In this paper, we examine the mean reverting behaviour of fiscal deficit by analysing the fiscal position of 24 developing countries. Using annual data over the period 1970-2003 and the series-specific panel unit root test developed by Breuer et al. (Oxford Bulletin of Economics and Statistics, Vol. 64 (2002), pp. 527-546), we found the budget process for most developing countries fails to satisfy the strong-form sustainability condition. Further investigation shows the budget process for a majority of the countries is on a sustainable path (weak form) when a one-time, structural break is allowed in the model. Therefore, our empirical results suggest that the budget process in most of the sample countries is in accordance with the intertemporal budget constraint.