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Break-even sales calculator

Whole units and sales required to cover fixed costs from price and variable cost per unit.

Published 20 September 2026. Last reviewed 27 September 2026.

Break-even sales inputs
Enter the inputs and calculate.

Sources applied

  • Formulas: contribution per unit = price − variable cost; required units = fixed costs / contribution, rounded up to a whole unit; required sales = whole units × price.
  • Figures: supplied by you. No statutory rate or threshold is applied. Definitions follow business.gov.au: pricing.

How it works

Contribution per unit = price − variable cost per unit. Required units = fixed costs / contribution, rounded up. Required sales = whole units × price. Use one product or a stable representative mix and a consistent GST basis.

business.gov.au: pricing

One of the nine business calculators. Calculations run in this browser. The calculator code does not send your inputs to a server or save them automatically. To check, disconnect from the internet once the page has loaded, then calculate.

Planning estimates in AUD. Confirm tax treatment, liability amounts and dates separately. Amounts round to the nearest cent, with exact half cents rounded up.

Written by Ryan Duguid in his own time and on his own equipment. He is a Provisional CA ANZ Member.

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Ryan Duguid is not a registered tax or BAS agent. Nothing here is accounting, tax, legal or financial advice. Outputs are review aids for a qualified professional. This site is not affiliated with or endorsed by the ATO, Xero or Anthropic. Advice and review boundary

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Ryan Duguid, ABN 59 834 031 764

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