Guinea is an important producer of bauxite, diamonds, and gold, with sizeable untapped iron ore reserves. The mining sector contributes significantly to government revenues, mainly through corporate income tax and mineral royalties. As of 2021, Guinea holds a “satisfactory” grade in the Resource Governance Index.

Main Mining Products

  • Bauxite
  • Diamonds
  • Gold
  • Iron ore

What Are We Doing in Guinea?

In December 2019, we began a Deep Dive engagement with Guinea to provide technical assistance to address tax base erosion and profit shifting (BEPS) risks in the mining sector. The first phase was completed in 2020. We paused our program in 2021 and started a second phase in May 2022.

Legal and Policy Support

During the first phase of the program, the main items included two recommendations: (i) to align the transfer pricing documentation rules with the Organisation for Economic Co-operation and Development’s Action 13 (country-by-country reporting) and improve transfer pricing documentation and (ii) to support the government in addressing bauxite pricing in related-party transactions. The second phase of the program will further increase administrative capacity in addressing transfer pricing risks in the mining sector, focusing on bauxite pricing. 


The program includes support for the mining and budget ministries to develop a long-term approach to bauxite pricing. Our proposed capacity-building activities will consist of trainings on transfer pricing.

Audit Support

A Tax Inspectors Without Borders program began in January 2021 to support auditors from the tax authority.