Using a Break-Even Calculator in Australia: A Step-by-Step Guide
Calculates how many units you need to sell to cover your costs. This guide walks through what each input means, the formula behind the answer and a worked example using typical Australian figures. You can follow along in the free Break-Even Calculator.
Why it matters
Australian businesses deal with GST at 10%, BAS reporting, PAYG withholding for staff, super guarantee obligations and company or individual tax depending on structure. Getting pricing and margins right is the difference between busy and profitable.
What you need to enter
The calculator asks for 3 inputs. The table shows each one with the example value used later in this guide.
| Input | Example value |
|---|---|
| Fixed costs ($) | 10000 |
| Price per unit ($) | 50 |
| Variable cost per unit ($) | 30 |
The formula
Break-even units = fixed costs ÷ (price − variable cost per unit).
Worked example
Entering the example values above gives these results:
| Result | Value |
|---|---|
| Break-even units | 500 |
| Break-even revenue | $25,000.00 |
| Contribution margin per unit | $20.00 |
The headline figure is 500 (break-even units). Change any input in the calculator and every result updates instantly, so you can test different scenarios side by side.
How the break-even units changes with fixed costs
The table below keeps every other input at the example value and moves only “Fixed costs ($)” up and down by 10% and 20%. It shows how sensitive the break-even units is to that one figure.
| Fixed costs ($) | Break-even units |
|---|---|
| 8,000 | 400 |
| 9,000 | 450 |
| 10,000 | 500 |
| 11,000 | 550 |
| 12,000 | 600 |
At 8,000 the result is 400; at 12,000 it is 600. If a small change in this input moves the answer a lot, it is worth double-checking that figure before you rely on the result.
A practical tip
Test a price rise here. A small increase in margin can cut break-even volume sharply.
Keep going
Before relying on the number, read Common Break-Even Mistakes (and a Better Way). You might also find these guides useful:
- Contractor Hourly Rate Calculator Explained for Australians
- How the Employee Cost Calculator Works (With a Worked Example)
- Discount Calculator: Formula, Example and What the Result Means
Frequently asked questions
- When do I need to register for GST?
- When your annual GST turnover reaches $75,000, or $150,000 for non-profits. Taxi and ride-share drivers must register regardless of turnover.
- What company tax rate applies?
- 25% for base rate entities with turnover under $50 million, and 30% for other companies.
- Should I talk to an accountant?
- Yes, for structure, tax planning and compliance. These calculators give quick estimates only.
Run your own numbers in the Break-Even Calculator.
Open the calculatorGeneral information only. Rates and thresholds change, usually on 1 July. Confirm current figures with the ATO or the relevant authority, and get personal advice for decisions about your situation.