Foreign Aid and Fiscal Response: Does Aid Disaggregation Matter? —The present paper constitutes a new approach in the aid-effectiveness literature in two important respects. Firstly, it develops and then tests a model of foreign aid and fiscal response, which, for the first time in the aid-effectiveness literature, embraces the aiddisaggregation issue; we do this by disaggregating aid flows into three main components, namely programme aid, project aid and technical assistance, and by subsequently estimating our model for two countries, India and Kenya. Secondly, on the modelling front, we improve on earlier work in this area by using an appropriate specification for the recipient-country government’s welfare function, with significant positive implications for the empirical findings obtained. This new approach adopted in the paper and the empirical results obtained may have important implications for a better understanding of the fiscal impact of aid in aid-recipient countries.