If you sell on both Amazon and Walmart, or you're deciding where to expand, you'll end up comparing FBA (Fulfillment by Amazon) with WFS (Walmart Fulfillment Services). Day to day they work almost the same way: you ship inventory in and the platform picks, packs, ships and handles customer service. Where they differ is the fee structure, and that changes your margin product by product.
Here's how the two compare in 2026.
How they work
Both programs follow the same pattern. You send inventory to the platform's warehouses, they store it and ship each order, and they handle customer service and returns. In exchange you get the platform's fast-shipping badge, which helps you win the Buy Box.
Operationally you won't notice much difference. Financially you will.
Fee comparison: FBA vs WFS in 2026
Fulfillment fees (per unit)
- FBA starts around $3.30 for small standard items and rises with size and weight (large standard is roughly $4.98 and up, oversize much higher). Since April 2026 a 3.5% fuel surcharge sits on top of fulfillment fees, and in January 2026 Amazon raised fulfillment fees by about $0.08 per unit on average.
- WFS starts around $3.45 per unit for the lightest weight tier and steps up by weight bracket.
The base rates are close. FBA just has more charges stacked on top, covered below.
Storage fees
- FBA: $0.75/cu ft from January to September, then $2.40/cu ft in Q4 (October to December). Long-term storage surcharges apply to aged inventory.
- WFS: roughly $0.75/cu ft from January to September, also higher in Q4.
Off-peak storage costs about the same on both. Both get expensive for slow movers in Q4.
The extra FBA charges
FBA ends up costing more than its base fee suggests. On top of fulfillment and storage, Amazon can charge:
- inbound placement fees if you don't use Amazon's partnered carrier
- low-inventory fees, per unit, when you're understocked
- aged-inventory surcharges
- the 3.5% fuel surcharge on fulfillment
WFS has fewer of these. Even when base fulfillment fees look similar, your all-in cost per unit is usually easier to predict on WFS, and often lower once you count FBA's surcharges.
New-seller incentives
Walmart's 2026 incentives include sizable WFS discounts for new sellers (lower fulfillment and storage fees during a launch period). If you're just starting on Walmart, that pushes the math further toward WFS for your first months.
A worked example
Take a small, light Home & Kitchen item selling at $24.99, with a 15% referral fee on both platforms:
| Line | Amazon FBA | Walmart WFS |
|---|---|---|
| Selling price | $24.99 | $24.99 |
| Referral fee (15%) | −$3.75 | −$3.75 |
| Fulfillment | −$3.30 | −$3.45 |
| Fuel surcharge (3.5% of fulfillment) | −$0.12 | n/a |
| Storage (amortized, fast mover) | −$0.10 | −$0.10 |
| Possible inbound/low-inventory fees | −$0.20+ | n/a |
| Approx. platform cost/unit | ~$7.47+ | ~$7.30 |
It's close. The FBA column has more variable charges that can push it higher, while the WFS column stays put. With a heavy item both fulfillment fees go up, and which one wins depends on the exact weight tiers.
Which one should you use?
WFS usually makes more sense when you sell on Walmart and want fewer, more predictable fees, when you're a new Walmart seller eligible for the discounts, or when your products are small, light and sell quickly.
FBA makes more sense when Amazon is your main volume channel and Prime conversion matters, or when most of your logistics and inventory already live there.
If you sell on both platforms, use both. Nothing forces you to pick one fulfillment method for your whole catalog, and plenty of sellers run FBA on Amazon and WFS on Walmart side by side.
Inside Walmart you also have to choose between WFS and shipping orders yourself (FBM). That decision has its own article: WFS vs FBM.
WallScout's profit calculator uses real 2026 Walmart fees (WFS weight tiers, referral by category, and an FBM toggle) right on the product page, so you see your Walmart net before you buy. Start a free trial →
Frequently asked questions
Is WFS cheaper than FBA? Often, yes. Base fulfillment fees are close (about $3.30 on FBA and $3.45 on WFS for light items), but FBA adds more surcharges: fuel, inbound placement and low-inventory fees. For many products that makes WFS cheaper all-in and easier to predict, especially for new sellers who qualify for Walmart's WFS discounts.
Can I use both FBA and WFS? Yes. If you sell on Amazon and Walmart, you'd normally use FBA for Amazon orders and WFS for Walmart orders. They're separate programs with separate inventory.
Do FBA and WFS charge the same referral fee? Referral fees are set by the marketplace, not the fulfillment method. Most categories are 15% on both Amazon and Walmart, so the referral cost is usually identical. The difference comes from fulfillment and storage.
Is WFS worth it for a new Walmart seller? Often, especially in 2026. Walmart's new-seller incentives include WFS fee discounts, and WFS delivery speed helps you win the Buy Box. Still check it product by product, because heavy or slow-moving items can be cheaper to ship yourself (FBM).
Know your real Walmart fulfillment cost before you buy. Try WallScout free for 7 days.