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This article applies to selling in: United States

FBA inventory storage limits

Note: Effective January 1, 2022, the IPI threshold for storage limits is 400 (previously 450).

To better manage fulfillment center storage space, so that products are received and shipped to buyers more quickly, inventory storage limits can be applied. Storage limits are based on volume (measured in cubic feet) and are set for each storage type. Your current limits, potential storage limits, and usage are shown when you expand Storage Volume, which you can view in your Inventory performance dashboard and Shipping Queue.

Storage limits criteria

Individual selling accounts have a set storage limit of 10 cubic feet, and this value does not change. Individual selling accounts are not subject to storage limit increases.

Professional selling accounts may or may not have storage limits, depending on the following criteria:

  • Sellers who maintain an Inventory Performance Index (IPI) of the required threshold or above on either of two score checkpoints will not be subject to storage volume limits for standard-size, oversize, clothing, and footwear items.
  • New sellers who have been active for less than 26 weeks, or sellers without enough sales data to generate an IPI score during both of the two score check weeks will not receive storage limits.

Professional accounts that do have storage limits will still have a minimum of 25 cubic feet for standard, oversize, clothing, or footwear inventory.

Professional account holders can track their Inventory Performance Index in the Inventory performance dashboard and learn about IPI on the IPI Help page. The dashboard provides a hub for optimizing your FBA business, including customized recommendations to grow your sales and reduce costs. Your IPI score is updated weekly based on your ongoing inventory management.

Storage limits are calculated using several factors including:

  • Your sales volume (including your sales' seasonality periods)
  • Your historical IPI scores
  • Available fulfillment center capacity

Sellers with consistently higher IPI scores will receive higher storage limits, adjusted for sales volume and available capacity. When setting limits for an upcoming quarter, Amazon considers both your recent sales volume and seasonal volume from the last year.

Storage types

Storage limits are applicable for six storage types: standard-size, oversize, apparel, footwear, flammable, and aerosol. To see which storage types your products are categorized as and how much cubic feet or meter they occupy, go to FBA inventory age and the Inventory Age report.

If you do not see a storage type in your Storage Volume, it is because you have a limit of zero for that storage type.

Dangerous goods storage limit adjustments (flammable and aerosol) are handled separately from other storage types. See FBA Dangerous Goods program for more details.

Note: Amazon determines the storage type of your inventory based on the characteristics of the product. Storage type is not a category that sellers can adjust. Products are not classified by more than one storage type.

Calculating cubic feet from inches

  1. Multiply length x width x height in inches to get the volume.
  2. Divide the volume by 1,728, which is 12 cubic inches.

Example: A unit measuring 47 x 12 x 10 inches divided by 1,728 = 3.3 cubic feet.

Note: Amazon may verify the weight and dimensions of a product using representative samples. Amazon’s information about a product’s weight and dimensions will be used to calculate fees if there is a difference between Amazon’s information and a seller’s information. Amazon may change its information about a product’s weight and dimensions from time to time to reflect updated measurements. Fees based on the weight and dimensions of a product are calculated using Amazon’s information about the weight and dimensions of that product at the time the fee is calculated.

Exceeding your FBA storage limit

Under the FBA inventory storage limits policy, you will not be able to create a new shipment to Amazon for a storage type until your inventory level drops below your limit for that storage type.

For example, if your current limit for standard-size inventory is 25 cubic feet and you have 26 cubic feet of standard-size inventory at an Amazon fulfillment center, you cannot create a new standard-size inventory shipment. However, if you are below your storage limit for oversize inventory, you can create shipments of oversize inventory.

If you send more inventory than what your storage limit allows, the extra inventory may be refused at the fulfillment center. For more information, see Shipping and routing requirements.

Storage overage fees will be charged if your existing inventory exceeds your storage limit for any storage type on any day within a given month. To learn more, visit Overage fee.

Reducing inventory

There are three ways to decrease the amount of inventory you have in an Amazon fulfillment center:

  • Sell more inventory. Manage Excess Inventory provides recommendations to increase sales.
  • Request to have inventory returned to you by creating a removal order.
  • Request to have inventory disposed of by creating a removal order.

For more information, see Remove inventory (overview).

Important: When you submit a removal order or make similar changes, the Storage Volume won't reflect the changes until your request is moved to Pending. Typically, this happens on the following day. Customer returns contribute to your overall inventory count.

Frequently asked questions

Can I purchase storage space?

No, storage space cannot be purchased.

Can I change the storage type of a product?

No. Storage types are determined by Amazon based on the characteristics of a product.

You can check which storage type your products are categorized as and how much cubic feet they occupy on the FBA inventory age page.

Can I trade space for one storage type with space in another storage type?

No. Inventory cannot be traded between storage types.

What happened to the hazmat storage type?

The storage type previously referred to as “hazmat” has been converted into two new storage types: aerosol and flammable. Storage limit adjustments for aerosol and flammable storage types are handled separately. See FBA dangerous goods (hazmat) program for more details.

What if I do not have an IPI score or am a new FBA seller?

Most sellers with Professional selling accounts have an IPI score but some do not, because we do not have enough data to generate a score for the account. This is usually the case for sellers who are new to FBA or have small quantities of FBA inventory.

After you first receive an IPI score, you will not be subject to storage limits for two full storage limit cycles.

You can view the date you received your first IPI score by clicking the Show details link under the IPI score color bar. This will reveal your Historical performance index and your First IPI score date will be visible above the graph.

Most sellers will receive their first IPI score approximately 15 weeks after their first product is received by FBA.

Visit the Inventory performance dashboard for recommendations on managing your inventory.

Will my FBA inventory storage limits change?

We continually assess our network capacity to find opportunities to increase storage limits. You can see your most up-to-date storage limits by expanding Storage Volume at the bottom of the Inventory performance dashboard. Please note that Selling Partner Support does not provide further guidance.

My IPI score has increased. Can my storage limits be reviewed immediately?

No. Your current storage limit remains in effect until the next adjustment cycle. We encourage you to take actions to maintain your IPI score in time for the next storage limit cycle.

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