Trump delays new copper tariff over cost concerns for housing and AI gear

The Trump administration has hit pause on imposing new tariffs on refined copper, choosing to sidestep a policy move that would ripple through housing construction, electrical wiring, and the booming AI infrastructure buildout. The US imports roughly half of its annual copper supply and operates just two copper smelters domestically.

The tariff landscape so far

Section 232 tariffs of 50% on many semi-finished copper products and derivatives have already been in effect since August 1, 2025, with modifications made in April 2026. Those duties have already nudged prices higher, squeezed importers, and created downstream headaches for manufacturers who rely on copper as a core input.

The proposed next phase would layer additional tariffs specifically on refined copper. A phased schedule has been floated, starting at 15% in January 2027 and climbing to 30% by 2028. But no final decision has materialized.

Commerce Secretary Howard Lutnick was tasked with assessing the copper market and delivering recommendations by June 30, 2026. That deadline has come and gone without a definitive ruling.

Why copper is the quiet kingpin of the AI boom

S&P Global projects global copper demand will grow by 50% by 2040, driven largely by AI expansion, electrification, and defense applications.

On the residential side, copper remains essential for wiring, plumbing, and HVAC systems. Builders are already contending with elevated material costs from previous rounds of tariffs on steel, aluminum, and lumber.

Political calculus meets industrial policy

The proposed phased approach, starting at 15% and escalating to 30%, suggests the administration is aware of these tensions and looking for a middle path. Companies planning multi-year construction projects need predictable input costs, and an open-ended tariff deliberation is the opposite of predictable.

If the tariffs do eventually land, expect copper futures to see increased volatility, with downstream effects on equities in construction, industrial manufacturing, and data center operators. Companies with locked-in supply contracts would fare better than those exposed to spot market pricing, creating winners and losers within the same sectors.

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