This paper examines the impact of foreign aid on public sector fiscal behaviour in Co^te d’Ivoire. A special interest is the relationship between aid, debt servicing and debt, given that Coˆte d’Ivoire is a highly indebted country. The theoretical model employed differs from those of previous studies by highlighting the interaction between debt servicing and the other fiscal variables, providing information on aid and fiscal behaviour that its predecessors cannot. This model is estimated using 1975–99 time series data. Two key findings emerge: (i) the majority of aid inflows are allocated to expenditure on debt servicing; and (ii) these inflows are associated with increases in the level of public debt.