BreakEven and Target Income
CVP analysis is imperative for management. It is used to build an understanding of the relationship between costs, business volume, and profitability. The analysis focuses on the interplay of pricing, volume, variable and fixed costs, and product mix. This analysis will drive decisions about what products to offer, how to price them, and how to manage an organization's cost structure. CVP is at the heart of techniques that are useful for calculating the breakeven point, volume levels necessary to achieve targeted income levels, and similar computations. The starting point for these calculations is to consider the contribution margin.
Contribution Margin
The contribution margin is revenues minus variable expenses. Do not confuse the contribution margin with gross profit as discussed in the previous chapter (revenues minus cost of sales). Gross profit would be calculated after deducting all manufacturing costs associated with sold units, whether fixed or variable. Instead, the contribution margin is a conceptual number reflecting the amount available from each sale, after deducting all variable costs associated with the units sold. Some of these variable costs are product costs, and some are selling and administrative in nature. The contribution margin is generally a number calculated for internal use and analysis; it does not ordinarily become a part of the externally reported data set.
Contribution Margin: Aggregated, per Unit, or Ratio?
When speaking of the contribution margin, one might be referring to aggregated data, per unit data, or ratios. This point is illustrated below for Leyland Sports, a manufacturer of score board signs. The production cost is $500 per sign, and Leyland pays its sales representatives $300 per sign sold. Thus, variable costs are $800 per sign. Each sign sells for $2,000. Leyland's contribution margin is $1,200 ($2,000  ($500 + $300)) per sign. In addition, assume that Leyland incurs $1,200,000 of fixed costs, regardless of the level of activity. Below is a schedule with contribution margin information, assuming 1,000 units are produced and sold:
Total 
Per Unit 
Ratio 

Sales (1,000 X $2,000) 
$2,000,000 
$2,000 
100% 
Variable costs (1,000 X $800) 
800,000 
800 
40% 
Contribution margin 
$1,200,000 
$1,200 
60% 
Fixed costs 
1,200,000 

Net income 
 
What would happen if Leyland sold 2,000 units?
Total 
Per Unit 
Ratio 

Sales (2,000 X $2,000) 
$4,000,000 
$2,000 
100% 
Variable costs (2,000 X $800) 
1,600,000 
800 
40% 
Contribution margin 
$2,400,000 
$1,200 
60% 
Fixed costs 
1,200,000 

Net income 
$1,200,000 
What would happen if Leyland sold only 500 units?
Total 
Per Unit 
Ratio 

Sales (500 X $2,000) 
$1,000,000 
$2,000 
100% 
Variable costs (500 X $800) 
400,000 
800 
40% 
Contribution margin 
$ 600,000 
$1,200 
60% 
Fixed costs 
1,200,000 

Net income 
$ (600 000) 
Notice that changes in volume only impact certain amounts within the "total column." Volume changes did not impact fixed costs, or change the per unit or ratio calculations. By reviewing the data on the previous page, also note that 1,000 units achieved breakeven net income. At 2,000 units, Leyland managed to achieve a $1,200,000 net income. Conversely, 500 units resulted in a $600,000 loss.
Graphic Presentation
Leyland's management would probably find the following chart very handy. Dollars are represented on the vertical axis and units on the horizontal:
Be sure to examine this chart, taking note of the following items: The total sales line starts at "0" and rises $2,000 for each additional unit. The total cost line starts at $1,200,000 (reflecting the fixed cost), and rises $800 for each additional unit (reflecting the addition of variable cost). "Breakeven" results where sales equal total costs. At any given point, the width of the loss area (in red) or profit area (in green) is the difference between sales and total costs.