Since 2002 the distribution of external funding to reproductive, maternal, newborn, and child health (RMNCH) has become more equitable and better targeted at the poorest countries and those experiencing the highest mortality. The aid envelope is not large enough or well enough concentrated to close gaps in domestic government fund ing between the poorest and middle income countries. Donors and governments of low and middle income countries should increase their investments for RMNCH . Donors should further concentrate their funds on the poorest countries and those with the highest maternal, newborn, and child mortality. Investment is also needed to close serious data and methodological gaps for assessing equity of financing between and within countries