Practical guide
Break-even point formula in units and revenue
Calculate whole-unit break-even volume from fixed costs and contribution margin, with an example.
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How do you calculate the break-even point?
Divide fixed costs by selling price minus variable cost per unit. That difference is the contribution per unit available to cover fixed costs. This calculator rounds the required volume up to the next whole unit.
A worked break-even example
Assume a hypothetical product sells for $75, costs $30 per unit to deliver, and has $10,000 of fixed monthly costs. Contribution is $45 per unit. The unrounded threshold is 10,000 ÷ 45 = 222.22 units, so the calculator reports 223 units and $16,725 revenue.
At 222 units, contribution is $9,990, leaving a $10 shortfall. At 223 units, contribution is $10,035, covering fixed costs with $35 remaining before other omitted items. The rounding is therefore necessary when products cannot be sold fractionally.
Keep the time period consistent
If fixed costs are monthly, the resulting unit volume is monthly too. Do not combine annual rent with monthly payroll unless both are converted to the same period. Variable costs should be per unit, not the month’s total variable spending.
For a subscription business, decide what one unit means: one subscriber-month, one transaction, or another billable item. Use the corresponding price and service cost. A single blended unit can conceal differences among plans, so document any weighted-average assumption.
Break-even questions
What if price is no higher than variable cost?
There is no finite break-even sales volume under this model. Every sale contributes zero or less toward fixed costs. The tool returns zero at this boundary; that display does not mean the business breaks even without selling anything.
Does break-even mean cash-flow positive?
Not necessarily. This model does not schedule collections, inventory purchases, debt repayments, or taxes. A profitable unit contribution can still require cash before customers pay. Use a cash forecast alongside the unit calculation when timing matters.
Use the break even calculator to reproduce the scenario with your own inputs.