Amazon FBA Profit & Fee Calculator
Calculate your true Amazon FBA profit per unit after referral fees, FBA fulfillment fees, and monthly storage fees. See your margin, ROI, and monthly profit.
Amazon FBA Profit Formula
Amazon FBA sellers pay three core fees on every sale: a referral fee (a percentage of the sale price that varies by category, with a $0.30 minimum), an FBA fulfillment fee (based on the product's size tier and weight), and a monthly storage fee (based on how much warehouse space your inventory occupies). Your net profit per unit is what remains after subtracting your product cost, inbound shipping, and all three Amazon fees.
Fulfillment fees are estimated using representative 2026 size-tier base rates (Small Standard, Large Standard, Large Bulky) plus a per-ounce rate for weight above each tier's base allowance. Actual fees depend on exact dimensions, weight, and Amazon's published rate card, which is updated periodically and includes seasonal surcharges.
How to Use the Amazon FBA Profit Calculator
Enter your selling price and product cost
Selling price is what the customer pays on the Amazon listing. Product cost is your landed unit cost from your supplier.
Enter your inbound shipping cost per unit
This is the cost to ship your inventory from your supplier or warehouse into an Amazon fulfillment center, divided by the number of units in the shipment.
Select your product category
This sets the referral fee percentage Amazon charges — most categories are 15%, but Electronics is 8%, Clothing is 17%, and Jewelry is 20%.
Choose a size tier and enter item weight
Small Standard covers small lightweight items, Large Standard covers most boxed products up to 20 lb, and Large Bulky covers oversized items.
Enter your monthly storage fee per unit and units sold per month
Use Amazon's published storage rate (around $0.78/cubic ft in Jan–Sep, $2.40/cubic ft in Oct–Dec) multiplied by your product's cubic footage, or enter your actual fee from Seller Central.
Click Calculate
View your per-unit fee breakdown, net profit, profit margin, ROI, and projected monthly profit.
Real-World Scenario Example
"A seller sources a kitchen gadget for $8.00, pays $0.50 to ship it to Amazon, and sells it for $24.99 in the Home & Kitchen category (15% referral fee) as a Small Standard item weighing 10 oz, with a $0.40/month storage fee, selling 150 units per month."
Inputs
Result
Referral fee ≈ $3.75, fulfillment fee ≈ $3.64, storage fee $0.40. Total fees ≈ $7.79. Net profit per unit ≈ $8.70 (about 35% margin), and monthly net profit ≈ $1,305 at 150 units sold.
Important Disclaimer
All figures are estimates for educational purposes based on publicly reported Amazon FBA fee structures, which change periodically and vary by exact product dimensions, weight, and category. Always confirm your actual fees in Amazon Seller Central before pricing your products.
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