📚 Year 8 CAIE Accounting: Case Study Practice | Year 8 CAIE 会计：案例分析实战演练
Welcome to a hands-on case study designed for Year 8 CAIE Accounting students. In this article, you will follow Anna as she starts her own birthday cake business. We will record her transactions step by step, apply the double-entry system, make a simple adjustment, and prepare a trial balance, income statement, and balance sheet. This real-life scenario will help you connect theory to practice and build confidence in handling basic accounting tasks.
欢迎来到为 Year 8 CAIE 会计课程设计的实战案例。在本文中，你将跟随安娜一起创办她的生日蛋糕生意。我们将逐步记录她的交易，运用复式记账法，进行一个简单的调整，然后编制试算平衡表、利润表和资产负债表。这个贴近真实的情景将帮助你链接理论与实务，增强处理基础会计任务的信心。
1. Introduction to Anna’s Cake Business | 走进安娜的蛋糕生意
Anna loves baking and decides to turn her hobby into a small business. She names it ‘Anna’s Cakes’ and plans to sell birthday cakes to family and friends. To keep track of her money, Anna will use a business bank account for all payments and receipts. Her first month of trading is January 2025. We will look at six transactions and one end-of-month adjustment.
安娜热爱烘焙，决定把这项爱好变成一个小生意。她给这份事业取名为“安娜的蛋糕”，计划向家人和朋友出售生日蛋糕。为了清楚掌握资金的来龙去脉，安娜将使用一个专用的企业银行账户处理所有付款和收款。她的第一个营业月是2025年1月。我们将分析六笔交易和一笔月末调整。
2. Essential Accounting Concepts | 基本会计概念
Before diving in, recall two key ideas. First, the accounting equation: Assets = Liabilities + Owner’s Equity. Second, every transaction affects at least two accounts – this is the double-entry system. We will record debits and credits to keep the equation in balance. Assets include cash at bank, equipment, and supplies. Equity increases with capital and revenue, and decreases with expenses and drawings.
在深入案例之前，我们先回顾两个关键概念。第一，会计等式：资产 = 负债 + 所有者权益。第二，每一笔交易至少影响两个账户——这就是复式记账法。我们将记录借方和贷方，以保持等式平衡。资产包括银行存款、设备和物料。权益随资本投入和收入而增加，随费用和提款而减少。
3. The Accounting Equation and Double-Entry | 会计等式与复式记账
For Year 8, we focus on simple rules: assets increase on the debit side, decrease on the credit side. Liabilities and equity increase on the credit side, decrease on the debit side. Revenues are credited, expenses are debited. Throughout the case study, we will apply these rules to each transaction and see how the accounting equation always balances.
在 Year 8 阶段，我们主要掌握简单规则：资产增加记借方，减少记贷方；负债和权益增加记贷方，减少记借方；收入记贷方，费用记借方。在整个案例中，我们将把这些规则应用到每一笔交易，并观察会计等式如何始终保持平衡。
4. Transaction 1: Owner’s Capital Investment | 交易1：所有者资本投入
On 1 January, Anna deposits $200 of her personal savings into the business bank account as capital. The bank account (an asset) increases by $200, so we debit Bank. Owner’s equity (Capital) increases by $200, so we credit Capital. The accounting equation remains balanced: Assets ($200) = Liabilities ($0) + Equity ($200).
1月1日，安娜将个人储蓄中的200美元存入企业的银行账户作为资本。银行存款这一资产增加200美元，因此借记“银行存款”。所有者权益（资本）增加200美元，因此贷记“资本”。会计等式保持平衡：资产（200美元）= 负债（0美元）+ 权益（200美元）。
5. Transaction 2: Purchasing Baking Ingredients | 交易2：购买烘焙原料
On 2 January, Anna buys baking ingredients (flour, sugar, eggs, etc.) for $60, paying from the bank account. These ingredients are considered ‘Supplies’, an asset because they will be used over time. We debit Supplies $60 and credit Bank $60. The total assets do not change; one asset (Bank) decreases and another asset (Supplies) increases.
1月2日，安娜用银行账户支付60美元购买了烘焙原料（面粉、糖、鸡蛋等）。这些原料被视为“物料”，是一项资产，因为它们将在未来被逐步使用。我们借记“物料”60美元，贷记“银行存款”60美元。资产总额并未改变，只是一项资产（银行存款）减少，另一项资产（物料）增加。
6. Transaction 3: Buying a Mixer (Equipment) | 交易3：购买搅拌机（设备）
On 3 January, Anna purchases a hand mixer for $80, paying via bank transfer. The mixer is a long-term asset classified as Equipment. We debit Equipment $80 and credit Bank $80. Again, one asset replaces another, leaving total assets unchanged at $200.
1月3日，安娜通过银行转账购买了一台手动搅拌机，花费80美元。搅拌机属于长期资产，归类为“设备”。我们借记“设备”80美元，贷记“银行存款”80美元。和之前一样，一项资产替代了另一项资产，资产总额仍为200美元不变。
7. Transaction 4: Buying Packaging Supplies | 交易4：购买包装材料
On 4 January, Anna spends $30 on cake boxes and decorations. She expects to use all of these within the month, so we treat this as an immediate expense called ‘Packaging Expense’. We debit Packaging Expense $30 and credit Bank $30. Expenses reduce equity, so this transaction lowers both assets and equity by $30.
1月4日，安娜花费30美元购买蛋糕包装盒和装饰品。她预计当月就会把这些材料全部用完，因此我们将其确认为一项当期费用，称为“包装费用”。我们借记“包装费用”30美元，贷记“银行存款”30美元。费用会减少权益，所以这笔交易使资产和权益同时减少30美元。
8. Transaction 5: Earning Sales Revenue | 交易5：获得销售收入
Throughout January, Anna sells cakes and receives $150 in total, all deposited into the bank. This inflow is revenue. We debit Bank $150 to increase the asset, and credit Sales Revenue $150 to increase equity. Now the bank balance rises and the business records a profit-generating activity.
整个1月，安娜出售蛋糕并收到总计150美元，全部存入银行。这笔流入属于收入。我们借记“银行存款”150美元以增加资产，并贷记“销售收入”150美元以增加权益。这时银行存款余额上升，企业记录了一项产生利润的活动。
9. Transaction 6: Paying Electricity Bill | 交易6：支付电费
At the end of January, Anna pays her electricity bill of $20 from the business bank account. This is an operating expense. We debit Electricity Expense $20 and credit Bank $20. Once again, assets decrease and equity decreases by the same amount.
1月底，安娜从企业银行账户支付了20美元的电费。这是一项营业费用。我们借记“电费”20美元，贷记“银行存款”20美元。同样，资产和权益等额减少。
10. Year-End Adjustment: Supplies Used | 月末调整：物料消耗
When Anna checks her baking ingredients at 31 January, she finds that half of them are still unused. She originally bought $60 worth of supplies; the remaining stock is valued at $30. This means $30 of supplies have been used up. We need to recognise Supplies Expense of $30 and reduce the Supplies asset accordingly. The adjusting entry is: debit Supplies Expense $30, credit Supplies $30. This adjustment ensures we match the cost of ingredients consumed with the period’s revenue.
1月31日安娜检查烘焙原料时，发现还有一半没有用完。她当初购入了价值60美元的物料，剩余库存价值30美元。这意味着已使用30美元的物料。我们需要确认30美元的物料费用，并相应减少物料资产。调整分录为：借记“物料费用”30美元，贷记“物料”30美元。这项调整确保耗用的原料成本能与当期收入相匹配。
11. Preparing a Trial Balance | 编制试算平衡表
Now let’s list all account balances after the adjustment and check that total debits equal total credits. We calculate the following balances:
现在，让我们列出调整后所有账户的余额，并检查借方总额是否等于贷方总额。我们计算得出以下余额：
- Bank: $200 – $60 – $80 – $30 + $150 – $20 = $160 (debit) / 银行存款：200 – 60 – 80 – 30 + 150 – 20 = 160 美元（借方）
- Supplies: $60 – $30 = $30 (debit) / 物料：60 – 30 = 30 美元（借方）
- Equipment: $80 (debit) / 设备：80 美元（借方）
- Capital: $200 (credit) / 资本：200 美元（贷方）
- Sales Revenue: $150 (credit) / 销售收入：150 美元（贷方）
- Packaging Expense: $30 (debit) / 包装费用：30 美元（借方）
- Supplies Expense: $30 (debit) / 物料费用：30 美元（借方）
- Electricity Expense: $20 (debit) / 电费：20 美元（借方）
Total debits: $160 + $30 + $80 + $30 + $30 + $20 = $350. Total credits: $200 + $150 = $350. The trial balance balances perfectly.
借方合计：160 + 30 + 80 + 30 + 30 + 20 = 350 美元。贷方合计：200 + 150 = 350 美元。试算平衡表完美平衡。
12. Preparing Financial Statements | 编制财务报表
Using the trial balance figures, we can prepare the income statement for the month ended 31 January 2025. Revenue is $150. Expenses are: Packaging Expense $30, Supplies Expense $30, and Electricity Expense $20. Total expenses amount to $80. Therefore, net profit = $150 – $80 = $70. This profit increases the owner’s equity.
利用试算平衡表中的数字，我们可以编制截至2025年1月31日的月度利润表。收入为150美元。费用包括：包装费用30美元、物料费用30美元、电费20美元，费用合计80美元。因此，净利润 = 150 – 80 = 70 美元。这笔利润将增加所有者权益。
Next, the balance sheet as at 31 January 2025:
接下来，编制2025年1月31日的资产负债表：
| Assets / 资产 | $ / 美元 |
|---|---|
| Bank / 银行存款 | 160 |
| Supplies / 物料 | 30 |
| Equipment / 设备 | 80 |
| Total Assets / 资产总计 | 270 |
| Equity / 权益 | $ / 美元 |
|---|---|
| Capital / 资本 | 200 |
| Add: Net Profit / 加：净利润 | 70 |
| Total Equity / 权益总计 | 270 |
The balance sheet confirms that Assets ($270) equal Equity ($270). There are no liabilities in this simple business. Anna can see her business is profitable and her records are accurate.
资产负债表显示，资产（270美元）等于权益（270美元）。在这个简单的生意中没有负债。安娜可以看到她的生意是盈利的，而且她的账目记录准确。
Published by TutorHao | Accounting Revision Series | aleveler.com
更多咨询请联系16621398022（同微信）
屏轩国际教育cambridge primary/secondary checkpoint, cat4, ukiset,ukcat,igcse,alevel,PAT,STEP,MAT, ibdp,ap,ssat,sat,sat2课程辅导，国外大学本科硕士研究生博士课程论文辅导