Section 301 Tariffs

What are Section 301 Tariffs?

If you import goods from China, Section 301 tariffs are already affecting your landed cost. They stack on top of your standard duty rate, apply at the HTS code level, and change without advance notice. This guide explains what they are, how to check if your products are affected, and how to calculate their full cost impact.

What Are Section 301 Tariffs?

Section 301 tariffs are additional customs duties imposed by the United States on imports from China. They are authorized under Section 301 of the Trade Act of 1974, which gives the U.S. Trade Representative (USTR) authority to investigate and act against foreign trade practices deemed “unreasonable, unjustifiable, or discriminatory.”

These tariffs were not designed as a standard revenue mechanism. They are a trade enforcement tool. When the USTR finds that a foreign government’s practices burden U.S. commerce, Section 301 authorizes punitive tariffs, withdrawal of trade concessions, or negotiated agreements as remedies.

Section 301 tariffs sit on top of the standard Most Favored Nation (MFN) duty rate. A product with a 5% base duty and a 25% Section 301 tariff carries a combined rate of 30% before freight, insurance, or port fees are added. That distinction matters when you calculate landed cost.

Why Were Section 301 Tariffs Introduced?

In 2018, the USTR found that China had engaged in forced technology transfer, cyber-enabled theft of U.S. intellectual property, discriminatory licensing practices, and state-funded acquisitions of U.S. assets. The investigation triggered the first wave of Section 301 tariffs in July 2018.

Four rounds of tariffs followed. China retaliated with duties on $110 billion worth of U.S. goods. The resulting trade dispute reshaped global supply chains. Importers shifted sourcing to Vietnam, India, Thailand, and Mexico. Manufacturers reclassified products to reduce tariff exposure. Neither move eliminated the underlying compliance obligation.

A statutory four-year review in 2024 resulted in significant rate increases across strategic sectors, including electric vehicles (100%), semiconductors (50%), and solar cells (50%). Section 301 tariffs now apply to approximately $370 billion in Chinese imports.

Does My Product Fall Under Section 301 Tariffs According to the Harmonized Tariff Schedule?

Exposure is determined by two factors: your HTS code and your country of origin. Here is the process.

Step 1: Identify your HTS code. The Harmonized Tariff Schedule (HTS) is the U.S. classification system for imported goods. Every product is assigned a 10-digit HTS code. Section 301 tariff exposure is tied to the 8-digit level. Use the USITC HTS search tool or work with a licensed customs broker to confirm your classification. Wrong codes mean wrong duty rates and CBP audit exposure. KlearNow’s AI-powered platform automates HTS classification at scale, reducing misclassification risk across large product catalogs.

Step 2: Confirm country of origin. Section 301 tariffs apply to China-origin goods. CBP scrutinizes transshipment, simply routing goods through a third country does not eliminate the obligation. Country of origin must reflect actual manufacturing, not final assembly or relabeling.

Step 3: Check the USTR Section 301 Lists. The tariffs are organized across four lists. Your 8-digit HTS code determines which list, if any, applies.

Source: China Briefing, 2025

Step 4: Check for active exclusions. The USTR has granted product-specific exclusions for defined periods, but not all products qualify and eligibility is limited to specific product definitions. Exclusions expire. The USTR launched an exclusion portal in October 2024 for manufacturing machinery under HTS Chapters 84 and 85. Remaining exclusions currently run through November 10, 2026.

Step 5: Account for tariff stacking. Section 301 and Section 232 tariffs can apply simultaneously to a single shipment. A steel enclosure from China can carry a 25% Section 232 rate as a steel article and a 25% Section 301 rate as a China-origin good. Evaluate each authority independently, but importers may still need to pay custom related costs and taxes required by the country’s regulations.

Step 6: Monitor for changes. Rates, lists, and exclusions are updated via USTR Federal Register notices. Set up automated alerts or use a compliance platform with regulatory monitoring built in.

How Are Section 301 Tariffs Used to Calculate Landed Cost?

Duty formula:

• Total Duty = Base MFN Rate + Section 301 Rate (+ Section 232 if applicable)

Landed cost formula:

• Total Landed Cost = Product Cost + Freight Charges + Total Customs Duties + Insurance Costs + Port and Handling Fees + currency conversion

Determining landed cost means including duties required, shipping expenses, port charges, taxes, and other expenses through the final destination.

Working example.

An importer brings in $100,000 worth of industrial components from China. The product’s base MFN duty is 5%. It falls under Section 301 List 1 at 25%.

• Base duty: $5,000
• Section 301 duty: $25,000
• Total duties: $30,000
• Product and shipping costs, including shipping fees within transportation costs, insurance, port fees, and handling: ~$10,000
• Total landed cost: ~$140,000

Shipping costs vary based on package weight, size, delivery speed, and logistics provider.

Pre-2018, the same shipment cost approximately $108,000 all-in. The Section 301 tariff created a 23% increase in total landed cost. That difference does not disappear into overhead. It comes directly out of profit margins unless pricing is adjusted.

Additional landed cost variables include currency exchange rates (relevant when paying suppliers in non-USD), insurance costs that protect against damaged goods or loss during transit, demurrage fees when containers sitting beyond the free time allotted inside the terminal, and payment processing fees on large duty payments; shipping lines may also impose late port charges, harbor fees, or cancellation costs as part of various port charges.

How Section 301 Tariffs Affect Total Landed Cost

Tariff rate alone does not tell you what your goods actually cost. Understanding landed cost is necessary for sound business pricing decisions, not just product costing.

• At the product level, a 25% Section 301 tariff on a $50 unit adds $12.50 in duty before a single freight or insurance dollar is counted. Businesses that use supplier invoice price as their cost baseline will underprice consistently.
• At the portfolio level, exposure is uneven. An importer with 500 SKUs across 12 China-based suppliers may have products spread across List 1 (25%), List 4A (7.5%), and some with active exclusions. Without SKU-level landed cost analysis, the portfolio view is always inaccurate, especially when suppliers in different countries shift custom related costs and product prices. Pricing decisions made on averages rather than actuals erode margins at scale.
• At the annual budget level, research shows most importers use a combination of approaches: absorbing 30–40% of tariff increases, passing 30–40% through to buyers, and negotiating 20–30% reductions with suppliers, while carrier discounts can lower shipping expenses and protect margins. All three levers require knowing actual landed cost first. Accurate cost analysis also supports entry into new markets and broader global trade decisions; 87% of U.S. businesses view international expansion as essential. Guessing creates exposure on all three fronts.

Accurate landed cost calculation also prevents the compliance gap where incorrect duty payments trigger CBP post-entry audits. Learn how KlearNow supports trade compliance across your import program.

Common Challenges Importers Face

• Incorrect HTS classification: A misclassified product triggers the wrong duty rate. When that error spans hundreds of shipments, the cumulative financial exposure is significant. CBP’s audit expectations have increased since 2018.
• Missed exclusions: Exclusions are product-specific and time-limited. Importers who qualify but do not actively track USTR notices leave money on the table.
• Supplier data gaps: Section 301 compliance requires accurate country of origin documentation and quality assurance checks from every supplier. One missing or inaccurate certificate creates liability for the importer, not the supplier.
• Manual tracking: Section 301 rates have changed multiple times since 2018. Spreadsheet-based monitoring creates lag between regulatory updates and actual duty calculations.
• Multi-supplier complexity: Importers managing large supplier networks face compounding classification and monitoring demands, especially when raw materials sourced across suppliers can shift classification and cost exposure. The risk of inconsistency grows with every new supplier and every new SKU.

KlearNow’s KlearCustoms platform automates tariff determination across HTS lines, factors in country of origin and applicable trade agreements, accounts for the fees involved such as a processing fee or bank charges where relevant, and flags classification exceptions for broker review before filing.

Frequently Asked Questions

What is the difference between Section 301 and Section 232 tariffs?

Section 301 tariffs target China-origin goods for unfair trade practices. Section 232 tariffs apply to specific products like steel, aluminum, and copper, on national security grounds, regardless of country of origin. Both can stack on a single shipment, so importers must evaluate each independently when calculating total landed cost.

What is the tariff rule 301 / what is Super 301?

Section 301 of the Trade Act of 1974 is the standing authority for USTR-imposed retaliatory tariffs on unfair foreign trade practices. Super 301 was a separate 1988 congressional amendment that created a temporary, more aggressive version of the provision with annual reporting requirements. It lapsed and is no longer in effect.

How do I find my HTS code?

Use the USITC HTS database at hts.usitc.gov, or work with a licensed customs broker. The first six digits follow the international Harmonized System (HS) standard, and general rules of classification still apply. The remaining four digits are U.S.-specific and determine your exact duty rate and Section 301 exposure.

How often do Section 301 tariff rates change?

Rates are reviewed periodically by the USTR and can change with limited notice. The 2024 statutory four-year review triggered increases across strategic sectors effective September 2024, January 2025, and January 2026. Monitoring Federal Register notices or using a compliance platform with automatic rate updates is the only reliable approach.

Can I recover Section 301 duties through duty drawback?

Yes. Unlike Section 232 duties, Section 301 duties are generally eligible for duty drawback when goods are exported from the United States. Drawback claims require detailed entry documentation and are subject to strict timelines, so working with a licensed customs broker is advisable.

Is landed cost the same as COGS?

No. COGS covers the cost to produce or acquire a product. Landed cost covers the total cost to get that product to its destination, including international shipping, customs duties, insurance costs, various fees, and other expenses. Section 301 tariffs are a landed cost variable, not a manufacturing cost. Not all charges apply to every shipment, but importers still need a complete cost calculation example for their own lane and product. When the two are conflated, margin calculations are wrong before the goods leave the port.

How do Section 301 exclusions work?

The USTR grants product-specific exclusions that temporarily reduce or eliminate Section 301 duties, and ceramic products may fall within broader tariff-classification chapters depending on the item. Exclusions must be applied for during open USTR comment periods, are limited in scope, and expire unless renewed. USTR approved roughly 35% of exclusion requests for Lists 1 and 2, and only 5–7% for Lists 3 and 4A.