The Policy Research Working Paper Series disseminates the findings of work in progress to encourage the exchange of ideas about development issues. An objective of the series is to get the findings out quickly, even if the presentations are less than fully polished. The papers carry the names of the authors and should be cited accordingly. The findings, interpretations, and conclusions expressed in this paper are entirely those of the authors. They do not necessarily represent the views of the International Bank for Reconstruction and Development/World Bank and its affiliated organizations, or those of the Executive Directors of the World Bank or the governments they represent.

The Policy Research Working Paper Series disseminates the findings of work in progress to encourage the exchange of ideas about development issues. An objective of the series is to get the findings out quickly, even if the presentations are less than fully polished. The papers carry the names of the authors and should be cited accordingly. The findings, interpretations, and conclusions expressed in this paper are entirely those of the authors. They do not necessarily represent the views of the International Bank for Reconstruction and Development/World Bank and its affiliated organizations, or those of the Executive Directors of the World Bank or the governments they represent.

Mobile financial services (MFS) are the main drivers of financial inclusion in many developing countries, where they provide low-income consumers with access to transfers, payments, and increasingly more complex products including credit, savings, and insurance. MFS channels can provide the advantages of convenient, secure, and cost-efficient product offerings to consumers. In several markets, MFS have helped to significantly increase the portion of the population with access to formal financial services. To promote both quality and diversity in MFS products, and in turn financial inclusion, it is important to ensure a competitive ecosystem that facilitates entry into the market, the development of innovative MFS products, and high-quality, value-for-money services. This article aims to provide insights into the role that effective competition and competition policy play in developing MFS, and in promoting financial inclusion, using Kenya and Tanzania as case countries.

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The Policy Research Working Paper Series disseminates the findings of work in progress to encourage the exchange of ideas about development issues. An objective of the series is to get the findings out quickly, even if the presentations are less than fully polished. The papers carry the names of the authors and should be cited accordingly. The findings, interpretations, and conclusions expressed in this paper are entirely those of the authors. They do not necessarily represent the views of the International Bank for Reconstruction and Development/World Bank and its affiliated organizations, or those of the Executive Directors of the World Bank or the governments they represent.