The zero-dollar treatment charge is the headline number that tells the full story. For 2026, the benchmark TC between Antofagasta and Chinese smelters settled at $0/t and 0 c/lb — down from $21.25/t and 2.125 c/lb in 2025. Spot TC/RCs in China have been deeply negative, touching -$90/t in March. Chinese smelters now survive on by-product credits — sulfuric acid, precious metals recovery, and cathode premiums often exceeding $300/t over LME.
The China Smelters Purchase Team (CSPT) agreed to coordinated production cuts of roughly 10% for 2026. China has also frozen about 2 Mt of planned new smelting capacity. If smelters actually sustain 20%+ cuts into Q4, analysts at JP Morgan estimate the refined copper deficit could exceed 350 kt, potentially pushing LME prices back above $14,000/mt.
On the mine supply side, disruptions at Grasberg in Indonesia and Kamoa-Kakula in the DRC, combined with lower-than-expected mine growth, have tightened concentrate availability. JP Morgan highlights that 2026 mine supply growth has been revised down by roughly 500 kt from earlier expectations, to about +1.4% year-on-year. Recycled copper output grew 11.5% year-on-year in Q1 2026, partially offsetting primary constraints.
Chinese refined output remains robust. Q1 2026 refined copper production reached 3.785 Mt, up 9.3% year-on-year. This keeps refined supply flowing even as the concentrate market tightens. The disconnect between concentrate scarcity and refined abundance is the central structural tension in copper today.
Exchange inventories tell both sides of the story. Combined stocks on the LME, COMEX, and SHFE exceeded 1.14 Mt at end-May, up more than 400 kt (+54%) since end-December 2025 — the highest since 2003, per the ICSG. LME stocks specifically have risen strongly in Q2 2026, suggesting refined metal is available even as concentrate is scarce.
Demand signals are mixed. Chinese copper demand remains supported by power grid investment and renewable energy installations, but property sector weakness continues to weigh on wire and cable demand. The U.S. economy shows resilience in construction and data center build-out, while European industrial activity remains tepid. The ICSG projects a small refined surplus for 2026, but this assumes no deeper smelter cuts.
Forward catalysts center on three variables: the pace of Chinese smelter cuts, demand trajectory from the power grid and EV sectors, and any mine supply recovery in H2 2026. The bull case: sustained smelter cuts combine with steady demand to push prices above $14,000. The bear case: Chinese smelter cuts prove temporary as by-product margins improve, and inventory builds accelerate.
Copper buyers face a market where concentrate tightness and refined availability are sending opposite signals. The zero-dollar TC means spot concentrate purchases will carry significant premiums. Buyers should negotiate contracts with concentrate supply clauses and be prepared for cathode premiums above $300/t. The high inventory buffer argues against panic buying for near-term needs, but the structural concentrate deficit means 2027 supply could be significantly tighter. Consider layering in coverage for H1 2027 at current levels around $13,000-13,500/mt. Monitor Chinese smelter operating rates monthly — sustained cuts below 80% utilization would signal a tightening refined market within 60-90 days.