What is Amazon FBA fee?

Amazon FBA (Fulfillment by Amazon) fees include fulfillment fees (picking, packing, shipping), monthly storage fees, and referral fees (a percentage of the sale price, typically 8-15% depending on category).

How is FBA size tier determined?

Amazon determines size tier based on the larger of unit weight or dimensional weight (length x width x height / 139 for standard, / 166 for oversized). Tiers include Small Standard, Large Standard, Small Oversize, Medium Oversize, Large Oversize, and Special Oversize.

Does this calculator include referral fees?

Yes, our FBA calculator includes referral fees by category, fulfillment fees by size tier, and monthly storage fees (seasonal rates apply: Jan-Sep vs Oct-Dec).

Amazon FBA Fee Calculator

Calculate your Amazon FBA fees including fulfillment fees, storage fees, referral fees, and total net profit. Supports US marketplace with 2025 fee rates.

Product Dimensions

Measurement Unit

Length

Width

Height

Unit Weight (kg)

Product Category

Storage Season

Selling Price ($)

Product Cost ($)

Apparel (17% referral)Media (closing fee)

Enter product dimensions, weight, and price to calculate FBA fees and profit.

Data Source: Amazon Official FBA Rate Card (2025). Last updated: January 2025. Fee rates may change — always verify with Amazon Seller Central before making pricing decisions.

Frequently Asked Questions

How are Amazon FBA fees calculated?

FBA fees include: (1) Fulfillment fee based on Size Tier (determined by dimensions and weight), (2) Referral fee (8-20% of selling price depending on category), (3) Monthly storage fees (varies by season), (4) Optional long-term storage fees for inventory over 181 days.

What is a Size Tier?

Amazon categorizes products into Size Tiers based on dimensions and unit weight. Tiers include: Small Standard (≤15oz, ≤15×12×0.75in), Large Standard (≤20oz, ≤18×14×8in), Small Oversize (≤70oz), Medium Oversize (≤150oz), Large Oversize (≤150oz). Each tier has different fulfillment fees.

Does this calculator include long-term storage fees?

This calculator estimates standard fulfillment, referral, and monthly storage fees. Long-term storage fees (for inventory stored 181+ days) are not included in the base calculation. Amazon charges $6.90/cubic ft for items stored over 181 days.

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