Although non-tax revenue may contribute significantly to some countries’ total GDP, the average tax/GDP ratios in low-income and lower-middle-income countries are roughly 15% and 19%, respectively – significantly lower than the OECD average of more than 35%. To finance development projects, poor and lower-middle-income countries must devise and implement tax strategies to increase domestic revenue.
尽管非税收入可能占一国GDP总量相当大的比重，但低收入和中低收入国家的平均税收/GDP比率分别在15%和19%左右，显著低于经合组织的平均水平35%。为了给发展项目融资，穷国和中低收入国家必须设计和实施增加国内收入的税收战略。