Net Profit Per Unit
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See exactly how MFN, Section 122, Section 301, and Section 232 apply to your product.
Full Tariff Calculator →Estimates for planning purposes only. Tariff rates are averages for product categories — actual rates depend on specific HTS codes. Amazon fees vary by category and product dimensions. Always verify with your customs broker and Amazon Seller Central.
Why Tariffs Matter for Your FBA Margins
Most FBA profit calculators ignore import duties entirely. That's a massive blind spot in 2026, when effective tariff rates on Chinese goods range from 25% to over 70%. A product that looks profitable on paper can be a money loser once tariffs are factored in.
This calculator is different — it automatically applies the correct tariff layers based on your sourcing country and product category, including the 15% Section 122 surcharge (expiring July 24, 2026), Section 301 tariffs on Chinese goods, and MFN base duties.
For the full tariff breakdown with all four layers explained, use our US Import Tariff Calculator. For strategies to lower your duty costs, read our guide on 7 ways to legally reduce import tariffs.
Why Most FBA Profit Calculations Are Wrong in 2026
I've reviewed dozens of Amazon FBA profit calculators, and almost none of them include import tariffs. That was fine before 2018 when tariffs on most consumer goods were 0-5%. But in 2026, with effective rates of 25-60% on Chinese goods, ignoring tariffs is like ignoring your cost of goods — it makes your entire profit calculation meaningless.
Here's a real scenario I encountered: A seller found a kitchen gadget on Alibaba for $4.50, shipping $1.50, selling on Amazon for $24.99. Using a standard FBA calculator without tariffs, the margin looked like 45%. After factoring in 44% tariffs on the $6.00 customs value ($2.64 in duties), the real margin dropped to 34%. That's the difference between a product you'd aggressively invest in PPC for and one where you'd be cautious.
This calculator was built specifically to solve that problem. It's the only free FBA margin tool I know of that automatically applies the correct 2026 tariff rates based on your sourcing country and product category.
Understanding the FBA Cost Stack
Your actual cost per unit as an FBA seller includes layers that many beginners underestimate. The product cost (FOB price from your supplier) is just the starting point. Add shipping to US ($1-5/unit for sea freight), tariffs (25-60% of customs value from China), Amazon's referral fee (typically 15% of selling price), FBA fulfillment fee ($3-8 depending on size and weight), and PPC advertising (typically 15-25% of revenue for new products).
When you stack all of these, a product that looks profitable at the FOB price level may only yield a 10-15% net margin — and that's before returns, storage fees, and the inevitable price competition from other sellers.
The Sourcing Country Decision
One of the most impactful decisions you can make as an FBA seller in 2026 is where you source from. The tariff gap between China and alternatives like Vietnam, India, or Mexico (USMCA) can be the difference between a profitable product and a money loser. Use our Country Comparison Calculator to model different scenarios before committing to a supplier.