📚 Year 11 CAIE Accounting: Case Study Practical Drill | Year 11 CAIE 会计：案例分析实战演练
Mastering case study questions in CAIE IGCSE Accounting requires a structured approach, combining theoretical knowledge with practical application. In this practical drill, we will walk through a complete case study for a small business, Sophie’s Stationery Shop, highlighting the essential steps from analysing the trial balance and adjusting entries to constructing financial statements and interpreting key ratios. Each section blends English explanation with its Chinese counterpart to ensure you can confidently tackle similar exam scenarios.
掌握CAIE IGCSE会计的案例分析题需要有条理的思路，将理论知识结合实际操作。本次实战演练将带你一步步完成一家小型企业 Sophie’s Stationery Shop 的完整案例，重点演示从试算平衡表分析、调整分录到编制财务报表和解读关键比率的每个环节。每个部分都采用英文讲解配合中文阐述，帮助你从容应对考试中类似的题目。
1. Unfolding the Case Scenario | 展开案例情景
The trial balance of Sophie’s Stationery Shop as at 31 December 2024 shows the following balances: Sales Revenue $120 000 (credit), Purchases $76 000 (debit), Inventory at 1 January 2024 $8 000 (debit), Rent $24 000 (debit), Wages $18 000 (debit), General Expenses $6 000 (debit), Equipment at cost $30 000 (debit), Accumulated Depreciation on Equipment $4 000 (credit), Trade Receivables $12 000 (debit), Trade Payables $9 000 (credit), Cash at Bank $15 000 (debit), Drawings $5 000 (debit), and Capital $61 000 (credit). The following adjustments must be made at the year end: closing inventory was valued at $10 000; equipment is depreciated at 20% per annum on cost; rent paid in advance amounts to $2 000; wages owing but unpaid total $3 000; a bad debt of $500 needs to be written off.
Sophie’s Stationery Shop 截至 2024 年 12 月 31 日的试算平衡表显示以下余额：销售收入 $120 000（贷方），购货 $76 000（借方），2024 年 1 月 1 日存货 $8 000（借方），租金 $24 000（借方），工资 $18 000（借方），一般费用 $6 000（借方），设备成本 $30 000（借方），设备累计折旧 $4 000（贷方），应收账款 $12 000（借方），应付账款 $9 000（贷方），银行存款 $15 000（借方），提款 $5 000（借方），资本 $61 000（贷方）。年末需做以下调整：期末存货价值 $10 000；设备按成本的 20% 计提年折旧；预付租金 $2 000；应付未付工资 $3 000；需核销坏账 $500。
Before making any adjustments, verify that the trial balance agrees. Total debits equal $194 000 and total credits also equal $194 000, confirming that the ledger is arithmetically correct. Understanding the given data and identifying the adjustments are the first crucial steps in any case study question.
在进行任何调整之前，先验证试算平衡表是否平衡。借方总额等于 $194 000，贷方总额也等于 $194 000，确认分类账在算术上是正确的。理解给出的数据并识别出调整事项，是解答任何案例分析题的第一步关键动作。
2. Analysing Adjustments and Preparing Journal Entries | 分析调整并编制日记账分录
Each adjustment must be recorded through a general journal entry before being posted to the ledger. The first adjustment is closing inventory. In the inventory account, we record the closing inventory as an asset and reduce the cost of sales. The journal entry is: Debit Inventory $10 000, Credit Income Statement $10 000.
每一笔调整都需要通过普通日记账分录记录，再过账到分类账。第一项调整是期末存货。在存货账户中，我们记录期末存货为资产，并减少销售成本。日记账分录为：借记存货 $10 000，贷记利润表 $10 000。
Depreciation on equipment is calculated as 20% × $30 000 = $6 000. The entry increases the expense and the accumulated depreciation: Debit Depreciation Expense $6 000, Credit Accumulated Depreciation – Equipment $6 000. After this, the total accumulated depreciation becomes $4 000 + $6 000 = $10 000.
设备折旧的计算为 20% × $30 000 = $6 000。该分录增加费用和累计折旧：借记折旧费用 $6 000，贷记设备累计折旧 $6 000。此后，累计折旧总额变为 $4 000 + $6 000 = $10 000。
For the rent prepayment, the expense account currently holds $24 000, but only $22 000 relates to this year. Therefore we must transfer the prepaid amount to an asset account: Debit Prepaid Rent $2 000, Credit Rent $2 000. The rent expense for the year becomes $22 000.
对于预付租金，费用账户目前有 $24 000，但只有 $22 000 属于本年。因此我们必须将预付部分转入资产账户：借记预付租金 $2 000，贷记租金 $2 000。本年租金费用变为 $22 000。
The wages accrual increases both the expense and the current liability: Debit Wages $3 000, Credit Wages Payable $3 000. As a result, the total wages expense for the year is $18 000 + $3 000 = $21 000.
应计工资同时增加费用和流动负债：借记工资 $3 000，贷记应付工资 $3 000。因此，本年度工资费用总额为 $18 000 + $3 000 = $21 000。
Writing off the bad debt removes the uncollectible receivable and creates an expense: Debit Bad Debts Expense $500, Credit Trade Receivables $500. The net trade receivables now stand at $12 000 – $500 = $11 500.
核销坏账会移除无法收回的应收款并产生一项费用：借记坏账费用 $500，贷记应收账款 $500。应收账款净额现在变为 $12 000 – $500 = $11 500。
3. Posting to the Ledger and Balancing Off | 过账到分类账并结账
After the journal entries have been recorded, each adjustment is posted to the relevant ledger accounts. For example, the Rent Account initially carried a debit balance of $24 000. We then credit the account with $2 000 for the prepayment, leaving a debit balance of $22 000. This $22 000 is transferred to the Income Statement as an expense, and the Rent Account is balanced off with a zero balance. The opposite entry goes to the Prepaid Rent account, which shows a debit balance of $2 000 to be carried down as an asset.
日记账分录记录后，每项调整都会过账到相关的分类账户。例如，租金账户最初有借方余额 $24 000。然后我们贷记该账户 $2 000 作为预付，留下借方余额 $22 000。这笔 $22 000 被结转到利润表作为费用，租金账户结平为零余额。对端的分录进入预付租金账户，该账户显示借方余额 $2 000，作为资产结转下期。
Similarly, the Wages Account receives an additional debit of $3 000 from the accrual, making the total debit $21 000. This total is then transferred to the Income Statement. The Wages Payable account is credited $3 000 and shows a credit balance to be carried down as a current liability. All revenue and expense accounts are closed off to the Income Statement, while asset, liability and capital accounts are balanced and their closing balances brought down.
同理，工资账户从应计事项中额外借记 $3 000，使借方总额达到 $21 000。这个总额随后被结转到利润表。应付工资账户贷记 $3 000，并显示贷方余额作为流动负债结转下期。所有收入和费用账户都结转到利润表，而资产、负债和资本账户则结清并移下期末余额。
4. The Adjusted Trial Balance | 调整后试算平衡表
To confirm that all adjustments have been processed correctly, we prepare an adjusted trial balance. The adjusted trial balance incorporates all the changes from the journal entries. Total debits and credits must still be equal. Here is a summary of the key adjusted balances (in $): Inventory (asset) 10 000 Dr; Trade Receivables 11 500 Dr; Prepaid Rent 2 000 Dr; Cash at Bank 15 000 Dr; Equipment 30 000 Dr; Accumulated Depreciation 10 000 Cr; Trade Payables 9 000 Cr; Wages Payable 3 000 Cr; Capital 61 000 Cr; Drawings 5 000 Dr; Sales Revenue 120 000 Cr; Purchases 76 000 Dr; Opening Inventory (will be used in cost of sales) 8 000 Dr; Rent 22 000 Dr; Wages 21 000 Dr; General Expenses 6 000 Dr; Depreciation 6 000 Dr; Bad Debts 500 Dr; and the Income Statement account will absorb the expense and revenue totals. The adjusted trial balance confirms that the total debits equal total credits at $217 000.
为了确认所有调整都已正确处理，我们编制调整后试算平衡表。调整后试算平衡表包含了日记账分录带来的所有变化。借方和贷方总额必须仍然相等。以下是主要调整后余额的汇总（单位：$）：存货（资产）10 000 借方；应收账款 11 500 借方；预付租金 2 000 借方；银行存款 15 000 借方；设备 30 000 借方；累计折旧 10 000 贷方；应付账款 9 000 贷方；应付工资 3 000 贷方；资本 61 000 贷方；提款 5 000 借方；销售收入 120 000 贷方；购货 76 000 借方；期初存货（将用于销售成本计算）8 000 借方；租金 22 000 借方；工资 21 000 借方；一般费用 6 000 借方；折旧 6 000 借方；坏账 500 借方；利润表账户将汇总所有费用和收入总额。调整后试算平衡表确认借方和贷方总额均为 $217 000，保持平衡。
5. Drafting the Income Statement | 编制利润表
The income statement for the year ended 31 December 2024 starts with sales revenue of $120 000. The cost of sales is calculated as: Opening Inventory $8 000 + Purchases $76 000 – Closing Inventory $10 000 = $74 000. Therefore, gross profit is $120 000 – $74 000 = $46 000. From the gross profit, we deduct total operating expenses: Rent $22 000, Wages $21 000, General Expenses $6 000, Depreciation $6 000, and Bad Debts $500, which sum to $55 500. The result is a net loss of $46 000 – $55 500 = $(9 500).
截至 2024 年 12 月 31 日的年度利润表从销售收入 $120 000 开始。销售成本计算为：期初存货 $8 000 + 购货 $76 000 – 期末存货 $10 000 = $74 000。因此，毛利为 $120 000 – $74 000 = $46 000。从毛利中，我们扣除总营业费用：租金 $22 000、工资 $21 000、一般费用 $6 000、折旧 $6 000 和坏账 $500，合计 $55 500。最终结果为净亏损 $46 000 – $55 500 = $(9 500)。
Notice that although the business generated a healthy gross profit, high operating expenses pushed it into a loss. This highlights the importance of monitoring both cost of sales and overheads. The closing inventory adjustment directly reduced the cost of sales and improved the gross profit figure.
请注意，尽管企业产生了不错的毛利，但较高的营业费用使其陷入亏损。这凸显了同时监控销售成本和间接费用的重要性。期末存货调整直接减少了销售成本，改善了毛利数字。
6. Constructing the Statement of Financial Position | 编制资产负债表
The statement of financial position as at 31 December 2024 presents the assets, liabilities, and capital. Non-current assets: Equipment at carrying amount $30 000 – $10 000 = $20 000. Current assets: Inventory $10 000, Trade Receivables $11 500, Prepaid Rent $2 000, Cash at Bank $15 000, giving total current assets of $38 500. Total assets equal $20 000 + $38 500 = $58 500.
截至 2024 年 12 月 31 日的资产负债表列示了资产、负债和资本。非流动资产：设备账面价值 $30 000 – $10 000 = $20 000。流动资产：存货 $10 000、应收账款 $11 500、预付租金 $2 000、银行存款 $15 000，流动资产合计 $38 500。总资产为 $20 000 + $38 500 = $58 500。
On the equity and liabilities side, we start with the opening capital of $61 000, subtract the net loss of $9 500 and drawings of $5 000, leaving a closing capital of $46 500. Current liabilities consist of Trade Payables $9 000 and Wages Payable $3 000, totalling $12 000. Total equity and liabilities are $46 500 + $12 000 = $58 500, which matches total assets perfectly.
在权益与负债一侧，我们从期初资本 $61 000 开始，减去净亏损 $9 500 和提款 $5 000，得出期末资本 $46 500。流动负债包括应付账款 $9 000 和应付工资 $3 000，合计 $12 000。权益与负债总额为 $46 500 + $12 000 = $58 500，与总资产完全吻合。
7. Calculating and Interpreting Key Ratios | 计算与解读关键比率
Ratio analysis helps evaluate the business’s profitability and liquidity. The gross profit margin is:
Gross Profit Margin = (Gross Profit ÷ Sales Revenue) × 100% = ($46 000 ÷ $120 000) × 100% = 38.33%
比率分析有助于评估企业的盈利能力和流动性。毛利率为：
毛利率 = (毛利 ÷ 销售收入) × 100% = ($46 000 ÷ $120 000) × 100% = 38.33%
A gross margin of 38.33% indicates that for every dollar of sales, the business retains about $0.383 after covering the cost of the goods sold. This is relatively strong and suggests effective pricing or cost control on purchases. However, the net profit margin tells a different story:
Net Profit Margin = (Net Profit ÷ Sales Revenue) × 100% = (-$9 500 ÷ $120 000) × 100% = -7.92%
38.33% 的毛利率表明，每实现一美元销售收入，在覆盖所售商品的成本后企业能保留约 $0.383。这一比率相对较好，说明定价或购货成本控制较为有效。然而，净利润率却讲述了另一番景象：
净利润率 = (净利润 ÷ 销售收入) × 100% = (-$9 500 ÷ $120 000) × 100% = -7.92%
The negative net margin highlights that operating expenses consumed more than the gross profit, leading to a loss. The owner must scrutinise wages, rent, and other overheads. On the liquidity side, the current ratio is:
Current Ratio = Current Assets ÷ Current Liabilities = $38 500 ÷ $12 000 = 3.21 : 1
负的净利润率突出表明营业费用吞噬了毛利，导致亏损。企业主必须仔细审查工资、租金和其他间接费用。在流动性方面，流动比率为：
流动比率 = 流动资产 ÷ 流动负债 = $
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