
Using it, and topping it back up
Using the fund is the whole point, so don't feel bad when you need it. Before you dip in, ask whether the cost is truly unexpected and necessary, or whether it belongs in a sinking fund. Afterwards, put a top-up amount back into your budget each pay until you're back at your target. The calculator can show how long that will take: enter what's left as "already saved".
Emergency fund or sinking funds?
An emergency fund is for the unexpected. Costs you know are coming, like rego, Christmas, school fees and car services, work better in sinking funds: separate pots you fill a little each pay. Keeping the two apart means the emergency fund doesn't get drained by predictable bills. Our sinking funds tracker guide shows how to set them up, and our guide to how much emergency fund you need in Australia covers the thinking behind the target.
A jar for every big cost, including an emergency fund, with a target, due date, progress and a per-pay amount, plus a payday split that shows where each pay goes. It works offline in your browser, your data stays on your device, and there is no bank login. Secure checkout via Payhip.
See the Sinking Funds app · A$19
Want the emergency fund alongside your whole budget, bills and debts? Money HQ (A$59 one-off) brings them together in one place.
Frequently asked questions
How do I calculate my emergency fund?
Add up your essential costs for a month, then multiply by the number of months you want covered. For example (made-up numbers), $3,000 a month × 3 months = $9,000.
Is 3 or 6 months better?
It depends on how steady your income is, who relies on it and what other cover you have. Many people start smaller and build up.
Should I pay off debt or build an emergency fund first?
It depends on your situation. Many people build a small buffer first so a surprise bill doesn't add to debt. For free help, call the National Debt Helpline on 1800 007 007.
Does the calculator store my numbers?
No. The calculator runs in your browser and nothing is sent or saved.
General information only, not financial advice. Examples use made-up numbers. For free, independent help, call the National Debt Helpline on 1800 007 007 or see moneysmart.gov.au.