Income Statement Explained: Revenue, Costs and Profit

The income statement — also known as the profit and loss account (P&L) — is one of the three core financial statements. It shows how much revenue a company generated during a period, what costs it incurred, and the resulting profit or loss. Understanding the income statement is fundamental to financial accounting, management accounting, and financial analysis.

What Is an Income Statement?

The income statement reports a company's financial performance over a specific period of time — typically one year, though companies also prepare quarterly and interim statements. Unlike the balance sheet, which is a snapshot at a point in time, the income statement covers a period (e.g., "for the year ended 31 December 2024"). It answers the fundamental question: did the company make a profit or a loss during this period?

Key Line Items in an Income Statement

Revenue (Turnover)

Revenue — also called sales, turnover or income — is the total amount generated from selling goods or providing services during the period. It is reported at the top of the income statement and before deducting any costs. Under IFRS 15, revenue is recognised when control of goods or services transfers to the customer.

Cost of Sales (Cost of Goods Sold)

Cost of sales represents the direct costs of producing the goods or services sold — typically raw materials, direct labour and direct overheads for manufacturers, or the purchase cost of inventory for retailers. Revenue minus cost of sales equals gross profit.

Gross Profit

Gross profit shows how much profit is generated from core trading activities before overhead costs. The gross profit margin (gross profit as a percentage of revenue) is a key indicator of operational efficiency and pricing power.

Operating Expenses

Operating expenses are the indirect costs of running the business — administration costs, distribution costs, marketing, research and development, and depreciation of assets. Deducting operating expenses from gross profit gives operating profit (also called EBIT — earnings before interest and tax).

Finance Costs and Tax

Below operating profit, the income statement deducts finance costs (interest on borrowings) and income tax to arrive at net profit after tax — the "bottom line" that flows into retained earnings on the balance sheet.

Single-Step vs Multi-Step Income Statements

A single-step income statement lists all revenues together and all expenses together, showing one calculation of net income. A multi-step income statement (more common for larger companies) separates gross profit, operating profit and net profit as distinct subtotals, providing more analytical insight. Most professional accounting exams test the multi-step format.

Frequently Asked Questions

What is the difference between profit and cash?

Profit (as shown on the income statement) and cash are not the same. Profit is calculated on an accruals basis — revenue is recognised when earned and expenses when incurred, regardless of when cash changes hands. The cash flow statement shows actual cash movements and reconciles profit to cash.

What does a negative net profit mean?

A negative net profit — a net loss — means the company spent more than it earned during the period. This reduces retained earnings on the balance sheet. A single year of losses is not necessarily catastrophic, but sustained losses erode equity and can threaten the company's ability to continue as a going concern.