Economic Profit Explained

Economic profit is the difference between total revenue and total cost. Total cost includes both explicit costs (out-of-pocket payments) and implicit costs (opportunity costs of resources used).

The formula is: $ \text{Economic Profit} = \text{Total Revenue} - (\text{Explicit Costs} + \text{Implicit Costs}) $

Zero Economic Profit Condition

A situation of zero economic profit occurs when:

• Total Revenue equals Total Cost.
• $ \text{TR} = \text{TC} $
• This means $ \text{TR} = \text{Explicit Costs} + \text{Implicit Costs} $

Normal Profit Definition

Normal profit is the minimum level of profit needed for a company to remain competitive in the market. It represents the opportunity cost of the entrepreneur's time and investment. Importantly, normal profit is considered part of the total cost (specifically, the implicit cost) in economic analysis.

Linking Zero Profit and Normal Profit

When economic profit is zero, the firm's revenue is just sufficient to cover all explicit costs and the implicit costs, which includes the normal profit. The firm is earning enough to satisfy its owners and investors, covering the opportunity cost of their resources.

Therefore, a zero economic profit means the firm is earning a normal profit.