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The Daily Insight

What happens when a monopolist engages in perfect price discrimination?

Author

Henry Morales

Published Feb 20, 2026

When a monopolist engages in perfect price discrimination, the marginal revenue curve lies below the demand curve. the demand curve and the marginal revenue curve are identical. marginal cost becomes zero.

How do you calculate perfect price discrimination?

With perfect price discrimination CS is equal to zero since the monopoly is able to capture all of the consumer surplus with its pricing policy. PS is equal to the area under the demand curve and above the supply curve or PS = (1/2)($1000 per unit – $100 per unit)(450 units) = $202,500.

What is price discrimination in monopoly?

In monopoly, there is a single seller of a product called monopolist. The monopolist often charges different prices from different consumers for the same product. This practice of charging different prices for identical product is called price discrimination.

What are examples of price discrimination?

Many industries, such as the airline industry, the arts and entertainment industry, and the pharmaceutical industry, use price discrimination strategies. Examples of price discrimination include issuing coupons, applying specific discounts (e.g., age discounts), and creating loyalty programs.

Why is there no deadweight loss in price discrimination?

There is not deadweight loss, even though there is not consumer surplus (A, which was extracted by the monopoly), and at the end both quantity and price are equal to those that would result from perfect competition.

Is there profit in perfect price discrimination?

Under perfect price discrimination, the marginal revenue curve coincides with the market demand curve, so the monopolist will also produce until marginal cost equals the price of the product. This increases profits shown by the shaded portion of the graph #2 below.

What are the benefits of price discrimination?

Companies benefit from price discrimination because it can entice consumers to purchase larger quantities of their products or it can motivate otherwise uninterested consumer groups to purchase products or services.

What is direct price discrimination?

Direct price discrimination, or third-degree price discrimination, is when you charge customers different prices for the same goods based on identifiable traits. Discounts for senior citizens – an identifiable group based on their age – are an example.

Is there deadweight loss in first degree price discrimination?

A single price strategy in a monopoly market results in a price above marginal cost, creating a deadweight loss. First degree price discrimination is commonly believed to eliminate deadweight loss by charging consumers according to their willingness to pay and transferring consumer surplus to the producer.

What are the disadvantages of price discrimination?

Disadvantages of Price Discrimination

  • Higher prices for some. Under price discrimination, some consumers will end up paying higher prices (e.g. people who have to travel at busy times).
  • Decline in consumer surplus.
  • Potentially unfair.
  • Administration costs.
  • Predatory pricing.

What is an example of first degree price discrimination?

First degree price discrimination – the monopoly seller of a good or service must know the absolute maximum price that every consumer is willing to pay. Examples include airline and travel costs, coupons, premium pricing, gender based pricing, and retail incentives.