Investment centers and profit centers are two important concepts in management accounting. While both evaluate performance at a decentralized level, there are some key differences between them. Understanding these distinctions can help managers design effective performance measurement systems. This article will examine how investment centers differ from profit centers in that they explain capital charging.
Investment centers and profit centers are decentralized units that managers are held accountable for. The key distinction lies in how their performance is evaluated. Profit centers only focus on profits generated. Investment centers go a step further by also considering the amount of capital invested. The inclusion of capital costs is what sets investment centers apart.
By factoring in capital costs, investment centers provide a more comprehensive assessment of performance. The capital charge represents the cost of funds invested in the business unit. It may include the cost of debt, cost of equity, or an overall weighted average cost of capital. This charge must be deducted along with expenses when determining the unit’s profitability. In this way, investment centers explain capital charging as part of performance evaluation.

Investment centers evaluate performance based on residual income after capital charges
A key way investment centers differ from profit centers is in the performance metric used. Profit centers simply look at the unit’s profitability. As long as revenues exceed expenses, the unit is considered successful. Investment centers add another layer by deducting capital charges from the profit calculation.
The resulting performance measure is known as residual income. This represents profits left over after covering the required return on capital invested. Residual income provides a more well-rounded assessment of performance. Profits could be high simply because a large amount of capital is employed. Residual income accounts for the cost of that capital, putting all units on an equal footing.
With residual income, managers are encouraged to use capital more efficiently. Investing additional funds makes sense only if they generate returns exceeding the cost of capital. The residual income approach discourages overinvestment and focuses managers on optimizing capital productivity.
Investment center performance reflects both managerial effort and capital investment
A profit center essentially evaluates a manager’s efforts alone. Profits depend on how well the manager controls revenues and expenses. This represents only one side of the picture. The manager’s decisions affect capital investment as well. Evaluating investment centers by residual income reflects both aspects.
The manager has more influence over operations and profitability. But capital investment also impacts residuals. A manager may struggle to meet a 20% return target if saddled with outdated equipment. Access to the latest technology could help boost productivity. Residual income rewards capable managers who make sound investment decisions.
By factoring in capital costs, the performance of investment centers depends jointly on managerial efficiency and capital spending. This prevents placing blame unfairly. A manager who skimps on needed investment may show artificially high residuals in the short run. But this will hurt performance over the long term as competitors adopt better technology.
Investment center managers have responsibility over capital budgeting decisions
A defining feature of investment centers is the delegation of capital budgeting authority. Profit center managers have control only over revenues and costs. They rely on central management to decide capital spending. Investment center managers have the power to make capital investment decisions for their units.
Giving managers this budgeting responsibility provides better incentives. Those closest to day-to-day operations may have the clearest insights into investment needs. Local managers also bear the responsibility for delivering returns on those investments. Combining authority over capital budgets with performance accountability promotes better decisions.
However, investment center managers typically don’t have unlimited capital authority. Larger, riskier, or strategically important projects still require approval from the corporate level. But managers can authorize recurring or smaller capital expenditures as needed. The added involvement in capital budgeting is a key distinction from profit center managers.
Residual income measures at investment centers must consider divisional differences
While residual income is a more advanced performance metric, calculating it properly presents some challenges. A hurdle is comparing divisions with different business conditions and investment characteristics.
Residual income depends heavily on the capital charge. But an appropriate charge may differ across divisions based on factors like asset structure, risk profiles, and external cost of capital. Charging each division its own specific cost of capital can better reflect performance.
Many organizations compromise with a uniform corporate-wide capital charge. But this approach has flaws. Charging a single corporate rate to all divisions can penalize those operating in more capital-intensive industries. A utility subsidiary may find a 10% capital charge unrealistic given the assets required.
Tailoring capital charges requires more work but leads to fairer residual income assessments. This issue demonstrates a key complication that investment centers face compared to simple profit centers.
Investment centers provide fuller performance assessment than profit centers by factoring capital costs into residual income. This approach enhances incentives and accountability for both operations and capital spending. However, properly implementing residual income measures presents challenges in setting capital charges across different divisions.