Costs are classified in different ways to answer different questions asked by the management. Management wants different kinds of information for different purposes. Hence, costs must be classified and arranged to serve the purpose of the management.
Classification is the process of grouping costs according to their common characteristics. There are various ways of classifying costs. Each classification is for a particular purpose. The important bases of cost classification are the following.
1. Nature of Elements
2. Traceability
3. Functions or Operations
4. Variability or Behaviour
5. Controllability
6. Normality
7. Managerial Purposes
1. Nature of Elements:
In a manufacturing concern, the total cost of a product is made of three elements viz., material cost, labour cost and expenses material cost is defined as the cost of commodities supplied to in undertaking. Labour cost means the cost of remuneration of the employees of an undertaking. The expenses are the cost of services provided to an undertaking and the notional cost of the use of owned assets.
2. Traceability:
On the basis of traceability or indentifiability, costs are classified as direct costs and indirect costs. Costs which are clearly, conceniently and economically identifiable to a costing centre or cost unit are called direct costs. Eg. material and labour costs are clearly traceable to particular product because they are common to several products Eg. rent of the factory cannot be traced to a single product, since it is incurred for all products manufactured in the factory.
3. Functions or Operations:
Costs are classified by functions as manufacturing (production) cost, administration cost, selling and distribution cost. Manufacturing costs are incurred to manufacture the products, including direct material, direct labour and indirect production costs.
4. Variability or Behaviour
Costs can be classified in terms of changes in activity or volume as fixed, variable and semi-fixed (or semi variable) costs.
Fixed Costs:
Fixed cost is a cost which does not change in total amount for a given period of time in spite of changes in quantity of output or volume of activity. It is to be incurred irrespective of changes in output or turnover or level of activity.
Fixed cost depends on passage of time. Hence it is also known as period cost, capacity cost or stand by cost. Examples of fixed cost are rent, rates, insurances, salary etc.