Amazon Storage Fee Calculator (Monthly & Long Term)

Amazon Storage Fee Calculator

Estimate monthly and long-term FBA warehouse inventory fees easily.

Total Volume (Cu. Ft.)
0.00
Est. Monthly Storage Fee
$0.00
Fee Per Unit / Month
$0.00
Long-Term Surcharge (181+ days)
$0.00

Amazon Storage Fee Calculator: Estimate Monthly & Long-Term FBA Warehouse Costs

Fulfillment by Amazon (FBA) sellers must carefully monitor warehouse storage costs to protect net profit margins. Amazon charges monthly inventory storage fees based on the daily average volume occupied in fulfillment centers. Our free Amazon Storage Fee Calculator allows sellers to calculate off-peak, Q4 peak season, and aged inventory surcharges instantly.

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How Amazon FBA Inventory Storage Fees Are Calculated

Amazon determines monthly inventory holding fees by calculating your product package dimensions in inches to determine total cubic feet. FBA rates fluctuate significantly based on product size tiers and calendar seasons.

Cubic Feet Calculation Formula

Cubic Feet = (Length × Width × Height in inches) ÷ 1,728

After finding the cubic volume per unit, multiply by total units stored and apply seasonal storage rates.

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Amazon FBA Monthly Storage Rates Reference Table

Season Period Standard-Size Rate (per cu. ft.) Oversize Rate (per cu. ft.) Aged Inventory Surcharge (181+ Days)
Off-Peak (Jan – Sep) $0.87 $0.56 Varies ($0.50 – $6.90 / cu ft)
Q4 Peak (Oct – Dec) $2.40 $1.40 Aged Inventory Surcharge Applies
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Frequently Asked Questions (FAQs)

When does Amazon charge monthly storage fees?

Amazon typically charges monthly storage fees between the 7th and 15th day of the month following the storage period (e.g., January storage fees are charged in mid-February).

What is the Amazon Long-Term Storage Fee (Aged Inventory Surcharge)?

Items stored in an Amazon fulfillment center for longer than 181 days incur an additional monthly Aged Inventory Surcharge on top of normal monthly storage fees.

How can sellers avoid excessive FBA storage fees?

Sellers can avoid high fees by using automated repricing, maintaining optimized sell-through rates, running promotional discounts, or creating removal orders for slow-moving inventory before Q4 peak season.

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