Thuế nhập khẩu của Mỹ được tính như thế nào khi vận chuyển hàng hóa từ Trung Quốc đến kho FBA của Amazon?

If you’re an Amazon seller importing from China, understanding U.S. import duties isn’t optional—it’s essential. Misjudging duty rates or DDP shipping costs can destroy your margins. In this guide, I’ll show you step-by-step how import taxes work, how to estimate them, and what hidden fees to avoid.

According to U.S. Customs and Border Protection (CBP), import duties for goods shipped from China to Amazon FBA warehouses are calculated using three key factors: the product’s HS Code classification, declared customs value (CIF), and country of origin. Duties vary based on tariff schedules, including Section 301 China tariffs. To calculate, sellers multiply their item’s dutiable value by the applicable tariff rate, plus any handling and processing fees. Customs brokers or online duty calculators can provide exact estimates before shipping.

Now that you know the formula, let’s break down what each factor means in practice—and how you can estimate your exact landed costs before sending products to Amazon FBA.

1. How do I calculate customs duties when importing from China to the U.S.?

Every product entering the U.S. must have a Harmonized System (HS) Code—a 10-digit classification number determining its import duty rate.

Formula for U.S. Import Duty Calculation:

Import Duty = (Declared Customs Value × Tariff Rate) + Processing Fees

Ví dụ:

• Product: Stainless steel water bottles
• Declared customs value (CIF): $5,000
• HS Code duty rate: 10%
• Merchandise Processing Fee (MPF): 0.3464% ($17.32)
• Harbor Maintenance Fee (HMF): 0.125% ($6.25)

Total duty = $5,000 × 10% + $17.32 + $6.25 = $523.57

So, if you ship $5,000 worth of bottles, expect to pay roughly $523.57 in total import duties and fees.

2. What factors determine my US import duty rates from China?

U.S. import duty rates depend primarily on:

1. HS Code classification – Each product type carries a different rate.
2. Product material and use – Plastic vs. metal vs. textile can alter rates.
3. Quốc gia xuất xứ – “Made in China” items may include Biểu phí theo Mục 301, adding 7.5%–25%.
4. Declared value – Higher declared customs value = higher duties.
5. Trade programs or exemptions – Some goods qualify for tariff exclusions.

Ví dụ:

• A wooden toy (HS Code 9503.00.00) may have 0% base duty.
• A steel part (HS Code 7326.90.86) may face 25% due to Section 301 tariffs.

Always check your specific HS Code using the CBP duty calculator or consult a customs broker for confirmation.

3. How can I estimate my total DDP shipping costs from China to Amazon FBA?

DDP (Giao hàng đã thanh toán thuế) shipping means your supplier or freight forwarder handles all costs—freight, customs clearance, and duties—until your goods reach the FBA warehouse.

Example of Total Landed Cost Calculation:

This means your final landed cost per item is your total divided by the number of units shipped. Always confirm your DDP quote covers all of these items.

4. Does my DDP shipping quote include all taxes and customs fees?

Not always. Some DDP quotes include only partial duties or exclude hidden fees like port surcharges or warehouse handling.

Shipping Terms Explained:

• DDP (Giao hàng đã thanh toán thuế) – Seller pays all duties, taxes, and delivery costs.
• DAP (Delivered At Place) – Buyer pays customs clearance and import fees.
• EXW (Giao hàng tại xưởng) – Buyer pays everything from the factory onward.

If your supplier says “DDP to Amazon,” ask for a written breakdown. Unscrupulous forwarders sometimes label shipments “DDP” but later request extra payment when customs re-assesses values.

5. How does Amazon FBA affect customs clearance and import tax obligations?

When shipping to Amazon FBA, you are the importer of record, not Amazon. This means:

• You must provide accurate invoices and HS codes.
• Customs duties and taxes are your responsibility.
• Your freight forwarder clears goods under your business name.

Unlike personal shipments, FBA imports require an EIN (Employer Identification Number), commercial invoices, and sometimes FDA or FCC compliance (for electronics or food).

If you use a người môi giới hải quan, they’ll handle documentation and ensure duties are paid correctly.

6. What documents do I need to provide for accurate duty calculation?

You’ll need the following:

• Hóa đơn thương mại: Product name, quantity, and value.
• Danh sách đồ cần mang theo: Itemized shipment details.
• Bill of Lading or Air Waybill: Proof of shipment.
• HS Code: For tariff classification.
• Country of Origin Certificate: Proof of where goods were made.
• Import Bond: Required for entries over $2,500.

Submitting accurate documents prevents customs delays and fines.

7. Can I get a pre-shipment duty estimation for my China-US FBA shipments?

Yes. You can estimate import duties before shipping using:

• U.S. CBP’s duty calculator
• Forwarder tools like Freightos or Flexport.
• Customs brokers, who can quote exact tariffs based on HS Codes.

Ví dụ:
If your $10,000 shipment falls under a 12% duty rate and 25% Section 301 tariff:

• Base duty = $10,000 × 12% = $1,200
• Section 301 tariff = $10,000 × 25% = $2,500
• Total estimated duties = $3,700

This advance estimate prevents unwanted surprises at customs.

8. How do I know if my products qualify for Section 301 tariff exemptions?

Section 301 tariffs affect thousands of Chinese products. Some items qualify for temporary exemptions.

Check whether your HS Code qualifies using the USTR Exclusion Search Portal or through your customs broker.

Ví dụ:

• HS Code 8509.80.50 (certain vacuum cleaners) → 25% tariff.
• HS Code 8509.80.75 (battery-powered versions) → possibly exempt.

Always verify exemption status before shipping—filing post-entry refunds can take months.

9. Are there hidden fees I should watch out for in China-US DDP shipping?

Yes. Even with DDP terms, you may face:

• Port storage fees (if clearance takes too long)
• Phí kiểm tra (random checks)
• Amazon appointment delays (late delivery penalties)
• Re-labeling or re-boxing fees at destination warehouses
• Currency conversion charges on duty payments

Always confirm if these are covered in your quote. A trustworthy DDP partner itemizes every fee.

10. What happens if customs charges exceed my logistics provider’s estimated duties?

If customs re-assesses your shipment, duties may increase unexpectedly. Here’s what to do:

1. Request a post-entry correction via your broker.
2. Pay the difference to release held goods.
3. Negotiate with your supplier if under-declared values caused issues.
4. Appeal via CBP Form 19 if the reassessment seems wrong.

Keep all invoices and broker correspondence—transparency resolves disputes faster.

Example: Full Import Cost Calculation Summary

Duty Calculation:

• Base duty: $3,000 × 4.9% = $147
• Section 301 tariff: $3,000 × 25% = $750
• MPF + HMF = $16.17

✅ Total Duties and Fees: $913.17
If shipping cost is $400, landed cost = $3,000 + $400 + $913.17 = $4,313.17

Knowing this number before importing helps price your products correctly on Amazon.

Bản tóm tắt

Understanding how U.S. import duties are calculated protects your Amazon business from hidden costs. Always confirm HS Codes, ask for a full DDP cost breakdown, and use duty calculators before committing to a shipment. Doing so ensures compliance, avoids customs delays, and keeps your FBA profits safe.