Section 301 Tariffs: What China Tariffs Mean for E-Commerce Sellers in 2026

If you source products from China and sell in the United States, Section 301 tariffs are likely your single biggest landed cost variable. Since 2018, the US has imposed additional tariffs on hundreds of billions of dollars of Chinese imports — layered on top of standard MFN (Most Favoured Nation) duty rates.

This guide explains what Section 301 is, which products are affected, how to check your specific HS code, and what options exist to legally reduce your exposure.

What is Section 301?

Section 301 of the Trade Act of 1974 gives the US Trade Representative (USTR) authority to investigate and respond to foreign trade practices deemed "unfair" or "unreasonable." The current tariffs stem from a 2017 investigation into China's practices around intellectual property, technology transfer, and innovation.

Starting in July 2018, the USTR imposed additional tariffs on Chinese goods in four tranches, commonly called List 1, List 2, List 3, and List 4A. Each list targets different product categories and carries different additional duty rates.

These tariffs are additional — they stack on top of the existing MFN duty rate. If a product normally carries a 3% MFN duty and is on List 3 (25% additional), the total effective rate is 28%.

The four tariff lists

List 1 — $34 billion (25% additional) Implemented July 6, 2018. Targeted industrial goods, aerospace components, machinery, and some medical devices. This list was specifically designed to target Chinese industrial policy, not consumer goods.

List 2 — $16 billion (25% additional) Implemented August 23, 2018. Extended to semiconductors, chemicals, rail equipment, and electronic components. Also focused on industrial and intermediate goods.

List 3 — $200 billion (25% additional) Implemented September 2018, rate raised to 25% in May 2019. The largest list — covers a broad range of consumer and industrial goods including electronics, furniture, textiles, and food products. This is where most e-commerce sellers encounter Section 301.

List 4A — $120 billion (7.5% additional) Implemented September 1, 2019, rate reduced to 7.5% as part of the Phase One trade deal in January 2020. Covers consumer electronics, clothing, shoes, and other consumer goods. List 4B (the remainder of the original "List 4") was suspended and never implemented.

Biden and Trump: tariffs stayed and grew

When the Biden administration took office in 2021, many expected Section 301 tariffs to be rolled back. Instead, the administration kept all existing tariffs and in 2024 increased rates on specific strategic sectors:

- Electric vehicles: raised to 100% - Solar cells: raised to 50% - Lithium batteries: raised to 25% (scheduled to rise further) - Ship-to-shore cranes: 25% - Medical gloves and syringes: 25-50% - Steel and aluminium: raised to 25%

These sector-specific increases reflected geopolitical concerns about strategic industries rather than broad trade rebalancing.

Under the Trump administration's second term (from January 2025), additional tariffs were imposed under the International Emergency Economic Powers Act (IEEPA), further increasing effective rates on Chinese goods. The tariff environment in 2026 is more complex than at any prior point — check the USTR website and your freight forwarder for current rates on your specific HS code, as rates have continued to change.

How to check if your product is affected

Section 301 tariffs are applied at the 8-digit HTS code level. To check your product:

Step 1: Identify your HTS code You need the full 10-digit US HTS code, not just the 6-digit HS code. Use the USITC Tariff Schedule search at hts.usitc.gov.

Step 2: Check the exclusion lists The USTR has granted thousands of product-specific exclusions since 2018. An exclusion temporarily removes a product from Section 301 tariffs. Search the USTR Section 301 docket for your HTS code.

Step 3: Check the current rate The total duty rate = MFN rate + applicable Section 301 additional duty. Your customs broker or freight forwarder can provide the current combined rate for your specific product.

Step 4: Verify country of origin Section 301 tariffs apply to goods of Chinese origin. If goods are substantially transformed in a third country (Vietnam, Mexico, etc.) before export to the US, they may not be subject to Section 301 — but this requires genuine manufacturing activity, not just relabelling (which CBP actively investigates).

Which common e-commerce products are hardest hit

Here are common e-commerce product categories and their Section 301 exposure. Note: always verify against the current USTR tariff schedule as rates can change.

Section 301 exclusions: what they are and how to get them

The USTR has run multiple rounds of exclusion processes, allowing importers to apply for relief from Section 301 tariffs for specific products. Exclusions are granted when:

- The product is not available from a non-Chinese source - The tariff causes severe economic harm to the US importer - Granting the exclusion would not undermine the objectives of the Section 301 investigation

Exclusions are product-specific (tied to an HTS code and sometimes additional product characteristics) and time-limited (typically 12-18 months). They can be renewed.

How to apply: The USTR posts exclusion request windows on ustr.gov. Applications require detailed product descriptions, import data, and evidence of economic harm or sourcing limitations.

Current status: The exclusion process has been intermittent. Check ustr.gov for active exclusion request windows and whether your product category is currently eligible.

Legal strategies to reduce Section 301 exposure

1. First sale valuation US customs allows importers to use the "first sale" price (the price paid by the middleman to the manufacturer) rather than the final invoice price for customs valuation. This can reduce the taxable value if you buy through a trading company.

2. Country of origin analysis If goods undergo "substantial transformation" in a third country, they may qualify as originating in that country — not China. The bar is high: genuine manufacturing activity is required, not just packaging, kitting, or minor processing. Vietnam and Mexico are common alternatives, but CBP scrutinises these claims heavily.

3. Tariff engineering Legally modifying a product to change its classification to a non-affected HTS code. This must be done through genuine product changes, not reclassification of the same product.

4. Bonded warehouses and Foreign Trade Zones (FTZs) Goods stored in FTZs are not subject to import duties until they enter US commerce. FTZs can defer or reduce duty liability in some cases.

5. De minimis — Section 321 Shipments valued under $800 can enter the US duty-free under the Section 321 de minimis exemption. Note: proposed legislation has sought to restrict de minimis for Chinese-origin goods, and the rules may change. Check current CBP guidance.

Important: All of these strategies require proper legal and customs compliance. Misclassification, false country-of-origin declarations, or fraudulent first-sale claims are federal offences with serious penalties.

Impact on e-commerce pricing

For an e-commerce seller importing from China, Section 301 tariffs are a direct cost that must be factored into pricing:

- A product with a $20 FOB China cost + 25% Section 301 tariff = $5 in additional duty - On a $40 retail price, that's a 12.5% margin hit just from the tariff - Add standard MFN duty (e.g. 5%), freight ($2-3/unit for small items), and broker fees - The $20 FOB product may land at $28-30 before Amazon fees or Shopify costs

This is why landed cost calculation — not just FOB price — is critical for profitability. A supplier offering a 5% lower FOB price but in a non-affected country (e.g. Vietnam for some goods) may deliver significantly better margins.

Use an import duty calculator to model the full landed cost including all applicable tariffs before committing to a supplier.

Key takeaways

- Section 301 tariffs are additional duties on Chinese-origin goods, stacked on top of standard MFN rates - Four lists cover ~$370 billion of Chinese goods at rates of 7.5% or 25% - Rates have increased further since 2024 on strategic sectors - Check your specific 8-digit HTS code at hts.usitc.gov — list membership is code-specific - Exclusions exist but are product-specific, time-limited, and subject to USTR approval - Third-country sourcing can help but requires genuine manufacturing activity - De minimis ($800) remains a useful tool for B2C shipments but faces regulatory risk - Always calculate landed cost — not just FOB price — when comparing suppliers