Quick answer
A break-even point is the level of sales at which a business covers all its costs and makes neither profit nor loss. It equals fixed costs divided by gross margin percentage. Knowing it tells you the minimum sales needed each month, how much safety margin you have, how new costs such as loan repayments change the target, and whether an investment can realistically pay for itself.
Key points
- Break-even sales = fixed costs ÷ gross margin.
- Margin, not sales, determines how fast you reach break-even.
- New fixed costs, including repayments, raise the target.
- Your safety margin is current sales minus break-even.
Every business has a number below which it loses money and above which it makes money. That number is the break-even point, and knowing it changes how you think about pricing, costs and borrowing. It is simple to calculate, and once you have it, many decisions become clearer. This guide explains the idea, works through examples and shows how to use it.
The formula
Break-even sales = fixed costs ÷ gross margin percentage.
Fixed costs are the costs that stay roughly the same each month regardless of sales: rent, base wages, insurance, software, accounting fees, loan repayments and a fair owner’s wage. Gross margin is the share of each sale left after direct costs, such as stock, materials or direct labour.
If fixed costs are $30,000 a month and gross margin is 40 percent, break-even sales are $30,000 ÷ 0.40 = $75,000 a month. Sell less and the business loses money; sell more and every extra dollar of sales contributes 40 cents to profit.
Worked example: a cafe
An illustrative cafe has monthly fixed costs of $38,000, including rent, core staff and the owner’s wage. Its gross margin, after coffee, milk, food and packaging, is about 65 percent. Break-even is $38,000 ÷ 0.65 ≈ $58,500 of sales a month, or roughly $1,950 a day over 30 days. If the cafe averages $2,300 a day, it has a healthy margin above break-even. If winter drops it to $1,800, it is losing money in those months.
Worked example: a trades business
An illustrative electrical contractor has fixed costs of $45,000 a month, including vans, insurance, office staff and the owner’s wage. On its typical jobs, after materials and the direct labour of its electricians, gross margin is about 35 percent. Break-even is about $128,600 of invoiced work a month. Knowing this, the owner can see that a quiet month at $110,000 is a loss, and that winning a large contract at a thinner margin may not help as much as it appears.
Worked example: an online store
An illustrative online retailer has fixed costs of $22,000 a month and a gross margin of 45 percent after product cost, packaging and payment fees. Break-even is about $48,900 of monthly sales. But advertising is a significant cost that rises with sales; if it is treated as a direct cost, gross margin falls and break-even rises. Deciding how to treat variable marketing costs matters for an accurate number.
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Your safety margin
The gap between current sales and break-even is your margin of safety. A business selling $90,000 a month with break-even at $75,000 has a $15,000 safety margin. If sales dropped by more than that, it would start losing money. A thin margin of safety means one slow month, one lost customer or one cost increase can tip the business into a loss.
How new costs change break-even
Any new fixed cost raises break-even. A $3,000 monthly loan repayment with a 40 percent gross margin adds $7,500 to the monthly sales needed to break even. That is an important check before borrowing: can the business realistically sell enough extra to carry the repayment? If the funding will create extra sales, as with a new machine or a marketing campaign, compare the extra gross profit with the repayment. Our guide is borrowing to grow worth it? explains the reasoning.
Margin matters more than sales
Because break-even depends on margin, small margin changes have big effects. Lifting gross margin from 40 to 45 percent, through pricing, supplier deals or a better product mix, lowers the break-even point from $75,000 to about $66,700 on the same fixed costs. That is often easier than finding thousands of dollars in extra monthly sales. See pricing and margin for cash flow.
Break-even and cash flow
Break-even is a profit measure, not a cash measure. A business can be above break-even and still short of cash if customers pay late or stock ties up money. Use break-even to check viability, and a cash flow forecast to check timing. See profit versus cash flow.
Ways to lower your break-even
- Increase margin by reviewing prices and supplier costs.
- Reduce fixed costs that do not drive sales.
- Convert fixed costs to variable, for example using casuals or contractors for peaks.
- Focus on higher-margin products or services.
- Avoid adding fixed commitments without a clear payback.
Using break-even for planning
Break-even is a planning tool as much as a measure. Before opening a second site, check what sales it needs to break even and whether the location can realistically deliver them. Before hiring, check how much extra margin the new person needs to generate. Before taking on a new lease, calculate how the extra rent changes the target. Each decision becomes a simple question: can the business sell enough, at the margin it earns, to carry this cost? If the honest answer is uncertain, test the idea on a smaller scale first.
Benchmarks for context
The ATO publishes small business benchmarks showing typical cost ratios for many industries. Comparing your costs with these benchmarks can highlight areas where your costs are unusually high, which may be raising your break-even point. Use them as a guide rather than a rule, since every business is different.
Common mistakes in break-even calculations
The most common mistake is leaving out the owner’s wage, which makes the business look viable when it only works because the owner is working for free. Others include forgetting irregular fixed costs such as annual insurance and registrations, treating loan repayments as optional, using an optimistic gross margin that ignores waste, discounts and refunds, and ignoring seasonal swings by using a single annual average. A break-even figure built on realistic inputs is far more useful than a flattering one.
Break-even by month for seasonal businesses
Seasonal businesses should calculate break-even and compare it with expected sales month by month. Some months will be well above break-even and others below. The question is whether the strong months produce enough profit to carry the weak ones, and whether cash reserves or a line of credit can bridge the gap in between.
Check it regularly
Costs and prices change. Recalculate break-even whenever rent, wages, supplier prices or your pricing shifts, and at least annually. Many owners keep a simple spreadsheet and update it quarterly alongside their BAS.
Plan with confidence
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Frequently asked questions
What counts as a fixed cost?
Costs that stay roughly the same regardless of sales, such as rent, base wages, insurance, software, loan repayments and accounting fees.
What is gross margin?
The share of each sale left after the direct cost of the goods or services sold. A $100 sale with $55 of direct costs has a 45 percent gross margin.
How often should I calculate break-even?
Whenever costs or prices change significantly, and at least once a year. Many owners check it quarterly.
Does break-even include paying myself?
It should. Include a realistic owner's wage in fixed costs, or your break-even will understate what the business really needs.
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