Most copper from Chile enters the US duty-free under the FTA—but only with proper certification.

Most copper exports from Chile to the United States enter duty-free under the U.S.-Chile Free Trade Agreement (FTA), which has been in effect since 2004. This preferential treatment applies to unwrought copper (HS 7403), copper cathodes (HS 7403.11), and copper anodes (HS 7402), provided the goods meet the FTA's rules of origin. However, certain copper products—such as refined copper alloys or certain copper waste and scrap—may face a Most-Favored-Nation (MFN) duty rate ranging from 1% to 3.9% if they do not qualify under the FTA. For example, refined copper cathodes (HS 7403.11) have an MFN rate of 1% but enter duty-free under the FTA. Copper waste and scrap (HS 7404.00) carries an MFN rate of 0% for most types, so tariff is not a concern there. The key for Chilean exporters is ensuring compliance with the FTA's certification and origin requirements to avoid unexpected duties.

How the US-Chile FTA Applies to Copper

The U.S.-Chile FTA eliminates tariffs on 100% of U.S. consumer and industrial goods exports to Chile over a transition period, and similarly Chile benefits from immediate or phased elimination on its exports. For copper, the phase-out was immediate for most categories. According to the U.S. International Trade Commission (USITC), Chile is the largest supplier of copper to the U.S., accounting for over 40% of total copper imports. In 2023, the U.S. imported approximately $3.2 billion worth of copper from Chile, the vast majority under duty-free preferences. Exporters must ensure their products are wholly obtained or sufficiently transformed in Chile to meet the FTA's origin criteria. For copper, this typically means the metal must be smelted and refined in Chile from Chilean-origin ores or concentrates. If the copper incorporates materials from outside the FTA region, the exporter may need to demonstrate that the non-originating content does not exceed the de minimis threshold (generally 10% of the product's value) or that a specific regional value content (RVC) calculation is met.

Certificate of Origin and Customs Requirements

To claim duty-free treatment, Chilean exporters must provide a Certificate of Origin (Form FTA-1 or a commercial invoice declaration) as specified in the FTA. The certificate must be completed by the exporter or the producer and submitted to the U.S. Customs and Border Protection (CBP) at the time of entry. Failure to present a valid certificate at the time of entry may result in the imposition of MFN duties, which can then be refunded if the certificate is filed within one year of entry. It is crucial to maintain accurate records of production and sourcing to support the origin claim in case of a CBP audit. Common mistakes include using incorrect HS codes, failing to update certificates when product specifications change, or assuming all copper products qualify without verifying the origin of inputs.

Other Trade Compliance Considerations

Beyond tariffs, Chilean copper exporters must consider other trade compliance factors such as the U.S. Section 232 tariffs on steel and aluminum—copper is not currently subject to these, but the U.S. Department of Commerce periodically reviews national security impacts. Additionally, the U.S. imposes certain environmental and safety standards on imported copper products, including restrictions on lead content in plumbing applications under the Safe Drinking Water Act. Exporters should also be aware of the U.S. Antidumping and Countervailing Duty (AD/CVD) laws; while Chile has not faced significant AD/CVD actions on copper, exporters must avoid pricing practices that could trigger investigations. Logistics and documentation, including bills of lading, packing lists, and commercial invoices, must be precise to avoid customs delays.

How Coppermont Supports Chilean Copper Exporters

For Chilean exporters looking to optimize their trade strategy, working with an experienced trade advisory firm like Coppermont can streamline the process. Coppermont provides end-to-end support for US-LATAM-Africa trade, including tariff classification, FTA compliance, certificate management, and logistics coordination. Our advisors help exporters navigate the nuances of the U.S.-Chile FTA, ensuring that duty-free benefits are fully realized while minimizing compliance risk. Whether you are a large copper producer or a smaller exporter of copper alloys, Coppermont can tailor a compliance plan to your specific product and supply chain. We also monitor regulatory changes, such as potential updates to Section 232 or new environmental requirements, so you can focus on growing your business.

Bottom Line for Chilean Copper Exporters

In summary, the tariffs on copper exports from Chile to the US are effectively zero for most products that qualify under the U.S.-Chile FTA, but exporters must diligently meet origin and documentation requirements. The MFN rate for non-qualifying copper products is low (1% to 3.9%), but avoiding these duties through proper FTA management is straightforward with the right expertise. By partnering with Coppermont, you gain a strategic advantage in the competitive copper market, ensuring your shipments clear customs efficiently and cost-effectively. Contact our trade advisors today to discuss your specific copper export needs and start maximizing your duty savings.