Amazon FBA Storage Fees Calculator: Monthly Rates and Long-Term Risk
Storage fees are often overlooked until they appear on the monthly statement. For slow-moving or bulky products they can erase an otherwise healthy margin. This page explains how Amazon calculates monthly and long-term storage fees and how to include them in your profitability analysis.
Use the free Amazon FBA Profit Calculator to allocate a realistic storage cost per unit and see the impact on net profit.
Monthly Storage Fees
Amazon charges based on the average daily volume (cubic feet) your inventory occupies. Rates are higher during the peak season (usually October–December). The exact rate card is published in Seller Central and changes periodically.
Long-Term Storage Fees
Units that remain in fulfillment centers beyond Amazon's age thresholds (commonly 365 days, sometimes shorter) incur additional long-term storage fees. These fees are designed to discourage stagnant inventory and can be substantial.
How to Model Storage in the Profit Calculator
Estimate the expected months a unit will sit in inventory, multiply by the applicable monthly rate per cubic foot, and divide by the number of units. Enter the resulting per-unit storage allocation into the calculator. For products with very high velocity the allocation may be near zero; for slow movers it can be material.
Inventory Management Tips
- Forecast demand carefully and avoid large overstocks.
- Use removal orders or promotions for aged inventory before long-term fees apply.
- Monitor the Inventory Age and Inventory Performance reports in Seller Central.
- Re-evaluate storage impact whenever you consider a bulk purchase.
Storage is only one fee component. See the broader Amazon FBA fees calculator page and the main profit tool for the complete picture.
Cluster Links
- Amazon FBA profit calculator
- Amazon FBA fees calculator
- Amazon FBA fulfillment fee calculator
- Amazon FBA margin calculator
- Amazon FBA break-even calculator
Frequently Asked Questions
How are Amazon FBA storage fees calculated?
Monthly storage fees are charged per cubic foot of inventory. Rates are higher from October to December. Long-term storage fees apply to units that have been in a fulfillment center beyond Amazon's age thresholds.
How can I avoid long-term storage fees?
Maintain healthy inventory velocity, use removal orders for slow movers, and avoid over-ordering relative to expected sales.
Do storage fees affect every product the same way?
No. Large or bulky items occupy more cubic feet and therefore incur higher storage costs. Slow-moving inventory is especially vulnerable to long-term fees.
Should I include storage fees in the profit calculator?
Yes for a realistic view, especially if inventory may sit for more than a few weeks. The Amazon FBA Profit Calculator allows you to allocate a storage cost per unit.
When are peak storage rates charged?
Typically October through December. Plan inventory levels carefully heading into Q4.
Can storage fees turn a profitable product into a loss?
Yes, particularly for slow movers or oversized items that remain in fulfillment centers for many months.
Final Call to Action
Model storage fees inside your profit calculation
Include a realistic storage allocation in every product analysis. Slow inventory is expensive inventory.
Open the free Amazon FBA Profit Calculator