Year 8 CCEA Accounting: Formula & Theorem Quick Reference Handbook | 八年级CCEA会计公式定理速查手册

📚 Year 8 CCEA Accounting: Formula & Theorem Quick Reference Handbook | 八年级CCEA会计公式定理速查手册

This handbook collects all the essential formulas, rules and theorems for Year 8 CCEA Accounting in one place. Use it to revise, check your understanding and build confidence before class tests and exams.

本手册汇集了八年级CCEA会计课程的所有关键公式、规则和定理。你可以用它来复习、检查理解并在课堂测验和考试前建立信心。

1. The Accounting Equation | 会计恒等式

The accounting equation is the foundation of all double-entry bookkeeping. It shows that everything a business owns is funded either by borrowing or by the owner’s investment.

会计恒等式是一切复式记账的基础。它表明企业拥有的一切要么是通过借款获得资金，要么是由所有者投入的资本所资助。

Assets = Liabilities + Capital

Assets are resources controlled by the business, such as cash, premises, inventory and trade receivables.

资产是企业控制的资源，例如现金、房屋、存货和应收账款。

Liabilities are amounts owed to outsiders, including bank loans, trade payables and accruals.

负债是欠外部人士的款项，包括银行贷款、应付账款和应计费用。

Capital represents the owner’s stake in the business – the original money put in plus any profits kept in the business.

资本代表所有者在企业中的权益——即最初投入的资金加上留在企业中的利润。

2. The Double-Entry Rule | 复式记账规则

Every transaction affects at least two accounts so that the accounting equation always stays in balance. This is the rule of double entry.

每笔交易至少影响两个账户，从而使会计等式始终保持平衡。这就是复式记账规则。

Total Debits = Total Credits for every transaction

To apply this rule correctly, remember how debits and credits affect different types of accounts.

要正确应用这一规则，请记住借项和贷项如何影响不同类型的账户。

For assets and expenses: an increase is a debit, a decrease is a credit.

对于资产和费用：增加记借方，减少记贷方。

For liabilities, capital and income: an increase is a credit, a decrease is a debit.

对于负债、资本和收入：增加记贷方，减少记借方。

This theorem ensures the books always balance, provided the entries are made correctly.

只要分录正确，这一法则就能确保账簿始终平衡。

3. The Trial Balance Theorem | 试算平衡定理

A trial balance lists all the ledger account balances. If the double entry has been applied correctly, the total of the debit column will equal the total of the credit column.

试算平衡表列出所有分类账账户的余额。如果复式记账运用正确，借方栏总额将等于贷方栏总额。

Sum of Debit Balances = Sum of Credit Balances

A balanced trial balance provides evidence that arithmetical accuracy has been achieved, but it does not guarantee that there are no errors.

试算平衡表平衡证明算术准确性达到了，但它并不能保证没有错误。

Some errors, such as omission of a whole transaction or a compensating error, still leave the trial balance in balance.

有些错误，例如遗漏整笔交易或抵销性错误，仍会使试算平衡表保持平衡。

Nonetheless, preparing a trial balance is a crucial check before drafting the final accounts.

尽管如此，在编制最终报表之前，编制试算平衡表是一项至关重要的检查。

4. Profit Calculation | 利润计算

Profit measures how much wealth the business has generated after paying for all costs. The simplest profit formula is revenue minus expenses.

利润衡量企业在支付所有成本后创造了多少财富。最简单的利润公式是收入减去费用。

Net Profit = Total Revenue – Total Expenses

Revenue is the income earned from selling goods or services before any costs are deducted.

收入是扣除任何成本之前通过销售商品或服务赚取的所得。

Expenses include day-to-day running costs such as rent, wages, utilities and advertising.

费用包括日常运营成本，如租金、工资、水电费和广告费。

When a business also trades physical goods, we split profit into gross profit and net profit to give more detailed information.

当企业还从事实物商品交易时，我们将利润分为毛利和净利，以提供更详细的信息。

5. Cost of Sales | 销售成本

Cost of sales represents the direct cost of the goods that have been sold during a period. It is essential for calculating gross profit.

销售成本代表某一期间内已售商品的直接成本。它对计算毛利至关重要。

Cost of Sales = Opening Inventory + Purchases – Closing Inventory

Opening inventory is the value of stock at the start of the period; closing inventory is the value of unsold stock at the end.

期初存货是期初库存的价值；期末存货是期末未售出库存的价值。

Gross profit is then found by deducting cost of sales from revenue.

然后用收入减去销售成本得出毛利。

Gross Profit = Revenue – Cost of Sales

Net profit follows by subtracting all other operating expenses from gross profit.

再从毛利中减去所有其他营业费用即可得到净利。

Net Profit = Gross Profit – Other Expenses

6. Balance Sheet Equation | 资产负债表等式

The balance sheet is a snapshot of the accounting equation at a specific date. It shows what the business owns and how those resources have been financed.

资产负债表是会计等式在特定日期的快照。它展示了企业拥有什么以及这些资源是如何获得资金的。

Assets = Liabilities + Capital

Non-current assets are long-term resources used over many years, like machinery, vehicles and buildings.

非流动资产是使用多年的长期资源，如机器、车辆和建筑物。

Current assets are short-term resources expected to be turned into cash within a year, such as inventory, trade receivables and bank balances.

流动资产是预计在一年内转换为现金的短期资源，如存货、应收账款和银行存款。

Liabilities are similarly split into non-current (due after one year) and current (due within one year).

负债同样分为非流动（一年后到期）和流动（一年内到期）两类。

Capital on the balance sheet equals the owner’s equity at that date – it equals assets minus liabilities.

资产负债表上的资本等于当日的所有者权益——它等于资产减去负债。

7. Working Capital | 营运资金

Working capital measures a business’s ability to pay its short-term debts as they fall due. It is a simple but vital liquidity indicator.

营运资金衡量企业偿还到期短期债务的能力。它是一个简单但至关重要的流动性指标。

Working Capital = Current Assets – Current Liabilities

A positive working capital means the business has more short-term resources than short-term obligations.

正的营运资金意味着企业拥有的短期资源多于短期债务。

If working capital is negative, the business may struggle to pay suppliers and meet other immediate payments.

如果营运资金为负，企业可能难以支付供应商款项和满足其他即时支付需求。

Keeping an eye on working capital helps owners manage cash flow and avoid liquidity problems.

关注营运资金有助于所有者管理现金流并避免流动性问题。

8. Capital Account Changes | 资本账户变动

The owner’s capital does not stay the same throughout the year. New investment, drawings and the profit or loss all cause it to change.

所有者的资本在一年中并非保持不变。新投资、提款以及利润或亏损都会导致其变化。

Closing Capital = Opening Capital + Additional Capital Introduced + Net Profit (or – Net Loss) – Drawings

Additional capital introduced means the owner has placed more personal funds into the business.

追加资本意味着所有者将更多个人资金投入企业。

Drawings are amounts the owner takes out of the business for personal use; they reduce the capital balance.

提款是所有者从企业提取用于个人用途的金额；它们减少资本余额。

This formula links the income statement and the balance sheet, showing how profit feeds into the owner’s equity.

这个公式将利润表与资产负债表联系起来，显示了利润如何计入所有者权益。

9. Profit Margin Ratio | 利润率比率

Ratios help compare profitability across different size businesses or different periods. The gross profit margin is often the first ratio students encounter.

比率有助于比较不同规模企业或不同期间的盈利能力。毛利率通常是学生接触到的第一个比率。

Gross Profit Margin = (Gross Profit / Revenue) × 100%

This percentage tells you how much of every pound of sales is left as gross profit after paying for the cost of goods sold.

这个百分比告诉你每一英镑销售收入在支付商品销售成本后剩下多少毛利。

A higher gross profit margin generally means the business keeps more from each sale to cover expenses and generate net profit.

较高的毛利率通常意味着企业从每笔销售中保留更多金额用于覆盖费用并产生净利润。

You can also calculate net profit margin using net profit instead of gross profit, which gives an overall efficiency measure.

你也可以用净利润代替毛利来计算净利率，这提供了一个总体效率衡量标准。

Net Profit Margin = (Net Profit / Revenue) × 100%

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