Using household survey data gleaned from Ghana, we carried out a microeconometric analysis of the relationship between mobile money (m-money) and multidimensional well-being. A key feature of this paper is the computation of a well-being index, incorporating important household welfare dimensions including health, education, and wealth, thus allowing an examination of the link between m-money and well-being from a multidimensional perspective. Using instrumental variable probit models with phone ownership and public sector employment as instruments, we find that although access to m-money is important it is its usage that has a profound well-being effect. We also explore alternative specifications of the models in which access to, and usage of, m-money explains the variations in the individual well-being components, which also relate to the Sustainable Development Goals. The results from these alternative specifications suggest that there are significant welfare disparities between those who just have access to m-money and those who use it frequently. The policy implication of this finding is that measures that encourage m-money usage would not only promote At least since the early 2000s, developing countries (particularly in Africa) had been grappling with how to reach out to the unbanked and underbanked population, who are usually the poor and often marginalized groups in society (the youth and women). Providing banking facilities to poor individuals is expensive due to the investments required to establish functioning bank branches (Ahmad et al., 2020;Beck et al., 2007;Narain, 2009). The high transaction costs associated with reaching out to this segment of the population form the main supply-side constraints to financial inclusion. Admittedly, this problem is particularly more serious in Africa where good infrastructure to support financial outreach is lacking, which widens the financial gap in the region, even among the developing economies (Beck et al., 2007).The rapid growth of mobile phone penetration in Africa over the past decade-from 28.5 phones per 100 inhabitants in 2007 to 64.8 phones per 100 inhabitants in 2013-has enabled the introduction of mobile money (m-money) on the continent. It was first introduced in South Africa in 2006, followed by the continent's most successful m-money, M-PESA in Kenya (Ahmad et al., 2020;Suri & Jack, 2016). M-money has become ubiquitous in Africa, spreading from East to West Africa and beyond, and it is emerging as a game changer in many African countries. This is particularly welcoming as it is considered as an important financial innovation that can be leveraged to break barriers to financial inclusion, especially in rural areas (Munyegera & Matsumoto, 2016).Evidently, financial inclusion has been improving in Africa since the advent of the m-money. For example, in Ghana, financial inclusion increased by 17% between 2014 and 2017 according to the Global Findex surveys (Demirguc-Kunt et al., 2018). 1 This improvement was largely attributed to the increase in the numb...