Finance

Japan, Spain, South Korea warn over unsustainable copper processing fees

Published by Global Banking & Finance Review

Posted on October 15, 2025

2 min read

· Last updated: January 21, 2026

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Japan, Spain, South Korea warn over unsustainable copper processing fees
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By Yuka Obayashi TOKYO (Reuters) -Japan, Spain and South Korea issued a rare joint statement on Wednesday expressing deep concerns over tumbling copper treatment and refining charges (TC/RCs), warning

Japan, Spain, and South Korea Raise Alarm Over Falling Copper Processing Fees

Concerns Over Copper Processing Fees

By Yuka Obayashi

Impact on Smelting Operations

TOKYO (Reuters) -Japan, Spain and South Korea issued a rare joint statement on Wednesday expressing deep concerns over tumbling copper treatment and refining charges (TC/RCs), warning both smelters and miners cannot develop sustainably under current conditions.

Market Dynamics and Challenges

Copper smelters worldwide are grappling with falling processing fees and shrinking margins amid tight concentrate supply and expanding smelting capacity in China. In June, some Chinese smelters agreed to process copper for Chilean miner Antofagasta at no charge.

Current Trends in TC/RCs

"We are deeply concerned that this deterioration in TC/RCs is prompting a reassessment of copper smelting operations worldwide, with several companies already indicating intentions to scale down or withdraw from copper concentrate smelting," the three countries' industry ministries said after an online meeting.

Responses from Major Smelters

TC/RCs, a key source of revenue for smelters, are fees paid by miners when they sell concentrate, or semi-processed ore, to be refined into metal. But in some spot deals this year, TC/RCs have turned negative, forcing smelters to pay miners to provide smelting services.

The ministries said the current market environment prevents copper smelting from developing sustainably alongside mining in resource-producing countries and warned that growing dependence on specific countries is undesirable for both resource-producing and smelting countries.

"We hope TC/RCs will return to sustainable levels for copper concentrate trading," they said, adding they will continue engaging with relevant countries and stakeholders to establish a resilient and sustainable copper supply chain.

Naoki Kobayashi, deputy director of the mineral resources department at Japan's industry ministry, said the three countries -- all importers of copper concentrate with domestic smelting operations -- wanted to raise the issue during the metals industry gathering LME Week in London. 

Japan's major copper smelters, JX Advanced Metals and Mitsubishi Materials, have said they plan to scale back copper concentrate processing as declining fees erode margins.

(Reporting by Yuka Obayashi; Editing by Sharon Singleton)

Key Takeaways

  • Japan, Spain, and South Korea issued a joint statement on copper fees.
  • Falling TC/RCs impact smelters' and miners' sustainability.
  • Chinese smelters are processing copper at no charge.
  • Negative TC/RCs force smelters to pay miners.
  • Major smelters plan to scale back operations.

Frequently Asked Questions

What is the impact of falling TC/RCs on smelters?
Falling TC/RCs reduce smelters' profit margins, prompting some to consider scaling back operations or withdrawing from copper processing.
What are the concerns regarding copper processing fees?
Japan, Spain, and South Korea are concerned that declining copper processing fees threaten the sustainability of both smelting and mining operations.

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