Official development assistance had, for decades, been a key source of financing for many countries in sub-Saharan Africa. That support is now shrinking rapidly, according to a new IMF report. The era of predictable and abundant foreign aid is gradually fading, making it imperative for governments across the continent to strengthen domestic revenue mobilisation, improve public spending, and build resilient institutions capable of sustaining growth and essential services.
The report, titled “Aid Is Falling Fast. What Can African Countries Do?”, examined developments across 28 African countries. It concludes that the shift which began in 2025 is unlikely to be temporary, reflecting a broader reconfiguration of development finance shaped by tighter donor budgets and changing priorities.
The Size of the Gap
Sub-Saharan Africa needs at least an additional $245 billion per year in financing, with national savings subdued and external financing dwindling, making it imperative to explore innovative ways to unlock domestic resources. At the continental level, the African Development Bank’s 2026 African Economic Outlook puts the figure even higher, identifying an annual financing gap exceeding $1.3 trillion to meet the Sustainable Development Goals, attributed to low domestic resource mobilisation, weak financial intermediation, and tightening external financing conditions.
The good news, according to the AfDB, is that the gap is not purely a resource problem. With appropriate reforms, Africa could unlock up to $1.43 trillion annually through improved revenue collection, more efficient public investment, staunching illicit financial flows and corruption, deeper capital markets, expanded public-private partnerships, diaspora financing, and better use of natural capital, including an estimated $469 billion in additional annual revenues from stronger tax mobilisation alone.
Where the Money Is Hiding
Africa’s average tax-to-GDP ratio sits at just 16 per cent, well below the 34 per cent average for OECD countries, though with significant variation across the continent. Governance reforms, including anti-corruption measures, transparency, and stronger revenue administration, could raise revenues by 3.9 percentage points, mobilising almost $94 billion on average over five years. Separately, UNCTAD estimates Africa loses around $90 billion annually through illicit financial flows, an argument for coordinated action on multinational tax avoidance and fairer global tax rules.
The continent’s natural resource endowment, valued at over $6 trillion in 2020, offers the largest untapped potential and the most promising pathway to mobilise domestic financing at scale. While external financial flows, remittances, aid, and FDI, offer important support for Africa’s development, they cannot substitute for strong domestic institutions and revenue mobilisation.
What African Leaders Are Saying
Following the launch of the AfDB’s African Economic Outlook 2026 at the Bank Group’s annual meetings in Brazzaville, senior African and European policymakers called for strategic economic reforms to attract investment, strengthen domestic revenue mobilisation, and deepen regional integration.
Launching the report, AfDB President Dr. Sidi Ould Tah struck a cautiously optimistic tone: “We must remain clear-headed and vigilant, both to consolidate the current performance of our economies and to address the structural challenges of financing our development.”
The IMF’s prescription is similarly pragmatic rather than alarmist. Blended finance, using public funds to mobilise private investment, can help expand financing for infrastructure, energy, and agriculture, though it is not a substitute for aid: it is harder to scale, more complex, and can add to debt if poorly designed. With aid less predictable, resilience increasingly depends on domestic institutions, mobilising more revenue, improving spending efficiency, and strengthening policy design and service delivery, capacity that aid has often provided but that African institutions will now need to build themselves.
The direction of travel is no longer in question. Whether the continent can build that capacity fast enough to absorb the financing shock now under way is the test the next several years will answer.
Africa Presents is a Pan-African digital magazine and monthly publication covering politics, business, economy, culture, tech, and the stories shaping Africa and its diaspora. Visit africapresents.com and follow @AfricaPresents for daily coverage and monthly themed magazine editions.
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