Cost and Management Accounting

Financial Accounting vs. Cost Accounting:

Prime Cost vs. Conversion Cost:

• Prime Cost: The sum of all direct manufacturing costs directly traceable to the finished unit: [ \text{Prime Cost} = \text{Direct Materials} + \text{Direct Labor} + \text{Direct Expenses} ]
• Conversion Cost: The costs incurred to transform (convert) raw materials into finished goods: [ \text{Conversion Cost} = \text{Direct Labor} + \text{Factory/Manufacturing Overheads} ]

Product Costs vs. Period Costs:

• Product Costs (Inventoriable Costs): Costs necessary for manufacturing a product. Capitalized in inventory until the units are sold (Direct Material, Direct Labor, Factory Overhead).
• Period Costs: Non-manufacturing costs expensed on the Income Statement in the accounting period incurred (Selling expenses, Administrative salaries, Head office rent).

Tender / Quotation Price:

A tender or quotation price is the proposed price submitted to a prospective buyer or contract authority to supply goods or services. It is determined by estimating future production costs from past cost sheets, applying historical overhead absorption percentages, and adding the required profit margin.

Sunk Cost vs. Opportunity Cost:

• Sunk Cost: A historical cost already incurred that cannot be recovered or altered by any future managerial decision (e.g. past software development costs). Irrelevant for future decision making.
• Opportunity Cost: The potential net benefit or return foregone when choosing one alternative over the next best available alternative (e.g. rental income lost by using own warehouse for production).

Cost Sheet of Himalayan Tech Hardware Ltd

For the month ended Chaitra 2081 (Output: 5,000 units)

Verification:

Profit on Sales = $\frac{205,000}{1,025,000} \times 100\% = 20.0\%$. Selling price per unit is NPR 205.00.

Comprehensive Classification of Costs:

1. By Element:

   • Materials: Raw substances used in manufacturing (Direct vs Indirect).
   • Labor: Remuneration for human effort (Direct machine operators vs Indirect janitors).
   • Expenses: Other expenditures (Factory rent, patents, software licenses).

2. By Function:

   • Production / Manufacturing Cost: Incurred inside the factory gate.
   • Administration Cost: Formulating policies and managing corporate functions.
   • Selling & Distribution Cost: Stimulating consumer demand and order logistics.
   • Research & Development (R&D) Cost: Developing new products/services.

3. By Behavior (Variability):

   • Fixed Costs: Total amount remains constant across production volume (e.g. factory lease).
   • Variable Costs: Total cost varies in direct linear proportion to volume (e.g. raw materials).
   • Semi-Variable (Mixed) Costs: Contains both fixed baseline and variable components (e.g. electricity bills with monthly demand charge + per-unit rate).

4. For Managerial Decision Making:

   • Relevant Costs: Future costs differing across decision alternatives.
   • Differential / Incremental Costs: The difference in cost between two alternatives.
   • Sunk Costs: Past non-recoverable costs (irrelevant).
   • Opportunity Costs: Foregone return from the best alternative.

Tender Price Estimation & Quotation:

Step 1: Compute Historical Absorption Percentages (Year 2080):

• Prime Cost: $400,000 + 200,000 = \text{NPR } 600,000$.
• Factory Overhead Rate (% of Direct Wages): [ \text{Factory OH Rate} = \frac{\text{Factory OH}}{\text{Direct Wages}} \times 100% = \frac{100,000}{200,000} \times 100% = 50% ]
• Works Cost (Year 2080): $600,000 + 100,000 = \text{NPR } 700,000$.
• Administrative Overhead Rate (% of Works Cost): [ \text{Admin OH Rate} = \frac{\text{Admin OH}}{\text{Works Cost}} \times 100% = \frac{70,000}{700,000} \times 100% = 10% ]

---

Step 2: Prepare Statement of Tender Price (2,000 units):

• Quotation Price per Unit: $\frac{229,062.50}{2,000} = \text{NPR } 114.53$.

High-Low Method Cost Separation:

The High-Low Method compares total cost at the highest and lowest historical activity levels to isolate the variable cost slope:

(a) Variable Cost per Machine Hour ($b$):

[ b = \frac{\text{Cost at High Level} - \text{Cost at Low Level}}{\text{Activity at High Level} - \text{Activity at Low Level}} = \frac{48,000 - 34,000}{12,000 - 7,000} = \frac{14,000}{5,000} = \text{NPR } 2.80\text{ / hour} ]

---

(b) Total Fixed Electricity Cost ($a$):

Using the high activity level: [ \text{Total Cost} = a + (b \times \text{Hours}) ] [ 48,000 = a + (2.80 \times 12,000) \implies 48,000 = a + 33,600 ] [ a = 48,000 - 33,600 = \text{NPR } 14,400 ] (Check with low level: $34,000 - (2.80 \times 7,000) = 34,000 - 19,600 = 14,400$. Verified!)

---

(c) Estimated Cost for 10,000 Machine Hours:

[ TC = a + b(Q) = 14,400 + (2.80 \times 10,000) = 14,400 + 28,000 = \text{NPR } 42,400 ]

Nature, Objectives & Limitations of Cost Sheet:

A Cost Sheet is a structured periodic accounting statement presenting the detailed components of total cost incurred in producing and distributing a product or service.

Primary Objectives:

1. Determines Total & Per-Unit Cost: Segregates costs into Prime Cost, Works Cost, Cost of Production, and Cost of Sales.
2. Facilitates Product Pricing & Tenders: Provides cost benchmarks to establish competitive bid quotes.
3. Identifies Cost Control Targets: Enables variance comparison against historical periods and standard benchmarks.

Limitations:

1. Relies on Historical Data: Past costs may not accurately reflect future market inflation or supply chain disruptions.
2. Arbitrary Overhead Apportionment: Conventional percentage absorption methods can distort unit costs across diverse product lines.
3. Omits Non-Financial Metrics: Fails to capture quality defects, customer delivery cycles, or employee morale.

Allocation vs. Apportionment vs. Absorption:

Comprehensive Cost Sheet & Income Statement:

Company: Sagarmatha IT Appliances Ltd | Period: Year ended Ashadh 2081 Units Produced: 10,000 units | Units Sold: 9,000 units | Closing Inventory: 3,000 units

---

Step (b): Unit Production Cost & Closing Stock Valuation (FIFO):

[ \text{Current Cost of Production per Unit} = \frac{\text{Cost of Production}}{\text{Units Produced}} = \frac{1,370,000}{10,000} = \text{NPR } 137.00 ] Under FIFO, the 3,000 units in closing inventory are valued at current production cost: [ \text{Valuation of Closing Stock} = 3,000 \text{ units} \times \text{NPR } 137.00 = \text{NPR } 411,000 ]

---

Cost Sheet Continuation:

• Net Profit Earned: NPR 571,000.

Activity-Based Costing (ABC) vs. Traditional Costing:

Activity-Based Costing is a refined costing methodology that assigns overhead costs to activities based on resource consumption, and then allocates activity costs to cost objects (products, services, customers) according to their demand for those activities.

---

Comparison: ABC vs. Traditional Costing

---

The Problem of Cross-Subsidization:

Under traditional costing:

• High-volume, simple products consume high machine hours and are allocated disproportionately heavy overheads (Over-costed).
• Low-volume, complex, specialized products require frequent machine setups and inspections but consume few machine hours, receiving too little overhead (Under-costed).
• Result: High-volume products subsidize complex niche items, leading to erroneous pricing, uncompetitive quotes, and margin erosion.

---

5-Stage Implementation Methodology of ABC:

1. Identify Activities & Resource Costs
   └── (e.g. Machine setup, Material handling, Quality inspection)
         │
2. Assign Resource Costs to Activity Cost Pools
   └── (e.g. Total Setup Cost = NPR 600,000)
         │
3. Identify Meaningful Cost Drivers for Each Pool
   └── (e.g. Driver: Number of Production Setups)
         │
4. Compute Activity Cost Driver Rates
   └── Activity Rate = Total Pool Cost / Total Driver Quantity
         │
5. Assign Costs to Products Based on Driver Usage
   └── Assigned Cost = Product Driver Demand × Activity Rate

By linking support costs directly to activity consumption, ABC empowers managers to eliminate non-value-added activities and optimize product mix.