An income statement (also called a profit and loss, or P&L) answers the most basic business question: did the company make money? It shows revenue, expenses, and profit over a period of time, and reading one is a core Unit 3B skill.
What an Income Statement Shows
An income statement reports a business's financial performance over a period of time — a month, quarter, or year. It starts with the money coming in and subtracts costs step by step until it reaches the profit left over. (Contrast this with a balance sheet, which is a snapshot at a single point in time.)
The Structure, Top to Bottom
Income statements follow a consistent order: Revenue (total sales) minus Cost of Goods Sold (COGS) — the direct cost of making what you sold — gives Gross Profit. Subtract Operating Expenses (rent, salaries, marketing, and other overhead) to get Operating Income. After interest and taxes, you're left with Net Income — the famous “bottom line.”
A Worked Example
Here's a simplified yearly income statement for a small clothing business:
| Revenue | $138,000 |
| Cost of Goods Sold | $46,800 |
| Gross Profit | $91,200 |
| Operating Expenses | $37,200 |
| Net Income (pretax) | $54,000 |
Why It Matters
The income statement tells owners whether the business is profitable, and where the money goes along the way. Gross profit shows how much is left after making the product; net income shows what's left after everything. Investors, lenders, and managers all read it to judge performance and spot problems — like costs rising faster than sales.
Key Takeaways
- An income statement shows revenue, expenses, and profit over a period of time.
- Revenue − COGS = gross profit; gross profit − operating expenses (and interest/taxes) = net income.
- Net income is the “bottom line” — what's left after all costs.
- It reveals profitability and where money is being spent.
Keep Studying
Related: Profit vs. Cash Flow, Break-Even Analysis.
These guides are educational explanations written for the AP Business with Personal Finance course.