Every shipment from China to the United States in 2026 carries a duty stack that can add 7.5% to over 50% on top of the cargo’s declared value, depending on the HS classification. And for many e-commerce parcels, the de minimis exemption that used to make small parcels duty-free has been eliminated.This guide is a working reference for importers: it walks through how U.S. Customs calculates duty for Chinese-origin goods, what Section 301 means for your category, how to look up your HS code, and what budget cushion to add for the unexpected.
How U.S. Customs Calculates Duty on Chinese Goods
U.S. import duty is calculated as a percentage of the dutiable value of the merchandise. For most consumer goods entering under a normal commercial invoice, dutiable value is the transaction value — the price actually paid for the goods (FOB China port price in most cases), plus any assists and selling commissions. Packing cost is dutiable; international freight is not.
The total duty bill is dutiable value × (MFN duty rate + Section 301 rate + any other applicable surcharge). The applicable tariff is determined by the 10-digit Harmonized Tariff Schedule (HTS) code assigned to the product, which U.S. Customs and Border Protection (CBP) makes final on entry.
If you undervalue or misclassify, CBP can issue a penalty of 2–4x the unpaid duty plus a negligence or fraud penalty (up to the value of the cargo). Working with a licensed customs broker and using binding rulings on unusual products is strongly recommended.
Section 301 Tariffs: The 2026 Stack
Section 301 tariffs on Chinese-origin goods were imposed starting 2018 and have been modified multiple times. As of 2026, the structure is:
<strong>List 1 (originally 25%)</strong>: now 25% on the original list including electronics, machinery, and select automotive parts.
<strong>List 2 (originally 10%, now 25%)</strong>: semiconductors, chemicals, plastics, rail components.
<strong>List 3 (originally 10%, now 25%)</strong>: over $200B of consumer goods including apparel, footwear, toys, furniture, household items.
<strong>List 4A (originally 15%, now 7.5%)</strong>: remaining categories not in Lists 1–3, mostly consumer electronics, smart home devices, certain household appliances.
These Section 301 rates stack on top of the MFN duty rate. So a product with 5% MFN duty in List 3 pays 5% + 25% = 30% duty in 2026. A product with 0% MFN duty in List 4A pays 0% + 7.5% = 7.5% duty.
These tariffs only apply to goods of Chinese origin. If your product is substantially transformed in Vietnam, Malaysia, Thailand, or Mexico, Section 301 no longer applies. CBP requires non-preferential origin rules to be applied — substantial transformation means the article’s name, character, or use differs from what it had in China.
De Minimis Changes: What $800 No Longer Means
Prior to 2025, shipments valued under $800 per consignee per day entered the U.S. duty-free under the de minimis exemption (Section 321). This was widely used by e-commerce sellers shipping direct-to-consumer from China.
Effective June 2025, the de minimis exemption was eliminated for shipments of Chinese-origin textiles, apparel, footwear, personal electronics, and selected consumer goods categories. These now require formal entry, Section 301 duty, and full CBP documentation.
For other categories not on the removed list, de minimis still applies — but its days are limited. U.S. policy is progressively moving toward de minimis elimination for all Chinese-origin cargo through 2027.
For Amazon FBA sellers and DTC brands, this makes DDP shipping economically essential: the forwarder or carrier handles entry, duty, and delivery so the buyer gets one number to budget against.
How to Look Up Your HS / HTS Code
The 10-digit HTS code is the legal determinant of your duty rate. U.S. importers can look up codes three ways:
<strong>WCO Harmonized System</strong>: 6-digit international standard used worldwide. Same prefix for every country.
<strong>HTSUSA (HTSUS)</strong>: 10-digit U.S.-specific extension of the WCO code. Determines U.S. MFN duty rate and Section 301 applicability.
<strong>CBP rulings</u></strong>: binding rulings from CBP Headquarters (filed via eRulings) provide binding classification for unusual products. Free, but takes 30–90 days.
Practical workflow: start with the WCO 6-digit HS, then expand to the 10-digit HTSUS. CBP maintains an online search tool at hts.usitc.gov. For complex products, work with a licensed customs broker who files entries daily and is current on classification changes.
Common HTSUS codes for items imported from China include 9403.60 (wooden furniture), 9405.40 (electric lighting), 8517.62 (telephony devices), 6204.43 (women’s dresses), 6404.11 (footwear with rubber soles), 9503 (toys).
Worked Examples: Three Real-World Calculations
<strong>Example 1 — Patio umbrella, HTSUS 6601.10</strong>: 40HQ from Ningbo to LAX, $45,000 cargo value. MFN duty 6.5%; Section 301 List 3 25%. Total duty: 31.5% × $45,000 = $14,175. Add customs broker $180, ISF $30, destination port $450, ISF penalty risk $0 (BY-LINE files for you).
<strong>Example 2 — Smart watch, HTSUS 8517.62</strong>: 50 cartons via LCL, $18,500 cargo. MFN duty 0%; Section 301 List 4A 7.5%. Total duty: 7.5% × $18,500 = $1,387.50. Add broker $150, examination risk 6% at $300 if exam hits. Most likely total landed: $19,400 all-in after port and handling.
<strong>Example 3 — Cotton t-shirt, HTSUS 6109.10</strong>: $8,200 cargo. MFN duty 16.5%; Section 301 List 3 25%. Total duty: 41.5% × $8,200 = $3,403. Plus de minimis removal — formal entry required. Add broker $150. Total duty $3,553 — a 43% all-in markup that must be priced into retail.
How BY-LINE Manages U.S. Customs Clearance
BY-LINE Freight operates as a U.S. licensed customs broker (CHB license on file) and partners with a network of U.S.-side brokers for entry filing. We handle ISF, entry summary, duty payment, exam coordination, and final-mile delivery as a single contract.
Our Pricing Promise: every DDP quote we issue is line-by-line itemized with MFN duty, Section 301 line items, customs broker fee, and port handling separately stated. We do not bury duty in a freight line. Send us your supplier’s commercial invoice and we will return a complete duty calculation within one business day.
Case Study: $120K Apparel Shipment — Why This Importer Switched from FOB to DDP
In August 2025 a Texas apparel importer shipped a $120K FOB order under HTSUS 6109.10. MFN was 16.5%, Section 301 List 3 added 25% — total 41.5% duty. The cargo arrived at LAX expecting the importer’s broker to pay duty. The broker went on vacation; no payment was wired for 9 days. CBP issued a Notice of Action holding cargo at $185/day demurrage plus a 0.5% negligence penalty.
Total drag: $1,665 demurrage + $600 penalty. The importer called BY-LINE. We re-cleared under a DDP agreement for future shipments, paying duty at intake and adding 4.5% to the freight invoice. With DDP, the same $120K shipment costs $5,400 more — but eliminates demurrage exposure and surprises. The importer now ships DDP-by-default.
Common Mistakes Importers Make
- Using the wrong HS code to lower duty — Misclassification to avoid Section 301 or MFN is the #1 cause of CBP penalties. CBP uses analytical tools that flag underpayments; the resulting 2–4x duty penalty plus interest routinely exceeds 50% of the original duty saved. Always use the correct HTSUS.
- Forgetting that Section 301 stacks on MFN — Some importers assume Section 301 “replaces” MFN. It stacks. A product with 5% MFN in List 3 pays 30%, not 5% and not 25%.
- Not filing ISF on time — ISF 10+2 must be filed at least 24 hours before vessel loading at origin. Late or missing ISF triggers a $5,000 fine per shipment. BY-LINE files ISF automatically for every container shipment — confirm your forwarder does the same.
- Treating “China origin” as obvious when it is not — If your product is partially made in China but substantially transformed in Vietnam (final assembly, new HS code, name/character/use change), Section 301 no longer applies. Many importers miss this opportunity — ask your broker for a substantial transformation review if your factory is in multiple countries.
Frequently Asked Questions
There is no “average” — it varies by HTSUS code and Section 301 list. Light consumer electronics in List 4A pay 7.5%. Apparel, footwear, toys, and furniture in List 3 pay 25–41.5%. Smartphones and most semiconductors in List 2 pay 25–27%. Section 301 also adds 25% to a long list of machinery.
Yes — change the country of origin to a non-Section-301 country by substantially transforming the goods there. Vietnam, Malaysia, Thailand, Mexico, Cambodia, and Indonesia are common alternatives. The transformation must be substantive (assembly that changes the HS code) per CBP substantial transformation rules. Transshipping through a non-China country without transformation does not change origin.
Effective mid-2025, de minimis ($800/day per consignee) is eliminated for textile, apparel, footwear, and personal electronics from China. Other categories still enjoy de minimis. For a $200 parcel of, say, a Bluetooth speaker (List 4A, 7.5% duty), the duty would be $15. For a $200 parcel of cotton apparel (List 3, 41.5%), the duty would be $83 — a 41.5% effective rate.
Cargo arriving by ocean: typically 1–3 business days for release if documents are clean, longer if CBP exam is required. LCL cargo is examined at higher rates than FCL. Air cargo: same day release if entry is filed before arrival. BY-LINE files entry 48 hours before vessel ETA to minimize dwell time.
You can self-clear as the importer of record without a broker IF you have a CBP bond, an importer number, and the operational capability to file entry yourself. Most importers use a broker because the fee ($100–$300 per entry) is dwarfed by the risk of incorrect filing. BY-LINE includes broker service in every DDP quote and offers broker-only service for FOB buyers.