Job Order Costing & Process Costing: Methods, Examples & Reconciliation

TAKEAWAYS:

• Job Order Costing assigns costs to specific batches/jobs (e.g., custom furniture, movie production) using job cards, while Process Costing spreads costs evenly across identical units (e.g., cement, textiles) via process accounts.
• Normal losses (expected waste) are deducted from production, but abnormal losses hit profit/loss; abnormal gains boost profit.
• Equivalent Units = (Units completed + Ending WIP × % completion) to allocate costs fairly in Process Costing.
• Reconciliation adjusts cost accounts to match financial accounts by adding back non-manufacturing costs (e.g., sales commission) and removing capital expenditures.
• Real-world tie: Daraz’s order fulfillment uses Job Order Costing per customer order, while NTC’s cable production uses Process Costing for uniform output.
• Exam trap: Always check if a question asks for cost per unit (Process) or total cost per job (Job Order)—mix them up and lose marks!

1. Job Order Costing: Tracking Costs for Unique Products

Job Order Costing is used when products are custom-made or produced in small batches. Each "job" (e.g., a wedding cake, a printed circuit board) has its own cost record.

How It Works

1. Cost Accumulation:

   • Direct Materials: Raw materials used for the job (e.g., wood for a table).
   • Direct Labor: Wages of workers directly involved (e.g., carpenter’s time).
   • Manufacturing Overhead: Indirect costs (e.g., factory rent, machine depreciation) allocated using a predetermined overhead rate.

     Overhead Rate = (Estimated Overhead / Estimated Activity Base)
     

     Example: If estimated overhead is Rs 120,000 and machine hours are 10,000, the rate is Rs 12/hour.

2. Job Cost Sheet: A T-account tracks costs per job. For Kathmandu Woodcrafts Ltd. (a custom furniture maker), the job cost sheet for Job #101 (Oak Dining Table) might look like this:

   Job #101: Oak Dining Table	Dr (Rs)	Cr (Rs)
   Direct Materials (Wood, Polish)	45,000
   Direct Labor (Carpenter, 20 hrs)	30,000
   Manufacturing Overhead (15 hrs × Rs 12)	18,000
   Total Cost	93,000

3. Worked Example: Movie Production Suppose Kathmandu Films produces a short film with:

   • Direct Materials: Rs 500,000 (props, costumes)
   • Direct Labor: Rs 800,000 (actors, crew)
   • Overhead: Rs 300,000 (studio rent, equipment)
   • Activity Base: 1,000 labor hours
   • Overhead Rate: Rs 300/hour Total Cost per Film:

   500,000 + 800,000 + (1,000 × 300) = **Rs 1,600,000**
   

Advantages & Disadvantages

2. Process Costing: Costing Mass Production

Process Costing is used for identical units produced in a continuous flow (e.g., cement, textiles, oil refining). Costs are averaged across all units.

Key Terms

• Process Account: A ledger for each production stage (e.g., Mixing, Baking, Packaging).
• Normal Loss: Expected waste (e.g., 5% of flour lost in baking).
• Abnormal Loss: Unexpected waste (e.g., machine breakdown).
• Equivalent Units: Adjusts for partially completed units in Work-in-Progress (WIP).

How It Works: Step-by-Step

1. Summarize Costs per Process: For Himalayan Biscuit Factory (Process: Mixing → Baking → Packaging), the Mixing Process data is:

   Particulars	Rs
   Opening WIP (50% complete)	20,000
   Raw Materials Added	150,000
   Direct Labor	80,000
   Manufacturing Overhead	50,000
   Total Cost	200,000

2. Calculate Equivalent Units:

   • Units Completed: 10,000
   • Ending WIP: 2,000 (30% complete)

   Equivalent Units = 10,000 + (2,000 × 0.30) = **10,600**
   

3. Allocate Costs:

   Cost per EU = Total Cost / Equivalent Units = 200,000 / 10,600 ≈ **Rs 18.87**
   

   • Cost of Completed Units: 10,000 × Rs 18.87 = Rs 188,700
   • Cost in Ending WIP: 2,000 × (0.30 × Rs 18.87) = Rs 11,322

4. Handle Losses:

   • Normal Loss: 5% of input (500 units) → Scrap value: Rs 8/unit → Rs 4,000 credited to the process.
   • Abnormal Loss: 100 units → Rs 1,887 (100 × Rs 18.87) debited to Profit & Loss.

Process Costing Flowchart

flowchart TD
    A["Raw Materials\n+ Labor\n+ Overhead"] --> B["Process 1\n(Mixing)"]
    B --> C["Units Completed\nto Process 2"]
    B --> D["Normal Loss\n(5%)"]
    B --> E["Abnormal Loss\n(Reported)"]
    C --> F["Process 2\n(Baking)"]
    F --> G["Finished Goods\nInventory"]
    F --> H["Ending WIP\n(30% complete)"]

Worked Example: Cement Production

Nepal Cement Ltd. produces cement in three processes:

1. Crushing (Input: 10,000 units)
2. Grinding (Output: 9,500 units, 5% normal loss)
3. Packaging (Output: 9,300 units, 2% normal loss)

Crushing Process Data:

• Costs: Rs 450,000
• Units Completed: 9,500
• Ending WIP: 500 (60% complete)

Equivalent Units = 9,500 + (500 × 0.60) = 9,800
Cost per EU = 450,000 / 9,800 ≈ **Rs 45.92**

Cost Transferred to Grinding:

9,500 × Rs 45.92 = **Rs 436,240**

3. Reconciling Cost and Financial Accounts

Cost accounts and financial accounts must match. Discrepancies arise due to:

• Non-manufacturing costs (e.g., sales commission) recorded in financial but not cost accounts.
• Capital expenditures (e.g., machinery purchase) recorded in financial but not yet in cost accounts.

Reconciliation Statement Example

Final Reconciliation:

Financial Net Loss: Rs 30,000
Cost Net Loss: Rs 30,000 - Rs 15,000 = **Rs 15,000**

4. Job Order vs. Process Costing: Key Differences

## In the Real World

1. Daraz (Nepal’s Amazon):

   • Uses Job Order Costing for each customer order.
   • Costs like packaging, shipping, and handling fees are tracked per order (job) to calculate delivery charges.

2. NTC (Nepal Telecommunications Corporation):

   • Uses Process Costing for cable production.
   • Costs (copper, insulation, labor) are averaged across thousands of meters of cable to set per-unit prices.

3. Khalti (Digital Payment App):

   • Transaction Processing acts like Process Costing:
     • Each transaction (e.g., Rs 500 transfer) incurs fixed costs (server fees, security) and variable costs (per-transaction charges).
     • Costs are allocated uniformly across all transactions (like Process Costing).

4. Nepal Rastra Bank (NRB) Loan Processing:

   • Loan Sanctioning is a Job Order Costing scenario:
     • Each loan application (job) incurs processing fees, staff time, and verification costs, tracked separately to determine profitability per loan.

## Exam Tip: How to Score Full Marks

1. Always Show Workings:

   • For Process Costing, break down equivalent units step-by-step. Examiners deduct marks for missing intermediate steps.

2. Label Clearly:

   • Use Dr/Cr columns in tables and label all processes (e.g., "Mixing Process Account").

3. Watch for Keywords:

   • "Normal loss" → Deduct from production.
   • "Abnormal loss" → Debit to P&L.
   • "Equivalent units" → Required for Process Costing.

4. Reconciliation is Critical:

   • If asked to reconcile cost and financial accounts, list all adjustments (e.g., add back sales commission, deduct depreciation).

5. Real-World Application:

   • 2-3 marks are often given for tying theory to practice. Example:

     "Explain how Nepal Cement Ltd. would use Process Costing to price its cement bags." Answer: "Nepal Cement Ltd. would allocate costs (raw materials, labor, overhead) across all units produced in each process (crushing, grinding, packaging). Equivalent units would be calculated to determine the cost per bag, ensuring uniform pricing."

## Practice Questions (Exam-Style)

1. Job Order Costing: A custom furniture maker, Lumbini Woodcrafts, has the following data for Job #201 (a mahogany table):

   • Direct Materials: Rs 60,000
   • Direct Labor: Rs 40,000 (200 hours)
   • Overhead Rate: Rs 50/hour Prepare the Job Cost Sheet and calculate the total cost.

2. Process Costing: Everest Textiles produces fabric in two processes:

   • Weaving: Input = 20,000 units, Output = 18,000 (10% normal loss), Ending WIP = 1,000 (40% complete).
   • Costs in Weaving: Rs 360,000 Calculate: a) Equivalent units in Weaving. b) Cost per equivalent unit. c) Cost transferred to the next process.

3. Reconciliation: A company’s financial accounts show a net loss of Rs 40,000, but its cost accounts show a net loss of Rs 25,000. The following discrepancies exist:

   • Income tax paid (Rs 10,000) recorded only in financial accounts.
   • Administrative expenses (Rs 5,000) recorded in cost accounts but not financial. Prepare a reconciliation statement.

## Visual Summary

mindmap
  root((Job Order vs. Process Costing))
    Job Order
      "Custom Products\n(e.g., Movies, Ships)"
      "Costs per Job\n(Job Cost Sheet)"
      "Overhead Allocated\nto Specific Jobs"
    Process
      "Mass Production\n(e.g., Cement, Toothpaste)"
      "Costs per Process\n(Equivalent Units)"
      "Normal/Abnormal Losses"
    Reconciliation
      "Adjust Non-Manufacturing Costs"
      "Match Financial & Cost Accounts"
    Real-World
      "Daraz: Job Order\nper Delivery"
      "NTC: Process Costing\nfor Cables"