FBA Monthly Storage Fees for 2026: Off-Peak, Peak Season, and Aged Inventory Rates Explained
Amazon’s 2026 FBA storage schedule bills $0.87 per cubic foot for off‑peak months (Jan‑Sep) and $2.40 per cubic foot for peak months (Oct‑Dec). A $0.15 per cubic foot surcharge applies after 365 days, and a volume discount drops the off‑peak rate to $0.55 per cubic foot once total storage exceeds 250 cu ft.
Overview
Amazon’s 2026 Fulfilled‑by‑Amazon (FBA) storage fee schedule continues to split rates between off‑peak months (January – September) and peak months (October – December). Off‑peak inventory costs $0.87 per cubic foot, while the holiday window jumps to $2.40 per cubic foot. An additional $0.15 per cubic foot surcharge applies to any stock that stays in a fulfillment center for more than 365 days. Sellers who misjudge these fees risk eroding margins, especially during the critical Q4 selling period.
Key Points
- Off‑peak base rate — $0.87 per cubic foot for inventory under 250 cu ft, unchanged from 2025.
- Off‑peak volume discount — Storage drops to $0.55 per cubic foot once a seller’s total exceeds 250 cu ft, a roughly 37 % reduction.
- Peak‑season premium — From October through December the rate rises to $2.40 per cubic foot, a 176 % increase over the off‑peak price.
- Long‑term surcharge — Stock older than 365 days incurs an extra $0.15 per cubic foot each month, on top of the regular seasonal rate.
- Daily accrual, no grace period — Fees start the day inventory is checked in; there is no free‑of‑charge window.
- Volume‑based calculation — Amazon multiplies total cubic footage by the applicable seasonal rate to generate the monthly bill.
How Amazon Calculates Storage Fees
- Determine unit volume — Multiply a product’s length, width, and height in inches, then divide the result by 1,728 to convert to cubic feet.
Example: A 12 × 8 × 6‑inch item yields (12 × 8 × 6) ÷ 1,728 = 0.33 cu ft. - Aggregate total cubic footage — Sum the cubic‑foot values for every SKU stored at a fulfillment center on a given day.
Example: Ten units of the 0.33 cu ft item equal 3.3 cu ft of total volume. - Apply the seasonal rate — Multiply the aggregated volume by the off‑peak or peak‑season rate, depending on the calendar month.
Example: 3.3 cu ft in September costs 3.3 × $0.87 = $2.87; the same volume in November costs 3.3 × $2.40 = $7.92.
Analysis & Recommendations
Why This Matters
Peak‑season fees are more than double the off‑peak rate, turning a $5‑margin product with 0.2 cu ft volume into a $0.48 profit after storage. The $0.15/ft³ long‑term surcharge adds $22.50 each month for 150 cu ft of 340‑day‑old stock, and missing the 250 cu ft discount costs sellers $83 per month in off‑peak periods.
Key Takeaways
- Off‑peak base rate is $0.87/ft³; peak‑season rate jumps to $2.40/ft³ (Oct‑Dec).
- A $0.15/ft³ surcharge applies each month to inventory stored over 365 days.
- Volume discount activates at >250 cu ft off‑peak, reducing the rate to $0.55/ft³.
- Fees accrue daily with no grace period; mis‑timing Q4 inventory can erode margins.
Recommended Actions
- →In Seller Central, run the Inventory Age report weekly and remove any SKU approaching 365 days to avoid the $0.15/ft³ surcharge.
- →Monitor total off‑peak volume in the Storage Utilization tab; if under 250 cu ft, consolidate shipments to push volume above the threshold and secu...
- →Before restocking for Q4, use the FBA fee calculator (Seller Central > Fees > FBA) to model costs at $0.87 and $2.40 per ft³ and only add SKUs that...
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