Methods and Techniques of Costing

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  Methods and Techniques of Costing

Introduction:- It is necessary to understand the difference between the costing methods and techniques. Costing methods are those which help a firm to compute the cost of production or services offered by it. On the other hand, costing techniques are those which help a firm to present the data in a particular manner so as to facilitate the decision making as well as cost control and cost reduction. Costing methods and techniques are explained below.

Know more about "Cost Accounting" and "Financial Accounting"

Methods of Costing

The following are the methods of costing.

Job Costing:- This method is also called as job costing. This costing method is used in firms which work on the basis of job work. There are some manufacturing units which undertake job work and are called as job order units. The main feature of these organizations is that they produce according to the requirements and specifications of the consumers. Each job may be different from the other one. Production is only on specific order and there is no pre demand production. Because of this situation, it is necessary to compute the cost of each job and hence job costing system is used. In this system, each job is treated separately and a job cost sheet is prepared to find out the cost of the job. The job cost sheet helps to compute the cost of the job in a phased manner and finally arrives the total cost of production.

Batch Costing:- This method of costing is used in those firms where production is made on continuous basis. Each unit coming out is uniform in all respects and production is made prior to the demand, i.e. in anticipation of demand. One batch of production consists of the units produced from the time machinery is set to the time when it will be shut down for maintenance. For example, if production commences on 1st January 2007 and the machine is shut down for maintenance on 1st April 2007, the number of units produced in this period will be the size of one batch. The total cost incurred during this period will be divided by the number of units produced and unit cost will be worked out. Firms producing consumer goods like television, air-conditioners, washing machines etc use batch costing.

 

Process Costing: - Some of the products like sugar, chemicals etc involve continuous production process and hence process costing method is used to work out the cost of production. The meaning of continuous process is that the input introduced in the process I travels through continuous process before finished product is produced. The output of process I becomes input of process II and the output of process II becomes input of the process III. If there is no additional process, the output of process III will be the finished product. In process costing, cost per process is worked out and per unit cost is worked out by dividing the total cost by the number of units. Industries like sugar, edible oil, chemicals are examples of continuous production process and use process costing.

 

Operating Costing: - This type of costing method is used in service sector to work out the cost of services offered to the consumers. For example, operating costing method is used in hospitals, power generating units, transportation sector etc. A cost sheet is prepared to compute the total cost and it is divided by cost units for working out the per unit cost.

 

Contract Costing:- This method of costing is used in construction industry to work out the cost of contract undertaken. For example, cost of constructing a bridge, commercial complex, residential complex, highways etc is worked out by use of this method of costing. Contract costing is actually similar to job costing, the only difference being that in contract costing, one construction job may take several months or even years before they are complete while in job costing, each job may be of a short duration. In contract costing, as each contract may take a long period for completion, the question of computing of profit is to be solved with the help of a well defined and accepted method.

 

Technique of Costing

 

As mentioned above, costing methods are for computation of the total cost of production/services offered by a firm. On the other hand, costing technique help to present the data in a particular format so that decision making becomes easy. Costing techniques also help for controlling and reducing the costs. The following are the techniques of costing.

 

Marginal Costing:- This technique is based on the assumption that the total cost of production can be divided into fixed and variable. Fixed costs remain same irrespective of the changes in the volume of production while the variable costs vary with the level of production, i.e. they will increase if the production increases and decrease if the production decreases. Variable cost per unit always remains the same. In this technique, only variable costs are taken into account while calculating production cost. Fixed costs are not absorbed in the production units. They are written off to the Costing Profit and Loss Account. The reason behind this is that the fixed costs are period costs and hence should not be absorbed in the production. Secondly they are variable on per unit basis and hence there is no equitable basis for charging them to the products. This technique is effectively used for decision making in the areas like make or buy decisions, optimizing of product mix, key factor analysis, fixation of selling price, accepting or rejecting an export offer, and several other areas.

Standard Costing: - Standard costs are predetermined costs relating to material, labor and overheads. Though they are predetermined, they are worked out on scientific basis by

conducting technical analysis. They are computed for all elements of costs such as material, labor and overheads. The main objective of fixation of standard cost is to have benchmark against which the actual performance can be compared. This means that the actual costs are compared with the standards. The difference is called as ‘variance’. If actual costs are more than the standard, the variance is ‘adverse’ while if actual costs are less than the standard, the variance is ‘favorable’. The adverse variances are analyzed and reasons for the same are found out. Favorable variances may also be analyzed to find out the reasons behind the same. Standard costing, thus is an important technique for cost control and reduction.

 

Budgets and Budgetary Control:- Budget is defined as, ‘a quantitative and/or a monetary statement prepared to prior to a defined period of time for the policies during that period for the purpose of achieving a given objective.’ If we analyze this definition, it will be clear that a budget is a statement, which may be either in monetary form or quantitative form or both. For example, a production budget can be prepared in quantitative form showing the target production, it can also be prepared in monetary terms showing the expected cost of production. Some budgets can be prepared only in monetary terms, e.g. cash budget showing the estimated receipts and payments in a particular period can be prepared in monetary terms only. Another feature of budget is that it is always prepared prior to a defined period of time which means that budget is always prepared for future and that too a defined future.

 

For example, a budget may be prepared for next 12 months or 6 months or even for 1 month, but the time period must be certain and not vague. One of the important aspect of budgeting is that it lays down the objective to be achieved during the defined period of time and for achieving the objectives, whatever policies are to be pursued are reflected in the budget.

 

Budgetary control involves preparation of budgets and continuous comparison of actual with budgets so that necessary corrective action can be taken. For example, when a production budget is prepared, the production targets are laid down in the same for a particular period. After the period is over, the actual production is compared with the budget and the deviation is found out so that necessary corrective action can be taken.

 

Budget and Budgetary Control is one of the important techniques of costing used for cost control and also for performance evaluation. The success of the technique depends upon several factors such as support from top management, involvement of employees and co-ordination within the organization.