|dc.description.abstract||This objective of this paper was to identify common program components of state-level financial purchase incentives for plug-in electric vehicles (PEVs) that are most closely linked with “success,” which is determined by referring to the number of PEVs registered in the state, normalized based on population (per 1,000 people) in 2017. While there is no single factor that drives PEV uptake for non-fleet retail customers, financial purchase incentives are a key component. We evaluated PEV financial purchase incentive program components to offer recommendations to states on successful program elements. Through a review of active state PEV purchase incentives in California, Colorado, Connecticut, Massachusetts, New York, and Washington, this project developed a list of recommendations for key components of incentive programs to support PEVs. We offered six recommendations to consider when designing PEV incentive programs. These recommendations may inform states developing PEV financial purchase incentive programs to expand the PEV market. This project is significant as many PEVs provide a promising pathway to reduce petroleum consumption, GHG emissions, and air pollution. Further, an evaluation of state-level incentive programs is critical as more weight is placed on states’ efforts address these challenges.