Amazon FBA (Fulfillment by Amazon)
Amazon FBA (Fulfillment by Amazon) is a fulfillment programme in which sellers send their goods to Amazon fulfillment centers and Amazon handles storage, packing, shipping, customer service and returns. The seller remains the owner and seller of the goods but outsources the operational logistics to Amazon.
Amazon FBA (Fulfillment by Amazon) is a logistics and shipping programme of the Amazon marketplace in which sellers deliver their products to Amazon fulfillment centers and Amazon takes over the entire operational handling: storage, picking, packing, shipping to the end customer as well as customer service and returns processing in the respective local language. The seller legally remains the seller and owner of the goods and retains pricing control – only the physical fulfillment service and the infrastructure required for it are outsourced.
The central incentive for FBA is Prime eligibility: items shipped via FBA are automatically qualified for Amazon Prime and displayed with the Prime badge, fast shipping and often more prominent placement in the Buy Box. FBA is therefore far more than pure warehousing – it couples logistics directly to visibility and conversion on the marketplace. Billing is usage-based via storage and fulfillment fees, turning logistics into a variable cost item. The counter-model, in which the seller ships themselves, is called FBM (Fulfillment by Merchant).
At a glance
- Amazon handles storage, pick-and-pack, shipping, customer service and returns
- Goods remain the seller's property; only the logistics are outsourced
- Automatic Prime eligibility – the core advantage for visibility and the Buy Box
- Costs: storage fees (by volume/time) plus fulfillment fees per unit
- To be distinguished from FBM (self-shipping) and general 3PL/fulfillment
How Amazon FBA works
The process starts with the seller listing their products in Amazon Seller Central as FBA items and creating an inbound shipment to a fulfillment center assigned by Amazon. The goods are labelled, delivered, received there and distributed across the Amazon warehouse network. From that point on, Amazon manages the inventory and shows it as available on the marketplace. When an order comes in, Amazon picks and packs the item, ships it and handles enquiries and returns independently.
For the end customer, the purchase is indistinguishable from a direct shipment by Amazon – they receive Prime conditions, Amazon packaging and the usual customer service. The seller sees their sales, inventory and fee statements in Seller Central and is paid out the sales proceeds minus the referral fee and FBA fees. Inventory can be distributed across multiple fulfillment centers; Amazon optimises storage locations by demand and shipping routes.
FBA fee structure at a glance
FBA costs consist of two blocks. The fulfillment fee is charged per unit sold and depends on the size and weight of the product. The storage fee is calculated per cubic meter and month and rises significantly during peak season (Q4); for slow-moving goods, additional long-term storage fees apply. These fees are independent of the general referral fee that Amazon charges on every marketplace sale. The usage-based structure makes FBA attractive for fast-moving items, but it can become expensive for heavy, bulky or slow-selling products – which is why a clean contribution-margin calculation before entering FBA is decisive.
Why sellers rely on Amazon FBA
The most important driver is Prime eligibility and the visibility associated with it. Prime customers often filter specifically for accordingly labelled offers, and FBA offers tend to win the Buy Box more easily – a direct lever on revenue. Added to this is scalability: Amazon brings a widely branched warehouse network, well-established processes and volume conditions, so that even revenue peaks and international demand can be served without an own logistics investment.
Another advantage is relief from operational effort: Amazon handles customer service and returns processing in the respective local language, which saves resources especially in cross-border selling. The flip side is a noticeable loss of control and data – the seller gives up inventory control, the packaging experience and part of the customer relationship, and enters into a strong dependency on Amazon's rules, fee changes and storage capacity limits. Aspects such as commingled inventory (mixing identical items from several sellers) and the risk of FBA suspensions are also among the risks that need to be weighed.
Amazon FBA in the ERP system
FBA shifts the physical logistics to Amazon but does not release the seller from clean inventory management. In the ERP system, FBA inventory is usually mapped as a separate storage location so that the system inventory and the inventory actually held at Amazon stay in sync. Via the Amazon interface (SP-API or marketplace connectors), the ERP retrieves inventory, orders, shipping confirmations, returns and fee statements. Without this coupling, actual and posted inventory drift apart – with overselling on other channels and false availability statements as a consequence.
FBA is particularly relevant for sellers with multiple sales channels: anyone selling in parallel via their own shop, additional marketplaces and FBA needs central inventory synchronisation so that the same goods are not sold twice. The ERP also takes over the accounting side – revenues, commissions and FBA fees must be correctly allocated for financial accounting. Many e-commerce-oriented ERP and multichannel systems come with ready-made Amazon connectors that automatically import FBA and FBM orders, inbound shipments and fees.
Inventory control and replenishment with FBA
Amazon limits the quantity that can be stored per seller and period via capacity limits, which is why replenishment to the fulfillment center must be actively planned. The ERP helps determine the optimal replenishment time: based on sales velocity, lead time and safety stock, inbound shipments can be timed so that neither expensive long-term storage fees nor out-of-stock situations arise. In multichannel selling, a separate view of FBA and own-warehouse inventory is recommended in order to cleanly control replenishment and availability per channel.
Distinction: Amazon FBA vs. FBM and 3PL
FBM (Fulfillment by Merchant) is the direct counter-model: here the seller also sells via the Amazon marketplace but ships themselves from their own warehouse or via their own service provider. With FBM, Prime eligibility is only achievable via the demanding "Seller Fulfilled Prime" programme. FBM gives more control over packaging, inventory and the customer relationship but requires own logistics capacity. Many sellers combine both models – fast-moving goods via FBA, bulky or slow items via FBM.
FBA differs from general 3PL (third-party logistics) through its close ties to a single marketplace. A classic 3PL or fulfillment service provider ships across channels – shop, several marketplaces, B2B – and remains neutral, whereas FBA inventory primarily serves sales via Amazon. With the "Multi-Channel Fulfillment" (MCF) programme, FBA inventory can also be used for orders from other channels, but the goods remain within the Amazon ecosystem. FBA is thus a marketplace-bound special case of fulfillment, not a vendor-neutral 3PL.
DACH specifics of Amazon FBA
In the German-speaking region, FBA brings additional tax and legal obligations. Anyone storing goods in a German Amazon warehouse generally needs a German VAT identification number; cross-border storage – for example via the pan-European FBA programme or the Central Europe programme with warehouses in Poland and the Czech Republic – can trigger tax registration obligations in further countries. The correct VAT treatment of these intra-Community movements of goods is a frequent stumbling block.
Added to this are product-related compliance requirements: the Packaging Act (registration with the central authority LUCID and licensing), the Electrical and Electronic Equipment Act (WEEE) as well as labelling obligations. In accounting terms, FBA inventory remains an asset of the seller and must be inventoried and documented in a GoBD-compliant way – the inventory and movement data pulled from Seller Central or via the interface form the basis for this. Because of the strong dependency on Amazon, it is also advisable to keep a possible retreat to an own warehouse or to a neutral service provider open contractually and technically.
Example
Example: A mid-sized seller starts with Amazon FBA
A manufacturer of kitchen accessories has so far sold only via its own shop and is hitting capacity limits in shipping. To become visible on the Amazon marketplace, it registers its bestsellers for FBA, creates an inbound shipment in Seller Central and sends a pallet of the fast-moving items to the assigned fulfillment center. From the moment they are received, the offers carry the Prime badge and win the Buy Box significantly more often.
The FBA inventory is mapped in the ERP as a separate storage location and synchronised via the Amazon connector: sales, shipping confirmations, returns and FBA fees flow automatically into inventory management and accounting. Because the same item also sells in the own shop, central inventory synchronisation ensures nothing is sold twice. Based on sales velocity, the seller plans replenishment so that it avoids long-term storage fees and stays able to deliver during the Christmas season – without adding its own warehouse staff.
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