The Income Statement
Read an income statement from revenue down to net income, and see what each subtotal reveals.
TL;DR
- Read the
incomeStatementfrom revenue down to net income. - Subtract costs in layers to reveal
grossProfitand operating income. - Turn each subtotal into a
marginto compare profitability.
What It Shows
Over a PeriodIt covers a span, like a month or year.
A span of time, not a dayTop to BottomStart at revenue and subtract down to profit.
Revenue at the topThe Bottom LineNet income is what is left at the end.
Revenue - all costs = net incomeAlso Called P&LProfit and loss statement is the same thing.
Income statement = P<he Layers
RevenueAll sales earned during the period.
Top lineCost of Goods SoldThe direct cost of what you sold.
Revenue - COGS = gross profitOperating ExpensesRent, wages, marketing, and overhead.
Gross profit - opex = operating incomeInterest and TaxesSubtract these to reach the bottom line.
Operating income - these = net incomeMargins
Gross MarginGross profit as a share of revenue.
Gross profit / revenueOperating MarginOperating income as a share of revenue.
Operating income / revenueNet MarginThe share of revenue kept as profit.
Net income / revenueCompare Over TimeTrends in margins reveal more than one period.
Watch the directionRead It Well
Follow the TrendCompare periods, not just this one.
This month vs lastFlag One-OffsSeparate unusual items from normal operations.
Windfalls and one-time lossesMind Non-Cash CostsDepreciation lowers profit but moves no cash.
Profit down, cash unchangedNot the Whole StoryPair it with the balance sheet and cash flow.
One of three viewsTips
- Watch
grossMarginover time; a slipping gross margin warns you about rising costs or falling prices before net income does. - Separate one-time items from regular
operatingIncome, so a single windfall or loss does not distort how the business really performed.
Warnings
- Net income is not
cash; it can include sales not yet collected and costs like depreciation that moved no money. - A rising top-line
revenuecan still hide shrinking profit if costs are climbing faster, so read every line, not just sales.
In Practice
Walk a year of sales down through each layer to the bottom line.
Your business earns $120,000 in revenue, with $70,000 in direct product costs, $30,000 in operating expenses, and $4,000 in interest and taxes.
- Gross profit: $120,000 - $70,000 = $50,000.
- Operating income: $50,000 - $30,000 = $20,000.
- Net income: $20,000 - $4,000 = $16,000.
- Net margin: $16,000 / $120,000 = about 13%.
The year ends with $16,000 of net income, a 13% net margin.
Each subtotal, gross, operating, and net, tells a different part of the story.
FAQ
An income statement, also called a profit and loss statement, shows how much a business earned and spent over a period, such as a month or year. It starts with revenue at the top and subtracts costs in layers to arrive at net income, the bottom line. Unlike a balance sheet, it covers a span of time, not a single day.
Gross profit is revenue minus the direct cost of what you sold. Net income is what remains after every other cost, operating expenses, interest, and taxes, is also subtracted. Gross profit shows how profitable the product itself is; net income shows what the whole business kept.
A margin expresses profit as a percentage of revenue, which makes businesses of different sizes comparable. Gross margin is gross profit divided by revenue; net margin is net income divided by revenue. A 13% net margin means the business keeps about 13 cents of every dollar of sales.
Because the income statement follows accrual rules. It counts revenue when earned, even if the customer has not paid, and counts costs like depreciation that involve no cash outflow. A business can post strong net income while its bank balance falls, which is why the cash flow statement exists.