Semiconductors imported into the United States from China carry a 50 percent Section 301 tariff, a rate that took effect in 2025 after the previous 25 percent duty was doubled. That charge applies on top of every other duty already assessed on the shipment, so the total landed cost of a Chinese-origin chip runs well above what the invoice shows. Whether a chip counts as Chinese for tariff purposes turns on where the wafer was fabricated, not where the finished part was packaged, tested, or shipped from.
The 50 Percent Rate and What It Covers
Section 301 of the Trade Act of 1974 gives the U.S. Trade Representative authority to act against unfair foreign trade practices. The original 2018 action against China set a 25 percent tariff on a broad list of semiconductor products. In September 2024, after a four-year review, USTR issued a final determination raising the rate on semiconductors to 50 percent effective in 2025. The increase reaches 16 Harmonized Tariff Schedule subheadings and covers what the government calls “foundational” or legacy chips used in cars, appliances, and industrial equipment.1Federal Register. Notice of Modification: China’s Acts, Policies and Practices Related to Technology Transfer
To find the rate on a specific part, you need its 10-digit HTS code. The main semiconductor headings are HTS 8541 for discrete semiconductor devices and HTS 8542 for electronic integrated circuits, with subheadings for processors, memory, amplifiers, and other categories.2Harmonized Tariff Schedule. Harmonized Tariff Schedule
A second Section 301 investigation, opened in December 2024, targets China’s push for dominance in the semiconductor industry more broadly. USTR held a public hearing in March 2025 and issued a notice of action in December 2025, which points to the possibility of further trade measures beyond the current 50 percent rate.3United States Trade Representative. Section 301 – China’s Targeting of the Semiconductor Industry for Dominance Executive Order 14389, issued in February 2026, ended certain tariffs imposed under the International Emergency Economic Powers Act, and it explicitly leaves Section 301 duties untouched.4Federal Register. Ending Certain Tariff Actions
How the Chip’s Country of Origin Is Decided
The tariff turns on where a chip legally originates, and that is not necessarily where it shipped from. U.S. Customs and Border Protection applies the substantial transformation test: origin lies in the country where the product underwent a fundamental change in form, character, or use.5International Trade Administration. Rules of Origin: Substantial Transformation
For semiconductors, wafer fabrication is almost always the step that fixes origin. In a 2024 ruling on integrated circuits with wafers fabricated in South Korea and then assembled in China, CBP held that the Chinese assembly did not substantially transform the product; the finished chips remained South Korean goods for tariff and marking purposes.6U.S. Customs and Border Protection. N333934: The Country of Origin of Integrated Circuits
The rule cuts both ways. A chip fabricated in China does not shed that origin by being packaged or tested somewhere else. Repackaging, testing, and simple assembly generally do not qualify as substantial transformation. Rerouting a Chinese-fabricated chip through a third country without meaningfully changing it exposes the importer to both the full tariff and penalties for misrepresenting origin.
Section 301 Duties Stack on Everything Else
The 50 percent tariff is not a replacement for other duties. It sits on top of any antidumping duty, any countervailing duty, and the normal most-favored-nation rate for the product’s HTS classification. A chip already covered by an antidumping order costs the importer the antidumping margin plus 50 percent Section 301 plus any countervailing duty plus the base rate. CBP treats each layer as separately enforceable, and underestimating the combined total is one of the most common compliance failures on high-tariff imports.
Penalties for Getting Classification or Origin Wrong
Misstating the HTS code or the country of origin carries penalties under 19 U.S.C. § 1592 that scale with culpability:
- Fraud, meaning a knowing and intentional violation, carries a maximum civil penalty equal to the full domestic value of the merchandise.
- Gross negligence caps at the lesser of the domestic value or four times the lawful duties lost, or 40 percent of dutiable value if no duties were affected.
- Negligence caps at the lesser of the domestic value or two times the lawful duties lost, or 20 percent of dutiable value if no duties were affected.7Office of the Law Revision Counsel. 19 US Code 1592 – Penalties for Fraud, Gross Negligence, and Negligence
CBP can also seize merchandise if it has reasonable cause to believe a violation occurred and seizure is needed to protect revenue. Unpaid duties are recoverable regardless of whether a separate monetary penalty is imposed.
Prior Disclosure Cuts the Penalty Sharply
An importer who catches a violation before CBP does can file a prior disclosure. For gross negligence and negligence, a valid disclosure reduces the penalty to just the interest that accrued on the unpaid duties between liquidation and the date the correct amount is tendered. For fraud, the reduced penalty is 100 percent of the duty loss, with no further mitigation, and disclosure does not shield the company from a criminal referral to the Department of Justice.8eCFR. 19 CFR Part 171, Appendix B – Customs Regulations, Guidelines for the Imposition and Mitigation of Penalties for Violations of 19 USC 1592
To qualify, the disclosure has to include the entry numbers, dates and ports of entry, a description of the false statements or omissions, how they occurred, and the correct information that should have been reported. The actual duty loss must be tendered. A vague or incomplete disclosure does not qualify for the reduced schedule.
Requesting an Exclusion from the Tariff
USTR periodically opens windows for importers to request that specific products be excluded from Section 301 tariffs. Requests are filed through USTR’s electronic portal and must identify the product by its 10-digit HTSUS subheading with detailed technical specifications, dimensions, and intended applications. The heart of the case is showing that the specific chip cannot be sourced domestically or from a non-tariffed country, supported by price quotes, lead-time data, and capacity information from alternative suppliers. Applicants generally have to disclose revenue and the share of their business affected.
Each request opens a public comment period, which in recent proceedings has run about 30 days, during which competitors, domestic manufacturers, and other interested parties can weigh in.9Federal Register. Request for Comments on Whether Particular Exclusions in the Section 301 Investigation of China’s Acts, Policies, and Practices Related to Technology Transfer, Intellectual Property, and Innovation Warrant Further Extension USTR then works through economic merits, sourcing alternatives, and strategic considerations, a review that can take several months.
Granted exclusions can apply retroactively. CBP guidance lets importers seek refunds of Section 301 duties paid on earlier imports of excluded products, either through a Post Summary Correction if the entry is still within that window or through a protest if the entry has liquidated but the protest deadline has not passed.10U.S. Customs and Border Protection. Section 301 China Reinstatement of Certain Exclusions
Ways to Reduce the Tariff Bill
A few legitimate tools can lower what you pay, each with real limits.
Duty Drawback on Exported Products
If an imported chip goes into a finished product that is later exported, the importer may claim a drawback (refund) of duties paid, including Section 301 duties. Drawback runs under 19 U.S.C. § 1313 and requires detailed records tracing the imported component through manufacturing and export. The paperwork is significant, but companies with meaningful export volume can recover a large share of the tariff cost.
Foreign Trade Zones Do Not Help Much Here
Foreign Trade Zones ordinarily let importers defer or reduce duties on goods processed inside the zone before entering U.S. commerce. Section 301 blocks the usual benefit. CBP requires any product subject to Section 301 duties admitted to an FTZ to enter under privileged foreign status, which locks in the tariff at the time of admission. The typical FTZ move of picking a lower rate after manufacturing is not available for 301-covered goods.11U.S. Customs and Border Protection. Section 301 Trade Remedies Frequently Asked Questions
Moving Fabrication
The long-term option is to fabricate wafers somewhere Section 301 does not reach. Because origin turns on the fab step, moving that one step changes the tariff outcome. Facilities in Southeast Asia, India, and parts of Europe have drawn investment for exactly this reason. Building or expanding a fab takes years and billions of dollars, so this is not a near-term fix.
Records You Must Keep
Importers must retain entry records for up to five years from the date of entry, including the entry summary, commercial invoices, packing lists, country-of-origin documentation, and anything supporting the HTS classification. For drawback claims, the retention period runs three years after liquidation of the claim.12Office of the Law Revision Counsel. 19 US Code 1508 – Recordkeeping CBP audits regularly target high-tariff categories, and semiconductors under Section 301 sit squarely in that zone. The agency expects importers to exercise reasonable care in classifying goods and determining their value; a company that cannot produce records during an audit faces the same penalty tiers described above, and the presumption on any disputed classification shifts against it.