📚 AS WJEC Accounting: Case Study Practice and Analysis | AS WJEC 会计：案例分析实战演练
Case study questions are a cornerstone of the WJEC AS Accounting examination. They test not only your ability to record transactions but also your skill in analysing financial information and making reasoned judgements. This article walks you through a realistic case study, from initial transaction identification to final ratio interpretation, so you can approach your exam with confidence. We will follow Green's Grocery, a sole trader business, and apply core AS accounting principles step by step.
案例分析题是 WJEC AS 会计考试的核心内容。它不仅考察你记录交易的能力，更考验你分析财务信息并作出合理判断的技巧。本文将通过一个真实的案例，带你从最初的交易识别走到最终的比率解读，让你自信应对考试。我们将以独资企业 Green's Grocery 为例，逐步应用 AS 会计核心原则。
1. Understanding the Case Scenario | 理解案例背景
Jane Green started Green's Grocery on 1 January 2023, selling organic food. She invested £30,000 of her own cash and transferred a delivery van worth £10,000 into the business. The shop is rented at £800 per month, and she paid three months' rent in advance on 1 January. During January, she purchased inventory on credit for £15,000, made cash sales of £10,000 and credit sales of £15,000. She paid electricity of £500 and wages of £2,000. Closing inventory was valued at £4,000. The van is to be depreciated at 10% per annum on cost, with no residual value. A provision for doubtful debts is to be created at 5% of trade receivables. You are required to prepare the income statement for January and the statement of financial position as at 31 January 2023, together with relevant ratio calculations.
简·格林于 2023 年 1 月 1 日创立了 Green's Grocery，经营有机食品。她投入自有现金 £30,000，并将一辆价值 £10,000 的送货货车转入企业。店面月租金 £800，她于 1 月 1 日预付了三个月租金。1 月份，她赊购了 £15,000 的存货，实现现金销售 £10,000、赊销 £15,000。她支付了电费 £500 和工资 £2,000。期末存货估值为 £4,000。货车按成本的 10% 计提折旧，无残值。按应收账款的 5% 计提坏账准备。你需要编制 1 月份的损益表和 2023 年 1 月 31 日的财务状况表，并计算相关比率。
2. Identifying and Classifying Transactions | 识别与分类交易
The first task in any case study is to parse the narrative and list every economic event. Jane's capital contribution increases cash and introduces a non-current asset (van). The rent payment creates a prepayment because it covers future months. Inventory purchases on credit raise both purchases and trade payables. Sales split into cash and credit streams. Expenses paid in cash reduce the bank balance. Closing inventory must be accounted for at the period end.
任何案例分析的首要任务都是解析题干，列出每一个经济事件。简的资本投入增加了现金并引入了一项非流动资产（货车）。租金支付因涵盖未来月份而形成预付费用。赊购存货同时增加采购额和应付账款。销售分为现金和赊销两类。用现金支付的费用减少了银行存款余额。期末存货需要在期末进行调整。
For Green's Grocery, the key transactions are: capital injection £40,000 (£30,000 cash + £10,000 van); prepaid rent £2,400 (3 × £800); credit purchases £15,000; cash sales £10,000; credit sales £15,000; electricity £500; wages £2,000; and closing inventory £4,000. The depreciation charge is £1,000 (10% × £10,000) and the provision for doubtful debts is £750 (5% × £15,000 trade receivables).
对 Green's Grocery 而言，关键交易包括：资本投入 £40,000（£30,000 现金 + £10,000 货车）；预付租金 £2,400（3 × £800）；赊购 £15,000；现金销售 £10,000；赊销 £15,000；电费 £500；工资 £2,000；期末存货 £4,000。折旧费用为 £1,000（10% × £10,000），坏账准备为 £750（应收账款 £15,000 的 5%）。
3. Recording Journal Entries and Ledger Accounts | 记录日记账与分类账
While the exam may not always require full journals, understanding the double-entry is essential. The capital introduced: debit Bank £30,000, debit Van £10,000, credit Capital £40,000. Prepaid rent: debit Prepaid Rent £2,400, credit Bank £2,400. Credit purchases: debit Purchases £15,000, credit Trade Payables £15,000. Cash sales: debit Bank £10,000, credit Sales £10,000. Credit sales: debit Trade Receivables £15,000, credit Sales £15,000. Electricity: debit Electricity Expense £500, credit Bank £500. Wages: debit Wages Expense £2,000, credit Bank £2,000.
虽然考试不一定要求写出完整的日记账分录，但理解复式记账至关重要。资本投入：借记银行存款 £30,000，借记货车 £10,000，贷记资本 £40,000。预付租金：借记预付租金 £2,400，贷记银行存款 £2,400。赊购：借记采购 £15,000，贷记应付账款 £15,000。现金销售：借记银行存款 £10,000，贷记销售收入 £10,000。赊销：借记应收账款 £15,000，贷记销售收入 £15,000。电费：借记电费 £500，贷记银行存款 £500。工资：借记工资费用 £2,000，贷记银行存款 £2,000。
At the month end, closing inventory adjustment: debit Closing Inventory (asset) £4,000, credit Purchases (or Trading Account) £4,000 via the cost of sales calculation. Depreciation: debit Depreciation Expense £1,000, credit Accumulated Depreciation £1,000. Provision for doubtful debts: debit Irrecoverable Debts Expense £750, credit Provision for Doubtful Debts £750. Rent adjustment: the rent expense for January is £800, so debit Rent Expense £800, credit Prepaid Rent £800, reducing the prepayment to £1,600.
月末，期末存货调整：借记期末存货（资产）£4,000，通过销售成本计算贷记采购（或 Trading Account）£4,000。折旧：借记折旧费用 £1,000，贷记累计折旧 £1,000。坏账准备：借记坏账费用 £750，贷记坏账准备 £750。租金调整：1 月份租金费用为 £800，因此借记租金费用 £800，贷记预付租金 £800，将预付款减至 £1,600。
4. Adjusting for Accruals and Prepayments | 调整应计与预付项目
Accruals and prepayments ensure that expenses are matched to the period they relate to. Green's Grocery paid £2,400 for three months' rent on 1 January, so only £800 should be charged to January's income statement. The remaining £1,600 is a current asset shown in the statement of financial position. There are no accruals in this scenario, but if Jane had received an electricity bill for January still unpaid, we would debit Electricity Expense and credit Accruals.
应计和预付项目确保费用与所属期间配比。Green's Grocery 于 1 月 1 日支付了三个月租金 £2,400，因此仅 £800 应计入 1 月份的损益表。剩余 £1,600 列为财务状况表中的流动资产。本案例中没有应计项目，但如果简收到一张仍未支付的 1 月份电费账单，我们应借记电费费用，贷记应计费用。
In WJEC exams, prepayments are often tested with rent or insurance. Remember the double-entry: prepayment is an asset account; at the period end, transfer the expired portion to the expense account. Always check the dates: if a payment covers six months starting from December, only one month is prepaid at the year end of December.
在 WJEC 考试中，预付项目常通过租金或保险费来考察。请记住复式记账规则：预付账款是一个资产账户；期末，将已到期部分转入费用账户。务必核对日期：若一笔付款覆盖从 12 月开始的六个月，那么 12 月末只预付了一个月。
5. Depreciation Methods and Calculations | 折旧方法及计算
The van is depreciated on a straight-line basis at 10% per annum on cost. For one month, the depreciation is £10,000 × 10% × 1/12 = £ nthly income statement and the depreciation for January is calculated as one-twelfth of the annual charge. However, to keep numbers rounded, you may round to the nearest pound; I will use £ nt should follow the instructions. In this walkthrough, I will keep annual depreciation of £1,000 for the full year, and assuming the question only asks for January's statements, it is acceptable to show a full month's charge of £83. Yet many WJEC AS tasks provide annual data, so adapt accordingly. I will stick to £1,000 as a simplified annual figure for the purpose of demonstrating the ledger.
货车按成本的 10% 直线法计提折旧。一个月折旧额为 £10,000 × 10% × 1/12 = £83.33，但在 AS 案例分析中，许多题目使用全年数据或要求计算年度费用。在本例中，我们假定企业编制月度损益表，1 月份折旧按年度费用的十二分之一计算。为保持数字简洁，可取整至最近的英镑；我将使用 £83 进行说明，但精确处理应遵循题目要求。在此演练中，我保留全年折旧 £1,000，并假设题目仅要求 1 月报表，显示整月费用 £83 亦可。不过许多 WJEC AS 题目提供年度数据，请相应调整。为演示分类账，我仍使用简化的年度数字 £1,000。
tatement of financial position as cost less accumulated depreciation. For January, the van's NBV would be £10,000 − £83 = £9,917. If you use £1,000 for the year, the NBV at 31 January is still £9,000 for a year-end statement. Always read the dates in the question carefully.
累计折旧记在贷方，账面净值（NBV）在财务状况表中以成本减累计折旧列示。就 1 月而言，货车的 NBV 为 £10,000 − £83 = £9,917。若使用全年 £1,000，那么在年末报表中 1 月 31 日的 NBV 仍为 £9,000。务必仔细阅读题目中的日期。
6. Preparing the Trial Balance | 编制试算平衡表
l balance lists all ledger balances to check the equality of debits and credits. For Green's Grocery, before period-end adjustments, the balances would be: Bank £35,100 (30,000 + 10,000 − 2,400 − 500 − 2,000); Van £10,000; Prepaid Rent £2,400; Purchases £15,000; Trade Payables £15,000; Sales £25,000; Trade Receivables £15,000; Electricity £500; Wages £2,000; Capital £40,000. Total debits = 35,100 + 10,000 + 2,400 + 15,000 + 15,000 + 500 + 2,000 = £80,000; total credits = 15,000 + 25,000 + 40,000 = £80,000. The trial balance agrees.
试算平衡表列示所有分类账余额，以检查借贷是否相等。对 Green's Grocery 而言，期末调整前的余额为：银行存款 £35,100（30,000 + 10,000 − 2,400 − 500 − 2,000）；货车 £10,000；预付租金 £2,400；采购 £15,000；应付账款 £15,000；销售收入 £25,000；应收账款 £15,000；电费 £500；工资 £2,000；资本 £40,000。借方合计 = 35,100 + 10,000 + 2,400 + 15,000 + 15,000 + 500 + 2,000 = £80,000；贷方合计 = 15,000 + 25,000 + 40,000 = £80,000。试算平衡。
After adjustments, we add closing inventory, depreciation, provision for doubtful debts, and the rent transfer. A revised trial balance can then be used to draft the financial statements. In exams, you are usually asked to prepare an income statement and statement of financial position directly from the narrative and adjustments, without a full trial balance, but knowing the underlying balances helps avoid errors.
调整之后，我们加入期末存货、折旧、坏账准备以及租金结转。然后可用修正后的试算平衡表草拟财务报表。考试中通常要求直接从题干和调整事项编制损益表与财务状况表，无需完整的试算平衡表，但清楚各账户余额有助于避免差错。
7. Constructing the Income Statement | 编制损益表
month ending 31 January 2023 can be built in stages. Start with the trading account: Sales £25,000 less Cost of Sales. Cost of Sales = Opening Inventory £0 + Purchases £15,000 − Closing Inventory £4,000 = £11,000. Gross Profit = £25,000 − £11,000 = £14,000.
截至 2023 年 1 月 31 日的月度损益表可分阶段编制。从交易账户开始：销售收入 £25,000 减去销售成本。销售成本 = 期初存货 £0 + 采购 £15,000 − 期末存货 £4,000 = £11,000。毛利 = £25,000 − £11,000 = £14,000。
Next, deduct expenses: Rent £800, Electricity £500, Wages £2,000, Depreciation £83 (or £1,000 if annualised), Irrecoverable Debts Expense (provision) £750. Total expenses = £800 + £500 + £2,000 + £83 + £750 = £4,133. Net Profit = £14,000 − £4,133 = £9,867. (If using £1,000 depreciation, net profit becomes £14,000 − £5,050 = £8,950.) For consistency with monthly reporting, I will use the monthly depreciation of £83, yielding a net profit of £9,867. The business does not have any other income.
接下来，扣除各项费用：租金 £800、电费 £500、工资 £2,000、折旧 £83（若按年化则为 £1,000）、坏账费用（准备）£750。费用合计 = £800 + £500 + £2,000 + £83 + £750 = £4,133。净利润 = £14,000 − £4,133 = £9,867。（若使用 £1,000 折旧，净利润变为 £14,000 − £5,050 = £8,950。）为与月度报告保持一致，我将采用月度折旧 £83，得出净利润 £9,867。该企业无其他收益。
Gross Profit Margin = (£14,000 ÷ £25,000) × 100% = 56%
Net Profit Margin = (£9,867 ÷ £25,000) × 100% = 39.47%
8. Building the Statement of Financial Position | 编制资产负债表
n as at 31 January 2023 lists assets, liabilities and equity. Non-current assets: Van cost £10,000 less accumulated depreciation £83, giving NBV £9,917. Current assets: Closing Inventory £4,000, Trade Receivables £15,000 less Provision for Doubtful Debts £750 = £14,250, Prepaid Rent £1,600, Bank £35,100. Total current assets = £4,000 + £14,250 + £1,600 + £35,100 = £54,950. Current liabilities: Trade Payables £15,000. There are no accruals or other payables. Net current assets = £54,950 − £15,000 = £39,950. Total net assets = £9,917 + £39,950 = £49,867.
2023 年 1 月 31 日的财务状况表列示资产、负债和权益。非流动资产：货车成本 £10,000 减累计折旧 £83，账面净值 £9,917。流动资产：期末存货 £4,000，应收账款 £15,000 减坏账准备 £750 = £14,250，预付租金 £1,600，银行存款 £35,100。流动资产合计 = £4,000 + £14,250 + £1,600 + £35,100 = £54,950。流动负债：应付账款 £15,000。无应计或其他应付款。净流动资产 = £54,950 − £15,000 = £39,950。净资产合计 = £9,917 + £39,950 = £49,867。
Financed by: Capital introduced £40,000 plus Net Profit for the month £9,867 = £49,867. No drawings were made, so the closing capital equals £49,867. The statement balances perfectly.
资金来源：投入资本 £40,000 加本月净利润 £9,867 = £49,867。没有提款，因此期末资本为 £49,867。该表完全平衡。
Using annual depreciation of £1,000, the NBV would be £9,000 and net profit £8,950, giving closing capital £48,950. The choice depends on the time frame specified. Always follow the period stated in the question.
若使用年度折旧 £1,000，NBV 将为 £9,000，净利润为 £8,950，期末资本为 £48,950。选择取决于所给时间范围。务必遵循题目说明的期间。
9. Ratio Analysis for Performance Evaluation | 比率分析评估绩效
WJEC AS requires candidates to calculate and interpret ratios. For Green's Grocery, we can compute profitability and liquidity ratios. Gross profit margin: 56% indicates strong mark-up on organic produce. Net profit margin: 39.47% penses. Return on capital employed (ROCE) for the month: (Net Profit / Capital Employed) = £9,867 / £40,000 = 24.67% per month, though this is not annualised; be cautious with short periods.
WJEC AS 要求考生计算并解读各种比率。对于 Green's Grocery，我们可以计算盈利能力和流动性比率。毛利率：56% 表明有机产品有较高的加成。净利率：39.47% 显示费用控制后盈利相当健康。本月资本回报率（ROCE）：净利润 / 占用资本 = £9,867 / £40,000 = 每月 24.67％，但此数据未年化；对短期间需谨慎处理。
Liquidity: Current ratio = Current Assets / Current Liabilities = £54,950 / £ 3.66 : 1. Quick ratio (acid test) = (Current Assets − Inventory) / Current Liabilities = (£54,950 − £4,000) / £ rt-term solvency. Trade receivable days = (Trade Receivables / Credit Sales) × 30 days = (£15,000 / £15,000) × 30 = 30 days. Payable days = (Trade Payables / Credit Purchases) × 30 = (£15,000 / £15,000) × 30 = 30 days. The business is collecting and paying in exactly one month.
流动性：流动比率 = 流动资产 / 流动负债 = £54,950 / £15,000 = 3.66 : 1。速动比率（酸性测试）=（流动资产 − 存货）/ 流动负债 =（£54,950 − £4,000）/ £15,000 = 3.40 : 1。两个比率均显示极佳的短期偿债能力。贸易应收账款周转天数 =（应收账款 / 赊销额）× 30 天 =（£15,000 / £15,000）× 30 = 30 天。应付账款周转天数 =（应付账款 / 赊购额）× 30 =（£15,000 / £15,000）× 30 = 30 天。企业收付款周期恰好为一个月。
10. Interpreting Results and Making Recommendations | 解释结果并提出建议
The high gross margin suggests Jane has strong pricing power, but she should monitor supplier price changes and competitor actions. The liquidity ratios above 2:1 provide a comfortable buffer, but she might be holding too much cash that could be invested or used to expand. The debt collection period of 30 days is acceptable, but she could offer early settlement discounts to improve cash flow. Since payable days also equal 30 days, she is paying suppliers on time, which maintains good relationships.
高毛利率表明简具有很强的定价能力，但她应关注供应商价格变动及竞争对手动态。流动性比率超过 2:1 提供了充裕的缓冲，但她可能持有过多现金，这些现金可用于投资或扩张。30 天的应收账款回收期可以接受，但她可以提供提前付款折扣以改善现金流。应付账款天数同为 30 天，说明她按时支付供应商货款，有利于维持良好关系。
For exam success, always link ratios back to the business context. If the scenario mentioned that the industry average gross margin is 40%, Green's 56% is a competitive advantage worth highlighting. If an owner plans to expand, strong liquidity supports that. In a case study, you must not merely calculate but also explain what each ratio means for the business's future.
要想在考试中脱颖而出，必须将比率与企业背景联系起来。若案例提及行业平均毛利率为 40%，Green's 的 56% 即是一项值得强调的竞争优势。若业主计划扩张，强劲的流动性则能提供支持。在案例分析中，你不仅需要计算，还必须解释每个比率对企业未来的意义。
11. Common Pitfalls and Exam Tips | 常见错误与考试技巧
One frequent mistake is mishandling prepayments and accruals. Always ask yourself: "Has the expense been consumed during the accounting period?" If a payment covers six months but only two months have passed, four months remain as a prepayment. Another pitfall is forgetting to adjust closing inventory in both cost of sales and the statement of financial position. Ensure opening inventory plus purchases minus closing inventory gives the correct cost of sales.
一个常见错误是预付和应计项目处理不当。务必自问：“该费用在会计期间内是否已消耗？”若一笔付款覆盖六个月而仅过去两个月，则剩余四个月应作为预付项目。另一个易错点是忘记在销售成本及财务状况表中调整期末存货。务必确保期初存货加采购减期末存货得出正确的销售成本。
When presenting financial statements, use proper headings and formats as per the WJEC specification. For a sole trader, the income statement typically shows sales, cost of sales, gross profit, expenses list, and net profit. The statement of financial position follows the vertical format with net assets equalling capital. Show your workings clearly, and never mix up debit and credit sides of the trial balance.
在列报财务报表时，须按 WJEC 考纲使用恰当的标题和格式。对于独资企业，损益表通常列示销售收入、销售成本、毛利、费用清单及净利润。财务状况表采用垂直格式，净资产等于资本。清晰展示计算过程，切勿混淆试算平衡表的借贷方。
Finally, manage your time. Allocate roughly half to recording and adjusting, and half to ratio analysis and writing a conclusion. Read the case study twice: first for an overview, second to note every monetary figure and event. Underline dates and key terms like 'prepaid', 'accrued', 'depreciation method'.
最后，合理分配时间。大致用一半时间进行记录与调整，另一半用于比率分析及撰写结论。案例材料阅读两遍：第一遍通览全局，第二遍标注每个金额与事件。在诸如“预付”、“应计”、“折旧方法”等关键术语下划线。
12. Bringing It All Together – A Mock Mark Scheme Approach | 综合演练 – 模拟评分标准法
Imagine the case study is worth 30 marks. You might earn 8 marks for correct identification and journal entries, 10 marks for the income statement and statement of financial position, 6 marks for ratio calculation, and 6 marks for interpretation and recommendation. Each correct figure with proper labelling adds a mark. Examiners reward a logical layout and the use of standard accounting terminology.
假设该案例分析题值 30 分。你或许能因正确识别与编制分录获 8 分，损益表与财务状况表 10 分，比率计算 6 分，解释与建议 6 分。每个正确数字并附恰当标签都能得分。考官嘉奖条理清晰的版面及标准会计术语的使用。
To gain full marks, you must also answer the specific requirements – for instance, if asked to "evaluate the liquidity position", state whether it is satisfactory and give a reason linked to the ratio. Simply writing "current ratio is 3.66:1" only gains calculation marks; you must add "this indicates the business can meet its short-term debts comfortably".
要拿到满分，你还需要回应具体要求——例如，若要求“评价流动性状况”，应说明是否令人满意并给出与比率相关的理由。只写“流动比率为 3.66:1”仅能获得计算分数；你必须补充“这表明企业能够轻松偿还短期债务”。
Use the case details: the fact that Jane is a new business with no opening inventory, that she prepaid rent, and that she made both cash and credit sales. These features test your understanding of basic AS concepts. Practice with different scenarios to build speed and confidence.
利用案例细节：简是一家无期初存货的新企业，她预付了租金，且销售既有现金又有赊销。这些特征旨在考察你对 AS 基础概念的理解。通过不同场景进行练习，以提升速度与信心。
Published by TutorHao | Accounting Revision Series | aleveler.com
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