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Tax aversion makes it politically challenging to introduce Pigouvian taxes. One proposed solution to overcome this resistance is to package policies. Using an online lab experiment, we investigate whether combining a tax and a subsidy is perceived as more acceptable than the tax or the subsidy alone. The purpose of the policies is to reduce demand for a good with a negative externality to the socially optimal level. We find that support for a combination of a tax and a subsidy equals the simple average of support for the two instruments alone. Combining a tax and a subsidy therefore does not reduce tax aversion. We examine potential mechanisms behind the tax aversion. Participants believe they will receive a lower share of the tax revenue when the tax is implemented alone than when it is combined with a subsidy, i.e. the participants in the tax alone group hold more pessimistic beliefs about the tax revenue. We also find that the participants expect the tax to be more effective in reducing demand for the good with a negative externality than both the subsidy alone and the combinations of tax and subsidy. This belief does not, however, translate into support for the tax.
Andreassen et al. (Mon,) studied this question.