Job Order Costing System: Concept, and its role in control and deviation analysis
The Job Order Costing System is one of the most important costing systems used by industrial and service establishments that operate on a special order or non-standard production basis. This system, sometimes referred to simply as a job order, is characterized by its high capacity for tracking the cost of each production order independently, which helps management make quick and accurate decisions and achieve effective resource control.
In this article, we will present the concept of the job order costing system , how to calculate it, its role in production control, as well as a comprehensive explanation of how to calculate deviation standards and methods of dealing with them.
First: What is a job order costing system?
Job order costing is an accounting method used to group and allocate costs to specific production orders, so that the cost of each order is determined separately.
Key characteristics of production orders:
- Production is based on the customer's request and the specifications he sets.
- Every production order has its own specific specifications.
- The ability to accurately determine the cost of each unit or order.
The cost-effectiveness of a job order system is suitable for industries such as:
- Contracting
- Printing
- Furniture
- Engineering industries
Second: Job Order Cost Elements
To calculate the cost of a job order, three main elements are combined:
1. Direct materials
These are the materials that go directly into the manufacturing of the product.
Example: Wood in the furniture industry.
2. Direct wages
Wages of workers who work on production lines directly on the job order.
3. Indirect manufacturing costs
like:
- electricity
- Rent
- Equipment maintenance
- Supervision
Third: How to calculate the cost of a job order
A job order cost card is prepared, which is a document that contains all the costs associated with the job order, including raw materials, direct labor, and indirect expenses.
- Job Order Cost = Direct Materials + Direct Labor + Indirect Costs
Practical example:
Direct materials: 10,000 Egyptian pounds
Direct wages: 5,000 Egyptian pounds
Industrial loading (indirect costs): 3,000 EGP
👉 Total cost of the job order = 18,000 EGP
Fourth: Allocating indirect manufacturing costs
Indirect costs are allocated using a load rate, such as:
Load rate:
- Based on live working hours
- or machine operating hours
example:
if it was:
Total indirect costs = £100,000
Total working hours = 20,000 hours
👉 Load rate = 5 pounds/hour
Fifth: The role of the job order costing system in production control
This system plays a pivotal role in oversight through:
1. Track costs accurately
It helps in determining the cost of each process or product.
2. Detecting standard deviations
Actual costs can be compared to planned costs.
3. Improving efficiency
It helps reduce waste and improve resource utilization.
4. Supporting decision-making
like:
- Product Pricing
- Accept or reject applications
Sixth: The concept of standard costs
Standard costs are costs that are pre-planned based on studies and analyses, and are used as a benchmark for measuring actual performance.
Seventh: Calculating standard deviations
The standard deviation is the difference between the actual cost and the pre-estimated standard cost. It is called the standard deviation because it does not conform to the standard set by the previous one, either positively or negatively.
1. Material deviation
a) Price deviation:
= (Actual price – Standard price) × Actual quantity
b) Quantity deviation:
= (Actual quantity – Standard quantity) × Standard price
2. Wage bias
a) Wage rate deviation:
= (Actual - Standard Wage Rate) × Actual Hours
b) Efficiency deviation:
= (Actual hours – Standard hours) × Standard wage rate
3. Indirect cost variance
It is divided into:
- Spending deviation
- Efficiency deviation
- Energy diversion
Eighth: Methods for addressing standard deviations
After identifying the standard deviations, their causes should be analyzed and corrective action taken:
1. Analyzing the causes
like:
- rising material prices
- Inefficient workers
- Poor planning
2. Taking corrective action
- Negotiating with suppliers
- Worker training
- Improving production processes
3. Updating standards
In case of changes in economic or operational conditions.
Ninth: The importance of analyzing deviations
- Improving financial performance
- Strengthening internal control
- Reducing costs
- Supporting future planning
conclusion
Job order costing is a powerful cost management tool for companies that rely on production-to-order systems. It provides high accuracy in determining the cost of each order and facilitates effective production control. Standard deviation analysis is also essential for performance improvement and making strategic decisions based on accurate data.
If this system is implemented correctly, it contributes significantly to increased profitability and operational efficiency.
