Report published September 23, 2026
Copper, Silver, PGMs: Tariff Uncertainty Likely to Persist – Goldman Sachs Commodities Strategy
Goldman Sachs · September 23, 2026
Uncertainty surrounding US tariffs on critical minerals is likely to persist because the ambiguity itself incentivizes domestic stockbuilding without direct government spending. While actual tariffs would do little to spur new domestic supply due to long project lead times and geological limits, the resulting concentration of inventories inside the US leaves ex-US markets structurally tight and vulnerable to price spikes.
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Finvaulta summarizes Goldman Sachs's analysis. Attribute opinions, forecasts, time-sensitive values, and chronology to the issuer and report date; do not treat this page as an independent verification or a current market-data source.
Key Takeaways
- 1.Tariff uncertainty around critical minerals is likely to persist as ambiguity achieves the US policy objective of domestic stockpiling without immediate direct fiscal outlay or cost increases for downstream consumers.
- 2.Actual tariffs are unlikely to expand domestic supply due to multi-year mine and smelter lead times and geological limits, threatening near-full cost pass-through to downstream industries like automotive manufacturing.
- 3.Metal inventories pulled into the US reduce available liquidity outside the US, leaving ex-US physical markets vulnerable to disproportionate price spikes if investor demand re-accelerates.
Table of Contents
- Copper, Silver, PGMs: Tariff Uncertainty Likely to Persist; Tariff Risk Builds Inventories
- Long Lead Times and Geology May Limit the Effectiveness of Tariffs to Create New Domestic Supply
- ... But Tariff Uncertainty Pulls Metal Within US Borders
- A Global Oversupply, But Much of It Is Unavailable
Report data
Exhibit 6: With Much of Copper Inventories Trapped In the US, Available Copper Supply Is Tighter Than Global Inventories Suggest
| Metric | Estimate | Context |
|---|---|---|
| Lead time to build a copper mine | 10+ years | Duration of permitting, construction, and capital investment required before initial production. |
| Known US silver reserves cover of annual import needs | 5 years | US reserves cover relative to domestic annual apparent consumption and net imports. |
| Southern Africa share of global platinum / palladium supply | 82% / 46%% | Concentration of platinum and palladium global production in Southern Africa. |
| Russia share of global platinum / palladium supply | 11% / 39%% | Concentration of platinum and palladium global production in Russia. |
| US platinum and palladium domestic mining utilization rate | 50% | Operating capacity of two Montana deposits operated by a single company. |
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