Amazon FBA Fee Calculator
Estimate your net profit on Amazon FBA products by accounting for referral fees, fulfillment costs, and product expenses. Use it before sourcing to vet margin viability.
About this calculator
Selling on Amazon FBA involves several layered fees that together determine your true profit. The formula used here is: Net Profit = Selling Price − Product Cost − Referral Fee − Fulfillment Fee − Storage Fee. The referral fee is a percentage of the selling price that varies by category: Electronics 8%, Clothing 15%, and most other categories 10%. The fulfillment fee covers Amazon's picking, packing, and shipping costs and is estimated here as: Fulfillment Fee = (Weight × $3.25) + (Package Volume × $0.08). A flat $2.50 storage fee is also applied. In practice, Amazon's actual fee schedules are tiered by size classification and weight, but these figures provide a reliable approximation for margin screening. Profit margin % = (Net Profit / Selling Price) × 100.
How to use
You sell a 1 lb electronics gadget with a package volume of 10 cubic inches. Selling price: $30, product cost: $10. Referral fee (Electronics, 8%): $30 × 0.08 = $2.40. Fulfillment fee: (1 × $3.25) + (10 × $0.08) = $3.25 + $0.80 = $4.05. Storage fee: $2.50. Net Profit = $30 − $10 − $2.40 − $4.05 − $2.50 = $11.05. Profit margin = $11.05 / $30 ≈ 36.8%. This healthy margin suggests the product is worth sourcing, though you should validate against Amazon's current published fee schedule before ordering inventory.
Frequently asked questions
How does Amazon calculate FBA fulfillment fees for different product sizes?
Amazon classifies products into size tiers — Small Standard, Large Standard, and Oversize — based on unit weight and dimensions. Each tier carries a base fulfillment fee plus incremental charges for additional weight. The fees in this calculator approximate the standard-size tier using a per-pound and per-cubic-inch model, which works well for initial screening. For precise figures, always cross-check with Amazon's official FBA Revenue Calculator and the current fee schedule published in Seller Central, as Amazon updates rates periodically.
What referral fee percentage does Amazon charge for different product categories?
Amazon's referral fees range from 6% to 45% depending on the category. Common rates include 8% for Consumer Electronics, 10% for most general categories like Home & Kitchen or Sports, and 15% for Clothing & Accessories. Some categories like Amazon Device Accessories charge up to 45%. The referral fee is always calculated on the total selling price including any gift-wrapping charges, and it applies to every sale regardless of whether you use FBA or fulfill orders yourself.
What profit margin should I target when selling products on Amazon FBA?
Most experienced Amazon sellers aim for a minimum net profit margin of 25–30% after all fees to maintain a viable business. Margins below 15% leave little room for advertising spend, which is often essential for product visibility on the platform. Products with margins above 40% are considered highly attractive and can withstand price competition or fee increases. Keep in mind that your effective margin will decrease as you invest in PPC advertising, so factor in an estimated advertising cost of sale (ACoS) of 15–30% when evaluating a new product's true profitability.