How do Amazon fees combine with import duties?

They stack, drastically compressing your margin. If you import a product with a 25% Section 301 tariff (calculated on the FOB price), and sell it on Amazon with a 15% referral fee (calculated on the retail price), almost 40% of the financial value of the transaction goes to tariffs and Amazon commissions before accounting for freight or actual factory costs.

📦 Amazon & eCommerce

Amazon Seller Profit Calculator with China Landed Cost

Use our amazon seller profit calculator to calculate net profit per unit for Amazon sellers importing from China. Integrates China landed cost with Amazon FBA fees and referral fee.

Updated: 2026-04-13

Planning Reference

Inputs Last Reviewed April 2026

Reference Basis

Based on current Amazon FBA fee schedules, published referral rates, and benchmark import cost assumptions.

Planning Note

Amazon fees change periodically. Verify current FBA rates in Seller Central before finalizing your cost model.

Secondary opportunity

amazon seller profit calculator
Medium SERP difficulty

Landed Cost Per Unit USD Your all-in cost per unit including duties, freight, and all fees.

Selling Price Per Unit USD

Quantity units

Platform / Channel Fees % Amazon: 8–17%. eBay: 12–14%. Shopify: 0–3% + payment fees.

Total Profit Tracking for Amazon Sellers

For Amazon Sellers, tracking unit profitability requires synchronizing two completely different supply chains: the physical import chain, governed by HS codes and Ocean freight rates, and the Amazon digital chain, governed by ASIN weight tiers and PPC algorithms.

Combining your accurately calculated China Landed Cost with Amazon's FBA Revenue Calculator yields the only metric that matters: Net Profit Per Unit.

Tips for China Importers

Calculate your total Amazon cost before importing. FBA referral fee + fulfillment fee + storage + PPC + returns typically absorbs 45–55% of your selling price. Build this into your landed cost model before placing an order.
Start with 300–500 units for launch. Launching with 2,000+ units before validating demand is one of the most common (and expensive) mistakes. Test velocity with a smaller shipment first.
Send FBA-ready cartons from China. Prep work (poly-bagging, labeling, bundling) done in China costs $0.05–0.20/unit. Done at an Amazon prep center in the US: $0.50–1.50/unit. Same work, 5–10× the cost.
Account for returns in your margin model. Amazon electronics return rates: 10–20%. Apparel: 20–30%. Toys/general: 5–10%. Factor your category's return rate into your per-unit profit calculation.
Track your IPI score to avoid storage surcharges. Amazon charges long-term storage fees on inventory over 365 days. Keep your Inventory Performance Index (IPI) above 400 to avoid storage limits and surcharges.