OPM was contracted by the World Bank to develop a sourcebook, learning course and update the World Bank online sources on TIPS to analyse Poverty and Social Impact Analyses (PSIA). This work was based on earlier work which resulted in an online sourcebook that describes good practice in the application of institutional, political and social analysis in PSIA. The sourcebook looks at lessons learned from five years of World Bank and DFID experience with PSIA (2001-2005). Our TIPS analysis recommends three levels: (1) Macro, the country and reform context; (2) Meso, policy implementation; and (3) Micro, the impact of policy reform. We took a participatory approach to TIPS throughout in order to strengthen accountability relationships in designing PSIA.