How much of your margin will tariffs eat before you sell a single unit? If you're sourcing from China, the answer is typically 37.5–57% of your customs value. Most product research tools don't show you that number. This guide does.
Find a product → Check demand (BSR, reviews) → Get supplier quote → Calculate margin → Order
Find a product → Check tariff rate by country → Get quotes from 2-3 countries → Calculate margin with tariffs → Compare landed costs → Order from lowest-cost origin
Adding the tariff check before you contact suppliers saves you from wasting time negotiating with Chinese suppliers on products where the tariff math doesn't work.
Some product categories have become nearly impossible to profit from when sourcing from China due to tariff stacking:
🚫 High-Risk Categories (China Sourcing)
In brief
Clothing & Apparel: 58%+ total tariff rate. A $5 garment costs $7.90+ after duties.
Footwear: 55%+ total tariff rate. Similar math — very thin margins.
Steel/Aluminum products: 78%+ total tariff rate. Nearly impossible.
✅ Better Options
Electronics from Vietnam: 17.5% total rate vs. 42.5% from China
Home goods from Mexico (USMCA): 4% total rate vs. 44% from China
Beauty products from India: 19% total rate vs. 44% from China
Step 1: Use our Tariff Calculator to check the rate for your product category from China.
Step 2: Use the Comparison Calculator to check rates from Vietnam, India, and Mexico.
Step 3: Use the FBA Profit Calculator to see your real margin with tariffs from each country.
Step 4: Only then contact suppliers and request quotes.
This 10-minute process can save you thousands of dollars in wasted inventory and unexpected duty bills.
Check Tariffs Before You Source
FBA Profit Calculator →Not necessarily. If your product has healthy margins even after 40-60% tariffs, China can still work. But always compare costs from alternative countries first.
There's no single cutoff — it depends on your selling price and product cost. Generally, if tariffs push your total COGS above 60% of your selling price, margins become dangerously thin.
After analyzing hundreds of FBA seller cost structures, the same tariff mistakes come up over and over. Each one quietly drains profit — and most sellers don't realize it until they wonder why their bank account doesn't match their spreadsheet.
A seller finds a product with 50% margins based on FOB pricing, orders 2,000 units from China, and then discovers the 42% tariff rate reduces their margin to 15%. At that point, they're stuck with inventory they can barely profit from.
Fix: Always calculate margins with tariffs included before placing orders. Use our FBA Profit Calculator to see real margins instantly.
Your HTS code determines your MFN duty rate. Two similar products can have rates that differ by 10-20%. Many sellers use whatever code their freight forwarder assigns without checking if a lower-rate classification is legitimate.
Fix: Hire a customs broker to review your classification. A one-time consultation ($200-500) can save thousands per year.
Products covered by Section 232 (steel, aluminum, autos, semiconductors) are exempt from the 10% Section 122 surcharge. If your broker doesn't flag this, you could be overpaying 10% on every shipment.
Fix: Check if your product falls under Section 232. Verify your entry summary does not include Section 122 duties on these products.
If you source from Mexico or Canada and your product qualifies under USMCA rules of origin, you're exempt from the 10% Section 122 surcharge. Many sellers don't realize their products qualify, or don't file proper USMCA claims.
Fix: Ask your supplier for a USMCA certificate of origin. Work with your customs broker to file USMCA preferential claims.
If you paid IEEPA "reciprocal" tariffs between April 2025 and February 2026, you may be entitled to a full refund. Billions of dollars in refunds are available, but many sellers don't know they can claim them.
Fix: Contact your customs broker about filing through the CAPE system. Read our IEEPA refund guide for step-by-step instructions.
💰 The In short:
Fixing just one of these mistakes could save you $2,000-10,000+ per year depending on your import volume. All five together could transform an unprofitable product line into a healthy one.