Break-Even Calculator

Break-Even Analysis for Australian Businesses

Break-even analysis identifies the exact point at which total revenue equals total costs - where you are making neither a profit nor a loss. Every unit sold beyond that point contributes directly to profit. For Australian SMBs, understanding your break-even point is essential before setting prices, launching a new product line, taking on a lease, or hiring additional staff. If your break-even unit count is higher than your realistic sales forecast, you need to either lower costs or raise prices before proceeding.

The contribution margin - selling price minus variable cost per unit - tells you how much each sale contributes toward covering fixed costs. A higher contribution margin means fewer units needed to break even. A common mistake is misclassifying costs: fixed costs do not change with output (rent, salaries, insurance, software subscriptions), while variable costs scale directly with each unit produced or delivered (materials, freight, direct labour, commissions). Mixing these up produces a meaningless break-even figure. Note that in Australia, prices for consumer-facing businesses are typically quoted GST-inclusive, so make sure your selling price inputs are consistent (all ex-GST or all inc-GST) to avoid a 10% error in your results.

Break-even analysis is also a pricing tool. If your current price produces a break-even point that is too high, the calculator shows exactly how a price increase of AU$5, AU$10, or AU$20 changes the equation. Similarly, if a major fixed cost changes - such as moving to a larger premises - you can model the new break-even revenue before signing a lease.

Worked example: packaging manufacturer considering a second shift

A Melbourne corrugated packaging manufacturer wants to know whether adding a second production shift is viable. Current figures (ex-GST):

The second shift adds AU$40,000 per month in fixed costs (shift supervisor salary, additional insurance, utility increase). The contribution margin stays the same because raw material and direct labour costs per unit do not change. Break-even jumps from 54,839 to 80,645 units. The owner checks current demand: existing orders plus pipeline customers total roughly 95,000 units per month. At that volume, the second shift generates (95,000 - 80,645) x AU$1.55 = AU$22,251 in additional monthly profit. The decision is viable, but only if the pipeline demand is confirmed. Use the profit margin calculator alongside to check that the resulting net margin is acceptable after overheads.

Common mistakes in break-even analysis

Treating semi-variable costs as fixed. Electricity, freight, and overtime wages often have a fixed base plus a variable component. If you classify all of electricity as fixed, you understate variable cost per unit and the calculator will report a lower break-even than reality. Split these costs: the base charge goes into fixed costs, the per-unit consumption goes into variable costs.

Using blended averages across product lines. If you sell three products at different margins, a single blended break-even number can be misleading. Product A might be profitable at current volumes while Product B is losing money. Run the analysis per product line, or at minimum weight the contribution margin by your expected sales mix.

How to use this calculator

1. Enter your total monthly or annual fixed costs (rent, salaries, insurance, subscriptions).
2. Enter the selling price per unit and the variable cost per unit (materials, direct labour, commissions).
3. Review the break-even units and break-even revenue figures.
4. Optionally enter a target profit to see the unit volume required to hit that goal.

Frequently asked questions

What is a good contribution margin ratio?

There is no universal benchmark - it varies widely by industry. Software and professional services typically have contribution margins above 60–70% because variable costs are low. Manufacturing and trade businesses often see margins of 20–40%. The key question is whether your contribution margin is sufficient to cover your fixed cost base at a realistic sales volume. If not, the business model needs to change before it can be profitable.

Should I include GST in my selling price input?

No - use ex-GST figures consistently. If your listed price is AU$110 including GST, your revenue is AU$100; the AU$10 GST is collected on behalf of the ATO and is not your income. Using GST-inclusive prices will make your break-even look better than it actually is.

How does break-even analysis apply to service businesses?

Service businesses can use hours as the "unit." Set your hourly rate as the selling price and your direct hourly cost (subcontractors, software, variable overheads) as the variable cost. The output will show the minimum billable hours needed to cover fixed overheads - a useful check against capacity and target utilisation rates.