Residual income (RI) is a performance measure that considers both profits and the investment base by calculating the excess income generated over a required minimum return on investment (ROI).

(A) Residual income (Correct Answer):

Formula: Residual Income=Operating Income−(Required Rate of Return×Investment Base)\text{Residual Income} = \text{Operating Income} - (\text{Required Rate of Return} \times \text{Investment Base})Residual Income=Operating Income−(Required Rate of Return×Investment Base)

RI evaluates profitability after accounting for the cost of capital, making it a better measure of financial performance than net income alone.

It considers both profits (net operating income) and the investment base (capital employed).

(B) A flexible budget:

A flexible budget adjusts based on changes in activity levels but does not directly include investment base considerations.

(C) Variance analysis:

Variance analysis compares actual vs. budgeted performance but does not consider investment base.

(D) A contribution margin income statement by segment:

The contribution margin shows revenue minus variable costs but does not factor in the investment base.

IIA Practice Guide: Measuring Performance – Recognizes residual income as a key metric for evaluating divisional performance.

COSO ERM Framework – Performance Measurement Component – Emphasizes using metrics that account for both profitability and investment.

IIA Standard 2120 - Risk Management – Highlights the importance of financial metrics in evaluating strategic objectives.

Analysis of Each Option:IIA References:Conclusion:Since Residual Income (RI) considers both profits and investment base, option (A) is the correct answer.