Margin and pricing
Break-even point calculator
The break-even point is the volume at which revenue finally covers costs. Divide fixed costs by the contribution each unit makes, which is the price less the cost of producing that one unit.
Costs that arrive even with no sales
Average price achieved, not list price
Cost incurred only when one sells
The formula
- Fixed costs
- Costs that do not move with volume over the period: rent, salaries, software, insurance, professional fees. Include your own salary at what it would cost to replace you, for the same reason it belongs in net margin. A break-even point calculated without the founder in it is the volume at which the business stops losing money while the founder works free.
- Price per unit
- What customers actually pay on average, not the list price. If a fifth of your volume goes out on promotion, the average is meaningfully below the tag, and using the tag understates the volume you need by the same proportion.
- Variable per unit
- Costs incurred only because you sold that one unit: the item itself, inbound freight, payment processing, packing materials, outbound shipping. The test is whether the cost disappears if that sale does not happen. Most of the difficulty on this page lives in deciding which costs pass that test.
A worked example
The outdoor gear brand runs at 87,000 of fixed costs a quarter. The average order is 250 and the variable cost behind it is 187.50, so each order contributes 62.50. Break-even is 1,392 orders, or 348,000 of revenue. The brand does 1,600 orders, so it clears the line by 208 orders and makes 13,000.
Put the founder salary in at 15,000 a quarter and fixed costs become 102,000. Break-even moves to 1,632 orders. The brand is doing 1,600, which is thirty-two orders short of genuinely breaking even, and the same conclusion the net margin page reached by a different route.
Now the part that catches people. The warehouse handles about 1,800 orders a quarter. Push volume to 2,500 and the brand needs a second unit and another person in it, so fixed costs rise to roughly 120,000 and break-even jumps from 1,632 to 1,920 orders. At 2,000 orders, twenty-five percent more volume than today, the brand makes 5,000 rather than 13,000. Growth moved the finish line further away than it moved the runner.
The lesson is not that growth is bad. It is that fixed costs are only fixed inside a capacity band, and the break-even point is a different number in every band. A plan that assumes today figure will hold at twice the volume is not a plan.
When to use it
Break-even is at its most useful before a commitment rather than after one. A new product, a second location, a hire, a piece of equipment: work out the volume that covers it and ask whether that volume is plausible given what you sell today. A break-even you cannot reach in a season is a signal to change the model, not to sell harder.
It is also the honest way to evaluate a price increase, and the arithmetic surprises people. Raising the brand average order from 250 to 275 lifts contribution from 62.50 to 87.50 and drops break-even from 1,392 orders to 995. The brand could lose nearly thirty percent of its volume and be no worse off. That is the mirror image of the discount problem, and it is the argument most businesses never run.
Convert the answer into time before acting on it. Units are abstract, months are not. Divide the break-even volume by a realistic monthly sales rate and you get the number that actually matters, which is how long you are underwater and therefore how much cash you need to survive the wait.
Where it misleads
The fixed and variable split is a judgement rather than a fact, and the result moves with it. Fulfilment labour is variable in theory and fixed in practice, because you cannot send someone home for an afternoon when orders are light. A delivery van is fixed until the second one. Anything genuinely semi-variable has to be split by estimate, and two reasonable people will produce two different break-even points from the same accounts.
Fixed costs step rather than hold. They stay flat within a capacity band and jump at the edge of it, so break-even is a series of points rather than one. The dangerous zone is just past a step, where the business has taken on the higher cost base and not yet grown into it, and where the calculation done before the step said everything was fine.
It assumes a single product or an unchanging mix. Where you sell several things at different margins, the honest version uses a weighted average contribution based on the mix you actually expect. If the mix shifts toward lower-margin lines, break-even rises without a single cost or price having moved.
It also assumes the price holds. Every discount reduces contribution and pushes break-even up, which is why a promotional quarter can miss break-even on higher revenue than a quarter that made money. Run the calculation at the price you will realistically achieve rather than the one on the website.
Finally, break-even is a volume answer to what is often a timing question. Covering costs eventually is not the same as surviving until you do. Payback period asks the cash question directly, and for anything funded out of working capital it is the more urgent of the two.
Frequently asked
What is the break-even formula?
Fixed costs divided by contribution per unit, where contribution is the selling price less the variable cost of that unit. The result is the number of units needed to cover fixed costs exactly, at which point profit is zero.
What counts as a fixed cost?
Anything that does not change with the number of units sold over the period: rent, salaries, insurance, software, professional fees. The practical test is whether the cost still arrives in a month with no sales. Costs that only exist because a sale happened are variable.
Should the owner salary be included in fixed costs?
Yes, valued at what it would cost to hire a replacement. Excluding it produces the volume at which the business stops losing money while the founder works for nothing, which is a different and much lower bar than the business actually working.
How is break-even calculated with multiple products?
Use a weighted average contribution per unit based on the expected sales mix, then divide fixed costs by that figure. The result is only valid while the mix holds, so a shift toward lower-margin lines raises break-even even when nothing about costs or prices changed.
How do I turn break-even units into a timeline?
Divide the break-even volume by a realistic sales rate per month. That converts an abstract unit count into the number of months spent below the line, which is what determines how much working capital is needed to get there.
Numbers are the easy part
Getting the calculation right takes two inputs. Getting an organization to agree on what counts as gain, what counts as cost, and what the number should change takes considerably longer.
That translation work is most of what I do. Westphal Solutions builds websites, tools, and reporting for nonprofits and growing teams, including the kind of measurement setup that makes a number like this one worth trusting in the first place.
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