Aged Inventory Surcharge
A graduated monthly surcharge on FBA inventory that has been stored 181+ days, escalating with age.
The Aged Inventory Surcharge is a monthly fee Amazon charges on top of standard storage fees for FBA units that have been stored for 181+ days without selling. The surcharge escalates with age: small at 181-270 days, larger at 271-365 days, and substantial at 365+ days, where the Long-Term Storage Fee also kicks in.
The purpose is to incentivize sellers to clear slow-moving inventory instead of letting it occupy warehouse space indefinitely. Combined with the standard Q4 storage surcharge, aged inventory can cost more in storage fees than the unit's gross profit margin — silently turning slow movers into net losses.
The defensive playbook: identify aged inventory monthly via the FBA Inventory Age Report, take aggressive markdowns or removal orders on units approaching 180 days, and re-evaluate whether the SKU should remain in FBA at all. SellerVault's inventory dashboard projects aged inventory cost forward so you can see the future fee impact of decisions you make today.