Calculate your true Amazon FBA profit after all fees including FBA fulfillment fees, referral fees, and product cost to see your real margin per unit.
Practical example: Supplement, $29.99, 0.5 lb, 200 units/month. For a small consumable product scenario, enter the values that match your situation to get an instant cost estimate.
How are Amazon FBA fees calculated? Amazon FBA fees have two main components: (1) Fulfillment fee: charged per unit based on size and weight ($3.22 for small standard, $5.42 for large standard, $9.73+ for oversized), (2) Referral fee: 15% of the total selling price for most categories (varies 6–45% by category). Additional fees: monthly storage ($0.87/cubic ft Jan–Sep, $2.40 Oct–Dec), long-term storage for items over 365 days.
Formula: Profit/unit = sellingPrice − productCost − referralFee(15%) − fbaFee. Margin % = profitPerUnit / sellingPrice × 100
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