A Walmart Marketplace seller's margin is decided by three charges the platform sets and one cost it never sees: the referral fee by category, the Walmart Fulfillment Services fee by shipping weight, storage by cubic foot and season, and your landed cost per unit. An AI can answer questions about Walmart profit once those four sit on the same SKU line, reconciled to the payment statement. It cannot answer them from the Seller Center alone, because the Seller Center has the first three and not the fourth. The fee mechanics, the differences between Walmart's reports and Amazon's, and the question-and-answer on one product follow.
Walmart's pricing page on marketplace.walmart.com states that Marketplace and WFS carry no setup, monthly, or hidden fees, and that referral fees vary by category and are deducted only when a sale completes. The rate for Home, Kitchen, Decor and Garden is listed at 15 percent, and the total sales price the fee applies to includes shipping and handling.
The same page describes WFS fulfillment fees for standard items as a schedule by shipping weight. Shipping weight is the greater of unit weight and dimensional weight (length times width times height in inches, divided by 139) once the unit is at least a pound, plus a quarter pound for packaging, rounded up to the next pound. Surcharges apply for apparel, hazardous materials, items priced under ten dollars, and oversize dimensions. Storage is charged per cubic foot per month, with a higher rate from October through December on units stored more than 30 days and a higher rate again on units stored more than twelve months.
Every one of those rules is a place where a SKU's margin can move without a price change: a packaging tweak that crosses a pound boundary, a price cut that crosses the ten-dollar line, a Q4 that starts with units already 25 days on the shelf.
Walmart's Marketplace Learn site describes a Payments dashboard with a summary per settlement cycle, statements by period or by year, and a downloadable Payments Report, also called the Reconciliation Report, with order-line detail: the SKU, the transaction type (sale or refund), gross sales revenue, refunded retail sales, gross shipping revenue, the commission rate, and commission split between product and shipping. The same page notes that Walmart uses "referral fee" in the retailer agreement and "commission" in the report for the same charge, that balances appear roughly 24 to 48 hours after an order is marked shipped, and that payment frequency is set by the seller's agreement with Walmart.
Amazon's settlement report is a transaction ledger: dozens of fee and adjustment types as separate rows, tied to orders, inside a two-week window. Walmart's report is organized around the order line, with the commission computed on it. That makes Walmart's report easier to read per order and harder to use for cost analysis, because fulfillment and storage charges from WFS are documented separately from the marketplace commission lines, and landed cost is in neither. The reconciliation itself is covered in Walmart Marketplace to Xero: WFS fees and settlements.
None of those is a report in the Seller Center. Each is a join across the Payments Report, WFS charges, ad spend, and your purchase orders.
Illustrative numbers. Take a cast-iron skillet in Home, Kitchen, Decor and Garden, priced at $34.99 with free shipping, fulfilled by WFS. Unit weight 5.2 pounds, boxed at 12 by 10 by 3 inches. Landed cost $13.50.
Fee arithmetic, using the rules on marketplace.walmart.com as of this writing:
A month with 600 units sold and an average of 1,200 on hand:
Two of the questions above answer themselves from this line. The Q4 storage question: from October, units over 30 days carry an added $1.50 per cubic foot per Walmart's page, so the per-unit monthly storage on this skillet rises from $0.16 to $0.47, and 1,200 average units on hand cost $562 a month instead of $187. The ad question: $1,800 of spend on a SKU whose margin before ads is 23.2 percent needs about $7,760 of incremental sales to break even, and whether it got that is a comparison of August to July with ads as the only change.
The Walmart-versus-Amazon question needs the same SKU's Amazon line beside it: the referral rate is 15 percent on both, but Amazon's fulfillment fee for a 6-pound package falls in a different band, and the storage rules differ. The comparison report is built for that side-by-side.
Crunch, the analytics AI inside ConnectBooks, reads reconciled Walmart data alongside Amazon, Shopify, TikTok Shop, and eBay, and answers questions about profit, margins, advertising, inventory, fees, and cash flow. Ask which Walmart SKUs are paying more per unit in fulfillment this quarter than last and whether their price covered it, and it works the chain: what changed across sales, pricing, ads, fees, returns, storage, inventory, and margins; over the two quarters; on which SKUs; why; and what to do. The skillet's fee band, its storage step-up in Q4, and the ad break-even are the kind of finding it returns, because ConnectBooks reconciles Walmart settlements into QuickBooks or Xero at the transaction level with WFS charges, refunds, and landed cost on the SKU line.
It cannot know your package dimensions changed until the WFS fee changes. Walmart measures the unit; the AI sees the fee move afterward and flags it. The cause is in your packaging file, not in the books.
It cannot see a landed cost you did not record. If the skillet's last container had duty allocated at the wrong rate, the $13.50 is wrong, and every margin above is wrong by the same amount.
It cannot tell you whether a return came back through a store or by mail, or what condition it was in. It sees a refund line and, if recorded, a disposition.
It cannot read the Seller Center. Category assignments, listing quality scores, and Pro Seller status live there. Crunch works from the reconciled accounting data.
It takes no action. It does not reprice the skillet over the ten-dollar line, adjust a campaign, or create a removal. It tells you what it found and what it would do, and the Seller Center login stays with you.
Build the skillet line on your own top Walmart SKU. If it takes an afternoon, that is the afternoon reconciled data and a question-answering layer are meant to give back.
Running an e-commerce business comes with plenty of challenges, but ConnectBooks is here to make your life easier. With real-time insights, seamless integrations, and detailed tracking of your profitability and inventory, you can stay ahead of the game. Whether you’re selling on Amazon, Shopify, Walmart, TikTok or eBay, ConnectBooks helps you manage your finances with 100% accuracy and confidence, so you can focus on growing your business.
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