Financial Statements: Income Statements

An income statement (formerly called a profit and loss account) is one of the two key financial statements you need to understand for GCSE Business Studies. It shows a business's revenue, costs, and profit over a specific period.

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What Is an Income Statement?

An income statement (also called a profit and loss account) is a financial document that summarises a business's income, costs, and profit over a period of time (usually one year).

It answers the fundamental question: Did the business make a profit or a loss?

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Structure of an Income Statement

Item	What It Shows
Revenue (Turnover)	Total income from sales
Cost of sales (COGS)	Direct costs of producing the goods sold (raw materials, direct labour)
Gross profit	Revenue − Cost of sales
Operating expenses	Indirect costs of running the business (rent, wages, marketing, utilities)
Operating profit	Gross profit − Operating expenses
Interest and tax	Cost of borrowing and corporation tax
Net profit	Operating profit − Interest − Tax (the "bottom line")

Example Income Statement

Item	Amount (£)
Revenue	500,000
Cost of sales	(200,000)
Gross profit	300,000
Operating expenses	(180,000)
Operating profit	120,000
Interest	(10,000)
Tax	(22,000)
Net profit	88,000

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Gross Profit vs Net Profit

Measure	Formula	What It Shows
Gross profit	Revenue − Cost of sales	How much profit is made from buying/making and selling goods
Net profit	Gross profit − Expenses − Interest − Tax	The final profit after ALL costs have been deducted

A business can have a high gross profit but a low net profit if its operating expenses are very high. For example, a restaurant may sell food at a high markup (high gross profit) but spend heavily on rent, staff, and utilities (reducing net profit).

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Profit Margins

Profit margins express profit as a percentage of revenue:

Margin	Formula	Interpretation
Gross profit margin	(Gross Profit ÷ Revenue) × 100	How efficiently the business is producing its goods
Net profit margin	(Net Profit ÷ Revenue) × 100	How efficiently the business is managing ALL its costs

Worked Example

Using the income statement above:

• Gross profit margin = (£300,000 ÷ £500,000) × 100 = 60%
• Net profit margin = (£88,000 ÷ £500,000) × 100 = 17.6%

The business keeps 60p of every £1 in revenue after paying for the goods it sells, but only 17.6p of every £1 after all costs.

flowchart TD
    A["Revenue<br/>Total sales income"] --> B{"Subtract<br/>Cost of Sales"}
    B --> C[Gross Profit]
    C --> D["Gross Profit Margin %<br/>= Gross Profit / Revenue x 100"]
    C --> E{"Subtract<br/>Operating Expenses"}
    E --> F[Operating Profit]
    F --> G{"Subtract<br/>Interest + Tax"}
    G --> H["Net Profit<br/>’The bottom line’"]
    H --> I["Net Profit Margin %<br/>= Net Profit / Revenue x 100"]
    D -.measures.-> J[Production efficiency]
    I -.measures.-> K[Overall cost control]

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Using Income Statements

Stakeholders use income statements for different purposes:

Stakeholder	Use of Income Statement
Owners/managers	Assess profitability; identify areas for cost reduction; make strategic decisions
Investors	Evaluate whether the business is a good investment
Banks	Assess whether the business can repay a loan
Employees	Judge the financial health of their employer
HMRC	Calculate the tax the business owes
Competitors	Benchmark their own performance against rivals

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How to Improve Gross Profit

1. Increase revenue — sell more units or raise prices.
2. Reduce cost of sales — find cheaper suppliers, negotiate better deals, reduce waste.
3. Increase prices — if demand is price inelastic, higher prices increase gross profit.

How to Improve Net Profit

1. Improve gross profit — using the strategies above.
2. Reduce operating expenses — cut overheads such as rent, utilities, or staffing costs.
3. Reduce interest payments — pay off loans or refinance at a lower rate.

Exam Tip: In the exam, you may be given an income statement and asked to calculate gross or net profit, or profit margins. Always show your working clearly and use the correct formula.

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Summary

• An income statement shows a business's revenue, costs, and profit over a period.
• Gross profit = Revenue − Cost of sales.
• Net profit = Gross profit − Operating expenses − Interest − Tax.
• Profit margins express profit as a percentage of revenue.
• Stakeholders use income statements to assess profitability and financial health.
• Businesses improve profitability by increasing revenue, reducing costs, or both.

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UK case study: JD Wetherspoon's income statement under pressure

JD Wetherspoon, the UK pub chain founded by Tim Martin in 1979, operates around 800 pubs across the UK and Ireland. Its income statement provides a revealing case study of how external pressures can squeeze profitability even at a well-run, high-revenue business.

In its 2023 annual results, Wetherspoon reported revenue of around £1.9 billion — a strong figure driven by the recovery of UK pub visits after the COVID-19 pandemic. However, the company's gross profit margin had narrowed compared to pre-pandemic years. Why? Because cost of sales — the direct cost of beer, food, wine and spirits — had risen sharply due to global supply chain disruption, higher energy costs for suppliers, and the impact of the war in Ukraine on wheat and cooking oil prices. Wetherspoon imports significant amounts of lager and wine, and the weak pound made these imports more expensive.

Further down the income statement, operating expenses had also risen. Tim Martin publicly complained that Wetherspoon's energy bills had more than doubled between 2021 and 2023, while the increase in the National Living Wage (to £11.44 from April 2024) added tens of millions of pounds to the staff cost line. Business rates on high-footfall pub locations remained a heavy overhead. As a result, despite record revenue, net profit in 2023 was only around £42 million — a net profit margin of just over 2%, compared to around 6–7% in pre-pandemic years.