What is an income statement?

What is an income statement?

An income statement, also called the profit and loss statement, adds up revenue, subtracts costs, and shows the profit left for a period, usually a quarter or a year. It runs from top line to bottom line.

Unlike the balance sheet, a snapshot, the income statement is a movie. It covers a set period, interim, monthly, quarterly, semi-annual, or annual, and sets the latest figures beside an earlier comparative period. Always check the period. A strong quarter and a strong year are very different claims.

How does the income statement flow?

It runs from top to bottom. Revenue is money from sales. Subtract cost of goods sold to get gross profit. Subtract operating expenses to get operating income. Remove interest and taxes to reach net income, the bottom line.

Run the numbers. A company with $1,000,000 in revenue and $600,000 of cost of goods sold shows $400,000 of gross profit. Subtract $250,000 of operating expenses for $150,000 of operating income. Interest of $20,000 and tax of $27,300 at 21% leave net income of $102,700.

What are the four levels of profitability?

The multi-step statement shows profit at four rising levels: gross profit, operating income, pretax income, and net income. Each strips away one more layer of cost. Net margin, net income over revenue, is the headline ratio you benchmark. A simpler single-step format lists all revenue and expenses together.

Gross profit reflects pricing and direct cost control. Operating income shows how the core business runs before financing. Pretax income adds interest income and expense. Net income is what is left for shareholders.

Beyond the four levels sits a yardstick your valuation peers love: EBITDA, earnings before interest, taxes, depreciation, and amortization. It sets aside financing and non-cash charges to isolate how the operating business earns money. It is not a formal GAAP profit line, just a handy lens.

Presentation is a choice. Expenses can be grouped by nature, the raw materials, payroll, and depreciation, or by function, the cost of sales, selling, and administrative buckets. A by-nature format shows no gross profit, and a presenter using functions must still disclose depreciation and employee benefits by nature.

What are the operating and non-operating sections?

The statement is split. The operating section covers your daily core business: sales revenue, cost of goods sold, and operating expenses. Selling, general, and administrative expenses, known as SG&A, fill that last bucket: salaries, rent, and advertising. It dominates the page for a going concern.

The non-operating section holds interest income and expense plus gains and losses from one-off events, like selling an old plant. They are not part of everyday operations, but they still hit the bottom line.

The statement also sets irregular items apart from routine business. Discontinued operations, a closed division or product line, appear separately, net of tax. Extraordinary items, unusual one-off events, and the cumulative effect of a change in accounting principle once landed here too, though both are rare in modern reports.

Why does the income statement matter to you?

It is the report of profitability, the driver of shareholder value. Earnings per share comes from net income, and most valuations rest on that. Investors use it to spot trends, management uses it to cut costs, and creditors use it to judge whether a company can pay its debts.

Earnings per share comes in two forms. Basic EPS divides net income by shares currently outstanding. Diluted EPS assumes every option, warrant, and convertible bond converts, so the share count rises and EPS falls. Diluted is the more conservative, reliable number.

What are the limits of the income statement?

It tells you about profit, not cash. Income can be recognized before cash arrives, and depreciation is a non-cash charge. A company can show healthy profit while cash drains elsewhere. To see real money, turn to the cash flow statement.

It also leaves judgment in management's hands. FIFO versus LIFO and depreciation choices shift reported profit within the rules. Read the footnotes; they explain income taxes, stock options, and retirement plans. It omits what cannot be measured, so read it with the balance sheet and cash flow.

Accrual accounting vs cash-basis accounting

Every income statement runs on accrual accounting. Revenue is booked when earned, expenses when matched to it, regardless of when cash moves. Cash-basis records note money only when it changes hands. Nonprofits issue a statement of activities instead, sorting funding sources from program and administrative costs.

How do you analyze an income statement?

Vertical analysis turns every line into a percentage of revenue. Gross profit, operating income, and net income each appear as a share of sales, so you compare costs across companies and periods without juggling dollar sizes. Cost of goods sold creeping from 60% to 70% signals lost pricing power.

Horizontal analysis compares the same line across periods. You lay the current income statement beside the prior one and measure how revenue and expenses moved from year to year. It reveals whether growth is real and where it comes from.

Use both together. Vertical shows the shape of one period, horizontal shows how that shape is changing. A single statement is a point in time; comparing several is what turns the report into a trend you can act on.

What is comprehensive income?

Comprehensive income is net income plus other comprehensive income, the non-owner equity changes that never touch the income statement but still alter what a company is worth. An unsold security that climbed, a foreign subsidiary's currency move, a pension plan's shifting obligations: each lands there.