Capacity Limits
Amazon's monthly cap on how much storage volume an FBA seller can use, set per account based on IPI and sales history.
Capacity Limits (formerly "Storage Limits") are the cap Amazon places on the cubic feet of FBA storage your account can use. Each seller gets a monthly limit set 2-4 weeks before the start of the month, based on a combination of historical sales velocity, IPI score, and Amazon's overall warehouse capacity. The limit is broken down by storage type (standard, oversized, apparel, footwear, etc.).
When you exceed your capacity limit, Amazon stops accepting new inbound shipments for the over-limit category until you sell down or pay for additional capacity through the Capacity Manager auction. Persistently low IPI scores reduce your limit; consistent high velocity raises it.
For large catalogs, capacity limits are the single biggest constraint on restock planning. SellerVault's restock engine factors in remaining capacity per storage type and warns before recommendations would push you over the limit. Manual restock planning without capacity awareness regularly leads to canceled inbound shipments.