What does an income statement tell me?

It shows revenue, costs, and profit over a period. It helps you evaluate a company's profitability trend.

Quick Definition

An income statement (P&L) shows revenues, costs, and profit over a period. Key items: revenue growth, gross margin trend, and net income. It answers: is the company consistently profitable?

Use this concept with tools

After-tax Return

Flat tax model for after-tax projection.

Payback Period

Time to recover initial outlay from cashflows.

Position Sizing + Kelly

Risk-based position size and Kelly fraction.

Related concepts

What are the three core financial statements?

The three financial statements are: Income Statement (profit & loss over a period), Balance Sheet (assets, liabilities & equity at a point in time), and Cash Flow Statement (actual cash movements).

How are the three statements connected?

Net income (Income Statement) flows into retained earnings on the Balance Sheet. The Cash Flow Statement bridges the two, explaining why cash changed. Inconsistencies between statements can signal accounting issues.

What is the difference between gross margin and net margin?

Gross margin = (Revenue − COGS) ÷ Revenue. Net margin = Net Income ÷ Revenue. Gross margin shows production efficiency; net margin shows overall profitability after all expenses and taxes.