The Future of Cash in a Continent Going Digital

LAGOS — Despite the dramatic growth of mobile money, digital banking and electronic payment infrastructure across Africa over the past decade, cash remains the dominant medium of exchange across most of the continent. In Nigeria, Africa’s largest economy, cash accounts for an overwhelming share of retail transactions by volume even as digital payment values have grown substantially. Across rural sub-Saharan Africa, cash is often the only practical payment medium available, given the connectivity, agent network and infrastructure gaps that digital payments have not yet bridged. Cash’s persistence is not simply inertia — it reflects structural features of African economies and households that any serious account of the continent’s payment future must engage with honestly rather than dismiss as a problem awaiting technological solution.

Nigeria’s 2022 currency redesign episode provided perhaps the most instructive recent case study in the economics and politics of cash in Africa. The Central Bank of Nigeria’s decision to redesign high-denomination naira notes and impose tight limits on cash withdrawals — explicitly framed as a policy to accelerate digital payment adoption and reduce the informal economy’s cash reliance — created a severe cash shortage that disrupted economic activity across the country, from urban markets to rural communities where alternatives to physical currency were genuinely unavailable. Long queues at ATMs, empty machines, businesses unable to make change and communities unable to pay for food and transport illustrated in real time the degree to which Nigeria’s economy, despite its large and growing digital payment sector, remained structurally dependent on physical currency in ways that abrupt restriction could not simply override. The episode was eventually reversed by court order, but it generated lasting debate about the pace, sequencing and inclusivity of African digital payment transition.

The economics of cash management and distribution are complex and often invisible to digital payment advocates. Printing, distributing, handling and eventually retiring physical currency involves substantial costs for central banks, commercial banks and cash management companies, costs that are often cited as justification for accelerating digital adoption. But cash also provides genuine economic value that its digital alternatives do not fully replicate: it is universally accepted regardless of network connectivity or device ownership; it is anonymous in a way that digital transactions are not; it provides a payment medium that works without battery power or infrastructure; and it creates no counterparty or platform risk — a naira note held in your hand is a liability of the central bank, not of a commercial bank or a telecom operator whose financial health you cannot directly verify.

For households managing precarious finances in informal economies, these properties of cash are not trivial conveniences but genuine necessities. A market trader who needs to make change for a customer purchasing items worth a few hundred naira cannot rely on a customer having a functional phone, adequate data, a registered mobile money account and compatible bank app at the point of transaction. A seasonal farmer receiving a crop payment from a buyer who arrives at the farm with physical currency has no practical way to insist on digital settlement if the infrastructure for it does not exist in that location. The persistence of cash in these contexts is not a failure of digital advocacy or consumer financial literacy but a rational response to the actual payment infrastructure available in those economic settings.

The geographic distribution of cash usage patterns matters enormously for any assessment of cash’s future role. Urban-rural divergence is sharp across most African countries: major cities in Nigeria, Kenya, South Africa, Ghana and elsewhere show digital payment patterns that increasingly resemble those of middle-income country peers, with mobile app payments, card transactions and mobile money accounting for growing shares of urban commerce. The same countries’ rural areas show very different patterns, with cash dominance much more entrenched and the practical barriers to digital adoption — connectivity gaps, agent network thinness, lower average income levels that reduce the transaction size that makes digital payment infrastructure economics viable — more formidable. Any projection of African payment digitization that is calibrated to urban experience without adequate adjustment for rural realities will systematically overstate the pace of the transition at the country level.

Informal settlement residents in major African cities occupy a particular position in the cash-digital transition, often geographically located within mobile network coverage areas and holding mobile phones but operating in economic contexts where cash remains the norm in their immediate community even if digital payments are common a few kilometers away in wealthier neighborhoods. The density of informal market activity, the prevalence of sub-cent transactions, the limited merchant digital payment infrastructure in informal retail, and the social dynamics of communities where cash-based economic relationships are deeply embedded in community trust structures all create friction against digital adoption that is qualitatively different from simple lack of access.

Central banks across the continent have approached the cash-digital transition with varying degrees of urgency and varying views on how actively monetary authorities should push the pace of digitization relative to allowing market forces to drive adoption. South Africa’s Reserve Bank has generally taken a market-facilitation approach, investing in payment infrastructure and interoperability standards while leaving adoption pace largely to commercial drivers. Nigeria’s Central Bank, by contrast, has periodically attempted more directive interventions — including the currency redesign episode — motivated partly by financial inclusion ambitions and partly by the monetary policy and fiscal benefits of reducing cash in circulation. East African central banks have benefited from the commercial success of mobile money in reducing the burden on formal central bank currency management without requiring active policy pressure to shift behavior.

The anti-money-laundering and tax compliance dimensions of cash usage have driven much of the policy enthusiasm for payment digitization at the government level, independently of financial inclusion motivations. Cash transactions leave no audit trail, making them the preferred medium for tax evasion, informal economy activity that escapes the statistical GDP measurement, bribery and, in the most serious cases, money laundering. Governments that can shift economic activity from cash to digital payment rails gain both improved tax visibility — digital transactions are inherently more traceable than cash — and potential enforcement leverage. This fiscal motivation for digital payment promotion is economically legitimate and politically powerful, but it needs to be balanced against the legitimate privacy interests of households whose financial transactions conducted on digital platforms become visible to governments in ways that cash use does not permit.

The role of agent networks in the cash-digital interface is frequently underestimated. For most African users of mobile money or digital banking, the transition between the physical and digital worlds — converting cash into digital value and converting digital value back into cash — still requires interaction with a human agent who handles the physical currency. The agent network is not a transitional feature of digital payment infrastructure that will eventually be superseded by fully cashless commerce; it is a structural component of how digital finance works in cash-dependent economies, and its quality, density and reliability determine the effective access to digital payment services for a large share of users. Investment in agent network development, agent liquidity management and agent supervision is therefore as important to the success of Africa’s digital payment transition as the app and platform layer that receives more attention.

Looking at the realistic trajectory of cash in African economies over the next decade, the likely outcome is not replacement but coexistence: digital payments continuing to grow as a share of transaction value, particularly for higher-value and recurring transactions in more economically developed contexts, while cash retains a persistent and important role in rural economies, informal markets and low-income urban communities where digital alternatives remain functionally inadequate or economically inaccessible. Managing that coexistence well — ensuring digital payment infrastructure is genuinely inclusive while maintaining adequate physical cash infrastructure for those who need it — is a more nuanced policy challenge than simple advocacy for cashless transition, and one that most African monetary authorities are navigating with varying degrees of success.

Merchant acceptance infrastructure represents a critical but often overlooked dimension of the cash-digital transition. Consumer willingness to pay digitally is necessary but not sufficient for digital payment adoption; merchants must also be willing and able to accept digital payments, which requires point-of-sale devices or QR code infrastructure, reliable connectivity at the transaction point, and confidence that digital receipts will be settled promptly and at acceptable cost. Merchant discount rates — the fees that merchants pay to accept card or mobile money payments — have historically been one of the most significant barriers to merchant adoption, particularly for small traders operating at thin margins. Several African markets have seen competition authorities and central banks push for reductions in merchant discount rates to accelerate acceptance infrastructure rollout, with mixed results depending on the competitive dynamics of each national payment market. Where merchant discount fees remain high and acceptance remains limited, even consumers with fully functional digital payment access revert to cash for most everyday transactions because the merchant infrastructure to use digital payment does not exist at the point of sale.