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The Income Statement, Top to Bottom

beginner8 min read

A guided walk from revenue down to net profit, with every line in plain English.

The income statementA record of revenue, costs and profit over a period. (or P&LA record of revenue, costs and profit over a period.) answers one question: did the company make a profit, and how? It’s just the revenue → costs → profit chain from the last module, written out as a waterfall from the top line down to the bottom line.

  1. Revenue (sales) — the money coming in. The “top line.”
  2. − Cost of goods sold → Gross profit.
  3. − Operating expenses (salaries, marketing, R&D) → Operating profitEarnings before interest, tax, depreciation, amortisation. (EBIT).
  4. − Interest and tax → Net profit. The “bottom line.”
Read the income statementA record of revenue, costs and profit over a period. as a waterfall: revenue pours in at the top, and at each step a layer of cost is subtracted, until what trickles out the bottom is the owners’ profit. Once you see it as one falling stream, the jargon (gross, operating, net) is just labels for where you are in the fall.

The two numbers that matter most are usually the top (is revenue growing?) and the bottom (is profit growing, and faster than revenue?). The lines between explain why.

Key takeawayThe income statementA record of revenue, costs and profit over a period. is a top-to-bottom waterfall from revenue through layers of cost to net profit — read it as one falling stream.
FAQs
Income statement vs balance sheet — what’s the difference?

The income statement covers a *period* (a quarter/year) — how much was earned and spent. The balance sheet is a *snapshot* at one moment — what the company owns and owes. You need both, plus the cash flow statement.