What is Cost?
It refers to the monetary expenditure which a firm has to incur in order to purchase or hire the factors of production. It is the expense of purchasing or hiring factor services for production and other business activities.
Classification of Cost / Types of Cost
There are various types of cost:
On the basis of Nature of Costs –
Fixed Cost – It is the cost of fixed inputs used in production. These costs do not vary with the change in volume of production.
Variable Cost – It is the cost of variable inputs used in production. These costs vary with the change in volume of production.
Semi Variable Cost – It refers to costs which are partly fixed and partly variable. These types of cost do not directly affect the level of production but may vary with change in production facilities e.g. administrative cost, maintenance cost, depreciation cost etc.
Total Cost – It refers to the total cost of production.
Total cost = Fixed cost + Variable Cost
Marginal Cost – It refers to the cost of producing one extra unit of a product.
MC = TCn – TCn-1
TCn = Total cost of producing n products, TCn-1 = Total cost of producing n-1 products
On the basis of Expense –
Material Cost – It refers to the cost of procurement and use of any raw material used for production.
Labour Cost – It refers to the payments made to permanent and temporary workers for their services.
Overhead cost – It refers to costs which are semi-variable and vary with the level of production like administrative expenses, cost of indirect material and labour, indirect expenses etc.
On the Basis of Control:
Controllable cost – It refers to costs which can be influenced or controlled by the actions of the organization members.
Uncontrollable cost – It refers to costs which cannot be controlled by the actions of the organizations members.
According to Functions or Operations of a Business:
Preliminary Cost – costs incurred before the commencement of the actual business e.g. rent, interest, product trial, underwriting costs etc.
Cost of Production – cost of material, labour, overheads etc.
Cost Research and Development – cost of innovation, new or improved products, advance production facilities etc.
According to behaviour of cost:
Direct Cost – It refers to costs which involve a direct expense and are easily traceable.
Indirect Cost – It refers to costs which are indirect and not easily traceable.
Explicit or Accounting Cost – It refers to the payments made in monetary terms by a firm, to the owners of factor services required for production.
Implicit or Economic Cost – It refers to the estimated value of all the inputs owned and put to use for production by a firm.
On the basis of relevance in Decision Making:
Opportunity Cost – It refers to the cost of the next best alternative action that is sacrificed in order to pursue the chosen action.
Sunk Cost – It is the cost which is not altered by a change in current business activity. It can be understood as an irrevocable cost of the past business activity which has to be incurred now and is irrelevant to the current business scenario.
Replacement Cost – It is the cost of replacing an asset, plant, machinery, equipment etc.
Imputed cost – These are hypothetical costs which are considered just for the purpose of decision making and do not involve any actual cash outflow.
Real Cost – It refers to the cost of all efforts and sacrifices made by the owners of factors of production in production of a commodity.
Social Cost – It refers to the cost of hardships and sacrifices that a society has to bear due to operation of business activities.
Conversion Cost – It refers to the cost involved in transforming raw materials into finished products. These types of cost do not include the actual cost of raw material. It includes the cost of direct and indirect labour, overheads and expenses.
Other Types of Cost:
Historical Cost – It refers to the actual cost of acquiring an asset or producing a product or service.
Normal Cost – It is a cost which normally incurred in achieving a certain level of output under certain conditions.
Abnormal Cost – It is the cost which is not normally incurred at a given level of output under normal conditions. It is an irregular cost which would not exist in ideal conditions.
Differential Cost – It is the change in cost due to change in level of production.
Incremental Cost – It is the additional cost in relation to a change in the level or nature of business activity.
IC = TC2 – TC1
TC2 = Cost after change, TC1 = Cost before change
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