This paper compares child poverty dynamics crossnationally using panel data from seven nations: the USA, Britain, Germany, Ireland, Spain, Hungary and Russia. As well as using standard relative poverty definitions the paper examines flows into and out of the poorest fifth of the children’s income distribution. We find significant (but not total) uniformity in patterns of income mobility and poverty dynamics across the seven countries. The key exception is Russia, where the economic transition has led to a much higher degree of mobility. Interestingly, the USA, which has the highest level of relative poverty among the rich nations, has a mobility rate which, if anything, is less than that of the other nations.