The Gallup data show that, currently, an average of 54 percent of adults in sub-Saharan Africa make one or more long-distance payments in a given month, totaling approximately five billion transactions annually. The total volume of these flows is roughly
$760 billion, and conservatively 50 to 60 percent of the transactions are in cash (its likely closer to 70-80%). With a conservative estimate of revenues at 2 percent of volume, this results in annual revenues of about $6.6 billion from electronic payments.
Bill&Melinda Gates Foundation – Financial Services for the Poor
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