KS3 CIE Accounting: Case Study Practical Walkthrough | KS3 CIE 会计：案例分析实战演练

📚 KS3 CIE Accounting: Case Study Practical Walkthrough | KS3 CIE 会计：案例分析实战演练

This article presents a step-by-step accounting case study designed for KS3 CIE learners. Through a practical business scenario, you will apply the accounting cycle — from recording transactions to preparing financial statements. Working through this walkthrough will strengthen your understanding of key concepts such as double-entry, trial balance, profit calculation, and balance sheet presentation.

本文为 KS3 CIE 学习者设计了一个循序渐进的会计案例分析。通过一个实际的商业场景，你将应用从记录交易到编制财务报表的整个会计循环。完成本演练将巩固你对复式记账、试算平衡表、利润计算和资产负债表列报等关键概念的理解。

1. Case Background: Sophia’s Craft Shop | 案例背景：索菲亚的手工品商店

Sophia started a small craft shop on 1 January 2025. She invested £5,000 of her own savings into the business bank account. The shop sells handmade cards and decorative items. Sophia rents a small retail space for £400 per month, payable on the first day of each month. She also purchased shop fittings for £1,200 in cash and bought initial inventory worth £800 on credit from a supplier, Creative Supplies Ltd. To keep things simple, Sophia does not charge VAT on her sales. All sales are for cash, and she records transactions immediately in her accounting system.

索菲亚于 2025 年 1 月 1 日开办了一家小手工商店。她将个人储蓄 5,000 英镑投入企业银行账户。店铺出售手工贺卡和装饰品。索菲亚以每月 400 英镑的价格租用了一处小型零售空间，每月第一天支付。她还以现金购买了价值 1,200 英镑的店铺装置，并以赊购方式从供应商 Creative Supplies Ltd 购入价值 800 英镑的初始存货。为简化起见，索菲亚不对她的销售征收增值税。所有销售均为现金销售，她会在会计系统中立即记录交易。

2. Recording the Opening Journal Entries | 记录期初分录

The first step is to record the owner’s capital contribution. In the general journal, we debit the Bank account and credit the Capital account with £5,000. This reflects an increase in an asset (Bank) and an increase in owner’s equity (Capital). We also record the purchase of shop fittings: debit Shop Fittings £1,200, credit Bank £1,200. For the inventory purchased on credit, we debit Inventory £800 and credit Accounts Payable (Creative Supplies) £800.

第一步是记录业主的出资。在普通日记账中，我们借记银行账户、贷记资本账户 5,000 英镑。这反映了资产（银行）的增加和所有者权益（资本）的增加。我们还要记录店铺装置的购买：借记店铺装置 1,200 英镑，贷记银行 1,200 英镑。对于赊购的存货，借记存货 800 英镑，贷记应付账款（Creative Supplies）800 英镑。

Journal entries provide a chronological record of all business transactions. Each entry must include the date, accounts affected, amounts, and a brief narration. In Sophia’s case, the narration for the capital entry would be ‘Owner introduced capital into business’.

日记账分录提供了所有商业交易的时间顺序记录。每条分录必须包含日期、受影响的账户、金额和简要说明。在索菲亚的案例中，资本分录的说明为“业主向企业投入资本”。

• 1 Jan: Bank £5,000 (Dr), Capital £5,000 (Cr) — 1 月 1 日：银行 5,000 英镑（借），资本 5,000 英镑（贷）
• 1 Jan: Shop Fittings £1,200 (Dr), Bank £1,200 (Cr) — 1 月 1 日：店铺装置 1,200 英镑（借），银行 1,200 英镑（贷）
• 2 Jan: Inventory £800 (Dr), Accounts Payable £800 (Cr) — 1 月 2 日：存货 800 英镑（借），应付账款 800 英镑（贷）

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3. Posting to the General Ledger | 过账至总分类账

After recording journal entries, each transaction is posted to the relevant ledger accounts. The Bank ledger will show an opening debit of £5,000, then a credit of £1,200 for the fittings purchase. The Capital account has a credit balance of £5,000. The Shop Fittings account shows a debit balance of £1,200. Inventory has a debit of £800, and Accounts Payable a credit of £800. Ledger accounts use T-account format for clarity, with debits on the left and credits on the right.

记录日记账分录后，每笔交易都会过账至相应的分类账账户。银行分类账将显示期初借方 5,000 英镑，然后因购买装置而贷方 1,200 英镑。资本账户有贷方余额 5,000 英镑。店铺装置账户显示借方余额 1,200 英镑。存货有借方 800 英镑，应付账款有贷方 800 英镑。分类账账户采用 T 形账户格式以保持清晰，左边为借方，右边为贷方。

We must also remember that Sophia paid rent on 1 January. The journal entry is: debit Rent Expense £400, credit Bank £400. This reduces the bank balance further. After posting, the Bank ledger balance is £5,000 – £1,200 – £400 = £3,400.

我们还必须记住索菲亚在 1 月 1 日支付了租金。日记账分录为：借记租金费用 400 英镑，贷记银行 400 英镑。这进一步减少了银行余额。过账后，银行分类账余额为 5,000 – 1,200 – 400 = 3,400 英镑。

Throughout January, Sophia made cash sales totalling £3,200. For each sale, we debit Bank and credit Sales Revenue. The total sales are posted as a lump sum, or daily, depending on the accounting system. By the end of January, the Bank account receives debits of £3,200, bringing the balance to £3,400 + £3,200 = £6,600 before any other payments.

在整个 1 月份，索菲亚的现金销售总额为 3,200 英镑。每笔销售我们借记银行并贷记销售收入。根据会计系统的不同，销售总额可以汇总过账或每日过账。到 1 月底，银行账户收到借方 3,200 英镑，使余额在发生其他付款前变为 3,400 + 3,200 = 6,600 英镑。

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4. Recording Expenses and Payments | 记录费用与付款

During the month, Sophia paid £150 for advertising leaflets (cash), and £60 for stationery. These are recorded as debit Advertising Expense, debit Stationery Expense, and credit Bank. She also paid £400 to Creative Supplies Ltd against the outstanding invoice. This reduces Accounts Payable and Bank by £400. The Accounts Payable balance becomes £800 – £400 = £400, and Bank drops by £150 + £60 + £400 = £610, making the running Bank balance £6,600 – £610 = £5,990.

在这个月，索菲亚支付了 150 英镑的广告传单费（现金）和 60 英镑的文具费。这些记录为借记广告费用、借记文具费用，贷记银行。她还向 Creative Supplies Ltd 支付了 400 英镑以结清部分发票。这使得应付账款和银行同时减少 400 英镑。应付账款余额变为 800 – 400 = 400 英镑，银行余额因 150 + 60 + 400 = 610 英镑的减少而变为 6,600 – 610 = 5,990 英镑。

At the end of January, Sophia also withdrew £500 for personal use. Drawings are recorded by debiting Drawings and crediting Bank. After this transaction, the Bank balance is £5,990 – £500 = £5,490.

1 月底，索菲亚还提取了 500 英镑供个人使用。提款通过借记提款账户、贷记银行账户来记录。此交易后，银行余额为 5,990 – 500 = 5,490 英镑。

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5. Adjusting Entries: Accruals and Prepayments | 调整分录：应计与预付款项

Before preparing the trial balance and financial statements, we need to consider any adjusting entries. Sophia pays rent monthly, but what if she had prepaid or accrued any expenses? In this case, she paid January rent on 1 January, so there is no accrual. However, let us assume she received an electricity bill for January on 2 February for £90. Under the accruals concept, we must recognize the expense in January. The adjusting entry is: debit Electricity Expense £90, credit Accrued Expenses (a liability) £90.

在编制试算平衡表和财务报表之前，我们需要考虑所有调整分录。索菲亚每月支付租金，但如果她有预付或应计费用呢？在本案例中，她于 1 月 1 日支付了 1 月的租金，因此没有应计。但是，让我们假设她在 2 月 2 日收到了 1 月的电费账单，金额为 90 英镑。根据应计概念，我们必须在 1 月确认这笔费用。调整分录为：借记电费 90 英镑，贷记应计费用（一项负债）90 英镑。

She also had a prepayment: on 2 January she paid £240 for a one-year insurance policy starting 1 January. The whole amount was initially debited to Insurance Expense. At the month-end, only one month (1/12) has expired. The prepaid portion is 11/12 × £240 = £220. We need to adjust by debiting Prepaid Insurance (an asset) and crediting Insurance Expense by £220. After this, the Insurance Expense for January reflects the correct £20.

她还预付款项：1 月 2 日，她为一份自 1 月 1 日起生效的一年期保险单支付了 240 英镑。初始时整笔金额借记了保险费用。在月末，只有一个月（1/12）已到期。预付部分为 11/12 × 240 = 220 英镑。我们需要通过借记预付保险费（资产）并贷记保险费用 220 英镑进行调整。调整后，1 月份的保险费用正确反映了 20 英镑。

• Accrual: Dr Electricity £90, Cr Accrued Expenses £90 — 应计：借：电费 90 英镑，贷：应计费用 90 英镑
• Prepayment: Dr Prepaid Insurance £220, Cr Insurance Expense £220 — 预付款：借：预付保险费 220 英镑，贷：保险费用 220 英镑

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6. Depreciation of Shop Fittings | 店铺装置的折旧

Shop fittings are a non-current asset and must be depreciated. Sophia estimates the fittings have a useful life of 5 years with no residual value. Using the straight-line method, annual depreciation is £1,200 ÷ 5 = £240 per year, or £20 per month. The adjusting entry for January is: debit Depreciation Expense £20, credit Accumulated Depreciation (a contra-asset account) £20. This reduces the net book value of Shop Fittings to £1,200 – £20 = £1,180.

店铺装置是一项非流动资产，必须计提折旧。索菲亚估计该装置的使用寿命为 5 年，无残值。采用直线法，年折旧额为 1,200 ÷ 5 = 240 英镑/年，即每月 20 英镑。1 月份的调整分录为：借记折旧费用 20 英镑，贷记累计折旧（资产抵减账户）20 英镑。这使得店铺装置的净账面价值降至 1,200 – 20 = 1,180 英镑。

Depreciation matches the cost of the asset to the periods that benefit from its use. Without this adjustment, profit would be overstated and the asset value on the balance sheet would be misleading.

折旧将资产成本与受益期相匹配。如果不进行此调整，利润将被高估，资产负债表上的资产价值也会产生误导。

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7. Closing Inventory and Cost of Sales | 期末存货与销售成本

At the end of January, Sophia counted the remaining inventory. The closing inventory is valued at £300 (lower of cost and net realizable value). She started with £800 of inventory. The cost of sales is calculated as: Opening Inventory £800 + Purchases £0 (no additional purchases in January) – Closing Inventory £300 = £500. Note that the initial purchase of £800 was the opening inventory. The adjusting entry is: debit Cost of Sales £800, credit Inventory £800 (to transfer opening inventory to cost of sales), then debit Inventory £300, credit Cost of Sales £300 (to record closing inventory). After these, the Inventory account shows £300, and the Cost of Sales total is £500.

在 1 月底，索菲亚清点了剩余存货。期末存货价值为 300 英镑（采用成本与可变现净值孰低法）。她初始有 800 英镑的存货。销售成本计算如下：期初存货 800 英镑 + 采购 0 英镑（1 月份没有额外采购）– 期末存货 300 英镑 = 500 英镑。注意，最初的 800 英镑进货即为期初存货。调整分录为：借记销售成本 800 英镑，贷记存货 800 英镑（将期初存货转入销售成本），然后借记存货 300 英镑，贷记销售成本 300 英镑（记录期末存货）。完成后，存货账户显示 300 英镑，销售成本总额为 500 英镑。

Sales revenue was £3,200, so gross profit is £3,200 – £500 = £2,700. This step is crucial for the income statement.

销售收入为 3,200 英镑，因此毛利润为 3,200 – 500 = 2,700 英镑。这一步对利润表至关重要。

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8. Preparing the Trial Balance | 编制试算平衡表

After posting all transactions and adjustments, we extract a trial balance to check the equality of debits and credits. Let us list all account balances after adjustments:

过账所有交易和调整后，我们编制试算平衡表以检查借贷方是否相等。下面列出调整后的所有账户余额：

Account / 账户	Debit (£) / 借方	Credit (£) / 贷方
Bank / 银行	5,490
Inventory / 存货	300
Prepaid Insurance / 预付保险费	220
Shop Fittings / 店铺装置	1,200
Accumulated Depreciation / 累计折旧		20
Accounts Payable / 应付账款		400
Accrued Expenses / 应计费用		90
Capital / 资本		5,000
Drawings / 提款	500
Sales Revenue / 销售收入		3,200
Cost of Sales / 销售成本	500
Rent Expense / 租金费用	400
Advertising Expense / 广告费用	150
Stationery Expense / 文具费用	60
Insurance Expense / 保险费用	20
Electricity Expense / 电费	90
Depreciation Expense / 折旧费用	20
Totals / 合计	8,950	8,950

The trial balance totals agree, confirming that the double-entry has been maintained correctly. Now we can prepare the financial statements.

试算平衡表借方和贷方总额一致，确认复式记账正确无误。现在我们可以编制财务报表了。

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9. Income Statement for January | 1 月份的利润表

The income statement shows the profit or loss for the period. For Sophia’s Craft Shop:

利润表显示该期间的利润或亏损。索菲亚手工品商店的利润表如下：

Income Statement for the month ended 31 January 2025 | 截至2025年1月31日的月度利润表

Sales Revenue / 销售收入	£3,200
Cost of Sales / 销售成本	(£500)
Gross Profit / 毛利润	£2,700
Less Expenses / 减：费用
Rent / 租金	£400
Advertising / 广告	£150
Stationery / 文具	£60
Insurance / 保险	£20
Electricity / 电费	£90
Depreciation / 折旧	£20
Total Expenses / 费用合计	(£740)
Net Profit / 净利润	£1,960

The net profit of £1,960 will be added to the capital in the balance sheet after accounting for drawings. This profit indicates Sophia’s business is performing well in its first month.

净利润 1,960 英镑将在扣除提款后加至资产负债表中的资本中。这一利润表明索菲亚的生意在第一个月表现良好。

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10. Statement of Financial Position (Balance Sheet) | 财务状况表（资产负债表）

The balance sheet shows the financial position at the end of January. Assets are listed in order of liquidity, and liabilities are shown separately.

资产负债表显示 1 月底的财务状况。资产按流动性排列，负债单独列示。

Statement of Financial Position as at 31 January 2025 | 截至2025年1月31日的财务状况表

Assets / 资产	£	Liabilities & Equity / 负债与权益	£
Non-current Assets / 非流动资产		Capital & Reserves / 资本与储备
Shop Fittings at cost / 店铺装置原值	1,200	Capital / 资本	5,000
Less Accumulated Depreciation / 减：累计折旧	(20)	Add Net Profit / 加：净利润	1,960
Net Book Value / 账面净值	1,180	Less Drawings / 减：提款	(500)
Current Assets / 流动资产		Total Equity / 权益合计	6,460
Inventory / 存货	300	Current Liabilities / 流动负债
Prepaid Insurance / 预付保险费	220	Accounts Payable / 应付账款	400
Bank / 银行	5,490	Accrued Expenses / 应计费用	90
Total Current Assets / 流动资产合计	6,010	Total Current Liabilities / 流动负债合计	490
Total Assets / 资产合计	7,190	Total Liabilities & Equity / 负债与权益合计	7,190

The balance sheet balances, which confirms the accuracy of our double-entry records. The key equation Assets = Liabilities + Equity is satisfied.

资产负债表左右平衡，这验证了我们复式记账记录的准确性。关键等式资产 = 负债 + 权益得到满足。

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11. Analysing the Financial Statements | 财务报表分析

We can compute a few simple ratios to understand performance. The gross profit margin is (Gross Profit ÷ Sales) × 100 = (£2,700 ÷ £3,200) × 100 ≈ 84.4%. This is very high, typical for a craft business with low cost of goods. The net profit margin is (Net Profit ÷ Sales) × 100 = (£1,960 ÷ £3,200) × 100 = 61.25%. This shows strong control over expenses.

我们可以计算一些简单的比率来理解业绩。毛利率 =（毛利润 ÷ 销售收入）× 100 =（2,700 ÷ 3,200）× 100 ≈ 84.4%。这一比率非常高，对于商品成本较低的手工行业来说是典型的。净利率 =（净利润 ÷ 销售收入）× 100 =（1,960 ÷ 3,200）× 100 = 61.25%。这表明对费用的控制很有力。

Liquidity can be assessed by the current ratio: Current Assets ÷ Current Liabilities = £6,010 ÷ £490 ≈ 12.27:1. This is exceptionally high, meaning Sophia has more than enough current assets to cover her short-term obligations. However, she may want to invest excess cash rather than leave it idle in the bank.

流动性可通过流动比率来评估：流动资产 ÷ 流动负债 = 6,010 ÷ 490 ≈ 12.27:1。这个比率非常高，意味着索菲亚有足够的流动资产来偿还短期债务。不过，她可能希望将多余现金进行投资，而不是闲置在银行里。

Learners should always interpret ratios in context. A very high current ratio could also signal inefficient use of working capital. For a small new business, though, holding high cash reserves can be prudent.

学习者应始终结合背景解读比率。非常高的流动比率也可能表明营运资金利用效率低下。但对于一家新成立的小企业来说，持有大量现金储备可能是审慎的做法。

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12. Common Errors and How to Avoid Them | 常见错误及避免方法

When working through case studies, KS3 students often make these mistakes: forgetting to record drawings or treating them as an expense; mixing up prepayments and accruals; failing to depreciate non-current assets; and not adjusting for closing inventory. Always ask: ‘Has this transaction changed assets, liabilities, or equity? Which accounts need debiting and crediting?’

在进行案例分析时，KS3 学生常犯以下错误：忘记记录提款或将其作为费用处理；混淆预付款和应计项目；未对非流动资产计提折旧；以及未对期末存货进行调整。永远要问：“这笔交易是否改变了资产、负债或权益？哪些账户需要借记和贷记？”

Another pitfall is incorrectly classifying capital and revenue expenditure. Buying shop fittings is capital expenditure (added to non-current assets), whereas repairs and maintenance would be revenue expenditure (expenses in the income statement). Understanding this distinction is crucial for accurate financial reporting.

另一个陷阱是错误分类资本性支出和收益性支出。购买店铺装置属于资本性支出（计入非流动资产），而维修和维护费用则属于收益性支出（计入利润表的费用）。理解这一区别对准确编制财务报告至关重要。

Finally, always check that the trial balance totals match before preparing financial statements. If they disagree, re-check each journal entry and posting to locate transposition errors or omitted entries.

最后，在编制财务报表之前，务必检查试算平衡表总额是否一致。如果不一致，请重新核对每笔日记账分录和过账，找出换位错误或漏记的分录。

Practising with case studies like Sophia’s Craft Shop builds confidence and mastery of the accounting cycle. Try creating your own scenario and work it through

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