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FBA vs AWD vs 3PL storage cost per unit

Enter one shipment and see what it costs to store in FBA, AWD or your 3PL. FBA and AWD use Amazon’s 2026 US rates. Freight, placement and 3PL costs are your own numbers.

Your shipment

Leave blank to use case volume divided by units per case.

Sells down evenly assumes stock drops at a steady rate across the months stored.

FBA option

Use your own figure from Seller Central, since it varies by shipment and placement option.

AWD option

Uses $1.05 per box inbound processing, a promotional rate for eligible shipments received through December 31, 2026. Plans that start after that use $1.40.

Adds AWD transportation at $1.40 per cubic foot, or $1.26 at the Amazon managed rate.

3PL option

Use your 3PL's quote, and turn on placement if the 3PL to FBA shipment pays your FBA placement fee.

Your results

How the math works

  • FBA storage uses unit cubic feet and the rate for each month, so October to December months cost more.
  • AWD and 3PL storage use case cubic feet, so empty space in the case counts.
  • AWD inbound and outbound processing are charged per box.
  • AWD pricing covers FBA inbound placement, so no placement fee is added to the AWD option.
  • Since July 31, 2026, AWD accepts only units under 18 x 14 x 8 in and under 20 lb. Oversize items, and units whose entered unit cubic feet is too big for that size, are compared across FBA and 3PL only.
  • Oversize stock already in AWD, or in AWD shipments created before July 31, 2026, can stay and keep replenishing to FBA. This tool plans new shipments.
  • The AWD and 3PL totals stop when units ship to FBA. They do not include FBA storage after replenishment.
  • Freight, placement and 3PL rates are your own numbers. The tool does not look them up.
  • Not included: aged inventory surcharges, the FBA storage utilization surcharge, prep, labeling, fulfillment fees or referral fees.

Rates: Amazon 2026 US published rates, checked Oct 2026.

These are estimates from published rates and your inputs, so check your actual fees in Seller Central. Amazon Storage Pros is not affiliated with or endorsed by Amazon.

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