Amazon FBA Fee & Profit Margin Calculator
Calculate Amazon FBA fulfillment fees, category referral fees, storage costs, net profit margin, and unit ROI for e-commerce sellers.
Calculated Results
Frequently Asked Questions
What are the two primary fees charged by Amazon FBA?
1. Referral Fee: Amazon's commission for selling on their marketplace (typically 15% of the total retail price). 2. FBA Fulfillment Fee: A flat per-unit fee based on size and shipping weight that covers picking, packing, shipping, customer service, and product returns.
What is the difference between standard size and oversize on Amazon?
A standard size unit measures 18" × 14" × 8" or less and weighs under 20 pounds. Any item exceeding any of these dimensions is classified as oversize, which incurs significantly higher pick-and-pack fees and lower inventory storage limits.
What is the 'Rule of Thirds' in Amazon FBA?
A classic FBA rule of thumb recommends that your retail sale price should be divided roughly into thirds: 1/3 for manufacturing COGS and inbound shipping, 1/3 for Amazon fees, and 1/3 for net seller profit.
What are Amazon monthly inventory storage fees?
Amazon charges monthly storage fees per cubic foot of warehouse space: $0.87 per cubic foot from January through September, and $2.40 per cubic foot during Q4 peak holiday season (October through December).