Cost Accounting (Grade 11 NSC Matric Accounting): Revision Notes
Costs of production
Introduction to production costs
When a business manufactures products, it needs to carefully track and understand all the costs involved in making those products. Production costs help businesses determine how much to charge for their products, calculate profit margins, and make important decisions about their operations. In cost accounting, we classify these costs into different categories based on their nature and purpose.
Manufacturing businesses need to distinguish between costs directly related to making products (manufacturing costs) and other business expenses (non-manufacturing costs). Understanding this distinction is essential for calculating the true cost of producing each item and managing the business effectively.
Manufacturing costs can be further divided into subcategories: direct/prime costs and factory overheads. This classification helps businesses accurately track where money is being spent in the production process.
Manufacturing costs
Manufacturing costs (also called production costs) are all expenses directly related to producing goods in a factory. These costs are divided into two main categories: direct/prime costs and factory overheads.
Direct costs (prime costs)
Direct costs are expenses that can be clearly traced to the finished product. These are called "prime costs" because they are the primary costs of manufacturing. Prime costs consist of two main components: direct materials and direct labour.
Raw materials/Direct materials
These are the materials that become part of the final product. They are called "direct" because you can physically see them in the finished item. These materials can be either processed (already manufactured items) or unprocessed (raw materials in their natural state).
Worked Example: Identifying Direct Materials
If you manufacture umbrellas, the direct materials include:
- Fabric for the canopy
- Metal frame and ribs
- Handle (plastic or wooden)
For furniture manufacturing:
- Wood planks and boards
- Varnish or paint
- Hardware (hinges, handles)
Key Characteristics of Direct Materials:
- They are clearly visible in the final product
- They can be easily traced to specific products
- The cost is significant enough to track individually
- Examples include: wood for furniture, fabric for clothing, leather for shoes, metal for car parts
Direct labour
Direct labour refers to the wages and salaries paid to workers who physically make the product. These are employees who "touch" the product during the manufacturing process or are directly "working" on it. For instance, if you manufacture furniture, the carpenter who cuts and assembles the wood is providing direct labour.
When calculating direct labour costs, you must include:
- Basic wages or salaries earned by production workers
- Employer contributions to pension funds
- Unemployment Insurance Fund (UIF) contributions
- Medical aid contributions paid by the employer
Direct labour includes all costs the company pays for these workers, not just their take-home pay. This gives a true picture of what each worker costs the business.
Factory overheads
Factory overheads are all the indirect costs of running a factory. These are expenses necessary for production but cannot be easily traced to individual products. Overheads are sometimes called "indirect costs" because they support production without being directly visible in the final product.
Indirect materials/Consumables
These are materials used in the production process but are relatively minor or insignificant compared to direct materials. They might be too small to track individually or don't form a substantial part of the product.
Examples of indirect materials include:
- Cleaning supplies used to maintain machinery
- Oil and lubricants for factory equipment
- Small tools and equipment
- Packaging materials
- Glue, nails, or screws (when the amounts are small)
Indirect labour
Indirect labour includes the wages and salaries of factory employees who support production but don't directly work on the products themselves. These workers are essential for keeping the factory running smoothly.
Examples of indirect labour include:
- Factory manager's salary
- Factory supervisor's wages
- Security guards who protect the factory
- Workers who handle and move raw materials
- Maintenance staff who repair machinery
- Quality control inspectors
Just like direct labour, indirect labour costs must include employer contributions for pension funds, UIF, and medical aid. This ensures the full cost of employing these workers is captured.
Depreciation
This refers to the wear and tear on factory equipment, machinery, and vehicles used exclusively in the factory. Depreciation is only recorded for assets used in production, not office equipment or delivery vehicles.
Worked Example: Factory Depreciation
If you have a cutting machine used to manufacture products, you would record depreciation on that machine as a factory overhead. However, the office photocopier's depreciation would be classified as an administrative cost.
Maintenance and repairs
These are costs associated with keeping factory equipment, machinery, and vehicles in good working condition. Regular maintenance prevents breakdowns and extends the life of factory assets. This includes:
- Routine servicing of machinery
- Repairs to broken equipment
- Replacement of worn parts
- Maintenance contracts for factory equipment
Only maintenance costs for factory equipment are included here; office equipment maintenance goes under administrative costs.
Insurance
This covers insurance premiums paid to protect the factory building, machinery, equipment, and vehicles used in production. Insurance protects the business against risks like fire, theft, or damage to factory assets.
Rent
If the business rents the factory building or equipment, this cost is included in factory overheads. Rent must be allocated based on usage – only the portion related to factory space is treated as a factory overhead. Office rent is classified separately under administrative costs.
Water and electricity
Utilities used in the factory are overhead costs. This includes electricity to run machinery, lighting in the factory, and water used in production processes.
If the business has a single utility bill for both factory and office, it must be allocated proportionally (for example, 85% factory and 15% office based on floor space or usage).
Other factory costs
Any other costs directly related to running the factory or using factory equipment and machinery are classified as factory overheads. This is a catch-all category for legitimate production costs that don't fit neatly into other categories.
Understanding cost behaviour
Costs behave differently depending on production levels. Some costs increase when production increases (variable costs), while others remain constant regardless of production (fixed costs). Understanding this distinction helps businesses plan production levels and calculate break-even points.
Variable costs
Variable costs change in direct proportion to the level of production. When you produce more units, variable costs increase; when you produce fewer units, variable costs decrease. These costs are directly related to how much you manufacture.
Common examples of variable costs include:
- Raw materials/Direct materials: If you make 100 chairs, you need material for 100 chairs. If you make 200 chairs, you need double the material.
- Direct labour: More production often means more hours worked by production staff (though salaries may have fixed components).
- Selling and distribution costs: Costs like sales commissions and packaging increase with the number of units sold.
Worked Example: Calculating Variable Costs
A furniture manufacturer uses worth of wood per chair.
For 100 chairs: Variable material cost =
For 200 chairs: Variable material cost =
Notice how the total cost doubles when production doubles – this is the defining characteristic of variable costs.
Understanding variable costs is crucial because they help businesses calculate the marginal cost (additional cost of producing one more unit) and determine pricing strategies.
Fixed costs
Fixed costs remain constant regardless of production levels. The business must pay these costs even if it produces nothing. Fixed costs provide the capacity to produce but don't change based on actual production volume.
Common examples of fixed costs include:
- Factory overheads: Most factory overheads like rent, insurance, and supervisors' salaries must be paid whether the factory produces 100 units or 10,000 units.
- Administration costs: Office expenses continue regardless of factory production levels.
Fixed costs are important for break-even analysis. Since these costs must be covered before the business makes a profit, managers need to know how many units they must sell to cover all fixed costs.
Non-manufacturing costs
Not all business costs are related to manufacturing products. Non-manufacturing costs are necessary to run the business but are not directly involved in production. These costs are typically divided into administrative costs and selling and distribution costs.
Administrative costs
Administrative costs are all expenses related to running the office and managing the business. These costs support the overall operation but are not directly tied to manufacturing or selling products. The office provides essential services like accounting, human resources, and general management.
Examples of administrative costs include:
- Rent and insurance: For office buildings and equipment (not factory)
- Depreciation on office equipment: Computers, furniture, photocopiers, and other office assets
- Water and electricity: Used in the office space
- Salaries and wages: Office staff like receptionists, accountants, bookkeepers, and office cleaners (including employer contributions for UIF, pension fund, and medical aid)
- Maintenance: Repairs to office buildings and equipment
- Telephone costs: Communication expenses for the office
- Stationery and office supplies: Paper, pens, and other consumables used in the office
Administrative costs are necessary overheads that support the entire business operation. They must be controlled carefully because they don't directly generate revenue.
Selling and distribution costs (marketing costs)
These are all costs related to selling products and getting them to customers. Every business needs to market its products and handle sales activities. These costs are incurred after production is complete.
Examples of selling and distribution costs include:
- Commission paid to agents: Sales staff often earn a percentage of sales as commission
- Depreciation: On shop equipment and vehicles used by sales agents for deliveries
- Rent and insurance: For shop premises and shop equipment
- Telephone bills: For sales agents and shop communications
- Water and electricity: Used in shop premises
- Bad debts: When customers fail to pay for goods purchased on credit, this is a selling expense
Selling and distribution costs are essential for generating revenue but must be managed carefully to ensure profitability. Excessive marketing expenses can reduce profit margins even when sales are strong.
Practical application: allocating costs
In real businesses, some costs need to be allocated between different categories. Understanding how to properly allocate shared costs is essential for accurate cost accounting.
Worked Example: Rent Allocation
A business rents a building with both factory and office space. The factory occupies 1,400 m² and the office occupies 400 m².
Step 1: Calculate total floor space Total space = m²
Step 2: Calculate allocation percentages
Step 3: Apply to total rent If total monthly rent is :
- Factory rent (overhead):
- Office rent (administrative):
Worked Example: Utility Allocation
Water and electricity bills may need to be split based on usage patterns or floor space. A business might determine that 85% of utilities are used in the factory and 15% in the office.
If the monthly utility bill is :
- Factory utilities (overhead):
- Office utilities (administrative):
Labour with Multiple Roles
Some employees might work partially in production and partially in supervision. Their costs would be split accordingly between direct labour and indirect labour based on time spent in each role.
Exam tips
When answering questions about costs of production, keep these important points in mind:
Essential Exam Strategies:
- Read carefully: Identify whether a cost is related to the factory, office, or sales activities
- Remember UIF and pension contributions: Always include employer contributions when calculating labour costs
- Watch for allocation: Some costs (like rent or utilities) may need to be split between factory and office
- Distinguish direct from indirect: Direct costs can be traced to the product; indirect costs cannot
- Variable vs Fixed: Ask yourself "Does this cost change if we produce more units?"
- Show your workings: In exams, demonstrate how you classified and calculated each cost
- Use the correct terminology: Don't confuse factory overheads with administrative costs
Summary
Key Points to Remember:
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Direct/Prime costs consist of raw materials and direct labour – these are costs you can directly trace to the finished product and are essential for manufacturing.
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Factory overheads are all the indirect costs of running a factory (supervisors, rent, utilities, maintenance, insurance) that support production but can't be traced to individual products.
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Variable costs change with production levels (more production = higher costs), while fixed costs remain constant regardless of how much you produce.
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Non-manufacturing costs include administrative costs (running the office) and selling/distribution costs (marketing and getting products to customers) – these are essential business expenses but aren't part of production costs.
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Always include employer contributions (UIF, pension fund, medical aid) when calculating labour costs, whether direct or indirect, to capture the true cost of employing workers.