Welcome to Planning and Operational Variances!
In your previous studies, you probably learned how to calculate basic variances—the difference between what we expected to happen (the budget) and what actually happened. But here is the big question: Whose fault is it when things go wrong?
Is it the production manager’s fault because they were inefficient, or is it the accountant's fault because they set an unrealistic, "out-of-date" budget? In this chapter, we learn how to split a total variance into two parts: Planning (the budget was wrong) and Operational (the performance was wrong). This makes performance management much fairer!
1. The Big Picture: Why Split Variances?
Imagine you are a chef. Your boss tells you that you spent \$200 more on flour than budgeted. You feel bad... until you realize that the world price of flour doubled yesterday! Is that your fault? No. That is a planning error.
\n\nHowever, if the price stayed the same but you spilled half the flour on the floor, that is your fault. That is an operational error.
\n\nBy splitting variances, we ensure that:
\n- \n
- Managers are only held accountable for things they can control. \n
- The budget stays relevant by updating it for "unforeseeable" changes. \n
- We get a clearer picture of where the business is truly succeeding or failing. \n
Quick Tip: If a change in price or usage was uncontrollable and external (like a market price shift), it is usually a Planning Variance. If it was controllable and internal (like staff training or machine maintenance), it is an Operational Variance.
\n\n2. The Three Steps to Success
\nTo calculate these variances, we need to look at three different figures:
\n- \n
- Original Budget (Standard): The price/quantity we set at the start of the year. \n
- Revised Budget (Ex Post): The price/quantity we should have set if we knew then what we know now (using hindsight). \n
- Actual Results: What really happened. \n
The "Bridge" Concept:
\nThink of the Revised Budget as a bridge between the Original Plan and the Actual Results.
\nOriginal Budget ↔ [Planning Variance] ↔ Revised Budget ↔ [Operational Variance] ↔ Actual Results\n
\n\n3. Calculating Planning and Operational Variances
\nDon't worry if the formulas look scary at first. Just remember: Planning compares the two "standards" (Original vs Revised), and Operational compares the "Revised" to the "Actual."
\n\nA. Materials Price Variance
\nPlanning Variance: This measures the difference caused by an "uncontrollable" change in the market price.
\n\( Planning\ Variance = (Original\ Std\ Price - Revised\ Std\ Price) \times Revised\ Quantity \)
Operational Variance: This measures how well the purchasing manager did compared to the new, realistic price.
\n\( Operational\ Variance = (Revised\ Std\ Price - Actual\ Price) \times Actual\ Quantity \)
B. Materials Usage Variance
\nPlanning Variance: This happens if the original estimate of how much material we needed was wrong (e.g., a change in the product design).
\n\( Planning\ Variance = (Original\ Std\ Usage - Revised\ Std\ Usage) \times Original\ Std\ Price \)
Operational Variance: This measures how much material the production team used compared to the new, realistic usage standard.
\n\( Operational\ Variance = (Revised\ Std\ Usage - Actual\ Usage) \times Revised\ Std\ Price \)
Memory Aid: Always use the Standard Price to value usage variances. For the Planning Variance, use the Original price. For the Operational Variance, use the Revised price.
\n\n4. Real-World Example: The "New Tech" Scenario
\nScenario: A company budgeted to use 2kg of plastic per toy at a cost of \$5/kg. However, a global shortage drove the market price up to \$7/kg. Because of this high price, the company bought a cheaper, lower-quality plastic, and the actual price paid was \$6.50/kg.
Analysis:
- Original Standard: \$5.00 \n
- Revised Standard: \$7.00 (The "real" price in the market)
- Actual Price: \$6.50 \n
The Planning Variance: (Original \$5 - Revised \$7) = \$2 Adverse. This isn't the manager's fault; the market just got more expensive.
The Operational Variance: (Revised \$7 - Actual \$6.50) = \$0.50 Favourable. The manager did a great job! Even though the price was higher than the original budget, they saved \$0.50 compared to the new market price.
Key Takeaway: Without this split, the manager would have looked bad because \$6.50 is more than \$5.00. With the split, we see they are actually a hero for saving \$0.50!
5. Important Considerations and Pitfalls
Is the Revised Budget "Fair"?
One major problem with this method is that "revising" the budget is subjective. A manager might try to revise the budget to make their own performance look better! To avoid this, revisions should only be made for unforeseeable and significant items.
Common Mistakes to Avoid:
- Mixing up the signs: Always double-check if a variance is Favourable (F) or Adverse (A). If you spent more than the (revised) budget, it's Adverse!
- Hindsight Bias: Only use info that was truly unknown at the time the budget was set. You can't revise a budget just because you felt like it halfway through the year.
Did you know? Using planning and operational variances is a form of "Beyond Budgeting" thinking. It acknowledges that the world changes fast and a fixed budget set 12 months ago might be useless for judging performance today.
6. Summary Quick-Review
Key Terms:
- Planning Variance: Difference between original standard and revised standard. (Uncontrollable).
- Operational Variance: Difference between revised standard and actual results. (Controllable).
- Ex Post Budget: Another name for the Revised Budget.
The Workflow:
1. Identify what the Original standard was.
2. Determine what the Revised (realistic) standard should have been.
3. Record the Actual results.
4. Calculate the gap between 1 & 2 (Planning) and 2 & 3 (Operational).
Don't worry if this seems tricky at first! The hardest part is usually identifying the "Revised Standard" in the exam question. Look for phrases like "it was later realized that..." or "the market price changed to..."—these are your clues to create a revised budget.