The Community Rating System (CRS) was introduced to encourage flood mitigation and increase National Flood Insurance Program (NFIP) participation via premium discounts. It is not clear, however, how additional mitigation and premium discounts affect NFIP participation and damage claims payments. We employ matching methods and log-linear regression framework to estimate the impact of CRS participation (versus non-participation) on outcomes. We also analyze the effect of individual CRS mitigation activities on outcomes. We do so while controlling for key geospatial, socioeconomic, and time effects. Results show a positive and significant effect of CRS participation on NFIP participation, but no significant effect on damage claims payments. Outreach and flood data maintenance activities have positive effect on NFIP participation while floodplain mapping and flood protection have negative effect. Flood protection information and storm water management have negative effect on damage claims payments while floodplain management planning and acquisition and relocation have positive effect.