Congo Seals Glencore’s Mine Offices Over $3 Billion Claim

DR CONGO · MINING

Key Facts

—Offices sealed: Agents of Congo’s tax authority, the DGI, sealed Kamoto Copper Company’s offices in Kolwezi on July 9, 2026, Bloomberg reported.

—A $3 billion claim: The Congolese outlet Actualite.cd puts the assessed arrears at roughly US$3 billion; some local reports cite claims of up to $6 billion.

—Production continues: The raid has not affected output at Kamoto’s nearby mines and processing plants, a person familiar told Bloomberg.

—Glencore pushes back: A company spokesperson said Glencore disputes the DGI’s claims and continues to engage with the authorities.

—A giant at stake: Kamoto produced about 190,000 tons of copper last year and targets 300,000 tons; Congo is the world’s second-largest copper producer and first in cobalt.

—An American deal waits: Orion CMC, backed by the US International Development Finance Corp., agreed in February to buy 40 percent of Glencore’s interest — a deal yet to close.

The Glencore Congo tax dispute burst into the open on July 9, 2026, when tax agents sealed Kamoto Copper Company’s offices in Kolwezi over arrears officials assess at roughly US$3 billion — a claim the Swiss trader disputes while mining continues.

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Glencore Congo tax dispute: what happened in Kolwezi

Officials from the Direction Générale des Impôts, Congo’s national tax agency, arrived at Kamoto Copper Company’s offices in the mining city of Kolwezi on Thursday, July 9, and placed them under seal. The move escalates a row over payments the state says it is owed by one of the country’s largest mining operations.

Kolwezi sits in Lualaba province, the heart of the Democratic Republic of Congo’s copper belt, and styles itself the cobalt capital of the world. Kamoto, known locally as KCC, is among the biggest producers of both copper and cobalt in the country.

The agency acted after settlement talks with the company failed, a person familiar with the matter told Bloomberg. Congolese media reported that security personnel accompanied the tax agents as seals went up on offices and several installations.

A $3 billion claim the company rejects

The DGI assesses the alleged arrears at about US$3 billion, according to the Kinshasa-based outlet Actualite.cd, while some local sources describe claims ranging beyond $6 billion. Bloomberg’s sources said simply that the state alleges the Glencore unit owes billions of dollars.

Glencore rejects the assessment. A spokesperson said the company disputes the DGI’s claims and continues to engage with the authorities, and production at Kamoto’s nearby mines and processing facilities has so far carried on.

The gap between the two positions is enormous even by mining-industry standards. How it narrows — through negotiation, arbitration or further enforcement — will be read as a signal by every foreign investor in Congolese minerals.

Why Kamoto matters far beyond Congo

Congo is the world’s second-largest copper producer and its largest source of cobalt, the metal that hardens batteries for electric cars and phones. Kamoto produced about 190,000 tons of copper last year and aims to reach 300,000 tons annually.

Copper prices surged more than 40 percent last year and have extended gains in 2026, lifted by the artificial-intelligence boom and the clean-energy transition. That rally raises the stakes on every ton the Kolwezi pits deliver — and on every dollar the state believes it is owed.

Cobalt gives the standoff a second edge. Congo supplies roughly 70 percent of the world’s output of the battery metal, so any disruption at a producer of Kamoto’s size ripples straight into the supply chains of carmakers from Detroit to Shenzhen.

Glencore holds 70 percent of Kamoto, with the Congolese state and its mining company Gécamines controlling the remaining 30 percent. The structure means the government is squeezing a business it partly owns.

An American buyer waits in the wings

The timing complicates a landmark American investment. Orion CMC, an investment vehicle backed by the state-owned US International Development Finance Corp., announced a preliminary deal in February to buy 40 percent of Glencore’s interest in Kamoto and a second Congolese copper-cobalt mine.

That transaction has not yet closed, as Bloomberg’s reporting notes. A multibillion-dollar tax cloud over the asset lands squarely in the middle of Washington’s push to secure Congolese minerals as an alternative to Chinese-controlled supply.

What to watch next

The immediate question is whether the seals spread from offices to operations, which would put actual copper and cobalt volumes at risk. The parallel question is whether talks resume and produce a settlement figure both sides can live with.

The episode fits a broader pattern of resource states pressing harder on foreign operators as commodity prices climb, from Ghana’s gold belt to Congo’s own banking sector. Kinshasa has spent 2026 chasing revenue wherever it believes money has gone untaxed.

For Congo, the test is to raise revenue without freezing investment at the very moment American and Chinese capital are competing for its mines. For Glencore, the sealed doors in Kolwezi are a reminder that the world’s richest copper belt still comes with political strings attached.

Frequently asked questions

Why did Congo seal Glencore’s offices in Kolwezi?

Congo’s tax agency, the DGI, sealed Kamoto Copper Company’s offices on July 9, 2026, over alleged unpaid taxes after settlement talks failed. Glencore says it disputes the claims and continues to engage with the authorities.

How much does Congo say Glencore’s unit owes?

The DGI assesses the arrears at about US$3 billion according to Actualite.cd, while some local reports cite claims of up to $6 billion. Bloomberg’s sources said the state alleges the unit owes billions of dollars.

Is copper and cobalt production at Kamoto affected?

Not so far. The raid sealed offices in Kolwezi, but production at Kamoto’s nearby mines and processing facilities has continued, according to a person familiar with the matter.

Who owns Kamoto Copper Company?

Glencore holds 70 percent of Kamoto, while Congo’s state and its mining company Gécamines control the remaining 30 percent. Orion CMC, backed by the US DFC, agreed in February to buy 40 percent of Glencore’s interest, a deal not yet closed.

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