Plain definition
An income statement, or statement of profit or loss, reports revenue earned and expenses incurred over a period, producing profit or loss for that period. It explains operating performance, not the timing of every cash movement. Revenue may be earned before collection, and an expense may be incurred before payment, so its bottom line must be read with the cash-flow statement and balance sheet.
Illustrative example
Monetary examples use Saudi riyals (SAR). The same principles apply in other currencies.
A distributor earns of June revenue and incurs of cost of sales plus of operating expenses. Its June profit is . Yet customers have not paid of the sales, and the company paid a supplier invoice from May. The profit shows June's economic result; the bank movement reflects collection and payment timing as well.
The figures are hypothetical. Profit depends on correct revenue recognition, cut-off, estimates, and classification, not simply invoices issued minus cash paid.
Why it matters
A CEO who treats profit as cash may approve spending that the bank cannot fund. A CEO who sees a low-cash month as a loss may cut a profitable activity whose customers are merely paying later. The statement gives the operating question; the other statements complete the liquidity question.
Practical consequence
Review the statement by major driver: sales volume and price, cost of sales, payroll, overhead, and unusual items. Compare actual results with prior periods and plan, then trace material variance to source records and accountable owners. Separate recurring operating performance from one-off gains or costs, and test whether the related cash collection or payment plan is realistic.