A company can calculate what a product costs to make, determine the margin it would like to earn, and set a price accordingly. The market may have other ideas.

Customers often have alternatives. When a rival enters the market, lowers its prices, improves its offer, or simply makes comparison shopping easier, the price that once seemed sustainable may become harder to defend. Companies then have to decide whether to cut prices, offer promotions, absorb more of their costs, change their product mix, or give customers another reason to pay more.

That pressure sits at the heart of competition. The U.S. Federal Trade Commission describes competition as a force that can produce lower prices, greater choice, higher quality, and innovation. The European Commission similarly says effective competition puts businesses under pressure to offer more attractive prices and products because customers can choose another supplier.

For businesses, however, the consequence is more complicated than simply charging less. Stronger competition can force management to reconsider how price, cost, product differentiation, and profitability fit together.

A price is meaningful partly because of what customers can buy instead.

A company selling a highly differentiated product with few close substitutes may have more freedom to raise prices without losing large numbers of customers. A company selling something that customers view as interchangeable with several competing products usually has less room.

Economists often examine this relationship through markups, which measure the difference between prices and the marginal cost of supplying an additional unit. The OECD defines a markup as the ratio between price and marginal cost and uses estimated markups as one indicator of market power. Higher market power can give firms greater ability to price above marginal cost. The estimates require assumptions about firms' production and costs, so they should not be treated as direct observations of companies' profit margins.

Competition changes that calculation by improving customers' alternatives. A new entrant can offer a lower price. An existing rival can discount aggressively. Online sellers can make products that were previously difficult to compare visible on the same screen.

The result is pressure on the difference between what a company would prefer to charge and what customers are willing to accept when alternatives are readily available.

The effect can be seen particularly clearly when researchers observe what happens after competitors enter a market.

A 2025 National Bureau of Economic Research working paper, revised in April 2026, examined high-frequency pricing data and the locations of gasoline stations throughout California. Using an event-study approach, researchers Reid B. Taylor and Erich Muehlegger estimated that the arrival of a new station was associated with an immediate and persistent 2.7-cent decline in prices at incumbent stations, equivalent to a 7 percent reduction in estimated retail markups.

The findings are estimates from one market and should not be generalized mechanically to other industries. Gasoline prices are highly visible, products are relatively comparable, and customers can often choose among nearby stations. Still, the study offers a useful example of the mechanism. When another seller appeared, incumbent businesses changed their pricing.

Earlier experimental research reached a similar conclusion under very different conditions.

A study published in the American Economic Journal Applied Economics randomly introduced 61 additional firms into 72 markets serving beneficiaries of a cash-transfer program in the Dominican Republic. Six months after entry, researchers estimated price reductions of 2 percent to 6 percent, with larger declines in markets receiving more entrants. The study also reported an improvement in self-reported service quality. Because entry was randomized, the research was designed to identify the causal effect of increased competition rather than merely document a correlation between competition and prices.

The size of the effect will differ from market to market. But both studies illustrate why a company's pricing strategy cannot be separated from the number and strength of alternatives available to its customers.

A competitive response does not necessarily mean cutting every listed price.

Retail filings show how companies can combine pricing with promotions, assortment, private-label products, convenience, and service.

Target, for example, says it competes through a combination of price, merchandise assortment, store experience, digital services, convenience, loyalty programs, advertising, and other factors. Its 2025 annual report also warns that digital tools allow consumers to comparison shop quickly, potentially making price or convenience more important in purchasing decisions.

That means a company confronting stronger competition has several possible responses. It can lower the regular price. It can run more promotions. It can introduce lower-priced products. It can improve the product or service enough to justify the existing price. It can strengthen loyalty benefits or make purchasing more convenient.

Target provides a concrete example of direct price action. During 2024, the retailer reported lowering prices on more than 10,000 items, describing the action as part of its effort to improve affordability for value-conscious consumers. The figure measures the number of items on which Target said it reduced prices during the year. It does not mean all reductions were caused solely by competition, since consumer demand, costs, inventory conditions, and broader pricing strategy can also influence such decisions.

Competition therefore affects pricing decisions without necessarily producing one uniform response.

The difficult part is that price competition can help attract customers while putting pressure on the amount earned from each sale.

Costco describes that trade-off unusually clearly in its 2025 annual filing. The company says competitive conditions affect both its net sales and gross margins and that it has historically responded through changes to pricing, merchandise mix, private-label penetration, and online offerings.

Costco also says its pricing investments can include reducing merchandise prices to drive sales or meet competition, as well as holding prices steady when costs rise instead of passing the full increase on to members. The company notes that these actions can reduce gross margin in the near term.

That is one of the central financial tensions created by competition.

Suppose a retailer pays $80 for a product and sells it for $100. If competitive pressure pushes the selling price to $95 while the cost remains unchanged, the dollars of gross profit generated by each unit decline. The business must then compensate in some combination of higher sales volume, lower procurement costs, greater operating efficiency, or a more profitable mix of other products and services.

This is why companies facing price competition often focus on costs at the same time.

Walmart's pricing model illustrates the connection. In its fiscal 2026 annual filing, the retailer describes price leadership and its everyday-low-price philosophy as central to its strategy. Walmart pairs that approach with what it calls everyday low cost, an effort to control expenses so savings can be passed to customers.

Importantly, competing aggressively on price does not automatically mean margins must fall. Walmart reported that its consolidated gross profit rate increased slightly in fiscal 2026, with disciplined inventory management and growth in higher-margin businesses among the factors contributing to the improvement. That result shows why pricing cannot be evaluated independently of costs, product mix, inventory management, and other sources of revenue.

Competition also changes when customers become better informed.

Historically, comparing prices could require visiting several stores, calling suppliers, requesting quotations, or relying on advertising. Digital commerce has reduced many of those frictions.

Target explicitly identifies this development as a competitive risk, noting that consumers can use digital tools to comparison shop quickly.

Greater transparency matters because customers do not need a new competitor to physically open nearby for competitive pressure to increase. An existing rival can become more relevant if its prices become easier to find, its products become available online, or delivery makes geographical distance less important.

For businesses, that can make large unexplained price differences harder to sustain when customers perceive competing products as similar.

It can also make pricing more responsive. Companies can watch competitors, test promotions, adjust digital offers, and change prices across large assortments more quickly than was possible in many traditional retail settings.

The OECD has identified algorithmic pricing as a growing issue for competition authorities, particularly as artificial intelligence and automated systems become more involved in pricing decisions. Its 2025 report on algorithmic pricing in G7 jurisdictions examines how these technologies are changing the competitive environment and creating new questions for regulators.

Technology can therefore make price competition faster and more sophisticated, even though the underlying commercial question remains familiar. What will customers pay when they can see what everyone else is offering?

Cutting prices is not always the most attractive answer.

If a company can make its product sufficiently different from competing alternatives, customers may be willing to pay more. That differentiation can come from quality, design, convenience, service, brand reputation, selection, delivery, loyalty benefits, or other characteristics customers value.

Target's filings reflect this approach. The retailer says its competitive position depends substantially on its ability to differentiate itself while providing compelling value. Costco likewise says it responds to changing competition partly through adjustments to merchandise mix and greater use of private-label products.

These strategies matter because competition is not confined to the number printed on a price tag.

The European Commission describes competitive markets as places where companies compete on price, quality, choice, and innovation. A business that cannot profitably match the lowest-priced competitor may therefore try to make a direct price comparison less important by offering something customers regard as better or meaningfully different.

That does not eliminate pricing pressure. It changes the basis on which customers judge whether the price is worthwhile.

Companies rarely have complete freedom to choose their prices. Costs create a lower boundary for sustainable economics, demand influences what customers will pay, and competition determines what alternatives those customers have.

When competition becomes stronger, businesses may discover that a previously acceptable price no longer attracts enough customers. They can respond by reducing prices, increasing promotions, absorbing more costs, finding efficiencies, adjusting their product mix, or differentiating their offer.

The evidence does not support a rule that every increase in competition produces an identical price reduction. Markets differ, products differ, and companies respond in different ways. But both economic research and corporate disclosures show the underlying pressure clearly.

As customers gain credible alternatives, companies have less room to think about price in isolation. Pricing becomes a decision about how much value the business can offer, how much margin it can preserve, and how effectively it can compete for the customer's next purchase.