Walmart Marketplace Seller Guide 2026: Newon Lab's End-to-End Onboarding & Growth

For years, "selling online" in the US mostly meant selling on Amazon. That's changing. Walmart Marketplace has become a serious second channel, with a huge base of shoppers, a fast-growing third-party seller program and often less competition per product category than Amazon.

If you already sell on Amazon or Shopify, Walmart can be one of the quickest ways to add revenue without inventing a new product. This guide covers how to get approved, set up listings that rank, handle fulfillment and grow with advertising, and how Newon Lab's ecommerce team manages the whole process.

Why sell on Walmart Marketplace in 2026?

• Massive reach: Walmart.com attracts a very large share of US online shoppers, many of whom compare prices across sites.
• Less crowded categories: many niches have fewer third-party sellers than on Amazon.
• No monthly subscription fee: Walmart charges referral fees per sale instead of a monthly plan.
• Omnichannel shoppers: customers who shop in stores also browse online, which helps trusted brands.

Step 1: Get approved as a seller

Walmart is more selective than some marketplaces. A strong application usually includes:

• A US business entity and EIN (or eligible international business details)
• A track record of marketplace or ecommerce sales
• Products that fit Walmart's catalog and policies
• Clear fulfillment capability, ideally with fast, reliable shipping
• GS1 UPCs for your products

We help clients prepare applications so they're approved faster and avoid back-and-forth with Walmart's onboarding team.

Step 2: Set up Seller Center and your catalog

Once approved, you'll configure Seller Center: tax information, payment details, shipping templates, return policies and your product catalog. Products can be added one at a time, in bulk spreadsheets, through an API, or with an integration partner that syncs from Shopify, BigCommerce or your ERP.

Step 3: Write listings that rank

Walmart's search algorithm rewards complete, accurate and competitive listings. Focus on:

• Titles: brand, product type, key attribute, size or count, in a clean readable order
• Key features: 3–10 short bullets focused on benefits
• Descriptions: detailed, keyword-aware and easy to scan
• Images: high-resolution, white-background main image plus lifestyle shots
• Attributes: fill in every relevant attribute. Missing attributes hurt your listing quality score
• Rich media: videos, comparison charts and enhanced content where available

Step 4: Price competitively

Walmart shoppers are value-focused, and the Buy Box often goes to the best combination of price, shipping speed and seller performance. Automated repricing tools can protect your margin while staying competitive. Always factor in referral fees, fulfillment costs and returns.

Step 5: Use Walmart Fulfillment Services (WFS)

WFS is Walmart's equivalent of FBA. You send inventory to Walmart's fulfillment centers, and they handle storage, picking, packing, shipping, customer service and returns. Benefits include:

• Eligibility for fast-shipping badges like 2-day delivery
• Better chances of winning the Buy Box
• Less operational work for your team

If you already use a 3PL, we help you compare WFS against your current setup on cost and delivery speed.

Step 6: Advertise with Walmart Connect

Walmart Connect offers Sponsored Products, Sponsored Brands and display advertising. Like Amazon PPC, success depends on campaign structure, keyword harvesting, negative keywords and constant bid optimization. Because the ad platform is less saturated, many sellers see attractive costs per click compared with Amazon.

Step 7: Drive external traffic

Shoppers often discover products on social media first. A product that trends in TikTok videos can see demand spike across every marketplace where it's sold. Newon Lab runs TikTok, Instagram and Google campaigns that send shoppers to your Walmart listings, your Amazon store or your own website, whichever gives you the best margin.

Step 8: Protect your seller performance

Walmart closely monitors on-time shipping, cancellation rates, valid tracking and customer reviews. Falling below standards can limit your visibility or suspend your account. Our dashboards track these metrics daily and alert you before small problems become big ones.

Walmart vs Amazon: should you choose?

You don't have to. Many of our clients run Amazon, Walmart, TikTok Shop and a Shopify store at the same time, with inventory and orders synced in one system. Walmart often becomes a profitable second channel within a few months.

How Newon Lab helps Walmart sellers

• Seller application and onboarding support
• Catalog setup, integrations and listing optimization
• WFS setup and inventory planning
• Walmart Connect advertising management
• External traffic from TikTok, Meta and Google
• Multichannel inventory, ERP and reporting integrations

Compare service packages on our pricing page.

FAQ

How long does Walmart approval take?

Approval timelines vary. Many complete applications are reviewed within a few weeks.

Does Walmart charge monthly fees?

Walmart Marketplace generally charges referral fees per sale rather than a monthly subscription. WFS and advertising have separate costs.

Can I use my Amazon listings on Walmart?

You can reuse product data, but you should optimize titles, attributes and images for Walmart's requirements and search.

Start selling on Walmart with experts

Walmart Marketplace can become a major revenue channel when it's set up and managed properly. Explore our ecommerce services, review pricing, or request a free marketplace audit.

Walmart is a trademark of Walmart Inc. Newon Lab is an independent agency.