1. Summary
  2. Importance of Cost Behaviour
  3. Types of cost by Behavior
  4. Cost Functions


Cost Behaviour is the modification within the behavior of a price (or costs) because of a modification in commercial activity. The study of this transformation is value behavior analysis. for instance, the electricity value can move up if a business extends the operating hours. However, not all prices modify with commercial activity. And, some prices could stay stagnant despite a modification in commercial activity. as an example, a corporation must pay insurance whether or not or not it’s operative. Some prices don’t modify in proportion to the modification in business operations. a corporation typically uses mathematical value functions to check the behavior of prices.

Before analyzing the behavior of prices, a manager must perceive the crucial business activities that will impact the prices. Usually, a manager will outline activity levels in terms of bucks, units, miles driven, and more. Moreover, the manager ought to try and confirm the correlation between activity levels and prices.

Importance of Cost Behaviour

The following points highlight the importance of value behavior:

  • A manager must perceive the behavior of the prices once making an annual budget. Knowing this permits the manager to see beforehand if any value can decline or rise with the modification within the commercial activity. for instance, if a corporation is working at the total production capability, then to meet a lot of demand, the corporate can ought to invest a lot of within the mechanical system.
  • Understanding value behavior is crucial for cost-volume-profit analysis further. The cost-volume-profit (CVP) analysis studies the impact of modification in prices and volume on the profit.
  • It helps the management in coming up with dominant prices.

Types of cost by Behavior

Primarily, there are 3 varieties of value by behavior:

Variable Cost

Such prices vary directly (or in direct proportion) with the modification within the commercial activity. Direct proportion suggests that, if the activity level changes by 100 percent, then the variable value should additionally modification by 100 percent. It holds sensible for each rise and a decrease within the variable value. for instance, displays are a variable value for a mobile manufacturer. A lot of the number of mobiles a manufacturer produces, a lot of are going to be the price spent on displays.

An interesting observation is that the variable value per unit remains constant despite a modification within the level of commercial activity. for instance, the whole variable value of the Company alphabet for 3 straight quarters is $5000, $20,000, and $15,000. Company alphabet produces 5000, 20000, and 15000 units, severally. The variable value per unit for all told 3 cases is going to be $1.

Fixed cost

These prices don’t modify with any modification in commercial activity. for instance, a business can still have to be compelled to pay rent although it generates zero sales. Depreciation is another example of a hard and fast value.

A point to notice is that a hard and fast value per unit could increase or decrease with the modification within the level of commercial activity. for instance, suppose the fixed charge for a business is $15,000, however, the units made for the 3 straight quarters were 3000, 5000, and 1000. The fixed charge per unit within the 3 cases is $5, $3, and $15, severally.

Mixed or Semi-variable cost

Such prices are a mix of fastened and variable prices and so, contain the weather of each. for instance, a web bill includes a hard and fast monthly charge and a variable fee-supported usage. Generally, these prices aren’t helpful to the corporate in their original type. So, accountants typically split them to support their fastened and variable parts. To do so, they use value behavior analysis techniques, like Scatter diagrams, multivariate analysis, poker technique, and more.

Cost Functions

As aforementioned within the initial paragraph, corporations use mathematical value functions to check the behavior of prices, typically the Mixed worth. a price performance is usually within the kind of a mathematical equation, like y = magnetic flux unit + b. One may also plot it on a graph. within the equation, b is the fixed charge, x is the range of units, and m is the variable value or the slope.

To effectively or alter the utilization of a price performance, one must think about the subsequent assumptions:

  • Any modification within the value driver explains the distinction in prices.
  • One will summarize the price behavior into a linear cost performance having a relevant vary. The vary here suggests that the sector inside that the link between the price and also the level of activity holds.

One will use quantitative techniques to outline a price performance and, in turn, analyze the price behavior. the best technique is the poker technique, which considers the best and lowest values of driver and also the total prices to that cost driver contributes.