Normal Profit
What is Normal Profit?
Normal profit is the minimum return needed to keep a firm in business, equal to the opportunity cost of the owner's resources.
It is the implicit cost of entrepreneurship and is included in economic profit calculations. When economic profit is zero, the firm is earning normal profit, meaning it is covering all costs, including opportunity costs.
Normal Profit: a worked example
A tutoring company sells 10,000 sessions a year at $12 each, giving revenue of $120,000. Explicit costs for tutors, software, and rent come to $95,000, so the books show $25,000 left over. The owner gave up a $22,000 part-time salary plus $3,000 of interest on savings placed into the firm, making implicit costs $25,000 as well. Economic profit is $25,000 minus $25,000, which is exactly zero, and zero economic profit is the definition of earning normal profit. That $25,000 on the books is precisely the payment required to keep the owner's time and money in this business rather than the next-best use. Total economic cost of $120,000 spread over 10,000 sessions puts average total cost at $12, sitting right on the $12 price.
The mistake students make with normal profit
Zero economic profit reads like failure, so students write that a firm earning normal profit makes nothing and ought to shut down. The owner is in fact collecting accounting profit equal to every opportunity surrendered, the same return the next-best alternative would have paid. Nobody inside the industry has a reason to leave and nobody outside has a reason to enter, which is why long-run equilibrium under perfect competition lands exactly here. Describe the firm as breaking even in economic terms rather than earning nothing.
Normal Profit questions
Is zero economic profit a bad outcome for a firm?
Zero economic profit means the owner earns exactly what those resources would have earned in their next-best use, so the firm is doing fine by its own standard. Accounting profit at that point is positive, often substantially so, because implicit costs are what pulled economic profit down to zero. Firms gain a reason to exit only once economic profit turns negative.
Where does normal profit appear on a cost curve diagram?
Normal profit is built into the average total cost curve, because economists count implicit costs as costs. Wherever price equals average total cost at the quantity the firm chooses, the firm collects normal profit and nothing beyond it. Under perfect competition that point sits at minimum average total cost, while a monopolistically competitive firm settles on the downward-sloping stretch of the curve instead. Any gap where price rises above average total cost is economic profit stacked on top of normal profit.
How is normal profit different from accounting profit?
Normal profit is a cost, specifically the opportunity cost of the owner's time and capital, while accounting profit is revenue minus explicit payments alone. A firm reporting $40,000 of accounting profit while carrying $40,000 of implicit costs is earning normal profit and zero economic profit. Anything the books show above that normal level is what economists label economic profit.
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