Walmart Marketplace integration: what syncs and what stays in Seller Center
Connect your Walmart Marketplace account and new orders come to our Austin warehouse to be picked, packed and shipped, with tracking synced back to each order. Listings, pricing and shipping settings stay in Seller Center. Pricing starts at $7/order with a $750 monthly minimum.
What the integration carries, and what stays in Seller Center
Walmart Marketplace is one of Simpl's supported marketplace integrations. New Walmart orders come through it to our Austin warehouse, and when an order ships, its UPS, USPS or FedEx tracking number syncs back to the Walmart order. You also see what stock is on hand at Simpl in real time. The rest of your Walmart account stays yours in Seller Center: listings and pricing, the shipping settings Walmart asks every seller-fulfilled account to keep, and requests for programs like TwoDay.
How the Walmart Marketplace integration works
Walmart Marketplace is connected to Simpl
Walmart's Connect button is how a seller authorizes an approved solution provider that offers it: in Seller Center, go to Apps, then App Listings, then Connect and Authorize. Not every approved provider can be connected that way yet. Walmart stopped issuing new delegated API keys on July 30, 2026, and keys that already exist keep working until April 30, 2027. Onboarding with Simpl takes 5–7 days with no onboarding fee, and questions about the connection go to your dedicated account manager, a real person reachable by email.
Send your inventory to Austin
Ship your stock to our Austin warehouse. Receiving takes 1–3 days, and from then on you can see what's on hand in real time, so you know when a product is running low. On Walmart's side, a seller-fulfilled account needs a fulfillment center set up in Seller Center under Seller Fulfillment, with a ship-from location and a shipping template. That is where Walmart gets your fulfillment lag time and the shipping methods buyers see.
We pick, pack and ship your Walmart orders
Walmart orders come to Simpl through the integration. Orders received before 12pm CT ship the same day. Our order accuracy is 99.99%, and if we ship the wrong item, we pay the return shipping and send the right one.
Tracking goes back to the Walmart order
Every shipment gets a UPS, USPS or FedEx tracking number, and it syncs back automatically. Walmart's valid tracking rate counts that, so it matters for your account standing. Simpl doesn't email your buyers; any shipping notice they get comes from Walmart.
What syncs between Walmart Marketplace and Simpl
Here's what moves between your Walmart Marketplace store and Simpl's warehouse automatically, with the direction and mechanism for each.
| Direction | What syncs | Mechanism | Notes |
|---|---|---|---|
| in | Orders | Simpl's Walmart Marketplace integration | New Walmart orders come to Simpl to be picked, packed and shipped. |
| out | Tracking | Tracking number syncs back to the Walmart order | Every shipment gets a UPS, USPS or FedEx tracking number that updates in real time. |
| out | Inventory visibility | Real-time stock view at Simpl | See what's on hand at our Austin warehouse as it changes, so you can restock before a product runs out. |
| in | Returns | Branded returns portal | Returns come back to our Austin warehouse through a branded returns portal, included for every client. |
What Walmart grades you on, in plain words
Walmart scores every Marketplace seller against published performance standards, measured over the last 30 or 60 days (Walmart Marketplace Learn, Seller Performance Standards: Overview). Fall short and Walmart can suppress your listings or suspend your account, whether you run a big operation or a one-person shop. Most of what a warehouse affects comes down to shipping on time, uploading valid tracking and not cancelling orders.
The share of orders that reach the buyer by the delivery date Walmart promised. Walmart also caps late shipments at 5%. Simpl's part is getting orders out the door fast: orders received before 12pm CT ship the same day. Transit time after that is up to the carrier.
The share of orders with a working carrier tracking number. Every Simpl shipment gets one, and it syncs back to the Walmart order. Walmart's TwoDay program uses a lower 95% tracking bar, but the 99% account standard still applies.
The share of orders you cancel, often because something sold that wasn't in stock. Simpl gives you real-time inventory visibility, so you can see a product running low at our warehouse and restock before it runs out.
Returns caused by wrong, damaged or defective items, and packages that never arrive. The warehouse's part is shipping the right item: Simpl's order accuracy is 99.99%, and when we ship the wrong item, we cover the return shipping and the re-fulfillment. Defective products and packages lost in transit are mostly outside a warehouse's control.
What stays with you in Seller Center
Listings, pricing and product content.
Your listings, prices and product content stay in your hands in Seller Center, where Walmart grades content quality and price competitiveness on its own metrics. Simpl's part is the shipping side: orders in, tracking back.
Fulfillment center, lag time and shipping methods.
Walmart asks every seller-fulfilled account to set up a fulfillment center under Seller Fulfillment, with a ship-from location and a shipping template that assigns SKUs to shipping methods: Value, Standard, TwoDay, OneDay or Freight. Those settings, plus your fulfillment lag time, decide the delivery dates Walmart promises buyers, so set them around a warehouse that ships orders received before 12pm CT the same day.
Requests for TwoDay or OneDay.
Seller-fulfilled TwoDay and OneDay are programs you request in Seller Center once your metrics qualify. Walmart lists the requirements on its Expedited Delivery page, and the TwoDay question in the FAQ has the numbers. Simpl's part is the shipping side: same-day shipping for orders in before 12pm CT and a tracking number on every shipment.
A real person to email about the connection.
Every Simpl client gets a dedicated account manager, a real person reachable by email, with same-day (often faster) responses. Questions during setup and after, including about the Walmart connection, go to them.
What Walmart fulfillment costs with Simpl
Pricing starts at $7/order. The per-order rate covers picking, packing, packaging and postage, with no carrier markup or hidden fees. Heavier orders cost more than light ones. Storage is billed by type: small bin, large bin, shelf or pallet. There's a $750 monthly minimum, billed pay-the-difference: if a month's orders bill under $750, you pay the difference so that month's total comes to $750. That's about 100 shipments at the lightest weight (0.5 lb or under). There's no onboarding fee.
Walmart Marketplace fulfillment FAQ
What does Simpl cost for Walmart orders, and is there a minimum?
What do I still handle myself?
Does Walmart treat orders Simpl ships as seller-fulfilled?
Does Simpl email my Walmart buyers?
How fast can I start?
Should I use WFS or a 3PL like Simpl?
Can my listings get the TwoDay tag without WFS?
What does Walmart grade sellers on?
How are returns handled?
What carriers does Simpl use?
Can Simpl ship orders from my other sales channels too?
Related integrations
Walmart Marketplace fulfillment, in depth
Questions about the Walmart connection?
Tell us what you sell and how many Walmart orders you ship, and we'll send a quote. Still deciding between WFS, a 3PL and packing orders yourself? Start with how Simpl works as a 3PL for Walmart sellers.