Business Break-Even Calculator

What break-even means for a business

The break-even point is the level of sales at which a business covers all its costs and makes neither a profit nor a loss. Below it, the business makes a loss; above it, each additional sale adds to profit. Knowing this number helps owners set prices, judge whether a product is worth selling, and decide how much risk a new venture carries.

The calculation depends on separating costs into two kinds. Fixed costs, such as rent, salaries and insurance, stay the same whatever is sold. Variable costs, such as materials and packaging, rise with each unit sold. This calculator asks for fixed costs, the selling price per unit and the variable cost per unit.

How the result is worked out

Each unit sold contributes its price minus its variable cost towards covering the fixed costs. This amount is the contribution margin per unit. The number of units needed to break even is the fixed costs divided by that margin, rounded up to a whole unit. The revenue at break-even is that number of units multiplied by the price.

A worked example

Suppose fixed costs are 12,000 per period, each unit sells for 40, and each costs 25 to make. Each unit contributes 15 towards fixed costs. Dividing 12,000 by 15 gives 800 units, which is 32,000 of revenue. Selling 801 units would produce a profit of 15 more than the break-even amount.

Why the price must exceed the variable cost

If the price is at or below the variable cost, each sale adds nothing or loses money, and no volume of sales will ever cover fixed costs. The calculator refuses such figures for this reason. A business in this position needs to change its price, its costs or its product before growth can help.

Checking the cost inputs

The break-even point is only as reliable as the cost split between fixed and variable costs. Some costs, such as electricity or payment processing, rise with each sale, while rent and salaries do not. Misclassifying a cost changes the answer, so review each line before using the figure to set prices or targets.

Break-even also assumes a steady selling price and steady costs. If you plan a discount or expect supplier prices to rise, run the calculation again with the new figures. Testing a few scenarios shows how much margin of safety the business has before it starts losing money.

Using the result

The break-even figure is most useful as a test of realism. Compare the units required with what you can reasonably sell, given your market, your capacity and the time it will take to build demand. If break-even requires more sales than the market can absorb, the plan needs changing.

Test the sensitivity of the answer. Try a lower price, which may be needed to win customers, and a higher variable cost, which can rise with supplier prices. Watch how quickly the break-even point moves. Small changes in margin can shift it a long way.

What the calculator does not include

Real costs are not always cleanly fixed or variable. Some costs are semi-fixed and rise in steps as sales grow. Discounts, returns, sales tax, financing costs and the timing of cash receipts are not modelled. The calculation also assumes every unit sells at the same price and that fixed costs do not change with volume.

Use the calculator to start a conversation about pricing and costs, and to set a sales target. Revisit the figures as the business learns more about its costs and customers, and check them against actual results each period.