A service where sellers send inventory to Amazon's warehouses and Amazon handles storage, packing, shipping, and customer service. Sellers pay storage and fulfillment fees in exchange.
Understanding FBA (Fulfillment by Amazon)
Fulfillment by Amazon (FBA) is a logistics service where sellers ship their inventory to Amazon's network of fulfillment centers, and Amazon handles all storage, order picking, packing, shipping, customer service, and returns for those products.
In exchange for these services, sellers pay two primary fees: storage fees (monthly charges based on cubic footage of space your inventory occupies) and fulfillment fees (per-unit charges based on item size and weight). During Q4, storage fees increase significantly due to peak-season surcharges.
FBA products are eligible for Amazon Prime and free shipping badges, which significantly increases conversion rates. The trade-off is reduced margins due to fees and less control over the customer experience. Sellers must carefully calculate FBA profitability per SKU to ensure the higher sales volume offsets the additional costs.
Why It Matters for Ecommerce
FBA fees are one of the largest expense categories for Amazon sellers, often consuming 25-35% of the selling price. Accurate accounting of FBA fulfillment fees, storage fees, long-term storage surcharges, removal fees, and reimbursements is essential for understanding true per-unit profitability and making informed inventory decisions.
Practical Example
You sell a product for $30 on Amazon. FBA fees include: $5.50 fulfillment fee, $0.75 monthly storage fee, $4.50 referral fee (15%). Your COGS is $8. Net per unit: $30 - $5.50 - $0.75 - $4.50 - $8.00 = $11.25. Without tracking each fee separately, you might assume your margin is $22 ($30 - $8 COGS) when it's actually $11.25.
Related Terms
Fulfillment Fee
A per-unit fee charged by Amazon FBA or similar services for picking, packing, and shipping an order. The fee varies by item size, weight, and whether the product is standard or oversize.
EcommerceMarketplace Fee
A general term for any fee charged by an ecommerce platform for facilitating a sale, including referral fees, closing fees, and payment processing fees. Directly reduces a seller's net payout.
EcommerceSeller Central
Amazon's web portal and dashboard where third-party sellers manage their listings, inventory, pricing, orders, reports, and advertising. The primary interface for all FBA and FBM operations.
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