Definition
An income statement is a financial statement summarising revenue, costs of sales, gross profit, operating expenses, interest, tax, and net profit (or loss) over a defined accounting period. It is used to assess the profitability of a business and as the starting point for the tax computation. The income statement is generated automatically by modern accounting platforms from the revenue and expense accounts in the general ledger.
What an income statement means in practice
For a bookkeeper, the income statement is the period summary of what the business earned and what it cost to earn it. It runs from revenue at the top down to net profit at the bottom in a structured cascade. Each line is a sub-total that lets the reader see margin at a different stage.
The standard layout: revenue minus cost of sales equals gross profit. Gross profit minus operating expenses (salaries, rent, marketing, professional fees) equals operating profit. Operating profit minus interest expense plus interest income equals profit before tax. Profit before tax minus tax expense equals net profit (or loss). The net profit flows into retained earnings on the balance sheet, completing the link between the two statements.
A practical example: a UK consultancy for the year ended 31 March 2027. Revenue 380,000. Cost of sales (subcontractors) 95,000. Gross profit 285,000. Operating expenses (salaries 140,000, rent 18,000, software 12,000, marketing 8,000, professional fees 7,000, other 15,000): 200,000. Operating profit 85,000. Interest expense 2,000. Profit before tax 83,000. Corporation tax at 25% = 20,750. Net profit 62,250. The 62,250 increases retained earnings on the balance sheet from 60,000 (prior year close) to 122,250 (current year close), assuming no dividend.
How the income statement works by country
United Kingdom
Required under section 394 of the Companies Act 2006. Format follows FRS 102 Section 5 for medium and large entities or FRS 105 Section 6 for micro-entities. The income statement (profit and loss account) is the starting point for the corporation tax computation under Corporation Tax Act 2009 and CTA 2010. The accounting profit is adjusted for non-deductible items and capital allowances to arrive at taxable profit.
Australia
Required under AASB 101 Presentation of Financial Statements. The formal AASB title is “Statement of Profit or Loss and Other Comprehensive Income” but most AU practices call it the profit and loss statement informally. Lodged with ASIC for non-exempt entities (above the small proprietary company thresholds).
Canada
Required under ASPE Section 1520 (Income Statement) for private companies that have not adopted IFRS, or IAS 1 for public companies and electing private companies. The Canadian convention in published statements is “Statement of Operations” rather than “Income Statement” but the substance is identical. Used as the starting point for the T2 corporate tax return.
New Zealand
Required under the NZ IFRS framework. Tier 1 and Tier 2 entities present a “Statement of Profit or Loss” or a “Statement of Profit or Loss and Other Comprehensive Income”; some not-for-profit Tier 3 entities present a “Statement of Surplus or Deficit”. The substance is the same.
Singapore
Required under SFRS(I) 1. The formal title is “Statement of Profit or Loss and Other Comprehensive Income” for the full statement; informal use of “profit and loss” or “income statement” is universal in everyday Singapore practice.
Related terms
The income statement is one of the four primary financial statements:
- Profit and loss is a synonym for income statement.
- The balance sheet shows the resulting state at period end.
- The statement of cash flows reconciles net profit to actual cash movements.
- The statement of changes in equity shows how net profit flows into retained earnings.
- Net profit is the bottom line of the income statement.
- Revenue recognition determines when revenue can hit the top of the income statement.
See also
For the practical mechanics of running an income statement (P&L) in Xero or QuickBooks Online, see the per-software workflow guides as they ship.
FAQ
See the answered questions above for income statement vs P&L, where net profit flows after the statement, and the income statement cascade.