Study guide
14.1 Divisional Performance: Return on Investment & Residual Income
ACCA Applied Knowledge — Management Accounting MA
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1 Chapter 1: Nature, Purpose & Source of Management Information
1.1 Role of Management Accounting, Planning Levels & Information Quality 1.2 Sources of Data, Big Data & Data Capture Costs 1.3 Cost Classification, Cost Behaviour & Coding Systems
2 Chapter 2: Cost Centres, Cost Units & Presenting Information
2.1 Cost Objects, Responsibility Centres & Managerial Needs 2.2 Presenting Management Information & Visualisation
3 Chapter 3: Sampling Methods, Statistical Summaries & Spreadsheets
3.1 Sampling Methods & Practical Selection 3.2 Data Summarisation, Dispersion & Probability in Decisions 3.3 Normal Distribution & Spreadsheet Applications in Accounting
4 Chapter 4: Forecasting Techniques, Time Series & Index Numbers
4.1 Linear Functions & The High-Low Method 4.2 Correlation, Linear Regression & Product Life Cycle 4.3 Time Series Analysis & Index Numbers
5 Chapter 5: Accounting for Materials & Inventory Control
5.1 Material Procedures, Physical Control & Inventory Valuation 5.2 Economic Order Quantity & Bulk Purchase Discounts 5.3 Economic Batch Quantity & Inventory Reorder Levels
6 Chapter 6: Accounting for Labour & Overhead Costs
6.1 Accounting for Labour, Remuneration Systems & Labour Ratios 6.2 Overhead Allocation, Apportionment & Reciprocal Reapportionment 6.3 Overhead Absorption Rates & Under/Over Absorption
7 Chapter 7: Marginal Costing & Absorption Costing
7.1 Marginal Costing, Contribution & Cost-Volume-Profit Analysis 7.2 Profit Comparison & Reconciliation Between Absorption and Marginal Costing
8 Chapter 8: Costing Methods & Alternative Principles
8.1 Job Costing, Batch Costing & Service/Operation Costing 8.2 Process Costing, Losses, Gains & Joint/By-Products 8.3 Alternative Cost Accounting: ABC, Target Costing & Life-Cycle Costing
9 Chapter 9: Budgetary Planning, Preparation & Behaviour
9.1 Budgetary Framework, Administration & The Principal Budget Factor 9.2 Functional Budgets, Cash Budgets & Master Budgets 9.3 What-If Analysis, Motivation & Behavioural Aspects of Budgeting
10 Chapter 10: Flexible Budgets & Capital Investment Appraisal
10.1 Flexible Budgets & Budgetary Control Reporting 10.2 Capital Expenditure, Compounding & Discounting Fundamentals 10.3 Discounted Cash Flow: NPV, IRR & Payback Methods
11 Chapter 11: Standard Costing & Basic Cost Variances
11.1 Standard Costing Purpose, Principles & Standard Cost Cards 11.2 Sales Price, Sales Volume & Direct Material Variances 11.3 Direct Labour & Overhead Variances
12 Chapter 12: Variance Investigation & Operating Statements
12.1 Variance Investigation, Interrelationships & Reverse Calculations 12.2 Operating Statements & Profit Reconciliations
13 Chapter 13: Performance Measurement Framework & Financial Analysis
13.1 Mission Statements, Objectives & Contextual Influences 13.2 Financial Performance: Profitability & Operating Efficiency Ratios 13.3 Financial Performance: Liquidity & Financial Gearing Ratios
14 Chapter 14: Divisional Performance, Multidimensional Models & Quality
14.1 Divisional Performance: Return on Investment & Residual Income 14.2 The Balanced Scorecard, Critical Success Factors & KPIs 14.3 Value for Money (3Es), Resource Utilisation & Non-Profit Performance 14.4 Quality Management, Benchmarking, Cost Control & Cost Reduction
14.1 Divisional Performance: Return on Investment & Residual Income
Key Takeaways Explain This Topic AI
Decentralisation delegates operational decision-making authority to divisional managers, creating investment centres that must be evaluated on both operating profitability and capital asset efficiency.
Return on Investment (ROI = Controllable Profit / Capital Employed × 100%) is an intuitive percentage metric that enables cross-divisional comparisons but induces sub-optimisation by incentivising high-performing divisions to reject viable corporate projects exceeding the cost of capital.
Residual Income (RI = Controllable Profit - [Capital Employed × Imputed Cost of Capital]) measures absolute economic surplus and achieves goal congruence by aligning divisional project selection with corporate wealth maximisation.
Asset valuation policies create severe measurement distortions: Net Book Value (NBV) causes ROI to artificially increase over time as assets depreciate, penalising divisions investing in modern productive equipment.
The Controllability Principle dictates that divisional appraisals must strictly isolate controllable operating profit and controllable capital employed, excluding apportioned central overheads and head office corporate assets.
Last updated: September 2026
Divisional Performance: Return on Investment & Residual Income
Core Principle: In decentralized organizations, investment centre managers exercise authority over operating revenues, production costs, and capital asset investments. Evaluating these managers requires performance measures that relate profit generated to the capital tied up in the division. The two primary accounting metrics— Return on Investment (ROI) and Residual Income (RI) —frequently yield conflicting investment decisions. While ROI is a relative percentage that facilitates cross-divisional benchmarking, it suffers from the fatal flaw of sub-optimisation , causing managers of highly profitable divisions to reject viable corporate projects. In contrast, Residual Income uses an imputed cost of capital charge to achieve goal congruence , ensuring divisional actions directly maximize corporate shareholder wealth.
1. Decentralisation, Divisionalisation & The Investment Centre Framework
As organizations expand in geographic reach, product diversity, and operational scale, top corporate leadership can no longer manage daily tactical decisions centrally. Entities respond by implementing decentralisation —delegating decision-making autonomy to divisional directors who manage semi-autonomous operating units.
1.1 The Economic Rationale for Divisionalisation
Specialized Local Knowledge: Divisional managers possess immediate, nuanced understanding of local customer preferences, regional supply chains, and competitor moves.
Speed and Agility: Eliminates bureaucratic bottlenecks, allowing swift tactical responses to operational disruptions.
Executive Strategy Focus: Frees corporate senior leadership from daily firefighting, allowing them to focus on long-term corporate strategy and capital allocation.
Managerial Motivation & Succession: Autonomy empowers divisional leaders, fostering entrepreneurial initiative and serving as a training ground for future corporate executives.
1.2 Responsibility Centre Taxonomy
To maintain accountability within a decentralized structure, organizations establish responsibility centres categorized by managerial decision scope:
Centre Classification Managerial Authority & Control Primary Performance Metric
Cost Centre Incurs operating costs only; no control over revenues or capital assets Standard cost variances, flexible budget variances
Revenue Centre Generates sales revenue only; no control over manufacturing costs or capital Sales volume variances, sales price variances, market share
Profit Centre Controls both revenues and operating costs; no control over capital assets Controllable profit margins, contribution statements
Investment Centre Controls revenues, operating costs, and capital investment in non-current and working capital assets Return on Investment (ROI) , Residual Income (RI)
1.3 The Controllability Principle in Divisional Evaluation
A fundamental rule of management accounting is the Controllability Principle : managers should only be held accountable for outcomes over which they exercise direct decision-making authority. Controllable Divisional Profit = Divisional Revenues − Controllable Operating Costs \text{Controllable Divisional Profit} = \text{Divisional Revenues} - \text{Controllable Operating Costs} Controllable Divisional Profit = Divisional Revenues − Controllable Operating Costs Divisional Capital Employed = Controllable Non-Current Assets + Controllable Net Working Capital \text{Divisional Capital Employed} = \text{Controllable Non-Current Assets} + \text{Controllable Net Working Capital} Divisional Capital Employed = Controllable Non-Current Assets + Controllable Net Working Capital
Important
What to Exclude from Divisional Performance Appraisals:
Centrally Apportioned Overheads: Head office corporate expenses (e.g., group executive salaries, corporate public relations, group legal fees) must not be deducted when calculating controllable divisional profit. Divisional managers cannot influence how central corporate expenses are incurred.
Financing Charges & Taxes: Group interest expenses, debt servicing costs, and corporate income taxes reflect central treasury decisions and must be excluded.
Non-Controllable Assets: Central headquarters buildings, shared group IT servers, and surplus cash reserves held in group treasury pools must be excluded from divisional capital employed.
2. Return on Investment (ROI): Mechanics, Strengths & Flaws
Return on Investment (ROI) —also termed divisional Return on Capital Employed (ROCE)—measures the percentage return generated on the capital assets deployed within a division.
2.1 The Foundational Formula & DuPont Decomposition ROI = Controllable Divisional Profit Divisional Capital Employed × 100 % \text{ROI} = \frac{\text{Controllable Divisional Profit}}{\text{Divisional Capital Employed}} \times 100\% ROI = Divisional Capital Employed Controllable Divisional Profit × 100%
Under the classic DuPont Analysis , ROI can be decomposed into two distinct operational levers: ROI = Operating Profit Margin × Asset Turnover \text{ROI} = \text{Operating Profit Margin} \times \text{Asset Turnover} ROI = Operating Profit Margin × Asset Turnover ROI = ( Controllable Profit Sales Turnover ) × ( Sales Turnover Capital Employed ) \text{ROI} = \left(\frac{\text{Controllable Profit}}{\text{Sales Turnover}}\right) \times \left(\frac{\text{Sales Turnover}}{\text{Capital Employed}}\right) ROI = ( Sales Turnover Controllable Profit ) × ( Capital Employed Sales Turnover )
Profit Margin Lever: Measures commercial pricing power and operational cost control. How many cents of profit are generated from each dollar of revenue?
Asset Turnover Lever: Measures capital efficiency and asset productivity. How many dollars of sales volume are generated from each dollar of capital tied up in the division?
2.2 Advantages of ROI
Intuitive Relative Metric: Expressed as a percentage, ROI is easily understood by operational managers and corporate boards.
Cross-Divisional Comparability: Enables direct performance comparisons between divisions of vastly different physical sizes (e.g., comparing a $10M division to a $100M division).
Dual Focus on Profit and Capital: Prevents managers from treating capital assets as "free" goods, encouraging them to monitor working capital and dispose of idle machinery.
2.3 The Fatal Flaw: The Sub-Optimisation Problem
The primary drawback of ROI is sub-optimisation (or lack of goal congruence). Sub-optimisation occurs when a divisional manager takes decisions that benefit their individual division's performance metric but damage the overall corporation as a whole.
Caution
The ROI Sub-Optimisation Trap: If a divisional manager is appraised and remunerated based on ROI, the manager will reject any new capital investment project whose expected return is below the division's current average ROI , even if the project's return is well above the corporate cost of capital .
Rejecting such a project deprives the corporation of valuable economic profit, destroying shareholder wealth.
3. Residual Income (RI): Mechanics & Goal Congruence
Residual Income (RI) resolves the sub-optimisation dilemma by measuring performance in absolute monetary terms rather than as a percentage ratio. It calculates the net financial surplus generated by a division above a mandatory imputed interest charge for capital.
3.1 The Residual Income Formula Residual Income = Controllable Profit − ( Capital Employed × Imputed Cost of Capital Rate ) \text{Residual Income} = \text{Controllable Profit} - (\text{Capital Employed} \times \text{Imputed Cost of Capital Rate}) Residual Income = Controllable Profit − ( Capital Employed × Imputed Cost of Capital Rate )
Imputed Cost of Capital: A notional interest rate representing the company's opportunity cost of capital—typically the corporate Weighted Average Cost of Capital (WACC) or a risk-adjusted hurdle rate.
Economic Surplus: If RI > 0 \text{RI} > 0 RI > 0 , the division generates returns exceeding the financing cost of its capital, creating net economic wealth for corporate shareholders.
3.2 Advantages of Residual Income
Guarantees Goal Congruence: Any new investment project that earns a return greater than the corporate cost of capital generates a positive Residual Income . Consequently, divisional managers will accept every project that creates corporate wealth, eliminating sub-optimisation.
Flexible Cost of Capital Rates: Corporate leadership can apply different imputed interest rates to different divisions to reflect variations in asset risk profiles, industry risk, or geographic location.
Reduces Disincentives to Modernise: Managers are not penalized for expanding their capital base, provided the incremental profit exceeds the capital charge.
3.3 Limitations of Residual Income
Absolute Monetary Bias: Because RI produces an absolute dollar amount, it favors large divisions over small divisions. A $100M division earning a 13% return on an 11% cost of capital produces an RI of $2M, whereas a $5M division earning an exceptional 30% return produces an RI of only $950,000.
Less Intuitive to Operating Line Managers: Non-financial managers often find percentage yields (ROI) easier to conceptualize than imputed capital deductions.
4. Comprehensive Worked Numerical Case Study: ROI vs RI in Action
To see how ROI and RI diverge in practice, consider the following corporate investment decision scenario:
Scenario: Apex Conglomerate has a corporate cost of capital of 12.0% . The group operates two decentralized divisions:
Division Alpha (Electronics): Currently earns a controllable profit of $500,000 on capital employed of $2,000,000 (Current ROI = 25.0 % \text{ROI} = 25.0\% ROI = 25.0% ).
Division Beta (Heavy Fabrication): Currently earns a controllable profit of $700,000 on capital employed of $5,000,000 (Current ROI = 14.0 % \text{ROI} = 14.0\% ROI = 14.0% ).
Both divisions are presented with an identical new capital expansion project, Project X :
- Required Capital Investment: $500,000
- Expected Annual Controllable Profit: $90,000
Standalone Project Return: $ 90 , 000 $ 500 , 000 = 18.0 % \frac{\text{\textdollar}90,000}{\text{\textdollar}500,000} = \mathbf{18.0\%} $ 500 , 000 $ 90 , 000 = 18.0%
Corporate executive management wishes to know whether the divisional managers will accept or reject Project X under ROI versus RI evaluation.
- 4.1 Standalone Corporate Assessment of Project X
- Project Return = 18.0 % = 18.0\% = 18.0%
- Corporate Cost of Capital = 12.0 % = 12.0\% = 12.0%
Project Standalone Residual Income = $ 90 , 000 − ( $ 500 , 000 × 12 % ) = $ 90 , 000 − $ 60 , 000 = + $ 30 , 000 = \text{\textdollar}90,000 - (\text{\textdollar}500,000 \times 12\%) = \text{\textdollar}90,000 - \text{\textdollar}60,000 = \mathbf{+\text{\textdollar}30,000} = $ 90 , 000 − ( $ 500 , 000 × 12% ) = $ 90 , 000 − $ 60 , 000 = + $ 30 , 000
Corporate Verdict: Project X is highly desirable. It generates an 18 % 18\% 18% return against a 12 % 12\% 12% financing hurdle, delivering $ 30 , 000 \text{\textdollar}30,000 $ 30 , 000 in net annual wealth to group shareholders.
4.2 Detailed Divisional Evaluation Under ROI
- Performance Metric Division Alpha (Electronics) Division Beta (Heavy Fabrication)
- Current Capital Employed $2,000,000 $5,000,000
- Current Controllable Profit $500,000 $700,000
Current Divisional ROI $ 500 , 000 $ 2 , 000 , 000 = 25.00 % \frac{\text{\textdollar}500,000}{\text{\textdollar}2,000,000} = \mathbf{25.00\%} $ 2 , 000 , 000 $ 500 , 000 = 25.00% $ 700 , 000 $ 5 , 000 , 000 = 14.00 % \frac{\text{\textdollar}700,000}{\text{\textdollar}5,000,000} = \mathbf{14.00\%} $ 5 , 000 , 000 $ 700 , 000 = 14.00%
- Capital with Project X $2,000,000 + $500,000 = $2,500,000 $5,000,000 + $500,000 = $5,500,000
- Profit with Project X $500,000 + $90,000 = $590,000 $700,000 + $90,000 = $790,000
New Divisional ROI $ 590 , 000 $ 2 , 500 , 000 = 23.60 % \frac{\text{\textdollar}590,000}{\text{\textdollar}2,500,000} = \mathbf{23.60\%} $ 2 , 500 , 000 $ 590 , 000 = 23.60% $ 790 , 000 $ 5 , 500 , 000 = 14.36 % \frac{\text{\textdollar}790,000}{\text{\textdollar}5,500,000} = \mathbf{14.36\%} $ 5 , 500 , 000 $ 790 , 000 = 14.36%
Change in Divisional ROI − 1.40 % \mathbf{-1.40\%} − 1.40% (Deterioration) + 0.36 % \mathbf{+0.36\%} + 0.36% (Improvement)
- Managerial Decision under ROI REJECT Project X ACCEPT Project X
- The Sub-Optimisation Paradox Unveiled
Division Alpha's Manager: Because Project X yields 18 % 18\% 18% , which is lower than Alpha's current average of 25 % 25\% 25% , accepting the project dilutes Alpha's overall ROI from 25.00 % 25.00\% 25.00% to 23.60 % 23.60\% 23.60% . If the manager's annual bonus depends on maintaining a 25 % 25\% 25% ROI, the manager will reject Project X. This is a catastrophic failure of goal congruence: a viable 18 % 18\% 18% project is discarded.
Division Beta's Manager: Because 18 % 18\% 18% exceeds Beta's current average of 14 % 14\% 14% , accepting Project X boosts Beta's overall ROI from 14.00 % 14.00\% 14.00% to 14.36 % 14.36\% 14.36% . The manager of Beta enthusiastically accepts the project.
4.3 Detailed Divisional Evaluation Under Residual Income (RI)
- Performance Metric Division Alpha (Electronics) Division Beta (Heavy Fabrication)
- Current Controllable Profit $500,000 $700,000
Current Capital Charge (12%) $ 2 , 000 , 000 × 12 % = $ 240 , 000 \text{\textdollar}2,000,000 \times 12\% = \text{\textdollar}240,000 $ 2 , 000 , 000 × 12% = $ 240 , 000 $ 5 , 000 , 000 × 12 % = $ 600 , 000 \text{\textdollar}5,000,000 \times 12\% = \text{\textdollar}600,000 $ 5 , 000 , 000 × 12% = $ 600 , 000
Current Residual Income $ 500 , 000 − $ 240 , 000 = $ 260 , 000 \text{\textdollar}500,000 - \text{\textdollar}240,000 = \mathbf{\text{\textdollar}260,000} $ 500 , 000 − $ 240 , 000 = $ 260 , 000 $ 700 , 000 − $ 600 , 000 = $ 100 , 000 \text{\textdollar}700,000 - \text{\textdollar}600,000 = \mathbf{\text{\textdollar}100,000} $ 700 , 000 − $ 600 , 000 = $ 100 , 000
New Controllable Profit $590,000 $790,000
New Capital Charge (12%) $ 2 , 500 , 000 × 12 % = $ 300 , 000 \text{\textdollar}2,500,000 \times 12\% = \text{\textdollar}300,000 $ 2 , 500 , 000 × 12% = $ 300 , 000 $ 5 , 500 , 000 × 12 % = $ 660 , 000 \text{\textdollar}5,500,000 \times 12\% = \text{\textdollar}660,000 $ 5 , 500 , 000 × 12% = $ 660 , 000
New Residual Income $ 590 , 000 − $ 300 , 000 = $ 290 , 000 \text{\textdollar}590,000 - \text{\textdollar}300,000 = \mathbf{\text{\textdollar}290,000} $ 590 , 000 − $ 300 , 000 = $ 290 , 000 $ 790 , 000 − $ 660 , 000 = $ 130 , 000 \text{\textdollar}790,000 - \text{\textdollar}660,000 = \mathbf{\text{\textdollar}130,000} $ 790 , 000 − $ 660 , 000 = $ 130 , 000
Change in Residual Income + $ 30 , 000 \mathbf{+\text{\textdollar}30,000} + $ 30 , 000 + $ 30 , 000 \mathbf{+\text{\textdollar}30,000} + $ 30 , 000
- Managerial Decision under RI ACCEPT Project X ACCEPT Project X
- Goal Congruence Restored
Under Residual Income, the change in divisional RI ( + $ 30 , 000 +\text{\textdollar}30,000 + $ 30 , 000 ) matches the project's standalone economic value. Both managers accept Project X, perfectly harmonizing divisional self-interest with corporate shareholder wealth.
5. Asset Valuation Bases & The Aging Asset Distortion
The numerical value of Capital Employed depends heavily on the accounting valuation method used for non-current assets. In practice, three valuation bases are encountered:
Net Book Value (NBV): Original purchase cost less accumulated depreciation.
Gross Book Value (GBV / Historical Cost): Original purchase cost without deducting depreciation.
Replacement Cost / Current Value: Current market cost to replace the asset in its existing operational condition.
5.1 The Aging Asset Illusion under Net Book Value (NBV)
When Net Book Value is used in the ROI denominator, a major accounting distortion arises: as assets grow older, their NBV declines systematically through annual depreciation . Even if an aging machine produces exactly the same physical output and identical operating cash flows each year, the reported ROI will mechanically inflate year after year .
Proof of the Aging Asset Distortion
Consider an industrial machine purchased for $100,000 with a 5-year useful economic life, zero residual value, and straight-line depreciation of $20,000 per year . The machine generates a constant operating cash flow before depreciation of $25,000 per year ($5,000 net profit after depreciation):
Operating Year Cash Flow Before Depr Annual Depreciation Net Controllable Profit Opening Net Book Value Reported ROI (Opening NBV)
Year 1 $25,000 $20,000 $5,000 $100,000 $ 5 , 000 $ 100 , 000 = 5.0 % \frac{\text{\textdollar}5,000}{\text{\textdollar}100,000} = \mathbf{5.0\%} $ 100 , 000 $ 5 , 000 = 5.0%
Year 2 $25,000 $20,000 $5,000 $80,000 $ 5 , 000 $ 80 , 000 = 6.25 % \frac{\text{\textdollar}5,000}{\text{\textdollar}80,000} = \mathbf{6.25\%} $ 80 , 000 $ 5 , 000 = 6.25%
Year 3 $25,000 $20,000 $5,000 $60,000 $ 5 , 000 $ 60 , 000 = 8.33 % \frac{\text{\textdollar}5,000}{\text{\textdollar}60,000} = \mathbf{8.33\%} $ 60 , 000 $ 5 , 000 = 8.33%
Year 4 $25,000 $20,000 $5,000 $40,000 $ 5 , 000 $ 40 , 000 = 12.50 % \frac{\text{\textdollar}5,000}{\text{\textdollar}40,000} = \mathbf{12.50\%} $ 40 , 000 $ 5 , 000 = 12.50%
Year 5 $25,000 $20,000 $5,000 $20,000 $ 5 , 000 $ 20 , 000 = 25.00 % \frac{\text{\textdollar}5,000}{\text{\textdollar}20,000} = \mathbf{25.00\%} $ 20 , 000 $ 5 , 000 = 25.00%
Warning
Perverse Managerial Behavior Under NBV Valuation:
Over 5 years, the reported ROI rises from 5.0% to 25.0% , creating an optical illusion of dramatically improving managerial efficiency when physical operational throughput is completely static.
Disincentive to Reinvest: A division manager operating fully depreciated machinery enjoys an artificially high ROI. If the manager purchases brand-new, modern equipment, the division's capital employed will jump instantly, depressing reported ROI for the next 2–3 years. Consequently, managers cling to old, unreliable, maintenance-heavy assets rather than modernizing.
5.2 Evaluating Alternative Valuation Bases
Valuation Basis Conceptual Definition Advantages Disadvantages & Distortions
Net Book Value (NBV) Original cost less accumulated depreciation Matches published financial statements; readily available from general ledger Causes artificial upward drift in ROI over time; discourages capital replacement; penalises newer divisions
Gross Book Value (GBV) Original historical acquisition cost Eliminates the aging asset distortion; reported ROI remains stable across an asset's useful life Ignores physical wear and tear; distorts comparisons when older assets were bought under historical inflation
Replacement Cost Current market cost to replace the asset in its present operating state Economically realistic; reflects true current capital tied up; eliminates inflation bias Highly subjective; requires expensive periodic physical appraisals; contentious for custom machinery
6. Exam Traps & Pitfalls in Divisional Performance
Apportioning Central Corporate Overheads: A common exam question presents divisional income statements containing an allocated share of "Head Office Corporate Costs" (e.g., $150,000). Candidates who deduct this figure when calculating controllable divisional profit will arrive at incorrect ROI and RI figures. Always strip out uncontrollable central allocations.
Conflating Project ROI with Combined Divisional ROI: When asked whether a manager will accept a project under ROI, candidates often compare the project's standalone ROI to the cost of capital. Remember: the divisional manager compares the project to their existing divisional average ROI ! If existing ROI is 24% and the project earns 19%, the manager will reject it under ROI, even if the cost of capital is only 10%.
Treating Residual Income as a Relative Percentage: In multiple-choice questions, examiners often ask which metric is suitable for ranking divisions of unequal size. Answering "Residual Income" is incorrect; because RI is an absolute dollar metric, larger divisions naturally produce larger RI figures regardless of operational efficiency.
Capital Employed Timing Conventions: Pay strict attention to whether the exam question specifies Opening Capital Employed , Closing Capital Employed , or Average Capital Employed . Unless stated otherwise, standard ACCA practice utilizes Opening Capital Employed or Capital Employed at the start of the appraisal period.