📚 Practical Case Study in Accounting: A Real-World Drill | 会计案例分析实战演练
Welcome to this hands-on case study designed to strengthen your understanding of basic accounting principles. We will follow Amy, a young entrepreneur who starts a bubble tea business. Through a series of realistic transactions, you will learn how to apply the double-entry system, prepare journal entries, post to ledgers, extract a trial balance, make adjustments, and finally produce an income statement and a statement of financial position. Let’s dive in!
欢迎来到本次动手实操的案例分析，它旨在巩固你对基础会计原则的理解。我们将跟随一位年轻创业者艾米，看她如何开办一家奶茶店。通过一系列真实的交易，你将学习如何运用复式记账系统、编制日记账分录、过账到分类账、编制试算平衡表、进行账项调整，并最终生成损益表和财务状况表。让我们一起开始吧！
1. Meet Amy’s Bubble Tea – The Business Scenario | 了解艾米的奶茶店——业务场景
Amy started ‘Amy’s Bubble Tea’ on 1 September 2024. She invested £5,000 of her own savings and also borrowed £2,000 from a bank to give the business extra cash. During the month she bought equipment, purchased ingredients, paid rent, made cash and credit sales, paid wages, withdrew some money for personal use, and settled some bills. The table below summarises all the transactions that took place in September.
艾米于2024年9月1日创办了“艾米的奶茶店”。她投入了5,000英镑的个人积蓄，并向银行贷款2,000英镑，为生意提供额外的现金流。在这个月里，她购买了设备、采购了原料、支付了租金、进行了现金和赊销、支付了工资、提取了一些个人使用的资金，并结清了一些账单。下表总结了9月份发生的所有交易。
| Date | Transaction | Amount |
|---|---|---|
| 1 Sep | Owner invested cash | £5,000 |
| 2 Sep | Bank loan received | £2,000 |
| 3 Sep | Purchased tea-making equipment for cash | £1,500 |
| 4 Sep | Bought ingredients (inventory) for cash | £800 |
| 5 Sep | Paid rent for the month | £600 |
| 6 Sep | Cash sales | £3,200 |
| 7 Sep | Credit sales to a local café | £400 |
| 8 Sep | Paid wages | £500 |
| 10 Sep | Received cash from credit customer | £300 |
| 12 Sep | Amy withdrew cash for personal use | £200 |
| 15 Sep | Paid electricity bill | £100 |
| 18 Sep | Purchased more ingredients on credit | £300 |
| 25 Sep | Paid part of the credit purchase | £200 |
| 30 Sep | Depreciation of equipment for the month | £50 |
Now that we have the full picture, we can work through the accounting cycle step by step. The transactions involve assets (cash, equipment, receivables), liabilities (loan, payables), capital, income, and expenses – the building blocks of any set of accounts.
现在我们掌握了全貌，就可以逐步完成整个会计循环。这些交易涉及资产（现金、设备、应收账款）、负债（贷款、应付账款）、资本、收入和费用——这正是任何一套账目的构建模块。
2. The Accounting Equation and Double-Entry Rules | 会计等式与复式记账规则
Every transaction affects the accounting equation, which must always balance:
Assets = Liabilities + Capital
或扩展为：资产 = 负债 + 资本 + (收入 – 费用 – 提款)。中文： Assets = Liabilities + Capital + (Revenue – Expenses – Drawings).
When using double-entry bookkeeping, every transaction has two effects – a debit and a credit. Debits (Dr) increase assets and expenses, but decrease liabilities, capital and income. Credits (Cr) do the opposite. Remembering this rule is the key to avoiding mistakes. For Amy’s business, we will use the following main accounts: Cash, Trade Receivables (debtors), Equipment, Accumulated Depreciation, Inventory (Purchases), Trade Payables (creditors), Bank Loan, Capital, Drawings, Sales Revenue, Rent Expense, Wages Expense, Electricity Expense, and Depreciation Expense.
每笔交易都会影响会计等式，该等式必须始终保持平衡。在使用复式记账时，每笔交易都有双重影响——一个借方和一个贷方。借记（Dr）增加资产和费用，但减少负债、资本和收入。贷记（Cr）则相反。记住这条规则是避免错误的关键。对于艾米的业务，我们将使用以下主要账户：现金、应收账款（债务人）、设备、累计折旧、存货（采购）、应付账款（债权人）、银行贷款、资本、提款、销售收入、租金费用、工资费用、电费和折旧费用。
Let’s test the rule with Amy’s first transaction: she invested £5,000 cash. The business receives an asset (Cash Dr) and owner’s equity increases (Capital Cr). The equation remains in balance: Assets +£5,000 = Liabilities £0 + Capital +£5,000. Similarly, the bank loan increases Cash (Dr) and creates a liability Loan Payable (Cr). By sticking to this logic for every entry, the books will always balance.
让我们用艾米的第一笔交易测试这条规则：她投入了5,000英镑现金。企业收到一项资产（借记现金），同时所有者权益增加（贷记资本）。等式保持平衡：资产+5,000英镑 = 负债0英镑 + 资本+5,000英镑。同样，银行贷款增加了现金（借方），同时产生了一项负债应付贷款（贷方）。只要每笔分录都遵循这个逻辑，账簿就始终平衡。
3. Recording Transactions in the General Journal | 在日记账中记录交易
The general journal is where transactions are first recorded in chronological order. Below are the journal entries for Amy’s Bubble Tea for September 2024. Each entry shows which accounts to debit and credit, with a brief narration.
日记账是首先按时间顺序记录交易的地方。以下是艾米奶茶店2024年9月的日记账分录。每笔分录标明了需要借记和贷记的账户，并附有简短摘要。
1 Sep – Owner’s capital: Debit Cash £5,000, Credit Capital £5,000. (Amy introduces cash into the business.)
9月1日——所有者资本： 借记现金 5,000 英镑，贷记资本 5,000 英镑。（艾米向企业投入现金。）
2 Sep – Bank loan: Debit Cash £2,000, Credit Bank Loan £2,000. (Received loan from bank.)
9月2日——银行贷款： 借记现金 2,000 英镑，贷记银行贷款 2,000 英镑。（收到银行贷款。）
3 Sep – Equipment purchase: Debit Equipment £1,500, Credit Cash £1,500. (Bought equipment with cash.)
9月3日——购买设备： 借记设备 1,500 英镑，贷记现金 1,500 英镑。（用现金购买设备。）
4 Sep – Inventory purchase: Debit Purchases (Ingredients) £800, Credit Cash £800. (Cash purchase of ingredients.)
9月4日——购买存货： 借记采购（原料）800 英镑，贷记现金 800 英镑。（现金购买原料。）
5 Sep – Rent payment: Debit Rent Expense £600, Credit Cash £600. (Paid monthly rent.)
9月5日——支付租金： 借记租金费用 600 英镑，贷记现金 600 英镑。（支付当月租金。）
6 Sep – Cash sales: Debit Cash £3,200, Credit Sales Revenue £3,200. (Cash sales for the day.)
9月6日——现金销售： 借记现金 3,200 英镑，贷记销售收入 3,200 英镑。（当日现金销售。）
7 Sep – Credit sales: Debit Trade Receivables £400, Credit Sales Revenue £400. (Sold tea on credit to a local cafe.)
9月7日——赊销： 借记应收账款 400 英镑，贷记销售收入 400 英镑。（赊销奶茶给当地一家咖啡馆。）
8 Sep – Wages: Debit Wages Expense £500, Credit Cash £500. (Paid staff wages.)
9月8日——工资： 借记工资费用 500 英镑，贷记现金 500 英镑。（支付员工工资。）
10 Sep – Receipt from debtor: Debit Cash £300, Credit Trade Receivables £300. (Received partial payment from credit customer.)
9月10日——收到债务人还款： 借记现金 300 英镑，贷记应收账款 300 英镑。（收到赊销客户的部分付款。）
12 Sep – Drawings: Debit Drawings £200, Credit Cash £200. (Amy withdrew cash for personal expenses.)
9月12日——提款： 借记提款 200 英镑，贷记现金 200 英镑。（艾米提取现金用于个人支出。）
15 Sep – Electricity: Debit Electricity Expense £100, Credit Cash £100. (Paid electricity bill.)
9月15日——电费： 借记电费 100 英镑，贷记现金 100 英镑。（支付电费账单。）
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