The closest thing to a carbon tax is the current system of carbon emissions trading. Which has it's fair share of criticisms as well: https://en.wikipedia.org/

The closest thing to a carbon tax is the current system of carbon emissions trading. Which has it's fair share of criticisms as well: https://en.wikipedia.org/wiki/Carbon_emission_trading https://en.wikipedia.org/wiki/Carbon_emission_trading https://en.wikipedia.org/wiki/Carbon_emission_trading#Criticisms https://en.wikipedia.org/wiki/Carbon_emission_trading#Critic... https://en.wikipedia.org/wiki/Criticism_of_the_Kyoto_Protocol#Criticism_of_Carbon_Trade https://en.wikipedia.org/wiki/Criticism_of_the_Kyoto_Protoco... Carbon emissions trading does have an impact on carbon emissions, but it also detracts from the fundamental issue at hand - overreliance on fossil fuels in key industries and the need for a fundamental shift in our infrastructure in how energy is produced/consumed - while the costs, ultimately, get deferred elsewhere e.g. individual consumers.