The economic profit calculator above works in two stages. First it subtracts explicit costs — the money that actually left the bank account — from revenue, which gives accounting profit, the figure that appears on a profit and loss statement. Then it subtracts implicit costs: the income you gave up by putting your own time, premises and capital into this business rather than into the next best alternative. What is left is economic profit, and it answers a different question from the one an accountant answers.
Arb Digital publishes free calculators for the numbers that quietly drive decisions. This one matters because a business can show a healthy accounting profit and still be destroying value for its owner. If the owner forwent a larger salary and tied up capital that could have earned a return elsewhere, the accounting profit may be smaller than what was given up to obtain it. The page shows both figures side by side so the gap between them is visible rather than assumed away.
What This Economic Profit Calculator Does
It totals four categories of explicit cost and three categories of implicit cost, then reports accounting profit, economic profit, and economic profit as a percentage of revenue. The implicit side includes the salary you gave up, the return your own invested capital could have earned elsewhere, and anything else you contribute without charging for it — most often premises you own outright or unpaid work from family.
This is a different question from the one our profit margin calculator and net profit margin calculator answer. Those work entirely with recorded transactions and ignore opportunity cost by design, because that is what a margin is defined to be. Our break-even calculator asks a third question: what volume covers the explicit costs. Economic profit sits above all of them, because it compares the whole venture against what you could be doing instead.
How to Use It
- Enter revenue for a whole period. A year is the usual choice, because implicit costs like a forgone salary are naturally annual.
- List explicit costs only where money moved. Interest you actually paid on a loan belongs here. Interest you could have earned on your own money does not.
- Be honest about the forgone salary. Use what you could realistically earn elsewhere with your skills and experience, not what you would like to earn.
- Set an alternative return you would actually accept. The rate should reflect something with comparable risk, not a risk-free rate applied to a risky business.
- Read both profit figures together. Accounting profit tells you whether the business is solvent. Economic profit tells you whether it is worth continuing rather than doing the alternative.
The Formula and How It's Calculated
Two equations, applied in order. Accounting profit = total revenue − explicit costs. Then economic profit = accounting profit − implicit costs, which expands to total revenue minus explicit costs minus implicit costs. Because implicit costs are never negative, economic profit is always less than or equal to accounting profit, and the two are equal only when the owner contributes nothing unpaid.
Work the defaults through. Revenue is 250,000. Explicit costs total 60,000 + 55,000 + 24,000 + 21,000 = 160,000, so accounting profit is 90,000. On the implicit side, the forgone salary is 75,000 and the 200,000 of own capital could have earned 6%, which is 12,000, giving 87,000 of implicit cost. Economic profit is therefore 90,000 − 87,000 = 3,000, an economic margin of 1.2%. A business showing a 90,000 profit is in fact beating its owner's alternatives by 3,000 — a genuinely different picture from the one the accounts present. OpenStax Principles of Microeconomics covers explicit and implicit costs and both profit measures with a worked example built the same way.
Explicit and Implicit Costs
An explicit cost is a payment. Wages, rent, stock, software subscriptions, insurance and interest on borrowed money are all explicit, and every one of them has a matching entry in the bank statement. Because they are recorded, accounting captures them completely.
An implicit cost is a forgone benefit rather than a payment. Nothing leaves the account, so nothing appears in the accounts, but the cost is real. The three that matter most are the owner's forgone wage, the forgone return on the owner's own capital, and the forgone rent on premises the owner already owns. A shop trading from a building the owner inherited looks cheaper to run than an identical shop next door paying rent — but only in the accounts. Economically the two face the same cost, because the first owner is giving up the rent they could have charged a tenant.
The distinction is not academic bookkeeping. It is the reason a business can look profitable for years while its owner steadily falls behind where they would have been doing something else. Recording implicit costs does not change the bank balance; it changes what the bank balance means.
Why Zero Economic Profit Is Not a Bad Result
Economic profit of zero sounds alarming and is not. It means the venture returns exactly what the same time and money would return in their next best use. Economists call that normal profit, and it is the expected long-run outcome in a competitive market: if a business earned persistent positive economic profit, new entrants would arrive, compete, and push it back toward zero.
So the sign is what matters, not the size. Positive economic profit means you are ahead of your alternatives and there is a reason to keep going. Zero means you are level, and the decision turns on things this calculation does not measure — how much you enjoy the work, how much control you have, how the risk compares. Negative economic profit means the alternatives are ahead, which is information rather than a verdict, because a young business can run at an economic loss deliberately while it builds something that will earn more later.
Costing Your Own Capital
The most commonly omitted implicit cost is the return on the owner's own money. Debt has an obvious price — the lender sends an invoice — while equity looks free because nobody bills for it. It is not free. Money put into the business could have been invested elsewhere, and that forgone return is a genuine cost of using it here.
Choosing the rate is the judgement call. Using a savings rate understates it, because the business carries far more risk than a deposit account and should be compared against something of similar risk. Using a venture-capital target rate overstates it for a stable local business. A defensible approach is to take the return on an investment you would genuinely have made instead, then run the calculation again at a rate a few points either side to see whether the conclusion changes. Our WACC calculator formalises the same idea as a blended cost of debt and equity, and our NPV calculator applies a discount rate to future cash flows rather than a single period.
Sunk Costs Are Not Opportunity Costs
A sunk cost is money already spent that cannot be recovered no matter what you decide next. It is not an opportunity cost and it should never enter this calculation as one. If you spent 40,000 on equipment two years ago and it has no resale value, that 40,000 is gone and is irrelevant to whether continuing is worth it now.
What does belong is the current opportunity cost of the assets you still hold. If the equipment could be sold today for 10,000, then keeping it in the business costs you 10,000 of forgone proceeds plus whatever that money could earn — and that is a real implicit cost of continuing. The test is always forward-looking: what could this asset, this time or this money do instead, starting today. Treating unrecoverable past spending as a reason to continue is the sunk cost fallacy, and framing decisions in economic-profit terms is one of the more reliable ways to avoid it. The related distinction between inputs you can change quickly and inputs you cannot is set out in OpenStax's section on production in the short run, and it is what decides which costs are genuinely still in play.
Where the Two Figures Point Different Ways
The gap between accounting and economic profit is widest in owner-operated businesses, where a large share of the labour and capital is contributed rather than purchased. A consultancy billing 250,000 a year with 160,000 of explicit costs looks strong until the founder's alternative salary is counted, at which point the margin above the alternative can be very thin.
It also matters when comparing options that use resources differently. Two ventures with identical accounting profit are not equivalent if one ties up 500,000 of your own capital and the other ties up 50,000. Economic profit charges for that difference and the accounts do not. The same logic applies to marketing spend: a channel that shows a positive return in the accounts may still be the wrong choice if the same budget would have earned more in another channel — that comparison is what our marketing ROI calculator and contribution margin calculator are built for.
Arb Digital measures channels against what the same budget would have earned elsewhere, not just against zero.
Explore Web Growth Talk To Our TeamCommon Mistakes to Avoid
- Counting the owner's drawings as a wage — if you pay yourself below market rate, the shortfall is an implicit cost, and if you pay yourself above it, the excess is not a cost of the business at all.
- Double-counting interest — interest actually paid to a lender is explicit. The forgone return on your own capital is implicit. Entering the same money in both places understates profit twice.
- Including sunk costs — money already spent and unrecoverable does not change what the next decision should weigh.
- Using a risk-free rate for a risky business — the alternative should carry comparable risk, or the implicit cost is understated and economic profit is flattered.
- Reading zero economic profit as failure — it means the venture matches its alternatives exactly, which is the normal competitive outcome rather than a warning.
Related Free Tools From Arb Digital
Work out recorded margins with the profit margin calculator, find the volume that covers your fixed costs with the break-even calculator, blend a cost of capital with the WACC calculator, discount future cash flows with the NPV calculator, or see what each extra sale contributes with the contribution margin calculator. The full free online tools hub lists every business tool we publish.
Frequently Asked Questions
It is total revenue minus both explicit costs and implicit opportunity costs. It measures what a venture earns above what the same time and money would have earned in their next best use.
Accounting profit subtracts only explicit costs, the payments that actually left the account. Economic profit subtracts implicit costs as well, so it is always the smaller of the two figures.
Any benefit given up by using a resource here rather than elsewhere. The main ones are the owner's forgone salary, the forgone return on the owner's own capital, and forgone rent on premises the owner already owns.
No. It is called normal profit and it means the venture is earning exactly what the alternatives would earn. In a competitive market it is the expected long-run outcome.
Yes, and it is common in owner-run businesses. If the accounting profit is smaller than the salary and investment return the owner gave up, economic profit is negative even though the accounts show a surplus.
No. Money already spent and unrecoverable cannot be affected by the next decision, so it is not an opportunity cost. Only what a resource could do from today onward belongs in the calculation.
A return on something you would genuinely have invested in instead, with comparable risk. Testing the calculation at a few points either side shows whether the conclusion depends on that choice.
This page explains an economics calculation for educational purposes only. It is not financial, investment or accounting advice, and no figure produced by it should be relied on for a business decision without input from a qualified professional.
