on average developing countries in asia and the pacific collect per cent of gdp from cit which is more than the oecd average of per cent of gdp however average pit collection in the region is merely per cent of gdp compared with per cent in oecd countries however in an increasingly integrated world where capital has greater mobility there is growing pressure on the tax due to tax competition and the risk that cit burden could be shifted to labour harberger the united states tax reform is a latest initiative in this direction however past experience also shows that pit only performs if it is welldesigned and welladministered and has sufficient coverage bird and zolt