The Poverty-Environment Initiative (PEI) is a global programme that supports country-led efforts to mainstream poverty-environment linkages into national development and sub-national development planning, from policy-making to budgeting, implementation and monitoring. With both financial and technical support, PEI assists government decision-makers and a wide-range of other stakeholders to manage the environment in a way that improves livelihoods and leads to sustainable growth. The PEI works with key government partners to raise awareness, influence policy making and strengthen the mainstreaming of poverty-environment into budget processes, sector programmes and sub-national planning. The overall aim is to bring about lasting institutional change and to catalyse key actors to increase investment in pro-poor environmental and natural resource management.