How does Costco make money if prices are so low?

Costco's profit model is counterintuitive: it earns almost nothing on merchandise sales (markups capped at 14-15%) and generates most of its operating profit from annual membership fees. In FY2025, membership fee income was approximately $5.3B while total revenue reached $275.2B. The model works because high inventory turnover, limited SKUs (roughly 3,700 vs. 30,000+ at a supermarket), and bulk purchasing create supplier leverage that keeps costs below competitors.

What is Kirkland Signature and why does it matter?

Kirkland Signature is Costco's private-label brand, covering hundreds of products from olive oil and batteries to clothing and vodka. It matters strategically because it gives Costco control over quality, pricing, and margins without depending on national brand negotiations. Members trust Kirkland products to match or exceed branded equivalents at lower prices, which reinforces the membership membership benefit and creates a product line that competitors cannot replicate.

How much revenue does Costco generate?

Costco reported $275.2B in total revenue for fiscal year 2025 (ending September 2025), up from $254.5B in FY2024. Net sales grew 8% to $269.9B. Net income was approximately $8.1B. The company operates 914 warehouses globally with 341,000 employees and maintains membership renewal rates above 90% in the U.S. And Canada.

Who are Costco's main competitors?

Costco competes across multiple retail formats simultaneously. Walmart and Sam's Club are the closest warehouse-club competitors, pressuring on everyday value and club trips. Amazon competes on delivery speed, broad assortment, and digital convenience. Target, Kroger, BJ's Wholesale Club, regional grocers, and specialty retailers compete for pieces of the same household budget. Costco's differentiation is the membership model, limited selection, and Kirkland Signature trust.

How does Costco handle inflation with such low markups?

Inflation is Costco's most delicate operational challenge because the 14-15% markup cap leaves less room to absorb supplier cost increases than traditional retailers with 25-50% margins. Costco manages this through aggressive supplier negotiation, package-size adjustments, Kirkland Signature reformulation, and selective category exits. The company will accept lower short-term margins rather than break price trust with members, betting that renewal rates matter more than quarterly earnings.

Why was Costco slow to adopt e-commerce?

Costco deliberately prioritized warehouse economics over digital expansion because the membership model depends on in-store traffic, impulse purchases, and the treasure-hunt experience. The company invested in e-commerce later than Amazon or Walmart because online fulfillment costs threatened the low-margin structure. Costco's approach has been to add digital convenience (same-day delivery via Instacart, Costco Logistics for bulky items) where it supports membership renewal rather than competing as a broad online marketplace.

What is Costco's growth strategy?

Costco's growth strategy is deliberately practical: open 25-30 new warehouses annually in markets where the economics work, deepen membership value through Executive tier upgrades, expand Kirkland Signature into new categories, grow international presence (especially in Asia and Europe), and add digital services where they support renewal rates. The company avoids acquisitions, aggressive promotional spending, and broad assortment expansion that would dilute the core model.

Who founded Costco and when?

James Sinegal and Jeffrey Brotman co-founded Costco in 1983 in Seattle, Washington. Sinegal learned the warehouse-club model working under Sol Price at FedMart and Price Club. Brotman brought legal, real estate, and capital formation expertise. The first warehouse opened on September 15, 1983. The company merged with Price Club in 1993 to form PriceCostco, later renamed Costco Wholesale Corporation in 1997.

Costco SWOT Analysis & Competitive Strategy (2026)

Costco Wholesale Corporation

Membership warehouse retailFounded 1983- Updated June 2026

Reviewed by Swet Parvadiya

Last reviewed: June 2026

Costco Wholesale Corporation Competitive Strategy & SWOT Analysis

Consider what it would take to replicate Costco. Seriously, think about what you'd need. You'd need millions of paying members before you opened a single store, because without the fee income you can't afford 14% markups. You'd need suppliers willing to give you rock-bottom pricing on day one, which they won't do without proof of volume. You'd need real estate — massive parcels with highway access and parking for 800 cars — in markets where those parcels are already taken. And you'd need employees who don't quit, because high turnover in a warehouse environment destroys productivity and customer experience. That's the real defense. Not any single advantage, but the fact that assembling all of them simultaneously is nearly impossible for a new entrant. BJ's Wholesale has been trying for decades and still operates fewer than 250 clubs. The membership psychology is underrated. Once you've paid $65 or $130, you feel compelled to shop there to "get your money's worth." That's not rational — the fee is sunk — but it's powerful. It concentrates household spending in ways that no loyalty program or points scheme can replicate. And because Executive members earn 2% back, the highest spenders are mathematically incentivized to route even more purchases through Costco. Volume concentration is the operational flywheel. Carrying 3,800 SKUs instead of 30,000 means each item sells in enormous quantities. That gives Costco pricing leverage that even Walmart struggles to match on a per-item basis. Suppliers accept thinner margins because the volume is guaranteed and the payment terms are reliable. Kirkland Signature is the piece most competitors can't answer. It's not just a store brand — it's a $60+ billion revenue line that members actively seek out. You can't comparison-shop it because it doesn't exist anywhere else. When a member trusts Kirkland olive oil, Kirkland batteries, and Kirkland toilet paper, they've built a habit that no coupon from a competitor can easily break. The employee piece matters more than Wall Street typically acknowledges. Costco pays above-market wages — starting around $18-19/hour with benefits — and gets turnover rates far below retail averages. Lower turnover means experienced staff, faster checkout, better stocking, and a warehouse that actually functions well on a busy Saturday. That operational quality reinforces the membership experience in ways that are invisible on a spreadsheet but obvious to anyone who's shopped at both Costco and a poorly-staffed competitor.

Market Position & Competitive Landscape

When a family decides between renewing their Costco membership or switching to Sam's Club, it comes down to one thing: do they trust the curation? Not the price — Sam's Club matches or beats Costco on plenty of individual items. Not the convenience — Sam's Club has scan-and-go, better app integration, and Walmart's logistics network behind it. The decision hinges on whether that family believes Costco already picked the best version of everything they need, so they don't have to think about it. That's a strange competitive advantage to have. It's not measurable in basis points or delivery speed. But it explains why Costco commands a $65 membership fee against Sam's Club's $50, why renewal rates sit above 93%, and why members talk about the store the way people talk about restaurants they love — with genuine enthusiasm rather than transactional loyalty. Sam's Club deserves more credit than it gets. Under Walmart's ownership, it has transformed from a neglected sibling into a genuine competitor. Member's Mark private label has improved dramatically. The technology investment — particularly scan-and-go and the revamped app — gives it a convenience edge Costco hasn't matched. Walmart's supply chain means Sam's Club can price aggressively in categories where scale matters. The gap has narrowed. But Sam's Club still operates roughly 600 locations to Costco's 914, and its cultural identity remains muddled by the Walmart association. Costco members feel like they belong to something. Sam's Club members feel like they're saving money. Amazon represents a different kind of threat — not format competition but behavioral substitution. Prime members already pay $139 annually for convenience, speed, and selection. If Amazon ever cracked bulk grocery and household consumables at warehouse-club price points, the overlap with Costco's core demographic would be enormous. So far, Amazon hasn't solved the fresh food problem at Costco's cost structure, and Whole Foods serves a different customer entirely. But the threat is real enough that Costco keeps investing in Costco Logistics and the Instacart partnership — defensive moves it might otherwise skip. BJ's Wholesale occupies the East Coast niche but hasn't scaled beyond 250 clubs in decades. Kroger and Walmart compete in grocery but can't replicate the membership economics. The gold bullion business — over $100 million per month — puts Costco in competition with precious metals dealers and banks, which is absurd and yet perfectly logical for a company whose brand promise is 'we'll give you a fair deal on literally anything.' The structural reality: Costco chose to compete on trust and curation rather than selection or speed. That means it beats Sam's Club and BJ's on brand loyalty but loses to Amazon on convenience and to Walmart on accessibility. Which dimension matters more depends entirely on whether the next generation of consumers values edited simplicity or infinite choice. So far, 93% renewal says simplicity is winning.