China's copper smelters win better-than-expected $0 TC/RC deal from Antofagasta, sources say

Chilean miner Antofagasta has reportedly agreed to a record-low $0/metric ton and $0/pound copper concentrate processing fee with some Chinese smelters, a significant deviation from the 2025 annual benchmark of $21.25/ton. This unprecedented agreement is driven by an acute global copper concentrate supply shortage, exacerbated by new Chinese smelter capacity coming online. While seen as 'better than expected' compared to current negative spot charges, the zero fees will deepen losses for Chinese smelters, whose revenue largely depends on these fees, potentially forcing production cuts in the world's largest refined copper producer.

Analysis

Chilean miner Antofagasta has reportedly agreed to a record-low copper concentrate processing fee of $0 per metric ton with some Chinese smelters, a stark deviation from the 2025 annual benchmark of $21.25 per ton. This unprecedented zero-fee agreement highlights an acute shortage in the global copper concentrate market, a situation exacerbated by the ramp-up of new smelter capacity in China. While this deal is considered 'better than expected' for smelters compared to the current negative spot charges of approximately -$43 per ton—where they would have to pay miners—it effectively eliminates a key revenue stream. The negative sentiment score for Antofagasta (-0.5) reflects that while the deal signals immense negotiating power for miners in a tight physical market, it also underscores the severe stress across the supply chain. For smelters, this will deepen financial losses and, according to analysts, is likely to force production cuts, which could in turn tighten the supply of refined copper from the world's largest producer.

Key Decisions for Investors

• Investors in copper miners like Antofagasta should interpret this zero-fee agreement as a powerful indicator of a tight concentrate market, which supports miner leverage and could underpin higher underlying copper metal prices.
• The severe margin compression on Chinese smelters signals heightened risk for downstream processing companies and creates a key catalyst to monitor; specifically, any announcements of production curtailments.
• Traders should watch for confirmations of smelter production cuts in China, as a reduction in refined output would be a significant bullish signal for the price of copper metal.