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Zambia re-instituted agricultural input subsidies under the name Fertilizer Support Programme,later renamed Farmer Input Support Programme, as one of its Poverty Reduction Strategies in2002.Since the reintroduction of this subsidy programme, several studies evaluating itsperformance have been conducted.However, the studies that have attempted to quantify theeffects of the programme on incomes have focused either on the fertilizer or the seed componentbut not on both which constitute the FISP pack, making it difficult to determine what changes infarmers incomes can be attributed to FISP.Using Propensity Score Matching with panel datafrom 305 randomly surveyed FISF beneficiary and-non-beneficiary households in Choma andMonze districts of Zambias Southern province, I estimate the average treatment effect of a FISPpack on households revenue from maize.The results provide evidence, that FISP has a positiveimpact on beneficiary households income.FISP is estimated to have increased household annualincome from maize sales by 30.8％ on average for 2013/14 and 2014/15 crop seasons, and totalhousehold income by 13.9％.This increment is much higher than estimations from earlier studies;however, it is not large enough to lift households above the poverty line.Hence, although FISP isachieving its objective of increasing income among small-scale farmers, it is not attaining itspoverty reduction objective.