Standard Costing & Variance Analysis: Standards, Variances, Control

Core Concepts: What is Standard Costing?

1. Definition and Purpose

Standard costing is a cost accounting technique where predetermined (standard) costs are set for materials, labor, and overheads. These standards are compared against actual costs to identify variances—differences that signal inefficiencies or opportunities.

Why use standard costing?

• Provides a benchmark for performance.
• Helps control costs by highlighting deviations.
• Simplifies inventory valuation (standards replace actual costs).
• Supports budgeting and decision-making.

graph TD
    A["Standard Costing System"] --> B["Set Standards"]
    A --> C["Record Actual Costs"]
    A --> D["Compare & Calculate Variances"]
    A --> E["Analyze & Take Corrective Action"]
    B --> B1["Material: Quantity & Price"]
    B --> B2["Labor: Hours & Rate"]
    B --> B3["Overhead: Fixed & Variable"]

2. Setting Standard Costs

Standards are not arbitrary—they are based on engineering studies, historical data, and industry benchmarks.

Types of Standards

How to set standards?

1. Material Standards:
   • Quantity: Based on engineering specs (e.g., 2 kg of rice per kg of paratha).
   • Price: Market price + freight + handling (e.g., Rs. 120/kg for basmati rice in Kathmandu).
2. Labor Standards:
   • Time: Time-and-motion studies (e.g., 0.5 hours per pair of sandals).
   • Rate: Average wage + benefits (e.g., Rs. 400/hour for a skilled tailor).
3. Overhead Standards:
   • Fixed: Depreciation, rent, salaries (e.g., Rs. 50,000/month for a shop’s electricity).
   • Variable: Indirect materials, power (e.g., Rs. 20 per machine hour).

3. Variance Analysis: The Heart of Control

Variances are the difference between standard and actual costs. They help managers identify problems early.

Key Variances

4. Worked Example: Kathmandu Biscuit Factory

Scenario: A biscuit factory in Kathmandu produces 10,000 packets/day. Standards are:

• Material (Flour): 2 kg per packet @ Rs. 60/kg.
• Labor: 0.1 hours per packet @ Rs. 500/hour.
• Overhead: Rs. 10,000 fixed + Rs. 5 per packet variable.

Actual Data (for 10,000 packets):

• Flour used: 22,000 kg @ Rs. 65/kg.
• Labor hours: 1,200 hours @ Rs. 550/hour.
• Actual overhead: Rs. 15,000.

Step 1: Calculate Standard Costs

Step 2: Calculate Actual Costs

Step 3: Compute Variances

1. Material Price Variance: (Rs. 65 - Rs. 60) × 22,000 kg = Rs. 110,000 (U) (Higher price than standard)
2. Material Quantity Variance: (22,000 kg - 20,000 kg) × Rs. 60 = Rs. 120,000 (U) (Used more flour than expected)
3. Labor Rate Variance: (Rs. 550 - Rs. 500) × 1,200 h = Rs. 60,000 (U) (Paid higher wages)
4. Labor Efficiency Variance: (1,200 h - 1,000 h) × Rs. 500 = Rs. 100,000 (U) (Took more time than standard)
5. Overhead Variance: Rs. 15,000 - (Rs. 10,000 + Rs. 50,000) = Rs. -5,000 (F) (Saved Rs. 5,000)

Total Variance: Rs. 2,105,000 (Actual) - Rs. 1,750,000 (Standard) = Rs. 355,000 (U)

5. Corrective Actions for Unfavorable Variances

6. Advantages and Limitations of Standard Costing

Advantages

✅ Cost Control: Early detection of inefficiencies. ✅ Simplifies Accounting: Uses standards instead of actual costs for inventory. ✅ Performance Evaluation: Helps compare actual vs. expected performance. ✅ Decision-Making: Supports pricing, budgeting, and profit planning.

Limitations

❌ Rigid Standards: May not adapt to changing conditions. ❌ Time-Consuming: Requires constant updates. ❌ Subjective: Standards may be set unrealistically. ❌ Ignores Non-Financial Factors: Focuses only on cost, not quality or customer satisfaction.

In the Real World

1. eSewa (Nepal):

   • Uses standard costing to manage transaction fees.
   • Variance analysis helps track deviations in payment processing costs (e.g., if actual IT costs exceed budget due to cybersecurity upgrades).

2. Khalti (Nepal):

   • Applies labor efficiency variance to monitor call center agents’ call handling times.
   • If agents take longer than standard (e.g., 3 mins vs. 2 mins per call), Khalti investigates training needs.

3. Daraz (Nepal/Global):

   • Uses material quantity variance to track packaging waste.
   • If actual cardboard usage exceeds standards (e.g., 10% more), Daraz renegotiates with suppliers or optimizes packaging design.

4. NTC (Nepal Telecom):

   • Overhead variance analysis helps control energy costs in data centers.
   • If actual electricity bills exceed budget (e.g., due to server inefficiency), NTC upgrades to energy-efficient hardware.

5. Nepal Rastra Bank (NRB):

   • Uses standard costing for printing currency to detect counterfeit risks.
   • If actual ink costs rise due to inflation, NRB adjusts security features in new notes.

sequenceDiagram
    participant User
    participant eSewa
    participant Bank
    participant Merchant

    User->>eSewa: Initiates Payment (Rs. 1,000)
    eSewa->>Bank: Deducts Amount (Standard Fee: Rs. 10)
    Bank-->>eSewa: Confirmation (Actual Fee: Rs. 12)
    eSewa->>Merchant: Transfers Amount
    Note over eSewa: **Variance: Rs. 2 (U) - Fee higher than standard**
    eSewa->>eSewa: Analyze Cause (Bank surcharge, fraud detection)

Exam Tip: How to Score Full Marks

1. Define Clearly:

   • Always start with definitions (e.g., "Standard costing is a technique where predetermined costs are set for materials, labor, and overheads to measure performance.").

2. Use Formulas Correctly:

   • Memorize variance formulas and label them properly (e.g., "Material Price Variance = (AP - SP) × AQ").
   • Show calculations step-by-step (like the biscuit factory example).

3. Interpret Variances:

   • Don’t just compute numbers—explain why a variance is favorable/unfavorable and suggest corrective actions.

4. Real-World Application:

   • Always tie answers to Nepali businesses (e.g., "Like Daraz tracking packaging waste, a Kathmandu textile mill can reduce material quantity variance by improving cutting techniques.").

5. Diagrams & Tables:

   • Draw a Mermaid flowchart for the accounting cycle or variance analysis.
   • Use Markdown tables for standard vs. actual costs (examiners love structured data).

6. Common Mistakes to Avoid:

   • ❌ Mixing up price vs. quantity variances (e.g., using actual price in quantity variance).
   • ❌ Ignoring favorable vs. unfavorable (always state which is which).
   • ❌ Forgetting units (e.g., kg, hours, Rs.) in calculations.

Final Checklist for Exam Answers: ✔ Title: "Standard Costing and Variance Analysis – Kathmandu Biscuit Factory Case Study" ✔ Structure:

1. Define standard costing.
2. Explain variance types with formulas.
3. Worked example (like above).
4. Corrective actions.
5. Real-world link (eSewa/Daraz). ✔ Visuals: 2-3 diagrams/tables (Mermaid + Markdown). ✔ Nepali Context: Use NPR, Nepali businesses, and local examples.