Cost Accounting Systems & Financial Statements

TAKEAWAYS:

• Learn how job order costing tracks costs per project (e.g., a hotel’s room renovation) vs. process costing for mass production (e.g., Daraz’s uniform T-shirts).
• Understand standard costing (budgeted vs. actual costs) and how hotels like Gyan Bhavan use it to control food costs.
• Master cost of goods manufactured (COGM) and cost of goods sold (COGS) calculations with a worked example for a Kathmandu bakery.
• Compare financial vs. management accounting statements (income statement, balance sheet, cash flow) and their roles.
• See how Nepal’s NEPSE uses cost accounting for stock valuation in its listed companies.
• Apply cost-volume-profit (CVP) analysis to break-even points in real scenarios (e.g., Pathao’s surge pricing).

1. Introduction to Cost Accounting Systems

Cost accounting systems classify, record, and allocate costs to products, services, or departments. Unlike financial accounting (which focuses on external reporting), cost accounting supports internal decision-making (e.g., pricing, budgeting, performance evaluation).

Key Systems:

2. Job Order Costing

Definition: A system where costs are accumulated for specific jobs or batches (e.g., a hotel’s room renovation, a wedding cake).

How It Works:

1. Materials are issued to the job (e.g., Rs 1,000 for wood, paint).
2. Labor is tracked per job (e.g., Rs 800 for carpenters).
3. Overhead (e.g., machinery depreciation) is allocated based on a predetermined rate.
4. Cost per job = Materials + Labor + Allocated Overhead.

Worked Example: Kathmandu Hotel’s Room Renovation

Given:

• Materials: Rs 1,200
• Labor: Rs 1,500 (4 workers × 5 hours × Rs 75/hour)
• Overhead rate: 150% of labor cost
• Job: Room 201 renovation

Calculation:

Cost per job = Materials + Labor + (Overhead Rate × Labor)
              = 1,200 + 1,500 + (1.5 × 1,500)
              = 1,200 + 1,500 + 2,250
              = **Rs 4,950**

Final Cost: Rs 4,950 per room renovation.

Materials Control
  Dr.       Cr.
  1,200     (Issued to Job 201)
Labor Control
  Dr.       Cr.
  1,500     (Paid to workers)
Overhead Control
  Dr.       Cr.
  2,250     (Allocated to Job 201)
Job 201 Control
  Dr.       Cr.
  4,950     (Total Cost)

3. Process Costing

Definition: Used for continuous production where units are identical (e.g., Daraz’s T-shirts, NTC’s SIM cards).

Key Steps:

1. Track costs per department (e.g., Cutting, Sewing, Packaging).
2. Calculate equivalent units (e.g., 50% complete units).
3. Compute cost per unit = Total Department Cost / Equivalent Units.

Worked Example: Daraz’s T-Shirt Production

Given:

• Department: Sewing
• Units started: 1,000
• Units completed: 800
• Units in ending inventory (50% complete): 200
• Total Sewing Cost: Rs 12,000

Calculation:

Equivalent Units = Completed (800) + (200 × 50%)
                 = 800 + 100
                 = **900 units**
Cost per unit = Total Cost / Equivalent Units
              = 12,000 / 900
              = **Rs 13.33 per unit**

Final Cost: Rs 13.33 per T-shirt (before overhead).

flowchart TD
    A["Start: 1,000 Units"] --> B["Track Costs per Dept."]
    B --> C["Calculate Equivalent Units"]
    C --> D["Cost per Unit = Total Cost / Equivalent Units"]
    D --> E["Assign to Inventory"]

4. Standard Costing

Definition: Predefined "standard" costs for materials, labor, and overhead, compared with actual costs to identify variances.

Why Use It?

• Budget control (e.g., Gyan Bhavan’s menu costs).
• Performance evaluation (e.g., NTC’s call-center efficiency).

Worked Example: Gyan Bhavan’s Dal Bhat Cost

Standard Costs (per plate):

• Rice: Rs 10 (standard 200g)
• Dal: Rs 8 (standard 150g)
• Labor: Rs 5 (standard 5 minutes)
• Overhead: Rs 3 (standard)

Total Standard Cost: Rs 26 per plate.

Actual Costs (for 100 plates):

• Rice: Rs 2,100 (used 220g/plate)
• Dal: Rs 850 (used 160g/plate)
• Labor: Rs 520 (took 6 minutes/plate)
• Overhead: Rs 300

Variances:

Rice Variance = (220g - 200g) × Rs 0.05/g = **Rs +10** (unfavorable)
Dal Variance = (160g - 150g) × Rs 0.05/g = **Rs +5** (unfavorable)
Labor Variance = (6 - 5) × Rs 5 = **Rs +5** (unfavorable)

Total Variance: Rs 20 unfavorable (actual cost = Rs 28 per plate).

5. Cost of Goods Manufactured (COGM) & Cost of Goods Sold (COGS)

COGM Formula:

COGM = Beginning WIP + Direct Materials + Direct Labor + Manufacturing Overhead - Ending WIP

COGS Formula:

COGS = Beginning Finished Goods + COGM - Ending Finished Goods

Worked Example: Kathmandu Bakery

Given (for January):

• Beginning WIP: Rs 5,000
• Materials Used: Rs 12,000
• Labor: Rs 8,000
• Overhead: Rs 6,000
• Ending WIP: Rs 3,000
• Beginning Finished Goods: Rs 10,000
• Ending Finished Goods: Rs 8,000

Calculations:

COGM = 5,000 + 12,000 + 8,000 + 6,000 - 3,000 = **Rs 38,000**
COGS = 10,000 + 38,000 - 8,000 = **Rs 40,000**

Income Statement Impact:

Sales Revenue: Rs 50,000
COGS: Rs 40,000
Gross Profit: Rs 10,000

flowchart TD
    A["Beginning WIP"] --> B["+ Materials + Labor + Overhead"]
    B --> C["- Ending WIP = COGM"]
    C --> D["+ Beginning FG - Ending FG = COGS"]
    D --> E["Gross Profit = Sales - COGS"]

6. Financial vs. Management Accounting Statements

7. In the Real World

1. NEPSE (Nepal Stock Exchange):

   • Uses cost accounting to value stocks in its listed companies (e.g., Ncell, NTC).
   • Example: When Ncell reports earnings, cost accounting ensures inventory (SIM cards) is valued correctly.

2. Pathao’s Surge Pricing:

   • Uses cost-volume-profit (CVP) analysis to adjust prices during peak hours (e.g., Rs 500 vs. Rs 300 at night).
   • Math: If cost per ride is Rs 200 and variable cost is Rs 100, break-even price = Rs 200 + (Fixed Cost / Volume).

3. Gyan Bhavan’s Menu Costing:

   • Tracks standard costs for dal bhat (as shown above) to ensure profitability.
   • Real Impact: If actual dal cost exceeds Rs 8, they adjust supplier contracts.

Break-even Price = Fixed Cost + (Variable Cost × Volume)
                 = Rs 1,000 + (Rs 100 × 10 rides)
                 = **Rs 2,000 total revenue needed**

(If Pathao charges Rs 200/ride, they break even at 10 rides/day.)

8. Exam Tip

• Focus on calculations: COGM, COGS, standard cost variances, and break-even analysis are high-weightage topics.
• Compare systems: Always explain why a business would choose job order vs. process costing (e.g., hotels vs. Daraz).
• Real-world links: Connect examples to Nepal (e.g., NEPSE, Pathao) to stand out.
• Show work: For numericals, label every step (e.g., "Step 1: Calculate COGM").
• Common mistakes:
  • Forgetting to subtract ending WIP in COGM.
  • Mixing up fixed vs. variable costs in CVP analysis.
  • Not reconciling debits = credits in T-accounts.

Past Exam Question Practice: Q: A hotel has a cost per room of Rs 500 and charges 100% markup. Calculate the room rate. Solution:

Room Rate = Cost + (Markup × Cost)
          = 500 + (1 × 500)
          = **Rs 1,000 per night**

(This matches Pathao’s premium pricing strategy!)