The International Monetary Fund (IMF) has warned that persistent gaps between government budget targets and actual fiscal outcomes are becoming a structural threat to economic stability, investor confidence and public trust across sub-Saharan Africa, according to a new departmental paper.
The study, authored by IMF economists Pablo Lopez Murphy, Can Sever, Felix F. Simione and Qianqian Zhang, examined fiscal performance across 39 sub-Saharan African countries between 2021 and 2024. It found that budget deviations are no longer isolated failures but deeply entrenched patterns rooted in weak institutions, political pressures and systematically optimistic revenue forecasts.
Fiscal deficits across the region consistently exceed initial projections. Governments routinely underestimate spending on wages, transfers and public operations while overstating expected revenues. The problem sharpens during periods of strong economic performance: rather than building fiscal buffers, many governments expand spending aggressively when revenues surprise to the upside, locking in procyclical behaviour that amplifies vulnerability when conditions weaken. Interest payment obligations are also routinely underestimated, widening financing gaps further.
Capital expenditure absorbs the heaviest adjustment whenever fiscal stress emerges. Roads, hospitals, schools and utility projects are delayed or abandoned once revenue targets slip, deepening infrastructure deficits in a region that already carries some of the world’s largest development backlogs.
Election cycles are identified as a key trigger for fiscal slippage, with governments expanding spending beyond approved budgets under political pressure, generating wider deficits and unexpected borrowing after votes are cast. Countries with fiscal rules, independent fiscal councils and tighter expenditure controls recorded significantly smaller deviations. IMF-supported programmes were also associated with improved budget discipline, a finding directly relevant to Ghana and other African nations currently operating under Fund-backed reform agreements.
The paper warns that declining foreign aid flows, elevated global borrowing costs, volatile commodity markets and rising demands for social and infrastructure spending are narrowing the margin for fiscal slippage further.
The researchers recommend binding expenditure ceilings, stronger legislative oversight, tighter controls on election-year spending reallocations and explicit protection for capital budgets during periods of fiscal stress. Their central conclusion is direct: governments should not aim for perfect budget execution in an uncertain world, but they must prevent fiscal slippages from becoming normalised, because once that trust is lost, rebuilding it is far harder and far more expensive.
