The correct option is B. To allocate costs and revenues to specific departments for performance evaluation. Detailed Explanation Purpose of Departmental Accounts: Departmental accounts are a specialized form of accounting that focuses on the financial performance of different segments or departments within an organization. The primary purpose of these accounts is to provide detailed insights into how each department is performing in terms of revenue generation and cost management. This information is crucial for management to evaluate the efficiency and profitability of each department, make informed decisions, and implement strategies for improvement. Why Option B is Correct: - Allocation of Costs and Revenues: Departmental accounts allow businesses to track income and expenses specific to each department. This means that revenues generated by a department can be matched against the costs incurred by that same department. This matching is essential for assessing the profitability of each segment. - Performance Evaluation: By analyzing departmental accounts, management can identify which departments are performing well and which are underperforming. This evaluation can lead to strategic decisions such as reallocating resources, adjusting budgets, or implementing performance improvement plans. Why the Other Options are Incorrect: A. To consolidate the financial results of multiple business units into a single statement - Explanation: While consolidation is a function of financial accounting, departmental accounts do not primarily serve this purpose. Instead, they focus on individual departments rather than consolidating results across multiple business units. Consolidation typically involves combining financial statements from different entities or divisions, which is not the main goal of departmental accounts. C. To prepare tax returns for each department separately - Explanation: Tax returns are generally prepared at the organizational level rather than at the departmental level. While departmental accounts may provide useful information for tax purposes, their primary function is not to prepare separate tax returns. Tax compliance involves broader considerations that go beyond departmental performance. D. To eliminate inter-departmental transactions for financial reporting - Explanation: Eliminating inter-departmental transactions is a process typically associated with consolidation in financial reporting, especially in group accounts. Departmental accounts do not focus on eliminating these transactions; rather, they aim to provide a clear picture of each department's financial performance, including any inter-departmental transactions that may affect profitability. Common Pitfalls:

• Confusing Departmental Accounts with Consolidated Financial Statements: It's important to remember that departmental accounts focus on individual segments, while consolidated statements combine results from multiple entities.
• Overlooking the Importance of Cost Allocation: Students may underestimate the significance of accurately allocating costs and revenues, which is crucial for effective performance evaluation.
• Assuming All Departments are Profitable: Not all departments will be profitable, and understanding the reasons behind underperformance is key to making informed management decisions.

Revision Summary:

• Departmental accounts are used to allocate costs and revenues to specific departments for performance evaluation.
• They provide insights into the profitability and efficiency of each department.
• The primary focus is on individual departmental performance rather than consolidation or tax preparation.
• Understanding the purpose and function of departmental accounts is essential for effective financial management and decision-making.