Learning Objectives
By the end of this lesson, learners should be able to:
- Explain the purpose of budgetary control.
- Distinguish between budgets, actual results and forecasts.
- Explain the concept of variance analysis.
- Distinguish favourable and adverse variances.
- Interpret material variances from an executive perspective.
- Explain price, volume and efficiency variances.
- Evaluate the limitations of variance analysis.
- Apply variance information to executive decision-making.
1. Meaning of Budgetary Control
Budgetary control is the process of comparing actual financial and operational performance with planned or budgeted performance, identifying significant differences and taking appropriate corrective action.
The basic process is:
Budget → Actual Performance → Variance → Investigation → Management Action → Review
Budgetary control is therefore not simply about identifying whether expenditure exceeded the budget.
Its broader purpose is to determine:
Why did performance differ from expectations, what does the difference mean, and what should management do about it?
2. Budget, Actual and Forecast
Executives should distinguish three important concepts.
Budget
The approved financial plan or target for a specified period.
Actual Result
What actually occurred during the period.
Forecast
Management’s updated estimate of what is expected to happen based on current information.
For example:
- Original revenue budget: $50 million
- Revenue achieved after six months: $22 million
- Updated full-year forecast: $46 million
The $50 million figure remains the original budget, while $46 million represents the current forecast.
3. Meaning of Variance
A variance is the difference between an actual result and an appropriate benchmark, such as a budget or flexible budget.
A simple formula is:
Variance = Actual Result − Budgeted Result
However, interpretation depends on the type of item.
For revenue:
- Actual revenue greater than budget may generally be favourable.
- Actual revenue below budget may generally be adverse.
For costs:
- Actual cost below budget may generally be favourable.
- Actual cost above budget may generally be adverse.
The terms favourable and adverse describe the apparent financial effect; they do not automatically explain the underlying cause.
4. Favourable Does Not Always Mean Good
Executives should avoid assuming that every favourable variance represents strong performance.
For example, a company may report lower-than-budgeted employee costs because it failed to recruit enough employees to support a strategic expansion.
The resulting cost variance may be favourable, but the operational consequence may be negative.
Similarly, a lower maintenance expense could indicate cost efficiency—or the postponement of essential maintenance.
Therefore:
A variance must be interpreted in its operational and strategic context.
5. Adverse Does Not Always Mean Poor Management
An adverse variance may result from factors outside management’s reasonable control.
Examples include:
- Unexpected commodity price increases.
- Exchange-rate movements.
- Regulatory changes.
- Supply-chain disruption.
- Sudden market changes.
Conversely, an adverse variance can arise from poor management decisions.
Executives should therefore investigate cause, controllability and consequence, rather than relying solely on the numerical direction of the variance.
6. Materiality
Not every variance requires executive investigation.
Materiality refers to the significance of a difference in relation to the organization’s financial position, performance or decision-making.
Executives may consider:
- Absolute amount.
- Percentage difference.
- Recurrence.
- Strategic importance.
- Risk.
- Controllability.
- Potential future consequences.
A small numerical variance affecting a critical strategic project may deserve greater attention than a larger variance in a routine activity.
7. Static and Flexible Budgets
A static budget is based on a predetermined level of activity.
A flexible budget adjusts expected revenues and costs according to the actual level of activity.
This distinction is important when evaluating operational performance.
Example
Suppose:
- Budgeted production = 100,000 units
- Actual production = 120,000 units
If actual costs are higher simply because production increased by 20%, comparing actual costs directly with the original budget may give a misleading impression of poor cost control.
A flexible budget provides a more appropriate benchmark.
8. Revenue Variances
Revenue variance analysis can help executives understand why actual revenue differs from expectations.
Possible causes include:
- Changes in sales volume.
- Changes in selling prices.
- Changes in product or service mix.
- Customer demand.
- Market conditions.
Simplified Revenue Variance
Revenue Variance = Actual Revenue − Budgeted Revenue
However, a useful executive analysis goes beyond the total difference and asks:
Was the difference caused by selling more, charging different prices, or changing the mix of products and customers?
9. Cost Variances
Cost variance analysis investigates why actual costs differ from expectations.
Common causes include:
- Price changes.
- Quantity or usage changes.
- Efficiency.
- Activity volume.
- Supplier conditions.
- Operational decisions.
A total adverse cost variance may therefore contain both controllable and uncontrollable elements.
10. Price Variance
A price variance arises when the actual price paid differs from the expected or standard price.
For a material input, conceptually:
Price Variance = Actual Quantity × (Actual Price − Standard Price)
The precise interpretation depends on the organization’s variance convention.
An adverse price variance might result from:
- Supplier price increases.
- Poor procurement negotiations.
- Emergency purchasing.
- Changes in input quality.
Executives should investigate the underlying cause before concluding that procurement performance deteriorated.
11. Efficiency or Usage Variance
An efficiency variance arises when the quantity of resources used differs from the quantity expected for the actual level of output.
Possible causes include:
- Production inefficiency.
- Waste.
- Equipment problems.
- Employee training issues.
- Changes in material quality.
An unfavorable usage variance may indicate operational inefficiency, but it may also arise from external factors such as poor-quality inputs.
12. Volume Variance
A volume variance occurs when actual activity differs from the level assumed in the original budget.
For example, actual production may be substantially higher or lower than planned.
Volume differences can affect:
- Revenue.
- Variable costs.
- Labour requirements.
- Capacity utilization.
- Fixed-cost absorption.
Executives should distinguish volume effects from genuine efficiency or pricing problems.
13. Variance Investigation
A useful variance investigation can follow five questions:
1. What happened?
Identify the numerical difference.
2. How significant is it?
Assess materiality.
3. Why did it happen?
Identify the underlying drivers.
4. Who can influence the cause?
Assess responsibility and controllability.
5. What action is required?
Determine whether management should correct, monitor or accept the variance.
This approach prevents management from treating variance reports as merely numerical scorecards.
14. Management by Exception
Management by exception involves directing management attention toward significant deviations from expected performance.
Instead of investigating every variance equally, executives may establish thresholds based on:
- Percentage.
- Monetary value.
- Risk.
- Strategic importance.
This allows management attention to be concentrated where it is most valuable.
However, thresholds should not be so rigid that important emerging problems are overlooked.
15. Behavioural Effects of Variance Analysis
Variance systems can influence managerial behaviour.
If managers are rewarded solely for staying within budget, they may:
- Delay necessary expenditure.
- Reduce useful investment.
- Build budgetary slack.
- Focus excessively on short-term results.
Effective performance systems should therefore combine financial measures with appropriate operational and strategic indicators.
16. Budgetary Control and Responsibility Accounting
Variance analysis is often linked to responsibility accounting.
Managers should generally be evaluated on outcomes they can reasonably influence.
For example:
- A procurement manager may influence purchasing prices.
- A production manager may influence operational efficiency.
- A sales manager may influence sales volume and customer relationships.
However, external changes such as unexpected currency movements may not be fully controllable by any individual manager.
Executives should therefore avoid simplistic attribution of variances.
17. Variance Analysis and Forecasting
Variance analysis provides historical information about what has happened.
Forecasting uses current information to estimate what is likely to happen next.
The two should work together:
Variance Analysis → Understanding Performance
Forecasting → Anticipating Future Outcomes
For example, repeated adverse revenue variances may cause management to revise its full-year revenue forecast.
Thus, variance analysis can become an important input into forward-looking executive decision-making.
18. Limitations of Variance Analysis
Variance analysis has several limitations.
Historical Focus
It often explains what has already happened rather than what will happen.
Excessive Financial Focus
Important non-financial indicators may be overlooked.
Measurement Problems
Poorly constructed standards or budgets can produce misleading variances.
Behavioural Distortion
Managers may optimize their performance against the measurement system rather than organizational objectives.
External Factors
Some variances may be driven by factors outside management control.
Consequently, variance analysis should be integrated with broader performance management.
19. Practical Executive Application
An international manufacturing organization reports an adverse materials-cost variance of 8%.
The initial conclusion is that procurement performance has deteriorated.
Further investigation reveals:
- 5% resulted from an unexpected global increase in raw-material prices.
- 2% resulted from an unfavorable exchange-rate movement.
- 1% resulted from purchasing inefficiencies.
A sophisticated executive response would not treat the entire 8% as procurement failure.
Instead, management would:
- Separate external and controllable factors.
- Assess the financial impact.
- Review procurement decisions.
- Update forecasts if necessary.
- Consider appropriate risk-mitigation measures.
This illustrates why variance analysis requires interpretation, not merely calculation.
Lesson Summary
Budgetary control compares actual performance with appropriate financial expectations and uses the resulting information to support management action.
Variance analysis helps executives identify differences arising from:
- Price.
- Volume.
- Efficiency.
- Usage.
- Mix.
- External conditions.
However, a favourable or adverse variance does not automatically indicate good or poor management.
Effective executive analysis considers:
Magnitude + Cause + Controllability + Strategic Impact + Required Action
Key Principle
The value of variance analysis lies not in identifying differences alone, but in understanding their causes and determining whether management action is required.
References
- AICPA & CIMA — Management Accounting and Performance Management Resources
AICPA & CIMA - IFRS Foundation — Conceptual Framework for Financial Reporting
IFRS Conceptual Framework - Institute of Management Accountants — Management Accounting Resources
Institute of Management Accountants - Drury, C. — Management and Cost Accounting. Cengage.
- Horngren, C. T., Datar, S. M., & Rajan, M. V. — Cost Accounting: A Managerial Emphasis. Pearson.