Costco (NASDAQ:COST) ended fiscal 2025 on a strong note, posting fourth-quarter net income of $2.61 billion, up 11% year-over-year, driven by $84.43 billion in net sales (+8%) and comparable sales growth of 5.7%. Membership also expanded significantly, with paid memberships increasing 6.3% to 81 million and executive memberships rising 9.3% to 38.7 million.
The company’s e-commerce sales exceeded $19.6 billion for the fiscal year, a 15% increase, while digitally enabled sales across platforms topped $27 billion. Warehouse expansion continues at pace, with 27 new locations opened in 2025 and plans for 35 more in 2026.
Beyond the financial results, Costco’s leadership placed strong emphasis on advancing the company’s digital and technology strategy. Key initiatives included enhancements to checkout systems, mobile application upgrades, infrastructure investments, and an expanded data platform to support targeted member engagement. “We continue to make progress with our technology roadmap for digital and e-commerce,” said CEO Ron Vachris, noting specific progress in search effectiveness, authentication, and site stability during periods of high demand.
These developments form part of a multi-year effort to modernize Costco’s operations and deepen digital engagement across its massive global membership base.
Why It Matters: Costco’s technology roadmap is increasingly central to how it delivers member value and sustains operational efficiency across its global footprint. The company is investing in systems that simplify fulfillment, improve personalization, and automate manual touchpoints, all critical for maintaining competitive advantage in an environment of rising consumer expectations and margin pressure. For CIOs and technology leaders, Costco offers a clear case study in measured, high-impact digital transformation: focusing on scalable automation, real-time data infrastructure, and customer-centric innovation. The company’s efforts show how even large-format retailers can integrate tech-led improvements without compromising on cost discipline or member experience.
- In-Warehouse Checkout Innovation Accelerates Throughput and Efficiency: Costco rolled out a new enhanced checkout system across all U.S. warehouses that dramatically reduces friction in the point-of-sale process. The new workflow enables employees to pre-scan smaller and medium-sized baskets while the member is still waiting in line. This means that once the member reaches the cashier, only payment is needed, no unloading or scanning at the register. According to CEO Ron Vachris, “This is speeding up the checkout process,” and has already contributed to productivity gains. The change reflects a broader trend across the retail sector where legacy manual processes are being streamlined through incremental, technology-assisted automation, enabling faster service and higher labor efficiency in high-volume environments.
- AI and Site Engineering Reduce Traffic Spikes and Enhance Product Discovery: Costco made targeted enhancements to its digital platforms aimed at addressing both user experience and infrastructure resilience. During the quarter, the company implemented data augmentation to improve product search, allowing members to find items more intuitively through natural queries. In tandem, it launched passwordless login functionality on its mobile app, aligning with modern security standards while improving access convenience. Most notably, Costco introduced a virtual waiting room for high-demand releases, to mitigate bot activity and reduce server strain during surge traffic. This feature helps ensure fairness for members while preserving site stability, a growing concern for retailers with flash-sale or limited-inventory events.
- Personalization and Retail Media Grow via Unified Member Data Platform: Costco advanced its data unification strategy to deliver targeted communications and lay the foundation for a retail media business. In Q4, the company began personalizing its homepage content based on membership tier and credit card status. Executive members now see benefits messaging, while Gold Star members are encouraged to upgrade. Non-members and non-cardholders see prompts to sign up or enroll in co-branded programs. This granular segmentation supports both marketing personalization and Costco’s entry into retail media, where targeted ad placements on digital channels are now being monetized.
- New Definition of E-Commerce Expands View of Digital Engagement: Starting in September 2025, Costco will reclassify its e-commerce reporting to include all digitally initiated sales, such as same-day delivery via Instacart and Uber Eats, Costco Travel bookings, Business Center Delivery, and other direct-to-member channels. This move reflects Costco’s intent to present a more complete picture of digital engagement, aligning its reporting with peer retailers. For fiscal 2025, these digitally enabled sales reached over $27 billion, highlighting the increasing integration of physical and digital operations. As CFO Gary Millerchip explained, “We believe this change aligns our reporting more closely with how our retail peers disclose this metric.” The shift underscores a broader omnichannel strategy that merges fulfillment flexibility with digital discovery.
- Digital Logistics and Data Infrastructure Power E-Commerce Scale: Costco’s rapidly growing digital sales, over $27 billion in digitally enabled revenue for fiscal 2025, are underpinned by a multi-year investment in logistics technology and data-driven fulfillment systems. The company highlighted that big and bulky item delivery rose 13% year-over-year, driven by enhancements to Costco Logistics, which includes delivery, installation, and haul-away services. Notably, Costco has recorded 15 consecutive quarters of improved member satisfaction scores related to these deliveries, signaling sustained operational optimization. These outcomes are supported by backend system upgrades that improve routing, coordination, and visibility across the logistics chain. For tech leaders, Costco’s approach demonstrates how investing in logistics IT can directly impact both customer experience and digital sales performance.
Go Deeper -> Costco 2025 Earnings – MarketBeat
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