How Costco Makes Money | Warehouse Model That Disrupted Retail

Costco was founded in Seattle in 1983 by retail veterans Jim Sinegal and Jeffrey Brotman. Price Club’s sales model targeted small business owners, selling items in bulk at a discounted price at no-frills outlets accessible only with an annual membership fee. Costco originally began with a wholesale business model aimed at enrolling businesses as members and later began enrolling individual consumers and selling products intended for them, including its own private-label brand.

How It Started

The Problem

Costco is able to offer lower prices and better values by eliminating virtually all the frills and costs historically associated with conventional wholesalers and retailers, including salespeople, fancy buildings, delivery, billing, and accounts receivable. The company identified that traditional retail consumed unnecessary overhead that inflated prices for consumers.

The Solution

Costco Wholesale Company began as a membership-driven warehouse club designed to sell a narrow selection of high-quality goods at very low margins, leveraging paid memberships for cash flow and rapid scaling. James Sinegal and Jeffrey Brotman launched Costco on September 15, 1983, blending retail operations expertise and legal-entrepreneurial acumen to expand the warehouse club model to mainstream consumers. Sinegal was a protégé of Sol Price and brought operational know-how from Price Club and FedMart. Brotman contributed legal experience and entrepreneurial vision to structure the membership model.

Target Audience

Initially, Costco targeted small business owners seeking bulk purchasing at discounted rates. Later, the company began enrolling individual consumers and selling products intended for them, including its own private-label brand. As of 2024, Costco Wholesale has 132 million cardholders among 73.4 million household members. Memberships for personal or business use cost $60 as of 2024.

Competitive Advantage

• Low-Cost Operational Model: Costco eliminates virtually all frills and costs historically associated with conventional wholesalers and retailers. The company runs a tight operation with extremely low overhead, which enables it to pass dramatic savings to its members.
• Kirkland Signature Private Label: By 2024, Kirkland Signature represented approximately 27% of total company sales, enhancing margins and member retention. Kirkland Signature was created to match or exceed national brands in quality while undercutting prices, becoming a core element of Costco’s business model evolution.
• Membership Revenue Model: Following the 2024 fee hike to $65, membership revenue continues to support low pricing and high inventory turns.
• High Revenue Per Square Foot: Their revenue per square foot of their warehouses belongs more in a conversation with Tiffany than Walmart.
• Consistent Growth: Costco has grown revenue by approximately 10% for over 30 years in a row.

Marketing Technique

Membership-Based Loyalty Program

Costco’s primary marketing strategy revolves around its membership model. Members pay annual fees and gain access to exclusive pricing and products. A $120 membership adds a 2% annual reward certificate (up to $1,000 per year) and discounts on Costco services. This creates sustained customer loyalty and predictable revenue streams.

Word-of-Mouth and Community Engagement

Costco relies heavily on word-of-mouth marketing and member recommendations rather than traditional advertising. The company’s limited product selection and exceptional values create natural advocates among satisfied members. Since 95% of the company’s workforce is in its warehouses, and so many of its executives started their careers there, the company’s culture is tightly focused on supporting the warehouse experience.

Strategic Partner Benefits

Most Costco Wholesale warehouses have a discounted gas station on site for members. Costco Wholesale also provides other discounted benefits to its members, including travel – discounted rates on hotels, cruises, rental cars, and other travel products. The food court offers discounted fast food, such as the $1.50 hot dog, which brings in customers even if Costco takes a loss on each hot dog sold.

Digital and E-Commerce

Costco invested in e-commerce and logistics, blending low-price bulk retail with improved online fulfillment. Costco Next enables members to purchase directly from suppliers at Costco-negotiated prices, expanding the company’s omnichannel reach and supplier integration.

How Costco Makes Money

Costco operates a dual revenue model combining merchandise sales and membership fees. Membership revenue continues to support low pricing and high inventory turns. The company maintains razor-thin margins on products but compensates through high-volume sales and membership cash flow. Costco is scaling through operational efficiency and membership loyalty, reaching approximately $660 billion in annual sales trajectory by 2025.

Kirkland Signature represented approximately 27% of total company sales by 2024, enhancing margins and member retention. Additional revenue streams include gas stations, food courts, pharmacy services, and travel discounts. The membership fee covers overhead and provides substantial profit margins, allowing the company to offer razor-thin margins on physical goods.

Market Share

Retailer	Position in Retail Industry	Key Details
Costco	Third Largest Retailer	924 warehouses worldwide, with 85% located in North America (United States, Canada, and Mexico) as of March 2026
Largest Membership Warehouse	Warehouse Club Leader	The largest membership warehouse chain in the United States
Membership Base	Strong Customer Base	132 million cardholders among 73.4 million household members as of 2024
Kirkland Signature	Global Private Label Brand	Kirkland Signature generates more revenue on its own, excluding everything else in the store, than all of Nike

Business Model Canvas of Costco

Component	Description
Key Partners	Suppliers, manufacturers, financial institutions (Visa/Citi), logistics providers, and ecosystem service providers
Key Activities	Warehouse operations, inventory management, membership management, supply chain optimization, private label development, and e-commerce fulfillment
Value Propositions	Low prices through bulk purchasing, high-quality private label products, membership exclusivity, convenience, and value-added services
Customer Segments	Businesses (bulk purchasing), individual households (personal consumption), and premium members (Executive Members)
Customer Relationships	Membership engagement, loyalty rewards, personalized marketing, and consistent warehouse experience
Revenue Streams	Membership fees, merchandise sales (27% from Kirkland Signature), gas station profits, pharmacy services, food court, and travel discounts
Key Resources	Warehouse facilities, brand reputation, supply chain network, employee expertise, technology infrastructure, and membership database
Cost Structure	Warehouse operations, inventory acquisition, logistics, staffing, technology systems, and product sourcing
Channels	Physical warehouses, Costco.com e-commerce, Costco Next platform, membership marketing, and word-of-mouth referrals

Conclusion: Is It a Viable Business?

Costco represents one of the most viable and sustainable business models in modern retail. The company has grown revenue by approximately 10% for over 30 years in a row, demonstrating consistent execution and market resilience. The membership-based warehouse model eliminates traditional retail overhead while creating predictable revenue streams and fostering deep customer loyalty.

The company’s dual revenue strategy – combining thin merchandise margins with substantial membership fees – has proven exceptionally effective. Kirkland Signature represented approximately 27% of total company sales by 2024, enhancing margins and member retention. This private label success demonstrates Costco’s ability to evolve beyond a simple discount retailer into a lifestyle brand that customers willingly pay to access.

With 924 warehouses worldwide, with 85% located in North America as of March 2026, Costco maintains a strong geographic presence while retaining international expansion opportunities. The company’s focus on operational efficiency, employee satisfaction, and member value creation has established competitive advantages that are difficult for rivals to replicate. Analysts forecast continued aggressive expansion in China and Southeast Asia, driven by rising middle-class demand aligned with Costco’s membership value. With proven resilience during economic challenges and consistent member growth, Costco demonstrates exceptional viability as a long-term business enterprise.

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