More than $750 million of mining revenues paid by companies to state bodies in the Democratic Republic of Congo was lost to the treasury between 2013 and 2015. Instead, the money disappeared into a dysfunctional state-owned mining company and opaque national tax agencies. There is no clarity on what this money was spent on or where it ended up, but testimony and documentation gathered by Global Witness indicates that at least some of the funds were distributed among corrupt networks linked to President Joseph Kabila’s regime. Gécamines, the state-owned company, is the main culprit in the diversion of Congo’s mining revenues from the budget...Our investigation shows how Gécamines is haemorrhaging money in suspect transactions – sometimes involving millions of dollars in cash – while simultaneously failing to make any substantial contribution to the national treasury or invest in its own mining operations. The company is saddled with well over a billion dollars of debt and it carries out almost no mining of its own, despite having once mined up to 500,000 tonnes of minerals in a year...Furthermore, each year Congo’s national tax agencies keep back a portion of mining revenues for their “own funds”, rather than transfer it to the treasury. What happens to this money is unclear. The agencies are secretive and often headed by powerful individuals with close professional or personal ties to the Prime Minister’s office or to the Presidency. The opacity around the withheld funds makes this system highly susceptible to corruption.