📚 IGCSE Business Studies: Income Statements Core Exam Points | IGCSE商科：利润表（Income Statements）核心考点
The income statement, also known as the profit and loss account, is one of the most important financial documents that a business produces. It summarises the revenues, costs, and profits or losses of a business over a specific period of time — usually one year. For CIE IGCSE Business Studies, understanding the structure of the income statement, how to calculate key figures, and why it matters to stakeholders is essential for exam success.
利润表，又称损益账户，是企业编制的最重要的财务文件之一。它总结了一个企业在特定时期内（通常为一年）的收入、成本以及利润或亏损。对于CIE IGCSE商科考试而言，理解利润表的结构、如何计算关键数字，以及它为什么对利益相关者重要，是考试成功的关键。
1. What is an Income Statement? | 什么是利润表？
An income statement is a financial statement that shows a business’s revenue, costs, and profit or loss over a trading period. It is also called a profit and loss account. The key purpose is to measure how well a business has performed financially during that period.
利润表是一种财务报表，它显示了企业在某一交易期内的收入、成本和利润或亏损。它也被称为损益账户。其主要目的是衡量企业在那一时期内的财务表现如何。
The income statement answers three basic questions: How much revenue did the business earn? How much did it cost to earn that revenue? How much profit (or loss) remains?
利润表回答三个基本问题：企业赚了多少收入？赚取这些收入花了多少成本？剩下多少利润（或亏损）？
Revenue − Costs = Profit (or Loss)
2. Structure of the Income Statement | 利润表的结构
The income statement is built in a logical sequence, moving from sales revenue down to retained profit. Each stage subtracts a different type of cost.
利润表按照逻辑顺序构建，从销售收入一直到留存利润。每一步都减去不同类型的成本。
| Item | Description | Example (£) |
| Sales Revenue | Total income from selling goods/services | 200,000 |
| Cost of Sales | Direct costs of producing goods sold | (80,000) |
| Gross Profit | Revenue − Cost of Sales | 120,000 |
| Other Operating Expenses | Indirect costs such as rent, salaries, advertising | (50,000) |
| Profit before Interest and Tax (PBIT) | Gross Profit − Other Operating Expenses | 70,000 |
| Interest | Cost of borrowing (e.g., bank loan interest) | (5,000) |
| Profit before Tax | PBIT − Interest | 65,000 |
| Tax | Government tax on profit (e.g., corporation tax) | (13,000) |
| Profit for the Year (Net Profit) | Profit after tax | 52,000 |
| Dividends | Share of profit paid to shareholders | (20,000) |
| Retained Profit | Profit kept in the business for reinvestment | 32,000 |
3. Sales Revenue | 销售收入
Sales revenue (or turnover) is the total amount of money received from selling goods or services during a period. It is calculated by multiplying the selling price by the quantity sold.
销售收入（或营业额）是在一个时期内通过销售商品或提供服务所获得的总金额。它的计算公式是销售价格乘以销售量。
Sales Revenue = Selling Price × Quantity Sold
For example, if a business sells 1,000 units at £50 each, the sales revenue is £50,000. This figure appears at the very top of the income statement.
例如，如果一家企业以每件50英镑的价格销售了1000件产品，那么销售收入就是50,000英镑。这个数字出现在利润表的最顶端。
Common exam errors: forgetting to use the price per unit, or confusing revenue with profit. Revenue is always the total value of sales, not the amount kept.
常见的考试错误：忘记使用单价，或者混淆收入与利润。收入永远是销售的总价值，而不是留下的金额。
4. Cost of Sales | 销售成本
Cost of sales refers to the direct costs of producing the goods that were sold. These are costs that vary directly with the level of output, such as raw materials, direct labour, and direct factory overheads.
销售成本是指生产所售商品的直接成本。这些成本随产量水平直接变化，例如原材料、直接人工和直接工厂间接费用。
Cost of sales is not simply the amount spent on materials during the year. It must be adjusted for changes in inventory (stock). The formula is:
销售成本并不简单地等于当年在材料上的花费。它必须根据库存（存货）的变化进行调整。公式如下：
Cost of Sales = Opening Inventory + Purchases − Closing Inventory
Why does this matter? If a business starts the year with inventory, that stock was bought in the previous period but sold in the current period, so it must be added. Closing inventory is kept for next year, so it must be subtracted.
为什么这一点很重要？如果一家企业在年初有库存，那些存货是在上一期间购买的，但在当前期间出售，因此必须加上。期末库存是为下一年保留的，因此必须减去。
Worked example: Opening inventory £10,000, purchases £60,000, closing inventory £15,000. Cost of sales = 10,000 + 60,000 − 15,000 = £55,000.
示例：期初库存10,000英镑，采购60,000英镑，期末库存15,000英镑。销售成本 = 10,000 + 60,000 − 15,000 = 55,000英镑。
5. Gross Profit | 毛利
Gross profit is the profit made from buying/selling goods before any indirect expenses are deducted. It shows how efficiently a business uses its direct costs to generate a profit margin.
毛利是在扣除任何间接费用之前，从买卖商品中获得的利润。它显示了企业在利用直接成本来获取利润率方面的效率。
Gross Profit = Sales Revenue − Cost of Sales
For example, if revenue is £200,000 and cost of sales is £80,000, gross profit is £120,000. This is a key indicator for retail and manufacturing businesses.
例如，如果收入是200,000英镑，销售成本是80,000英镑，那么毛利就是120,000英镑。这是零售和制造业企业的一个关键指标。
A high gross profit is not enough on its own — the business must also control its other expenses to achieve a healthy net profit.
仅仅有高毛利是不够的——企业还必须控制其其他费用，以实现健康的净利润。
6. Profit before Interest and Tax (PBIT) | 息税前利润
PBIT, also known as operating profit, is the profit earned from normal trading activities after deducting operating expenses such as rent, wages, advertising, insurance, and depreciation. It excludes interest and tax.
息税前利润（PBIT），也称为营业利润，是在扣除营业费用（如租金、工资、广告、保险和折旧）后，从正常交易活动中获得的利润。它不包括利息和税收。
PBIT = Gross Profit − Other Operating Expenses
Operating expenses are also called indirect costs or overheads. They do not vary directly with production volume, and they are necessary to keep the business running.
营业费用也称为间接成本或间接费用。它们不随产量直接变化，但它们是维持企业运营所必需的。
For CIE IGCSE, you must be able to classify expenses as either cost of sales (direct) or operating expenses (indirect). Forgetting to include an item or miscategorising it is a common reason for losing marks.
对于CIE IGCSE，你必须能够将费用分类为销售成本（直接）或营业费用（间接）。忘记包含某个项目或错误分类是失分的常见原因。
7. Profit for the Year (Net Profit) | 年度利润（净利润）
Net profit is the final profit after all costs, including interest and tax, have been deducted from revenue. It is often called the “bottom line” because it is the last line on the income statement before appropriations.
净利润是从收入中扣除所有成本（包括利息和税收）之后得到的最终利润。它通常被称为“底线”，因为它是利润表在利润分配之前的最后一行。
Net Profit = PBIT − Interest − Tax
Interest is a cost of borrowing. A business that uses a bank loan or overdraft must pay interest, which reduces profit. Tax is the government’s share of profit, such as corporation tax.
利息是借贷的成本。使用银行贷款或透支的企业必须支付利息，这会减少利润。税收是政府所占的利润份额，例如公司税。
Remember that net profit is available to the owners, but it is not necessarily paid all out. Some may be distributed as dividends, and the rest is retained in the business.
记住，净利润归所有者所有，但不一定全部支付给所有者。其中一部分可能作为股利分配，其余部分则保留在企业中。
8. Retained Profit | 留存利润
Retained profit is the part of net profit that is kept in the business after dividends have been paid to shareholders. It is an important source of internal finance for growing or expanding the business.
留存利润是在向股东支付股利后，保留在企业中的那部分净利润。它是用于企业成长或扩张的重要内部融资来源。
Retained Profit = Net Profit − Dividends
Retained profit is different from the previous years’ reserves. In the income statement, we only show the current year’s retained profit. However, a company may also have a general reserve or accumulated retained profits from earlier years shown in the statement of financial position (balance sheet).
留存利润不同于前几年的储备。在利润表中，我们只显示当年的留存利润。然而，公司也可能在财务状况表（资产负债表）中显示来自更早年份的普通储备或累计留存利润。
For IGCSE, you mainly need to know that dividends are paid out of profit, and the remaining amount becomes retained profit. This figure is then added to retained earnings in the equity section of the balance sheet.
对于IGCSE，你主要需要知道股利从利润中支付，剩余金额成为留存利润。然后将这一数字添加到资产负债表的权益部分的留存收益中。
9. Depreciation — A Special Expense | 折旧——一项特殊费用
Depreciation is the decline in value of a fixed asset over time due to wear and tear, age, or obsolescence. Although it is a non-cash expense, it is recorded in the income statement as an operating expense.
折旧是固定资产因磨损、老化或过时而在时间推移中价值下降的部分。尽管它是一项非现金支出，但它作为营业费用记录在利润表中。
For example, if a machine costs £20,000 and has an expected life of 5 years with a residual value of £4,000, the annual straight-line depreciation is (20,000 − 4,000) ÷ 5 = £3,200. This appears as an expense each year.
例如，如果一台机器花费20,000英镑，预计使用年限为5年，残值为4,000英镑，那么直线法年折旧额 = (20,000 − 4,000) ÷ 5 = 3,200英镑。这个金额每年作为费用出现。
Why does depreciation matter for the income statement? It spreads the cost of a long-term asset over its useful life, rather than charging the whole cost in year one. This matches the cost with the revenue the asset helps to generate.
为什么折旧对利润表很重要？它将长期资产的成本在其使用寿命内分摊，而不是在第一年全部计入费用。这使成本与该资产帮助产生的收入相匹配。
10. Uses of Income Statements | 利润表的用途
Managers use the income statement to assess whether the business is profitable, to compare performance with previous years, and to make decisions about pricing, cost control, and expansion.
管理者使用利润表来评估企业是否盈利，与往年比较业绩，并做出关于定价、成本控制和扩张的决策。
Shareholders and investors use it
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