Updated September, 2018
File C5-201

Breakeven Sales Volume

Product price can be based on the cost of producing the product. However, there is not a specific price level that you can charge that will assure you that you will cover your costs. Because fixed costs need to be covered regardless of the number of units produced and sold, the number of units you produce and sell determines the price needed to break even. To do this you need to classify the costs into the managerial cost categories of variable and fixed costs.

One approach is to pick a sale price or a series of sale prices and compute how much of the product you will need to sell at each price to break even.

Breakeven sales volume is the amount of your product that you will need to produce and sell to cover total costs of production. This can be computed under a range of sale prices with the formula below.


A key concept of this formula is the Contributions Margin. Contributions Margin is the “selling price less the variable costs per unit”, the denominator in the equation above. It is the amount of money that the sale of each unit will contribute to covering total fixed costs. The breakeven level is the number of units required to be produced and sold to generate enough contributions margin to cover fixed costs.

The example below helps explain the concept. Select a range of sale prices and compute the contribution margin for each price.

table 1

Next, divide total fixed cost by each contribution margin to compute the breakeven sales quantity. Notice that the higher the price, the smaller the quantity you will need to sell to break even. However, at higher prices, the product will be more difficult to sell.

table 2

To prove that the procedure is correct, go through the steps below. First determine gross income.

table 3

Then determine total variable costs.

table 4

Next compute the return over variable costs.

table 5

Finally compute the return over all costs. As shown below, because we were computing breakeven price, the return over all costs is zero.

table 6

A graphic representation is shown in Figure 1. The level of sales is on the horizontal axis. Revenue and costs are on the vertical axis. The revenue line shows the total revenue at each level of sales. The total cost line shows the total cost at each level of sales. The cost at zero sales represents the fixed cost. The level of cost over this amount is the variable cost at various levels of sales. The level of sales where the two lines cross (S1) is the breakeven level of sales. At sales levels above this level (S2), the amount by which the revenue line is above the cost line is profit. At sales levels below this level (S3), the amount by which the cost line is above the revenue line is loss.

figure 1


Don Hofstrand, retired extension value added agriculture specialist, agdm@iastate.edu


Don Hofstrand

retired extension value added agriculture specialist
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