Amazon FBA Q4 Storage Fees vs Q1-Q3

Amazon charges drastically higher storage fees during Q4 (October, November, December). In 2024, standard-size storage was $0.78 per cubic foot per month from January–September, but jumped to $2.40 per cubic foot in Q4 — over 3× more expensive. If you have slow-moving inventory sitting in Amazon's warehouse during the holidays, the storage fees can quickly eat your margins.

How do I avoid Amazon Aged Inventory (long-term storage) fees?

Amazon charges an Aged Inventory Surcharge for units stored more than 181 days ($3.80/cu ft from 181–270 days) and more than 365 days ($6.90/cu ft). To avoid these: run clearance promotions before the 180-day mark, use the FBA inventory removal service to pull slow movers back to your warehouse, or create coupons to accelerate sell-through.

How does Amazon measure cubic feet for storage fees?

Amazon measures the unit dimensions (including packaging) and calculates the cubic volume. Storage fees are billed per cubic foot per month based on the daily average inventory volume stored. The fee is charged monthly.

What's the difference between FBA storage fees and the FBA fulfillment fee?

Storage fees are ongoing charges for keeping unsold inventory in Amazon's warehouse. Fulfillment fees are per-unit fees charged when Amazon picks, packs, and ships your product to a customer. Both reduce your margin — you need to account for both in your pricing.

Amazon FBA Storage Fee Calculator

Calculate Amazon FBA monthly storage fees for your inventory. See how Q4 rates (Oct–Dec) are 3× higher than Q1–Q3, and estimate aged inventory surcharges.

Type

Cubic Feet of Inventory

Enter a bid/price to see the fee breakdown.

Frequently asked questions

Amazon FBA Monthly Storage Fee Calculator — Q4 vs Q1-Q3 Comparison

Amazon FBA storage fees are one of the sneakiest profit killers for private label sellers. During Q1–Q3, standard-size storage costs $0.78 per cubic foot per month — manageable. But in Q4, that rate triples to $2.40 per cubic foot. If you over-stock Amazon warehouses for the holiday season and don't sell through, you'll pay premium rates on dead inventory right when your cash flow matters most. Enter your cubic feet to see exactly what you'll owe.

Q4 vs Q1-Q3 toggle

Switch between the $0.78/cu ft (Jan–Sep) and $2.40/cu ft (Oct–Dec) rates to plan inventory levels around the seasonal pricing cliff.

Aged inventory warning

The calculator flags the $6.90/cu ft aged inventory surcharge that applies to inventory sitting over 365 days — a common margin killer for sellers with slow movers.

Plan your send-in quantities

Use this to decide how much inventory to send to FBA vs keep in your own warehouse for Q4 fulfillment.

Smart FBA sellers monitor storage fees monthly and pull slow-moving SKUs before they hit 181-day aged inventory thresholds. Use this calculator during your monthly inventory review to spot expensive SKUs before fees compound.

Fee rates verified and updated April 2026. Rates may change — verify directly with the platform before transacting.