FBA first-leg shipments are mostly consolidated shipment models (less-than-container load by sea, consolidated air shipments), not shipping a whole truck or a single item to you.
After the seller's goods arrive at the freight forwarder's domestic warehouse, they cannot be immediately loaded into containers/equipment, which leads to warehouse occupancy and therefore storage fees.
Three key scenarios that generate storage fees:
1. Waiting to consolidate shipments
The freight forwarder receives goods from dozens or hundreds of Amazon sellers every day and needs to:
- Accumulate enough goods to fill a full container for sea shipments or a full pallet for air shipments
- Schedule shipping dates and flights uniformly
If your goods arrive but a full container/pallet isn't ready yet or the departure date hasn't arrived, they have to be temporarily stored in the warehouse.
2. Seller delays or early delivery
If you deliver goods to the freight forwarder 7–10 days in advance but the shipping schedule hasn't arrived:
- If the original shipping date/flight is missed, the goods are forced to stay in the warehouse waiting for the next shipment
- The longer they stay, the higher the storage fee
3. Goods requiring secondary handling and temporary storage
FBA goods must undergo: FBA labeling, repackaging, palletizing, reinforcing, sorting, and warehouse allocation
These operations require queuing and batch processing, and warehouse occupancy is accounted for during the waiting period for these operations.