Preparing Shipments for Amazon FBA: A Logistics Guide

Selling through Amazon's Fulfilled by Amazon (FBA) program shifts storage, packing, and shipping responsibility to Amazon once inventory arrives at one of their fulfillment centers, but getting inventory to that point compliant with Amazon's specific requirements is entirely the seller's responsibility, and getting it wrong can mean rejected shipments, unexpected fees, or delayed inventory availability.

Packaging and labeling requirements are exacting and specific to Amazon's own fulfillment center processes, which are heavily automated and depend on consistent, correctly formatted labeling to function efficiently. Each unit typically needs its own scannable barcode — either the product's own UPC/EAN or an Amazon-specific FNSKU label, depending on your specific enrollment in Amazon's brand and catalog programs — and getting this labeling wrong or inconsistent is one of the most common reasons FBA shipments face processing delays or rejection at the receiving center.

Carton and pallet preparation follows Amazon's own specific standards for maximum weight, dimensions, and labeling of the outer shipping cartons themselves, separate from the individual unit labeling — these requirements are published and updated periodically by Amazon, and it's worth checking current requirements before every shipment rather than assuming requirements from a previous shipment still apply exactly, since Amazon does periodically revise these specifications.

International sellers shipping inventory into Amazon's fulfillment network from overseas face the additional layer of standard international shipping and customs clearance before goods even reach the point where Amazon's own FBA-specific requirements apply — meaning the shipment needs to satisfy both the destination country's standard import requirements and Amazon's own fulfillment center intake requirements, in sequence, and a delay or issue at either stage holds up the entire process.

Choosing how to route inventory into Amazon's network involves real tradeoffs — shipping directly to a single Amazon fulfillment center is simpler to coordinate but means Amazon then redistributes inventory to other centers closer to actual customer demand (sometimes at a cost or delay to the seller), while using an Amazon-partnered or seller-arranged multi-destination shipping approach can get inventory positioned closer to demand faster but requires more coordination on the seller's side to split and route shipments correctly.

For sellers new to FBA, it's worth building a specific FBA shipment preparation checklist — separate from your general shipping documentation checklist — covering unit labeling, carton labeling, and dimensional and weight requirements specifically, and reviewing it against Amazon's current published requirements before every shipment rather than relying on memory of what worked previously. Given how frequently Amazon's specific requirements can be revised, and how strictly they're enforced at the receiving center, this kind of active, current verification is worth the small amount of extra time it takes relative to the cost and delay of a rejected shipment.

Inventory placement strategy across Amazon's fulfillment network deserves ongoing attention rather than a set-and-forget approach, since Amazon's own algorithms for distributing and recommending inventory placement across fulfillment centers are optimized primarily for Amazon's own network efficiency, which doesn't always perfectly align with a seller's own cost optimization goals. Regularly reviewing your actual storage and inbound shipping costs, and understanding how your chosen shipping and placement strategy affects them, helps identify whether adjustments to your approach could reduce total fulfillment cost without compromising the delivery speed that FBA's Prime-eligible shipping is meant to provide.

For sellers scaling FBA volume significantly, it's worth building a relationship with a freight forwarder who has specific experience preparing and shipping FBA-bound inventory, particularly for international sellers shipping into Amazon's fulfillment network from overseas, since this combination of standard international shipping compliance and Amazon-specific preparation requirements is enough of a specialized niche that a forwarder with direct, demonstrated FBA experience can meaningfully reduce the friction and error rate compared to working with a generalist without that specific background.