Welfare Implications of a Carbon Tax in a Long-Distance Passenger Market

Cherbonnier, Frédéric, Marc Ivaldi, Catherine Muller-Vibes and Karine Van Der Straeten

No 20515, CEPR Discussion Papers from Centre for Economic Policy Research

Abstract: This study estimates the impact of a carbon tax on welfare, considering modal shifts to less carbon-intensive transport, as well as its effects on environmental and fiscal externalities. We calibrate a modal competition model using logit demand functions for a specific long-distance connection in France and simulate the introduction of a Pigouvian tax. Our key findings are: First, a €190/tCO2 carbon tax is nearly welfare-neutral but significantly detrimental to consumer surplus; Second, rail price regulation has the side effect of reducing greenhouse gas emissions by subsidizing the cleanest transport mode; Third, the widespread adoption of electric vehicles enhances overall welfare without significantly harming consumer surplus.

JEL-codes: D43 L91 Q51 R40 (search for similar items in EconPapers)
Date: 2025-08
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