Profitability is profit measured against whatever produced it, which is why the measures that carry the name are stated as a ratio or a percentage rather than as a dollar amount. The base underneath it changes with the question being asked: revenue for a margin, assets or equity for a return. Profit is the amount, and profitability is that amount divided by a base.
Profit and Profitability Answer Different Questions
Profit is a figure on one closed period’s income statement, and the order of subtractions that reaches it is set out in net income. Profitability divides that figure by a base, so it reports a rate rather than a size. Operating margin is the plainest published form of it, showing for each dollar of sales what percentage was profit (SEC, Beginners’ Guide to Financial Statements), and its terms are set out in net profit margin.
Because a base sits underneath, profit and profitability can move apart. A business can earn more profit than last year and still be less profitable, when the base it is divided by grew faster than the profit did. The same profit figure also reads differently against different bases.
net income 120,000
against revenue 1,000,000 -> 12%
against average total assets 600,000 -> 20%Neither reading is wrong. They answer different questions about the same period.
The Families, and What Each One Divides By
Margin ratios divide a profit figure by revenue, so they report what share of each sales dollar survived to that point on the statement, down to net profit margin at the bottom. Contribution margin ratio divides by revenue too, but it splits costs by behavior rather than by position on the statement, so it does not sit on that ladder.
Return ratios divide by a balance sheet base instead. Return on assets divides by the assets held while the profit was being earned (return on assets), and return on equity divides by the owners’ residual claim, so borrowing moves the answer even when profit does not (equity multiplier).
What the Ratio Depends On in a Firm’s Work
The profit figure and the base both come out of a close, so a ratio inherits whatever that close got wrong. An accrual nobody booked, or a cut-off that slipped, gives a ratio that is precise about the wrong period.
Return ratios add a second problem. A period figure set against one balance sheet date is a flow measured against a point, so the averaging convention has to be stated before the answer means anything, and the choice it involves is worked through in return on assets.
What Profitability Is Confused With
Liquidity asks whether obligations can be met now. An income statement can tell you whether a company made a profit, while a cash flow statement can tell you whether it generated cash (SEC, Beginners’ Guide to Financial Statements), and the balance sheet form of that question is in quick ratio.
Solvency asks whether everything owed can be covered over the long run, a reading of the whole balance sheet whose opposite, insolvent, is the word US bankruptcy and tax law actually define (solvency).
A profitable period proves neither.
Common Questions About Profitability
The rate at which a business turns something into profit, with that something named by the denominator. Quoted without its base, it is an incomplete statement.
Accounting has no exact one-word synonym. The concept travels under the name of whichever ratio is quoted, margin or return, and each of those names its own base. Ordinary usage also treats the word loosely as the state of making a profit at all.
Choose the profit figure, choose the base, divide, and state the result as a percentage. No accounting standard sets which profit figure or which base to pick. Profitability ratios are among the many calculated from information on financial statements rather than presented on them (SEC, Beginners’ Guide to Financial Statements).
Profit is one amount on one closed period. Profitability is that amount over a base, which is why it can fall in a period when profit rises.
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