The Income Statement

The income statement — also called the P&L, or profit and loss statement — answers one question: did the business make money during this period? Not "does the business have money" — that is the balance sheet. Not "did cash move" — that is the cash flow statement. The P&L tells you whether revenue exceeded expenses. That is it. Every line item is a step from the top line (revenue) to the bottom line (net income). If you can read this document, you can evaluate any business in sixty seconds.

1. Revenue (Top Line) Total money earned from selling products or services. In SaaS, this is typically Annual Recurring Revenue (ARR) recognized monthly. Revenue is the most celebrated number in business and the least informative by itself. A company doing $10M in revenue could be wildly profitable or hemorrhaging cash. The top line tells you scale. It tells you nothing about health.
2. Cost of Goods Sold (COGS) The direct costs of delivering what you sold. For a software company: hosting, third-party API costs, customer support headcount directly tied to delivery. Revenue minus COGS equals Gross Profit. Gross margin — gross profit divided by revenue — is the first number I look at. Below 60% in SaaS means your unit economics are broken before you spend a dollar on sales or marketing.
3. Operating Expenses (OpEx) Everything else: sales and marketing (S&M), research and development (R&D), general and administrative (G&A). Gross profit minus OpEx equals Operating Income (EBIT). This is where companies either demonstrate financial discipline or reveal that they are buying growth with investor capital and calling it a strategy.
4. Net Income (Bottom Line) Operating income minus interest, taxes, and non-operating items. The final answer to the P&L question: did we make money? A positive bottom line is profit. A negative bottom line is loss. Simple — but the path from top to bottom is where the real story lives.