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Amazon storage fee calculator

Monthly storage and aged inventory fees for FBA stock.

Quick answer

Amazon US charges MX$15.60 per cubic foot a month for standard-size items in January–September and MX$48.00 in October–December. Stock over 180 days old adds an aged surcharge.

Start from an example:

Your inventory

units
ft³
Packed L × W × H in inches ÷ 1,728.
Size group
Month
days
Days since the units arrived at Amazon.

Rates (edit if Amazon changes them)

$
$
$
$
$
Only if your storage ratio is over 22 weeks. Standard-size: MX$8.80–MX$37.60 per ft³.
$
Leave blank to use the 2026 aged surcharge table.

Estimate based on 2026 Amazon US rates for non-dangerous goods. Amazon bills on average daily volume; check your Inventory Age report.

How Amazon storage fees work

  • Monthly storage fee

    cubic feet × monthly rate

    Standard-size: MX$15.60 per ft³ (Jan–Sep), MX$48.00(Oct–Dec). Oversize: MX$11.20 and MX$28.00. Billed on the average daily volume you store.

  • Aged inventory surcharge

    cubic feet × aged rate

    From 181 days: MX$10.00–MX$30.00 per ft³, then MX$109.00–MX$118.00 from 271 days. From 366 days it is MX$138.00 per ft³ or MX$6.00 per unit, and from 456 days MX$158.00 or MX$7.00 per unit, whichever is more.

  • Storage utilization surcharge

    Added only for Professional sellers with high stock relative to sales (over 22 weeks of supply) and at least 25 ft³ on average. Enter it if it applies to you.

Frequently asked questions

How do I find the cubic feet of a unit?

Multiply the packed length, width and height in inches, then divide by 1,728. A 10 × 8 × 3 in box is 0.14 ft³.

When is the aged inventory surcharge charged?

Amazon assesses it monthly, around the 15th, on units that have been in its warehouses for more than 180 days.

Why are Q4 storage fees so high?

From October to December, standard-size storage costs MX$48.00 per ft³, about 3× the January–September rate, because warehouse space is in demand.

How can I avoid aged inventory fees?

Send smaller batches more often, run deals or coupons on slow sellers, and create removal or liquidation orders before units pass 270 days.

Related free tools

→Amazon FBA calculatorFBA fees and profit per unit.→Amazon size tier calculatorYour FBA size tier and shipping weight.→Amazon reorder point calculatorWhen to reorder and how much.
Updated ·By the Deviantly data team

Sources: SellerSprite: Amazon storage fee calculator (2026 rates) · InventoryHero: FBA storage fees 2026 · Acadia: Amazon US fee changes in 2026 · Seller Labs: Amazon FBA fee changes in 2026