How this instrument works
Economic profit takes accounting profit — the figure already sitting on the books — and subtracts implicit costs: the value of resources the owner supplied for free, most often their own labor and whatever the business's invested funds could otherwise be earning. Unlike explicit costs, nothing here comes from an invoice; implicit costs are a judgment call about what those same resources would fetch doing something else instead.
When economic profit lands at exactly zero, economists call it normal profit — the business is covering every cost, including the opportunity cost of the owner's time and money, without beating it. That is a very different statement from zero accounting profit, which would mean the business failed to cover even its cash bills. A firm can run for years at normal profit and still be, by this measure, exactly as good a use of the owner's resources as their next best alternative.
A freelance consultant weighing a return to salaried work, a franchise owner comparing a location against selling the lease, and an economist explaining why competitors keep entering a profitable niche until the extra profit disappears — all lean on this same subtraction. Its honesty depends entirely on the implicit-cost estimate fed into it: understate the forgone salary or the return that capital could earn elsewhere, and a business quietly losing ground looks like a winner.
- Enter Accounting profit, $ — the figure already on the books, revenue after every cash cost is paid.
- Enter Implicit costs (e.g. forgone salary), $ — your best estimate of the wage and capital return the owner gave up by choosing this instead.
- Read Economic profit — the instrument subtracts one from the other instantly.
- Raise Implicit costs (e.g. forgone salary), $ until Economic profit crosses zero — that marks the normal-profit break-even point.
Worked example — the $80,000 salary given up
Set Accounting profit, $ to 150,000 and Implicit costs (e.g. forgone salary), $ to 80,000 — a consultant who left an $80,000 corporate salary to run an independent practice, whose books show $150,000 of accounting profit for the year. Economic profit computes as 150,000 minus 80,000, which comes to 70,000.
That $70,000 is the number that actually answers whether leaving the corporate job paid off: it is what the practice earned above and beyond the salary the consultant walked away from. Had Implicit costs (e.g. forgone salary), $ instead reached 150,000 — a rarer specialty commanding a higher forgone wage — Economic profit would fall to zero, the normal-profit line where staying independent and returning to salaried work are worth exactly the same.
Questions
What exactly counts as an implicit cost?
Anything the owner supplies to the business without being paid a market rate for it — most commonly the wage a comparable job elsewhere would pay them, and whatever return their invested funds could pull in some other venture. Some analysts also add a market rent for owned property the business occupies rent-free. None of these show up on an invoice; each is an estimate of what the resource would fetch in its next best use, which is why the total is more judgment call than bookkeeping entry.
What does an Economic profit of exactly zero mean?
It marks normal profit — the point where the business earns precisely as much as the owner's time and capital would have earned in their next best alternative, no more and no less. Economists treat normal profit as the break-even line for the decision to keep running the business at all, not as a warning sign the way zero accounting profit would be, since Accounting profit, $ can stay comfortably positive the whole time this holds.
Can a business with strong accounting profit still show negative economic profit?
Yes, whenever Implicit costs (e.g. forgone salary), $ exceeds Accounting profit, $. A specialist earning $120,000 in Accounting profit, $ who gave up a $140,000 salary to work independently shows Economic profit of −$20,000: the practice is profitable on paper, but the specialist would be $20,000 ahead taking the job instead. Nothing about the cash in the bank changes — only the comparison against the road not taken.
Do economists use this figure to explain why competitors enter or leave a market?
Yes. Positive economic profit signals a business earning more than its opportunity cost, which in a competitive market draws new entrants until added supply erodes prices and pushes profit back toward zero, or normal profit. Economic profit that stays well above zero for years usually means something is blocking entry — a patent, a license, a scarce location, or another real barrier keeping competitors out.
Is this the same calculation as EVA, Economic Value Added?
Related, not identical. EVA is a corporate-finance metric used to judge a division or company, built from after-tax operating profit minus a capital charge sized to a blended, weighted cost of the firm's debt and equity. Economic profit as defined here is the older, simpler microeconomics version — accounting profit minus the owner's own forgone wage and capital return — sized for a single proprietor or small business rather than a public company's balance sheet.
References
- U.S. Small Business Administration — Manage your business finances
- OpenStax (Rice University) — Principles of Economics
Read this first: This instrument shows arithmetic, not advice. Real offers add fees, taxes and terms that vary by lender and place — verify the figures against your actual paperwork before deciding anything.