--- title: "Third-Degree Price Discrimination | Honors Economics" description: "Third-degree price discrimination is when firms charge different groups different prices for the same good based on demand, segmentation, and market power." canonical: "https://fiveable.me/honors-economics/key-terms/third-degree-price-discrimination" type: "key-term" subject: "Honors Economics" unit: "Unit 4" --- # Third-Degree Price Discrimination | Honors Economics ## Definition Third-degree price discrimination is when an Honors Economics firm charges different groups different prices for the same product based on group demand or willingness to pay. It shows up when a business can split customers into segments and keep them from reselling to each other. ## What It Is Third-degree price discrimination in Honors Economics is a pricing strategy where a firm charges different prices to different groups of buyers for the same product or service. The groups are separated by an observable trait, like age, student status, location, or time of purchase, and each group gets its own price. The big idea is that the firm is not setting one universal price. Instead, it is dividing the market into segments and pricing each segment according to how sensitive that group is to price. If one group is more price elastic, the firm usually charges that group less. If another group is less price elastic, the firm can charge more and still sell. This strategy only works when the business has some market power. A perfectly competitive firm cannot pick different prices for different groups because it is already a price taker. A monopoly, and sometimes firms in oligopoly or monopolistic competition, may have enough control to do this because they face downward-sloping demand and can separate customers. A classic example is student or senior discounts. The business is charging the same movie, museum ticket, or app subscription, but it uses age or status to sort customers into groups with different willingness to pay. Geographic pricing works the same way when a company charges different prices in different regions, often because demand, shipping costs, or local competition are different. For the firm, the goal is to capture more consumer surplus and raise profit. For the market, the result can be mixed. Some buyers pay less than they would under one price, while others pay more. If the lower price helps bring in customers who otherwise would not buy, total sales can increase. But the firm also has to stop resale, or people will buy in the cheap market and sell in the expensive one. In graph terms, you can think of the firm as treating each segment almost like a separate mini-market with its own demand curve. The firm then compares the marginal revenue and marginal cost in each segment, and sets prices so output and profit are adjusted across groups, not just in one blended market. ## Why It Matters Third-degree price discrimination shows up in the market structure unit because it connects pricing power to real business behavior. Once you know how monopoly, oligopoly, and monopolistic competition work, this term helps explain why identical products can be sold at different prices without the product itself changing. It also gives you a cleaner way to read everyday examples. A student discount is not random generosity, it is a pricing choice based on elastic demand. A subscription that costs less in one country may reflect location-based segmentation, not a different product. When you spot the group being targeted, you can explain the firm's profit motive instead of just naming the discount. This term also ties together consumer surplus and elasticity. Firms use price differences to pull more surplus from buyers who are less sensitive to price, while still serving buyers who would leave at a higher price. That makes it a good example of how firms use market power to shape both revenue and access. In essays, class discussion, and problem sets, it is a strong example for answering questions about pricing strategy, market power, and the limits of competition. If you can explain why a firm can segment the market, why it chooses different prices, and what stops resale, you have the full concept. ## Connections ### Price Elasticity of Demand Third-degree price discrimination depends on differences in elasticity across groups. A firm usually charges lower prices to the group with more elastic demand, because that group is more likely to leave if the price is too high. The term makes the pricing choice make sense, since the firm is not guessing, it is responding to how each segment buys. ### Market Segmentation This is the sorting step behind third-degree price discrimination. The firm has to split buyers into groups it can identify, such as students, seniors, or people in different regions. Without segmentation, the firm cannot charge different prices consistently or defend the pricing difference in the market. ### Consumer Surplus Third-degree price discrimination lets a firm take more consumer surplus from groups willing to pay more. Instead of one flat price, the firm pulls extra value out of high willingness-to-pay buyers while still keeping lower-price buyers in the market. That is why the strategy often raises profit more than a single price would. ### [Second-Degree Price Discrimination](/honors-economics/key-terms/second-degree-price-discrimination) These two terms are easy to mix up, but they work differently. Second-degree price discrimination uses the buyer's choices, like bulk discounts or menu pricing, while third-degree uses separate groups identified by the seller. If the customer self-selects the package, that points to second-degree, not third-degree. ## On the AP Exam A quiz question or free-response prompt usually asks you to identify the pricing strategy in a short business scenario. Look for clues like student discounts, regional pricing, or different ticket prices for different age groups, then explain that the firm is separating customers by willingness to pay. If you get a graph or a market structure case, connect the term to market power, elasticity, and consumer surplus. A strong answer names the group with the more elastic demand, explains why that group gets the lower price, and notes that resale has to be limited for the strategy to work. In a written response, you can also compare it to one-price pricing or to second-degree price discrimination if the scenario uses bundles or menus instead of separate customer groups. ## third-degree price discrimination vs Second-Degree Price Discrimination Third-degree price discrimination charges different prices to different identifiable groups, like students versus adults. Second-degree price discrimination does not separate people by group first, it offers different versions or quantities and lets buyers choose. If the seller assigns the price based on who you are, that is third-degree. If the buyer picks a pricing tier, that is second-degree. ## Key Takeaways - Third-degree price discrimination is when a firm charges different groups different prices for the same good or service. - The firm needs market power and a way to separate customers into groups it can identify. - It works best when the groups have different price elasticity of demand. - The firm often uses this strategy to capture more consumer surplus and raise profit. - Resale can break the strategy, so firms try to stop customers from buying in the cheap market and selling in the expensive one. ## FAQs ### What is third-degree price discrimination in Honors Economics? It is a pricing strategy where the same product is sold at different prices to different customer groups. The price difference is based on something the seller can observe, like age, student status, or location. In Honors Economics, it usually comes up in market structure and pricing power. ### How is third-degree price discrimination different from second-degree? Third-degree price discrimination separates buyers into groups first, then assigns each group a price. Second-degree price discrimination gives buyers a menu of choices, and the buyer picks the option that fits. A student discount is third-degree, while buying a larger bundle for a lower per-unit price is more like second-degree. ### Why do firms use third-degree price discrimination? Firms use it to earn more profit by charging high-demand or less price-sensitive groups more while still keeping lower-price buyers. It lets the firm capture extra consumer surplus and sell to people who would not buy at one high price. The strategy only works well if the firm can keep the groups separate. ### What is an example of third-degree price discrimination? Student movie tickets, senior discounts, and different prices for the same app in different countries are common examples. The good or service is basically the same, but the seller uses a group label to set a different price. The example only counts if the seller is intentionally pricing by group, not just running a random sale. ## Related Study Guides - [4.4 Monopoly, Oligopoly, and Monopolistic Competition](/honors-economics/unit-4/monopoly-oligopoly-monopolistic-competition/study-guide/dszP8fNFV4AWGe77) ## About This Document Canonical Fiveable pages are available as Markdown at the same path plus `.md`. - [llms.txt](https://fiveable.me/llms.txt): index of Fiveable's sections and URL patterns - [llms-full.txt](https://fiveable.me/llms-full.txt): complete subject and unit listing - [MCP server](https://fiveable.me/mcp): call Fiveable as tools instead of fetching pages (`https://fiveable.me/api/mcp`) - [MCP server for AP teachers](https://fiveable.me/mcp/teachers): a teacher's classes, assignments and AP-rubric grading (`https://fiveable.me/api/mcp/teacher`) ## Structured Data ```json {"@context":"https://schema.org","@graph":[{"@type":"LearningResource","@id":"https://fiveable.me/honors-economics/key-terms/third-degree-price-discrimination#resource","name":"Third-Degree Price Discrimination | Honors Economics","url":"https://fiveable.me/honors-economics/key-terms/third-degree-price-discrimination","learningResourceType":"Concept explainer","educationalLevel":"AP® / High School","about":{"@id":"https://fiveable.me/honors-economics/key-terms/third-degree-price-discrimination#term"},"audience":{"@type":"EducationalAudience","educationalRole":"student"},"dateModified":"2026-07-03T02:21:58.069Z","isPartOf":{"@type":"Collection","name":"Honors Economics Key Terms","url":"https://fiveable.me/honors-economics/key-terms"},"author":{"@type":"Organization","@id":"https://fiveable.me/editorial#content-team","name":"Fiveable Content Team","url":"https://fiveable.me/editorial","parentOrganization":{"@id":"https://fiveable.me/#organization"},"member":[{"@type":"Person","name":"Amanda DoAmaral","sameAs":["https://www.linkedin.com/in/adoamaral"]},{"@type":"Person","name":"Becky Bahr","sameAs":["https://www.linkedin.com/in/becky-bahr-b52743132"]}]},"publisher":{"@type":"Organization","name":"Fiveable","url":"https://fiveable.me"}},{"@type":"DefinedTerm","@id":"https://fiveable.me/honors-economics/key-terms/third-degree-price-discrimination#term","name":"third-degree price discrimination","description":"Third-degree price discrimination is when an Honors Economics firm charges different groups different prices for the same product based on group demand or willingness to pay. 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