Walmart Commerce in 2026: Marketplace Hits 400M SKUs and Stores Power 80% of Online Orders

Walmart’s digital commerce business has entered a new phase of accelerated growth and operational maturity. In August 2026, the company released Q2 FY27 earnings showing global ecommerce net sales up 23% year over year, while marketplace net sales surged more than 50%. The marketplace itself has quietly crossed 400 million active SKUs, narrowing the catalog gap with Amazon, and Walmart’s physical stores now function as fulfillment nodes for 80% of all online orders. At the same time, Walmart Fulfillment Services (WFS) is introducing new fee structures that will raise costs for some sellers by 9–14% starting September 15, forcing merchants to recalculate their fulfillment math.

Walmart Marketplace Surpasses 400 Million SKUs as Seller Growth Accelerates

Walmart Marketplace has reached over 400 million active SKUs, driven by a 34% year-over-year increase in active sellers. The company announced new tools such as native A/B testing for product listings and expanded access to shopper data through Walmart Luminate. These moves are part of an aggressive push to attract direct-to-consumer brands and experienced Amazon sellers, signaling that Walmart is serious about competing in the third-party marketplace space. According to Ecommerce Times, the marketplace is “quietly” narrowing the catalog gap with Amazon, and the 400 million SKU milestone underscores the platform’s growing breadth.

Key Marketplace Metrics

Metric	Value	Source
Active SKUs	400+ million	Ecommerce Times
Year-over-year seller growth	34%	Ecommerce Times
New seller tools	Native A/B testing, Walmart Luminate Insights	Ecommerce Times
Marketplace net sales growth (Q2 FY27)	>50%	Walmart Corporate

The seller growth and catalog expansion are not accidental. Walmart has been investing in automation, data sharing, and international marketplace expansion. In its Q2 FY27 earnings release, Walmart Corporate noted that the marketplace is now being expanded internationally, leveraging the same platform capabilities that drove domestic growth.

New Walmart Fulfillment Services Fees Reshape Seller Economics

Starting September 15, 2026, Walmart Fulfillment Services (WFS) is implementing several fee changes that will alter the cost structure for sellers. The changes include expanded dimensional weight pricing, storage rate tiering for slow-moving inventory, and increased returns processing fees. According to Ecommerce Times, these adjustments lead to a 9–14% cost increase for some items, forcing sellers to reevaluate whether WFS remains the most profitable option for their products.

Breakdown of WFS Fee Changes

Fee Type	Change	Effective Date
Dimensional weight pricing	Expanded to more product categories	September 15, 2026
Storage rate tiering	Higher rates for slow-moving inventory	September 15, 2026
Returns processing fees	Increased fees per returned unit	September 15, 2026

The fee restructuring is a significant event for the Walmart seller community. Many merchants who built their operations around WFS for its speed and Prime-like badge now face hard decisions. Some may shift inventory to third-party fulfillment or mix WFS with self-fulfillment to optimize costs. The changes also create an opportunity for alternative fulfillment providers that can offer more competitive rates for low-turnover items.

Q2 FY27 Earnings: Ecommerce Growth 23%, Marketplace Up 50%

Walmart’s Q2 FY27 results, released August 20, 2026, paint a clear picture of a retailer that has successfully integrated digital and physical commerce. Global ecommerce net sales grew 23% year over year, while marketplace net sales grew over 50%. The company also reported that its physical stores now fulfill 80% of online orders, with 100% of fast delivery orders coming from stores. The earnings release, published on Walmart Corporate, highlighted these figures as evidence that the company’s omnichannel strategy is working.

Beyond the numbers, Walmart’s CFO noted that the company plans to invest the savings from a significant tariff refund into price cuts, positioning the retailer aggressively for Q4. The combination of store-fulfilled ecommerce, automation, and pricing power gives Walmart a unique advantage heading into the holiday season.

Stores as Fulfillment Nodes: 80% of Online Orders and Q4 Pricing Implications

Perhaps the most transformative operational change at Walmart is the role of its physical stores. The company’s CFO stated that stores now fulfill 80% of ecommerce orders, and all fast deliveries (e.g., two-hour or same-day) are handled entirely by stores. This achievement is supported by substantial investments in automation, including automated pickup towers, robotics in backrooms, and advanced inventory management systems. As reported by EcomCrew, this store-fulfillment model lowers shipping costs, reduces delivery times, and improves inventory turnover.

For Q4, the implications are significant. Walmart can offer competitive pricing because store-fulfillment reduces last-mile expenses. Combined with the tariff refund being used to fund price cuts, Walmart is well-positioned to win holiday shoppers. This model also contrasts with Amazon’s heavy reliance on centralized fulfillment centers, although Amazon is also expanding its same-day delivery network.

Store Fulfillment vs. Centralized Fulfillment

Aspect	Walmart (Store-fulfilled)	Amazon (Central FC)
% of online orders fulfilled by physical stores	80%	<10% (est.)
Fast delivery coverage	Near universal (stores everywhere)	Major metro areas
Last-mile cost	Lower (short distances)	Higher (longer routes)
Inventory flexibility	Leverages store stock	Dedicated FC inventory

Walmart’s store-fulfillment model is not new, but reaching 80% penetration is a milestone that signals operational excellence. It also provides a buffer against rising fuel and labor costs, as store employees already pick and pack orders alongside their regular duties.

Competitive Positioning Against Amazon

Walmart’s 400 million SKUs are still less than Amazon’s estimated 600+ million (including third-party), but the gap is narrowing. Walmart’s seller growth rate of 34% year over year outpaces Amazon’s reported seller growth in recent years. Additionally, Walmart’s new A/B testing tool and Luminate Insights give sellers richer data, something Amazon sellers have long demanded. However, the new WFS fees may give some sellers pause, especially those who sell bulky or slow-moving items that now face higher dimensional weight charges.

Amazon, for its part, continues to raise fees and tighten inventory requirements. Some sellers may see Walmart as a more attractive alternative, especially if Walmart can maintain its store-fulfillment cost advantage. The 50% marketplace net sales growth in Q2 FY27 suggests that the platform is resonating with both sellers and shoppers.

What This Means for Sellers in Late 2026

For anyone selling on Walmart or considering it, the landscape in late 2026 requires careful planning. The marketplace offers access to a rapidly growing customer base, but the new WFS fees demand a fresh analysis of fulfillment economics. Sellers should:

• Calculate dimensional weight impact for their product dimensions.
• Monitor inventory turnover to avoid storage tiering penalties.
• Consider hybrid fulfillment (WFS for fast movers, self-fulfill for slow movers).
• Take advantage of Walmart Luminate data to optimize listings.
• Prepare for Q4 pricing competition as Walmart invests tariff refund savings into price cuts.

Walmart’s commerce platform is no longer a secondary channel; it is a primary growth engine for many brands. As the company continues to integrate its stores, marketplace, and fulfillment, sellers who adapt to the new fee structure and leverage the platform’s data tools will be best positioned to profit.

Frequently Asked Questions

Q: How many SKUs does Walmart Marketplace have in 2026?

A: Walmart Marketplace has surpassed 400 million active SKUs, driven by a 34% increase in active sellers year over year.

Q: What are the new Walmart Fulfillment Services fee changes and when do they take effect?

A: WFS is introducing dimensional weight pricing, storage tiering, and increased returns fees effective September 15, 2026. Some sellers will see cost increases of 9–14%.

Q: How much did Walmart’s ecommerce sales grow in Q2 FY27?

A: Global ecommerce net sales grew 23% year over year, while marketplace net sales grew over 50%.

Q: What percentage of Walmart’s online orders are fulfilled by stores?

A: Physical stores now fulfill 80% of Walmart’s online orders, and all fast delivery orders are handled by stores.

Q: How does Walmart’s store-fulfillment model compare to Amazon’s?

A: Walmart leverages its 4,700+ U.S. stores as local fulfillment nodes, reducing last-mile costs and enabling fast delivery. Amazon relies more on centralized fulfillment centers, though it is expanding same-day delivery.

Q: What new seller tools did Walmart announce in August 2026?

A: Walmart launched native A/B testing for product listings and expanded access to shopper data through Walmart Luminate Insights.