FBA Storage Fee Calculator 2026: Storage & Aged Inventory
Estimate Amazon FBA monthly storage, aged-inventory surcharge exposure, removal break-even, and sell-through risk before sending inventory.
What this tool helps you do
Estimate Amazon FBA monthly storage, aged-inventory surcharge exposure, removal break-even, and sell-through risk before sending inventory.
Interactive inputs and calculations load after the app boots. Use this prerendered preview to understand what the tool covers before opening the live experience.
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FBA storage decision before you send inventory
This calculator models packaged item cubic feet, Amazon monthly storage rates, aged-inventory surcharge tiers, shipping-weight removal estimates with an editable override, expected sell-through, and storage cost as a share of gross margin.
Amazon storage rules are volatile enough that a reseller should not rely on one old long-term-storage shortcut. The tool separates standard, oversize, dangerous-goods standard, and dangerous-goods oversize storage, then flags day 181, sharper 271+ tiers, and 366+ per-unit minimums.
Use the decision output before sending a slow batch to FBA, before Q4 storage, or when deciding whether to markdown, remove, liquidate, or switch the item to FBM.
- Best for resellers with packaged dimensions, quantity, shipping weight, expected sell-through, and gross margin per unit.
- Includes current monthly storage and aged-inventory surcharge assumptions checked against Amazon Seller Central help on 2026-08-06.
- Does not include fulfillment, referral, inbound placement, prep, return, low-inventory, or account-specific fees.
Verify the current platform fee
Amazon monthly inventory storage fees
Official Seller Central monthly FBA storage fee reference.
Amazon aged inventory surcharge
Official Seller Central aged-inventory surcharge reference.
Amazon 2026 FBA removal, disposal and liquidation order fee changes
Official Seller Central removal/disposal fee-change reference for the shipping-weight estimate.
Frequently Asked Questions
How much can FBA storage increase during peak season?
Amazon monthly storage rates are higher in October through December. For standard-size inventory, the checked 2026 example rate is $0.78 per cubic foot for January through September and $2.40 per cubic foot for October through December. The calculator lets you switch seasons so Q4 storage is not hidden inside a single annual average.
What is the 181-day FBA aged-inventory surcharge?
Amazon aged-inventory surcharge tiers begin at 181 days for many categories, then rise through later 211, 241, 271, 301, 331, 366, and 456+ day tiers. The current help language also uses per-unit minimums in the 366+ tiers and excludes clothing, shoes, bags, jewelry, and watches from the early 181-270 day tiers. Verify the SKU category in Seller Central before relying on an exclusion.
How do I calculate FBA storage cost per unit?
Measure the packaged product in inches, multiply length x width x height, divide by 1,728 to get cubic feet, then multiply by quantity and the monthly rate. The calculator converts that into monthly storage, total storage for the entered period, aged surcharge exposure, and per-unit cost.
Should I remove, markdown, or keep slow FBA inventory?
Compare current surcharge exposure, expected monthly sell-through, gross margin per unit, shipping-weight removal estimate, and any Seller Central SKU-specific override. If storage is taking a large share of margin or the aged surcharge is approaching removal cost, the calculator flags markdown, removal, liquidation, or sending fewer units rather than blindly holding inventory.
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