Mozambique's multi-donor budget support system is frequently highlighted as a model of good practice and one which is in keeping with the Rome Declaration on Aid Effectiveness. In order to study this model in more detail, policy staff from Trócaire and Christian Aid undertook a research trip to Mozambique to ascertain the strengths and weaknesses of the Mozambican multi-donor budget support system. This document is the product of that research trip. The purpose of this document is to inform policy development in Christian Aid and Trócaire and to look critically at the emerging agendas of donor harmonisation and budget support globally. It is intended to help identify areas that pose particular challenges - to donors, government and civil society.