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The Macroeconomics of Medium-Term Aid Scaling-Up Scenarios

  • Rafael Portillo
  • Andrew Berg
  • Jan Gottschalk
  • Luis-Felipe Zanna

We develop a model to analyze the macroeconomic effects of a scaling-up of aid and assess the implications of different policy responses. The model features key structural characteristics of low-income countries, including varying degrees of public investment efficiency and a learning-by-doing (LBD) externality that captures Dutch disease effects. On the policy front, it distinguishes between spending the aid, which is controlled by the fiscal authority, and absorbing the aid - financing a higher current account deficit - which is influenced by the central bank's reserve accumulation policies. We calibrate the model to Uganda and run several experiments. We find that a policy mix that results in full spending and absorption of aid can generate temporary demand and real exchange rate appreciation pressures, but also have a positive effect on real GDP in the medium term, through higher public capital. Full spending with partial absorption, on the other hand, may stem appreciation pressures but can also induce adverse medium-term real GDP effects, through private sector crowding out. When aid is very inefficiently invested and there are strong LBD externalities, aid can be harmful, and partial absorption policies may be justified. But in this case, a welfare improving solution is to defer spending or - even better if possible - raise its efficiency.

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Paper provided by International Monetary Fund in its series IMF Working Papers with number 10/160.

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Length: 45
Date of creation: 01 Jul 2010
Date of revision:
Handle: RePEc:imf:imfwpa:10/160
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  1. Agenor, Pierre-Richard & Bayraktar, Nihal & El Aynaoui, Karim, 2005. "Roads out of poverty? assessing the links between aid, public investment, growth, and poverty reduction," Policy Research Working Paper Series 3490, The World Bank.
  2. Edward Buffie & Christopher Adam & Stephen O'Connell & Catherine Patillo, 2006. "Riding the Wave: Monetary Responses to Aid Surges in Low-Income Countries," CSAE Working Paper Series 2006-04, Centre for the Study of African Economies, University of Oxford.
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