FBO vs FBS on Marketplaces: Which Fulfillment Model to Choose
Basics4 minInnovialabs editorial team
In short
With FBO you ship stock to the marketplace warehouse and it handles storage and delivery, which is faster for buyers but freezes your stock; with FBS goods stay in your warehouse and you pack each order, which gives control but adds daily work.
The short answer
- FBO (Fulfillment by Operator) — you deliver goods in bulk to the marketplace warehouse. The marketplace stores them, picks, packs and delivers orders, and handles returns.
- FBS (Fulfillment by Seller) — goods stay in your own warehouse. For each order you pick and pack it yourself, then hand it over to the marketplace at a drop-off or sorting point, and the marketplace delivers it to the buyer.
Amazon calls the same idea FBA and FBM. Uzum Market, Wildberries and Ozon all offer variants of both models, and some also offer a scheme where the seller delivers to the buyer directly (DBS, realFBS). Names, fees and rules differ by platform and change over time, so always check the current conditions in the seller portal.
Neither model is better in general. FBO buys speed and less routine work at the cost of control over stock. FBS keeps control at the cost of daily operations.
Side-by-side comparison
| Factor | FBO | FBS |
|---|---|---|
| Who stores goods | Marketplace | You |
| Who packs orders | Marketplace | You |
| Delivery speed to buyer | Usually faster: goods are already in the network | Slower: one more step from your warehouse |
| Main costs | Inbound logistics, storage, acceptance, marketplace logistics | Your warehouse, staff, packaging, transport to drop-off point |
| Stock flexibility | Low: goods are "locked" in the warehouse | High: same stock can serve several channels |
| Daily workload | Low after shipping a batch | Every order must be packed on time |
| Main risks | Paid storage of slow sellers, losses and disputes on acceptance | Late shipments, cancellations, overselling |
Costs: look at the full picture
Comparing only the commission percentage is a mistake. Calculate the cost per sold unit for each model:
- FBO: transport to the marketplace warehouse, acceptance, storage (often depends on volume and duration), marketplace logistics fees, return handling.
- FBS: rent and staff of your own warehouse, packaging materials, labels, daily trips to the drop-off point, the cost of errors and penalties.
Bulky, slow-moving goods can become expensive on FBO because of storage fees. Small, fast-selling goods are usually cheaper to handle there.
Delivery speed and visibility
Buyers prefer fast delivery, and marketplaces take this into account: delivery time is often shown on the product card, and many platforms let buyers filter or sort by it. Because FBO goods are already inside the marketplace logistics network, they usually arrive sooner. Exact ranking rules are not public, so do not count on FBO alone to lift a product — price, reviews, content and stock availability matter too.
Stock risks
FBO:
- Money is frozen in goods sitting in another company's warehouse.
- If demand falls, you pay for storage or pay again to take goods back.
- Stock has to be distributed across regional warehouses, otherwise distant buyers get slow delivery.
- Discrepancies at acceptance and lost items lead to disputes.
FBS:
- If stock is not synced across channels, you can sell an item that has already been sold elsewhere.
- Missing the shipping deadline leads to cancellations and penalties, and can hurt your seller rating.
How to choose
FBO usually fits when:
- Goods are small, standard and sell steadily.
- Demand is predictable enough to plan batches.
- You do not have a warehouse or a team to pack orders daily.
FBS usually fits when:
- You have many SKUs with slow or unpredictable demand.
- Goods are bulky, fragile, expensive or made to order.
- You sell through several channels from the same stock — your own website, Telegram, retail.
- You already have a warehouse and staff.
A hybrid model is common: bestsellers go to FBO for speed, the long tail stays on FBS.
Common mistakes
- Choosing by commission alone without counting storage and logistics.
- Shipping too much stock to FBO "just in case".
- Running FBS without automatic stock sync between the marketplace, your site and your accounting system.
- Ignoring shipping deadlines in FBS during peak seasons.
For FBS and hybrid setups, an integration via the marketplace API with your inventory or 1C removes most manual work: stock levels update automatically, and new orders arrive in one place.