This paper investigates public opinion on the Swiss CO2 levy and its 2020 revision by using a discrete choice experiment answered by a sample of 586 respondents living in Switzerland. The experiment is designed to elicit citizen preferences among various taxation attributes and is followed by a referendum voting experiment on various CO2 levy proposals. Based on latent class modeling approaches, we find that the population is composed by two distinct but relatively uniform preference profiles: the Pro-tax reform and the Anti-tax reform. Respondents belonging to the first group tend to favor higher carbon tax rates and a redistribution of proceeds benefiting low-income individuals, whereas those in the second group prefer status quo, i.e. lower rates and a uniform redistribution of proceeds across all taxpayers. Findings from the voting experiment point to a general support among the Pro-reform, but an uncertain approval from the Anti-reform group.
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