DRC concentrate export ban is unlikely to materially tighten global copper supply

Overview

The Democratic Republic of the Congo banned exports of copper and cobalt concentrates under an order signed on June 29. After the news became public on August 6, copper prices once rose about 2% to $14,370/t, then gave back the gains and closed at $14,103/t. Goldman Sachs believes the measure will not have a material impact on the global copper supply-demand balance: on the one hand, the DRC has repeatedly restricted concentrate exports since 2013, and historically implementation has usually been softened through rolling exemptions; on the other hand, with the expansion of local smelting capacity, concentrate export volumes have already declined significantly. The report believes the current strength in copper prices is mainly due to U.S. tariff risk, continued U.S. imports, China inventories at seasonal lows, and tightening ex-U.S. spot markets.

Core views

The ban itself is not a new major supply shock, and the trade volumes it covers are very small relative to global mine supply. The DRC’s copper exports are shifting from concentrate to higher-value-added products such as blister copper, reflecting the long-term trend of resource countries capturing downstream value through export controls and local processing requirements. Short-term copper prices are still supported by spot tightness and trade-policy expectations, but the report does not believe current spot prices can be sustained through the end of 2026. The cobalt market is expected to be unaffected by the ban because of differences in export form and the quota system.

Analysis framework

The report assesses the incremental impact of the ban by combining policy history, export trade flows, changes in smelting capacity, and the share of global mine supply, and explains copper price movements through U.S. import demand, China inventories, import premiums, and the degree of tightness in ex-U.S. markets; it also compares the DRC policy horizontally with Zimbabwe’s suspension of lithium concentrate exports and Indonesia’s restrictions on the nickel value chain.

Methodology notes

• Supply-demand analysisMarginal impact assessment for the global copper balance

  Assess the importance of a policy shock based on the share of restricted export volumes in global mine supply.

  The report estimates that affected flows in 2026Q1 accounted for about 0.3% of global mine supply on an annualized basis, and therefore judges that they are insufficient to significantly change the global copper balance.

• Trade-flow analysisExport-structure substitution analysis

  Distinguish among different export forms such as copper concentrate, blister copper, and copper scrap to identify whether lower trade volumes represent an actual loss of production.

  After the Kamoa-Kakula smelter came online, part of copper exports shifted from concentrate to blister copper, so the decline in concentrate flows is not equivalent to a proportional reduction in global copper supply.

• Market analysisSpot tightness indicator framework

  Use import demand, the seasonal position of inventories, and import premiums to judge regional spot market tightness.

  Advance U.S. imports are absorbing international market supply, while China inventories are near the bottom of their seasonal range and import premiums are elevated, supporting the view that ex-U.S. copper markets are tightening.

• Policy analysisResource-country commodity control cycle

  Resource-holding countries increase the value added of domestic industrial chains through export restrictions and local processing requirements.

  The DRC’s copper and cobalt concentrate ban has a similar policy logic to Zimbabwe’s suspension of lithium concentrate exports and Indonesia’s restrictions on the nickel value chain.

Asset mapping & comparison

Structured mapping from thesis to named assets (strengths, weaknesses, peers, risks).

• Copper

  Direct research subject of the report

  Strengths

  Continued U.S. import demand, China inventories at seasonal lows, elevated import premiums, and tightening ex-U.S. spot markets.

  Weaknesses

  The actual volume covered by the ban is very small, making it difficult to create a new structural supply gap; the report expects the current high spot level cannot be sustained through year-end.

  Comparison

  Compared with DRC supply policy, U.S. tariff expectations and regional spot flows are more likely to dominate short-term prices.

  Risks

  Changes in U.S. tariff policy, a pullback in import demand, weaker-than-expected restocking in China, or easing spot tightness may pressure prices lower.

• Copper concentrate

  Product directly covered by the export ban

  Strengths

  If strictly enforced without exemptions, local concentrate trade flows may tighten further.

  Weaknesses

  Export volumes have already declined sharply, and part of the flows has been replaced by blister copper after local smelting.

  Comparison

  Concentrate accounted for about 11% of the DRC’s copper exports in 2025 and had fallen to about 2% in 2026Q1.

  Risks

  Exemption arrangements, statistical-basis differences, and the pace of local smelter ramp-up may affect the actual restricted volume.

• Blister copper

  Main substitute export form after the reduction in concentrate exports

  Strengths

  Improved local smelting capacity helps increase exports of higher-value-added products and reduces dependence on concentrate export exemptions.

  Weaknesses

  Smelter ramp-up, operational stability, and logistics conditions may still constrain output release.

  Comparison

  Exports of smelted copper and copper scrap reached 108kt in 2026Q1, compared with 185kt for full-year 2025.

  Risks

  Smelting disruptions or further policy extension to downstream products may weaken the substitution effect.

• Cobalt

  Nominally covered by the ban, but expected to have no material impact

  Strengths

  The main export form is cobalt hydroxide rather than concentrate, and existing trade flows do not directly depend on concentrate exports.

  Weaknesses

  Supply is still constrained by the DRC’s concentration and the existing quota system.

  Comparison

  Unlike copper concentrate, cobalt export volumes are mainly managed under the current quota system.

  Risks

  If the policy expands to cobalt hydroxide or the quota system tightens, the current judgment of no impact may need to be revised.

Key data

• Intraday high in copper prices after the news announcement$14,370/tCopper prices once rose about 2%.
• Copper closing price that day$14,103/tThe intraday gains were then fully retraced, and the price closed roughly flat on the day.
• Affected flows in 2026Q116ktReport overview basis; on an annualized basis, this accounts for about 0.3% of global mine supply.
• Copper concentrate exports in 2025371ktAbout 11% of the DRC’s total copper exports of 3.4Mt in 2025.
• Copper concentrate exports in 2026Q119ktAbout 2% of total copper exports in the same period; this basis differs from the 16kt figure stated in the report overview.
• Kamoa-Kakula smelter capacity500ktpaCommissioned at the end of 2025, driving exports to shift from concentrate to blister copper.
• Refined/smelted copper and copper scrap exports in 2026Q1108ktIncludes blister copper; by comparison, the full-year 2025 figure was 185kt.

Impact & implications

For the copper market, the ban’s direct supply shock is limited and insufficient on its own to support a sustained risk premium; more important pricing variables are import demand ahead of potential U.S. refined copper tariffs, the diversion of international supply to the United States, China inventories, and import premiums. For the industrial structure, the policy will continue to promote local smelting and exports of higher-value-added products in the DRC. For the cobalt market, because the main export product is cobalt hydroxide and quota management is already in place, the ban is not expected to have a meaningful new impact.

Risks

• If the DRC no longer grants exemptions and the actual restricted volume is higher than the report estimates, the supply impact may be underestimated.
• The report gives both 16kt and 19kt for related 2026Q1 flows, and differences in statistical basis may affect precise calculations.
• There is uncertainty around U.S. refined copper tariff policy and implementation timing, which could significantly change cross-regional trade flows and prices.
• If Chinese demand, inventories, and import premiums weaken, the tightness in ex-U.S. spot markets could ease quickly.
• If the Kamoa-Kakula smelter ramp-up falls short of expectations, the substitution path from concentrate to blister copper may be hindered.
• If resource-country export controls expand further to smelted products, the current judgment based on export-structure conversion may become invalid.

What to watch

• Whether the DRC mining minister grants one-year export exemptions and the scope of those exemptions.
• Copper concentrate, blister copper, and copper scrap export data for subsequent quarters in 2026.
• The ramp-up pace and operating stability of the Kamoa-Kakula 500ktpa smelter.
• The final decision, implementation timing, and import pace related to U.S. refined copper tariffs.
• Seasonal changes in China copper inventories and the trend in import premiums.
• Differences in inventories and spot premiums/discounts between U.S. and ex-U.S. markets.
• Whether the DRC cobalt quota system is adjusted or expanded to other product forms.
• Whether other resource countries further adopt export restrictions or local processing requirements.