Amazon FBA Storage Fees 2026: Monthly & Long-Term Costs Guide
Storage fees are the FBA cost that sneaks up on sellers. Unlike referral or fulfillment fees that hit per-order, storage accumulates monthly — and the day your inventory ages past 181 days, the surcharge can wipe out the profit from your slow movers entirely.
2026 Monthly Storage Rates
| Period | Standard-size | Oversize |
|---|---|---|
| January - September | $0.78/cu ft | $0.56/cu ft |
| October - December (Q4) | $2.40/cu ft | $1.40/cu ft |
Q4 rates are roughly 3× higher than the rest of the year. A product that costs $0.20/unit in off-peak storage can jump to $0.60+ in Q4. Sellers who over-ship for Q4 often find their storage bill exceeding their Q4 advertising budget.
Source: Amazon Seller Central — FBA Storage Fees
Aged Inventory Surcharge
| Age | Surcharge Rate |
|---|---|
| 181 - 365 days | $1.50/cu ft (added to monthly storage) |
| 365+ days | $6.90/cu ft or $0.15/unit (whichever is greater) |
This is the fee that turns a break-even product into a loss. A case of 24 units sitting in Amazon's warehouse for 200 days incurs the monthly storage fee plus the $1.50/cu ft surcharge. By day 365, the surcharge jumps to $6.90/cu ft — more than the base storage fee itself.
Amazon sends automated warnings at 90 and 180 days. If you receive a 180-day notice and your margin on that product is under 20%, running a liquidation sale is usually cheaper than paying another 6 months of surcharge.
Real Cost Example
| Item | Amount |
|---|---|
| Product: standard-size, 0.15 cu ft | |
| Monthly storage (off-peak, 3 months) | $0.78 × 0.15 × 3 = $0.35 |
| Monthly storage (Q4, 1 month) | $2.40 × 0.15 = $0.36 |
| Aged surcharge (181-365d, 2 months) | $1.50 × 0.15 × 2 = $0.45 |
| Total storage cost per unit | $1.16 |
| If sold quickly (60 days, off-peak) | $0.24 |
The same product costs 5× more in storage if it sits for 6 months instead of 2. This is why inventory velocity is the most overlooked variable in FBA profitability.
How to Minimize Storage Fees
- Ship for 30-60 days of sales, not 90+. Amazon penalizes slow inventory, not frequent restocking. Multiple small shipments cost more in inbound shipping but save significantly in storage fees.
- Use the Inventory Age tool in Seller Central monthly. Products approaching 90 and 180 days need a decision: promote, discount, or liquidate.
- Seasonal products ship later than you think. Sending Q4 inventory in August means paying 3 months of off-peak storage before the Q4 rush. Send in October instead.
- Use the FBA Calculator to model storage costs before sourcing a product. A slow-moving item with a 20% margin on paper may be unprofitable after 6 months of storage.
What are the current Amazon FBA storage fees in 2026?
Standard-size: $0.78/cu ft (Jan-Sep), $2.40/cu ft (Oct-Dec). Oversize: $0.56/cu ft (Jan-Sep), $1.40/cu ft (Oct-Dec). Aged inventory surcharge: $1.50/cu ft (181-365d), $6.90/cu ft (365+d).
How do I calculate FBA storage fees for my product?
Multiply your product's cubic footage by the current monthly rate. Add the aged surcharge if applicable. Use the FBA Calculator at fbatools.zh.kg to model storage costs for any product size.
Model your storage costs before you source.
Open FBA Calculator →