If your existing inventory exceeds your storage limits for a given month, you will be charged an inventory storage overage fee in addition to monthly inventory storage fees and, if applicable, long-term storage fees. The overage fee is based on how many days your storage limits are exceeded. This charge will occur even if your inventory is subsequently reduced to a level below your storage limits allocated for that month. It will be charged monthly at 31,727JPY per cubic meter based on the daily average volume (measured in cubic meters) for any space your inventory occupies in fulfillment centers beyond your storage limits. For more information, go to FBA inventory storage limits.
The volume measurement is based on unit size when properly packaged and ready to ship in accordance with FBA policies and requirements. Amazon reserves the right to measure or weigh packaged units or representative samples and to determine the storage type. In the event of any conflict between an Amazon measurement and information provided by the seller, Amazon's measurement will govern.
You can check the status of your inventory limit at any time by viewing the Storage volume on the Inventory Performance dashboard or in the Shipping Queue, and you'll see an alert icon if you're over your limit. If you're over your limit, you can calculate your current overage for that storage type by subtracting your current usage from your current storage limit. We'll also send you monthly alerts if you're over your limit for each storage type and you'll incur inventory storage overage fees.
The Inventory Storage Overage Fees report provides the inventory storage overage fees for each storage type and day your inventory in fulfillment centers exceeded your storage limits. This month-end report is available for download starting the second day of the following month.
Report field names
|Download header||Description||Example value|
|incur_date||Date the usage exceeded the limit and when the estimated fee applies. The format is month-day-year.||8/1/2020|
|country_code||Country in which the overage usage occurred.||JP|
|storage_type||Type of storage for which the usage has exceeded the limit and an estimated fee applies.
Note: sortable is the same as Standard-size; non_sortable is the same as Oversize.
|Sortable or Non_Sortable|
|charge_rate||Monthly inventory storage overage fee rate for a storage type.||31,727|
|storage_usage||Storage usage on the charge date. This applies to the storage type for which usage exceeded the limit and an estimated fee applies.||30.8|
|storage_limit||Storage limit for the storage type that exceeded its limit and for which an estimated fee applies.||28|
|storage-overage||The volume of storage usage that exceeded the storage-type limit on the charged date.||2.8|
|storage-measurement||Unit of measurement for the storage limit, usage, and overage.||cubic meter|
|estimated-fee||Amount of the inventory storage overage fee that was incurred by this storage type on the charged date.||88,835|
|currency||Currency of the overage fee.||JPY|
We provide an estimate of your monthly inventory storage overage fee by storage type using the following formula:
Estimated monthly overage fee = (current overage x daily overage rate x charge days remaining in month) + monthly overage fees incurred to date
Current overage = current usage – current limit
Daily overage rate = 31,727JPY / number of days in current month
Charge days remaining in month = number of days in current month – current day number + 1
If you have a Professional selling account and your IPI score is less than the required threshold on both of two score checkpoints before a quarter , you are subject to inventory storage limits. If you've exceeded your current limits for a given storage type by the end of the day, for any day in a given month, you'll be subject to the overage fee. This charge will occur even if your inventory was subsequently reduced to a level below your storage limits allocated for that month.
Current usage is a real-time representation of your on-hand inventory minus any pending removals. Manage Inventory Health provides a list of all of your FBA listings, along with their storage type (standard-size, oversize, apparel, footwear) and how much volume the ASIN is taking up (Available units x volume per unit = cubic meter). This information is also available via the Manage Inventory Health report.
While the Inventory Age data is good way to approximate current usage, it may not match your current usage value displayed on the Storage volume for a few reasons.
You'll be charged applicable inventory storage overage fees after the end of the month in which the fees were incurred. For example, let’s say that you exceeded your storage limit on July 1 and removed inventory to a level below your limit by July 5. On August 1, you would be charged for the four days you were over the limit in July.
If your existing inventory exceeds your storage limits for a given month, you'll be charged an inventory storage overage fee. Storage limits are calculated based on available fulfillment center capacity, historical IPI scores, and your sales volume. For more information about how storage limits are determined, go to FBA inventory storage limits.
Excess inventory is calculated based on a different set of rules. Visit Inventory Performance Help page to learn more about excess inventory.
If you're over your storage volume limits, but you don't have excess inventory, we suggest you reduce or remove your oldest or slowest-moving inventory as soon as possible.
You can submit disputes when you believe you have been charged incorrectly up to 90 days from the date the fee was applied to your account.
To see if you're eligible for an overage fee reimbursement due to dimension issues, go to FBA fees reimbursement policy: Weight and dimensions.