More sales do not always mean you reached break-even

The short answer

Revenue is the top line. Contribution is what each unit has left to cover the fixed costs underneath it.

The Break-Even Units helps you turn the inputs into an estimate you can inspect. The useful part is understanding which assumption drives the answer, rather than treating the largest number on screen as a decision by itself.

Work through an example

With fixed costs of 1,000, a unit price of 25 and variable costs of 10, contribution is 15. The exact point is 66.6667 units, so 67 whole units cover those modeled costs.

The example uses explicit inputs so you can reproduce it. Replace them with your own measurements or assumptions, and keep the units consistent. A result can be arithmetically correct while answering the wrong question if the inputs describe something else.

Use this checklist

1. List fixed costs for a single, explicit period.
2. Identify costs that increase with each sale.
3. Check that price exceeds variable cost, then round the target to sellable units.

How the calculation works

Contribution per unit = selling price − variable cost. Exact break-even units = fixed costs ÷ contribution. Whole-unit target is rounded up.

The tool shows its result and supporting values together. Where an item must be bought or counted in whole units, read the rounded count as well as the underlying quantity. Display rounding is separate from real-world uncertainty.

The mistake to avoid

Use a consistent time period and complete cost assumptions. Taxes, returns, multiple product mixes and changing costs can change the result. Break-even is not cash flow.

Compare at least one realistic alternative input before making an important purchase or plan. If the result looks surprising, inspect the units, the source of each input, and what the calculation leaves out first.

A useful next step

Open the Break-Even Units to try the example. You can also explore Reverse Fee Calculator for the next part of the workflow. The related tool is optional; using one estimate does not mean you need to make a purchase or change your routine.

Reference and scope

U.S. SBA: break-even calculator provides background on the method or measurement convention. ToolMallow is not affiliated with that publisher. Product, institution and individual circumstances can differ; use the limitations above alongside the result.