Carbon tax

Purpose

Carbon dioxide is one of several heat-trapping greenhouse gases (others include methane and water vapor) emitted as a result of human activities. The scientific consensus is that human-induced greenhouse gas emissions are the primary cause of climate change, and that carbon dioxide is the most important of the anthropogenic greenhouse gases. Worldwide, 27 billion tonnes of carbon dioxide are produced by human activity annually. The physical effect of in the atmosphere can be measured as a change in the Earth-atmosphere system's energy balancethe radiative forcing of .

Different greenhouse gases have different physical properties: the global warming potential is an internationally accepted scale of equivalence for other greenhouse gases in units of tonnes of carbon dioxide equivalent. Carbon taxes are designed to reduce greenhouse gas emissions by increasing prices of the fossil fuels that emit them when burned. This both decreases demand for goods and services that produce high emissions and incentivizes making them less carbon-intensive.

Economic theory

History and Rationale

A carbon tax is a form of pollution tax. David Gordon Wilson first proposed this type of tax in 1973. Unlike classic command and control regulations, which explicitly limit or prohibit emissions by each individual polluter, a carbon tax aims to allow market forces to determine the most efficient way to reduce pollution. A carbon tax is an indirect tax—a tax on a transaction—as opposed to a direct tax, which taxes income. Carbon taxes are price instruments since they set a price rather than an emission limit.

In addition to creating incentives for energy conservation, a carbon tax puts renewable energy such as wind, solar and geothermal on a more competitive footing. In economic theory, pollution is considered a negative externality, a negative effect on a third party not directly involved in a transaction, and is a type of market failure. To confront the issue, economist Arthur Pigou proposed taxing the goods (in this case hydrocarbon fuels), that were the source of the externality () so as to accurately reflect the cost of the goods to society, thereby internalizing the production costs. A tax on a negative externality is called a Pigovian tax, which should equal the cost.

Within Pigou's framework, the changes involved are marginal, and the size of the externality is assumed to be small enough not to distort the economy. Climate change is claimed to result in catastrophe (non-marginal) changes. "Non-marginal" means that the impact could significantly reduce the growth rate in income and welfare. The amount of resources that should be devoted to climate change mitigation is controversial. Policies designed to reduce carbon emissions could have a non-marginal impact, but are asserted to not be catastrophic.

Design

The design of a carbon tax involves two primary factors: the level of the tax, and the use of the revenue. The former is based on the social cost of carbon (SCC), which attempts to calculate the numeric cost of the externalities of carbon pollution. The precise number is the subject of debate in environmental and policy circles. A higher SCC corresponds with a higher evaluation of the costs of carbon pollution on society. Stanford University scientists have estimated the social cost of carbon to be upwards of $200 per ton. More conservative estimates pin the cost at around $50.

The use of the revenue is another subject of debate in carbon tax proposals. A government may use revenue to increase its discretionary spending, or address deficits. However, such proposals often run the risk of being regressive, and sparking backlash among the public due to an increased cost of energy associated with such taxes. To avoid this and increase the popularity of a carbon tax, a government may make the carbon tax revenue-neutral. This can be done by reducing income tax proportionate to the level of the carbon tax, or by returning carbon tax revenues to citizens as a dividend.

Carbon leakage

Carbon leakage happens when the regulation of emissions in one country/sector pushes those emissions to other places with less regulation. Leakage effects can be both negative (i.e., increasing the effectiveness of reducing overall emissions) and positive (reducing the effectiveness of reducing overall emissions). Negative leakages, which are desirable, can be referred to as "spill-over".

According to one study, short-term leakage effects need to be judged against long-term effects. A policy that, for example, establishes carbon taxes only in developed countries might leak emissions to developing countries. However, a desirable negative leakage could occur due to reduced demand for coal, oil, and gas in developed countries, lowering prices. This could allow developing countries to replace coal with oil or gas, lowering emissions. In the long-run, however, if less polluting technologies are delayed, this substitution might have no long-term benefit. Carbon leakage is central to climate policy, given the 2030 Energy and Climate Framework and the review of the European Union's third carbon leakage list.

Carbon tariff

Impacts

Positive impacts

Research shows that carbon taxes effectively reduce greenhouse gas emissions. Most economists assert that carbon taxes are the most efficient and effective way to curb climate change, with the least adverse economic effects. One study found that Sweden's carbon tax successfully reduced carbon dioxide emissions from transport by 11%. A 2015 British Columbia study found that the taxes reduced greenhouse gas emissions by 5–15% while having negligible overall economic effects. A 2017 British Columbia study found that industries on the whole benefited from the tax and "small but statistically significant 0.74 percent annual increases in employment" but that carbon-intensive and trade-sensitive industries were adversely affected. A 2020 study of carbon taxes in wealthy democracies showed that carbon taxes had not limited economic growth. Carbon taxes also appear to not adversely affect employment or GDP growth in Europe. Their economic impact ranges from zero to modest positive.

Negative impacts and trade-offs

A number of studies have found that in the absence of an increase in social benefits and tax credits, a carbon tax would hit poor households harder than rich households. Gilbert E. Metcalf disputed that carbon taxes would be regressive in the US. Carbon taxes can increase electricity prices. There is a debate about the relation between carbon pricing (like carbon emission trading and carbon tax) and climate justice. Carbon pricing can be adjusted to some principles of climate justice like polluters pay. Many proponents of climate justice object to carbon pricing. To close the gap between the two concepts, carbon pricing could put a cap on emissions, remove pollution from underserved communities, and justly divide revenues.

Support and opposition

Since carbon taxation was first proposed, numerous economists have described its strengths as a means of reducing CO2 pollution. This tax has been praised as "a far better way to control pollution than the present method of specific regulation." It has also been lauded for its market based simplicity. This includes a description as "the most efficient way to guide the decisions of producers and consumers", since "carbon emissions have an 'unpriced' societal cost in terms of their deleterious effects on the earth's climate."

Since 2019 over 3,500 U.S. economists have signed The Economists' Statement on Carbon Dividends. This statement describes the benefits of a U.S. carbon tax along with suggestions for how it could be developed. One recommendation is to return revenues generated by a tax to the general public. The statement was originally signed by 45 Nobel Prize winning economists, former chairs of the Federal Reserve, former chairs of the Council of Economic Advisers, and former secretaries of the Treasury Department. It has been recognized as a historic example of consensus amongst economists. Ben Ho, professor of economics at Vassar College, has argued that "while carbon taxes are part of the optimal portfolio of policies to fight climate change, they are not the most important part."

Carbon taxes have been opposed by a substantial proportion of the public. They have also been rejected in several elections, and in some cases reversed as opposition increased. One response has been to specifically allocate carbon tax revenues back to the public in order to garner support. Citizens' Climate Lobby is an international organization with over 500 chapters. It advocates for carbon tax legislation in the form of a progressive fee and dividend structure. NASA climatologist James E. Hansen has also spoken in favor of a revenue neutral carbon fee.

Public perception

In some instances knowledge about how carbon tax revenues are used can affect public support. Dedicating revenues to climate projects and compensating low income housing have been found to be popular uses of revenue. However, providing information about specific revenue uses in countries that have implemented carbon taxes has been shown to have limited effectiveness in increasing public support. A 2021 poll conducted by GlobeScan on 31 countries and territories found that 62 percent on average are supportive of a carbon tax, while only 33 percent are opposed to a carbon tax. In 28 of the 31 countries and territories listed in the poll, a majority of their populations are supportive of a carbon tax.

Alternatives

Carbon emission trading

Main article: Carbon emission trading

Carbon emission trading (also called cap and trade) is another approach. Emission levels are limited and emission permits traded among emitters. The permits can be issued via government auctions or offered without charge based on existing emissions (grandfathering). Auctions raise revenues that can be used to reduce other taxes or to fund government programs. Variations include setting price-floor and/or price-ceiling for permits. A carbon tax can be combined with trading. A cap with grandfathered permits can have an efficiency advantage since it applies to all industries. Cap and trade provides an equal incentive for all producers at the margin to reduce their emissions. This is an advantage over a tax that exempts or has reduced rates for certain sectors.

Both carbon taxes and trading systems aim to reduce emissions by creating a price for emitting . In the absence of uncertainty both systems will result in the efficient market quantity and price of . When the environmental damage and therefore the appropriate tax of each unit of cannot be accurately calculated, a permit system may be more advantageous. In the case of uncertainty regarding the costs of abatement for firms, a tax is preferable. Permit systems regulate total emissions. In practice the limit has often been set so high that permit prices are not significant. In the first phase of the European Union Emissions Trading System, firms reduced their emissions to their allotted quantity without the purchase of any additional permits. This drove permit prices to nearly zero two years later, crashing the system and requiring reforms that would eventually appear in EUETS Phase 3.

The distinction between carbon taxes and permit systems can get blurred when hybrid systems are allowed. A hybrid sets limits on price movements, potentially softening the cap. When the price gets too high, the issuing authority issues additional permits at that price. A price floor may be breached when emissions are so low that no one needs to buy a permit. Economist Gilbert Metcalf has proposed such a system, the Emissions Assurance Mechanism, and the idea, in principle, has been adopted by the Climate Leadership Council. James E. Hansen argued in 2009 that emissions trading would only make money for banks and hedge funds and allow business-as-usual for the chief carbon-emitting industries.

Carbon offsets and credits

Other types of taxes

Two related taxes are emissions taxes and energy taxes. An emissions tax on greenhouse gas emissions requires individual emitters to pay a fee, charge, or tax for every tonne of greenhouse gas, while an energy tax is applied to the fuels themselves. In terms of climate change mitigation, a carbon tax is not a perfect substitute for an emissions tax. For example, a carbon tax encourages reduced fuel use, but it does not encourage emissions reduction such as carbon capture and storage. Energy taxes increase the price of energy regardless of emissions.

An ad valorem energy tax is levied according to the energy content of a fuel or the value of an energy product, which may or may not be consistent with the emitted greenhouse gas amounts and their respective global warming potentials. Studies indicate that to reduce emissions by a certain amount, ad valorem energy taxes would be more costly than carbon taxes. However, although greenhouse gas emissions are an externality, using energy services may result in other negative externalities, e.g., air pollution not covered by the carbon tax (such as ammonia or fine particles). A combined carbon-energy tax may therefore be better at reducing air pollution than a carbon tax alone.

Any of these taxes can be combined with a rebate, where the money collected by the tax is returned to qualifying parties, taxing heavy emitters and subsidizing those that emit less carbon. Because carbon taxes only target carbon dioxide, they do not target other greenhouse gasses, such as methane, which have a greater warming potential.

Petroleum (gasoline, diesel, jet fuel) taxes

Many countries tax fuel directly; for example, the UK imposes a hydrocarbon oil duty directly on vehicle hydrocarbon oils, including petrol and diesel fuel. While a direct tax sends a clear signal to the consumer, its efficiency at influencing consumers' fuel use has been challenged for reasons including:

• Possible delays of a decade or more as inefficient vehicles are replaced by newer models and the older models filter through the fleet.
• Political pressures that deter policymakers from increasing taxes.
• Limited relationship between consumer decisions on fuel economy and fuel prices. Other efforts, such as fuel efficiency standards, or changing income tax rules on taxable benefits, may be more effective.
• The historical use of fuel taxes as a source of general revenue, given fuel's low price elasticity, which allows higher rates without reducing fuel volumes. In these circumstances, the policy rational may be unclear.

Vehicle fuel taxes may reduce the "rebound effect" that occurs when vehicle efficiency improves. Consumers may make additional journeys or purchase heavier and more powerful vehicles, offsetting the efficiency gains.

Comparison of alternatives

A 2018 survey of leading economists found that 58% of the surveyed economists agreed with the assertion, "Carbon taxes are a better way to implement climate policy than cap-and-trade," 31% stated that they had no opinion or that it was uncertain, but none of the respondents disagreed.

In a review study in 1996 the authors concluded that the choice between an international quota (cap) system, or an international carbon tax, remained ambiguous. Another study in 2012 compared a carbon tax, emissions trading, and command-and-control regulation at the industry level, concluding that market-based mechanisms would perform better than emission standards in achieving emission targets without affecting industrial production.

Implementation

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Both energy and carbon taxes have been implemented in response to commitments under the United Nations Framework Convention on Climate Change. In most cases the tax is implemented in combination with exemptions. Indirect carbon prices, such as fuel taxes, are much more common than carbon taxes*.* In 2021, OECD reported that 67 of the 71 countries it assessed had some form of fuel tax. Only 39 had carbon taxes or ETSs. However, the use of carbon taxes is growing more quickly. In addition, several countries plan to further strengthen existing carbon taxes in the coming years, including Singapore, Canada and South Africa.

Current carbon price policies, including carbon taxes, are still considered insufficient to create the kinds of changes in emissions that would be consistent with Paris Agreement goals. The International Monetary Fund, OECD, and others have stated that current fossil fuel prices generally fail to reflect environmental impacts.

Europe

In Europe, many countries have imposed energy taxes or energy taxes based partly on carbon content. These include Denmark, Finland, Germany, Ireland, Italy, the Netherlands, Norway, Slovenia, Sweden, Switzerland, and the UK. None of these countries have been able to introduce a uniform carbon tax for fuels in all sectors. Denmark is the first country to include livestock emissions in their carbon tax system.

During the 1990s, a carbon/energy tax was proposed at the EU level but failed due to industrial lobbying. In 2010, the European Commission considered implementing a pan-European minimum tax on pollution permits purchased under the European Union Greenhouse Gas Emissions Trading Scheme (EU ETS) in which the proposed new tax would be calculated in terms of carbon content. The suggested rate of €4 to €30 per tonne of .

Americas

Costa Rica

In 1997, Costa Rica imposed a 3.5 percent carbon tax on hydrocarbon fuels. A portion of the proceeds go to the "Payment for Environmental Services" (PSA) program which gives incentives to property owners to practice sustainable development and forest conservation. Approximately 11% of Costa Rica's national territory is protected by the plan. The program now pays out roughly $15 million a year to around 8,000 property owners.

Canada

Main article: Carbon pricing in Canada, Quebec carbon tax, British Columbia Carbon Tax

In the 2008 Canadian federal election, a carbon tax proposed by Liberal Party leader Stéphane Dion, known as the Green Shift, became a central issue. It would have been revenue-neutral, balancing increased taxation on carbon with rebates. However, it proved to be unpopular and contributed to the Liberal Party's defeat, earning the lowest vote share since Confederation. The Conservative party won the election by promising to "develop and implement a North American-wide cap-and-trade system for greenhouse gases and air pollution, with implementation to occur between 2012 and 2015".

In 2018, Canada enacted a revenue-neutral carbon levy starting in 2019, fulfilling Prime Minister Justin Trudeau's campaign pledge. The Greenhouse Gas Pollution Pricing Act applies only to provinces without provincial adequate carbon pricing. As of September 2020, seven of thirteen Canadian provinces and territories use the federal carbon tax while three have developed their own carbon tax programs. In December 2020, the federal government released an updated plan with a per tonne per year increase in the carbon pricing, reaching per tonne in 2025 and per tonne in 2030. Quebec became the first province to introduce a carbon tax. The tax was to be imposed on energy producers starting 1 October 2007, with revenue collected used for energy-efficiency programs. The tax rate for gasoline is $CDN0.008 per liter, or about per tonne of equivalent.

The Liberal government claimed 80% of Canadians were receiving more money back via a carbon rebate but the tax was unpopular with many Canadians and became a political issue. In 2023, the Official Opposition refused to support a free trade bill between Canada and the Ukraine that added a new environmental chapter to "promote carbon pricing". Liberal Trade Minister Mary Ng stated, "We should applaud the Ukrainians for being able to negotiate an agreement and also fight climate change." Liberal House leader Karina Gould, argued the Tories were "abandoning Ukraine and not taking climate change seriously", and accused them of "American-style, right-wing politics". Pierre Poilievre, the leader of the Opposition, called the carbon tax stipulation "cruel" and stated, "It is disgusting, that Trudeau’s ideological obsession with taxing working-class people, seniors and suffering families has come ahead of what should have been a free trade agreement."

By the end of 2024, opinion polls showed the ruling Trudeau Liberals were 20 points behind the Conservative Party of Canada, which was using the slogan "Axe the Tax" in their platform. Many Liberals, worried about projected losses in the 2025 federal election, pushed for Justin Trudeau to resign, which he eventually announced on January 6, 2025. The party former Governor of the Bank of Canada, Mark Carney, and within a few hours of being sworn in as Canada's 24th prime minister on March 14, 2025, Carney signed a declaration ending the consumer carbon tax and the rebate. Carney stated in his platform that "further measures to make up for the lost impact of the consumer carbon tax" would be implemented. Alberta Premier Danielle Smith warned of forthcoming increased industrial carbon taxes, which would be passed onto consumers without a rebate program in effect.

United States

A national carbon tax in the U.S. has been repeatedly proposed, but never enacted. For instance, on 23 July 2018, Representative Carlos Curbelo (R-FL) introduced H.R. 6463, the "Market Choice Act", a proposal for a carbon tax in which revenue is used to bolster American infrastructure and environmental solutions. The bill was introduced in the House of Representatives, but did not become law.

A number of organizations are currently advancing national carbon tax proposals. To address concerns from conservatives that a carbon tax would grow government and increase cost of living, recent proposals have centered around revenue-neutrality. The Citizens' Climate Lobby (CCL), republicEn (formerly E&EI), the Climate Leadership Council (CLC), and Americans for Carbon Dividends (AFCD) support a revenue-neutral carbon tax with a border adjustment. The latter two organizations advocate for a specific framework called the Baker-Shultz Carbon Dividends Plan, which has gained national bipartisan traction since its announcement in 2017. The central principle is a gradually rising carbon tax in which all revenues are rebated as equal dividends to the American people. This plan is co-authored by and named after Republican elder-statesmen James Baker and George Shultz. It is also supported by companies including Microsoft, Pepsico, First Solar, American Wind Energy Association, Exxon Mobil, BP, and General Motors.

References

References

1. (2020-06-01). "Carbon Leakage Along with the Green Paradox Against Carbon Abatement? A Review Based on Carbon Tax". Folia Oeconomica Stetinensia.
2. Bashmakov, I.. (2001). "Policies, Measures, and Instruments". Print version: Cambridge University Press, Cambridge, UK, and New York, N.Y., U.S.A.. This version: GRID-Arendal website.
3. (22 May 2013). "Effects of a Carbon Tax on the Economy and the Environment". Congressional Budget Office.
4. (September 2013). "Renewable energy subsidies: Second-best policy or fatal aberration for mitigation?". Resource and Energy Economics.
5. Bashmakov, I.. (2001). "Climate Change 2001: Mitigation. Contribution of Working Group III to the Third Assessment Report of the Intergovernmental Panel on Climate Change". Cambridge University Press, Cambridge, UK, and New York, N.Y., U.S.A..
6. "Costs and Benefits to Agriculture from Climate Change Policy".
7. (3 May 2019). "Carbon Taxes: What Can We Learn From International Experience?".
8. Gupta, S.. (2007). "Policies, instruments, and co-operative arrangements". Print version: Cambridge University Press, Cambridge, U.K., and New York, N.Y., U.S.A.. This version: IPCC website.
9. (2019). "Economists' Statement on Carbon Dividends".
10. World Bank Group. (6 June 2019). "State and Trends of Carbon Pricing 2019".
11. World Bank Group. (6 June 2019). "State and Trends of Carbon Pricing 2019".
12. "What Is A Carbon Tax?".
13. IPCC. (2001). "7.34. In (section): Question 7. In (book): Climate Change 2001: Synthesis Report. A Contribution of Working Groups I, II, and III to the Third Assessment Report of the Intergovernmental Panel on Climate Change (Watson, R.T. and the Core Writing Team (eds.))". Print version: Cambridge University Press, UK. This version: GRID-Arendal website.
14. (2022-01-19). "What a carbon tax can do and why it cannot do it all".
15. "Powering America Forward to Clean Energy".
16. (21 October 2009). "Letter to U.S. Senators from 18 scientific organizations".
17. IPCC. (2007). "Climate Change 2007: Synthesis Report". International Panel Climate Change.
18. "Volcanic Gases and Their Effects". United States Geological Survey.
19. Forster, P.. (2007). "Changes in Atmospheric Constituents and in Radiative Forcing". Print version: Cambridge University Press, Cambridge, UK, and New York, N.Y., U.S.A.. This version: IPCC website.
20. Groosman, Britt. "2500 Pollution Tax". Edward Elgar and the University of Ghent.
21. Massachusetts Institute of Technology. (November 5, 2013). "Emeritus: David Wilson was an early proponent of the concept of energy-use fees".
22. Greenbaum, Allan. (2010). "Environmental Law and Policy in the Canadian Context". Captus Press.
23. "There's a blatantly obvious way for the US to fight climate change and pay for new infrastructure: a carbon tax". [[Business Insider]].
24. Hepburn, C.. (2006). "Regulation by prices, quantities or both: an update and an overview". Oxford Review of Economic Policy.
25. Helm, D.. (2005). "Economic Instruments and Environmental Policy". The Economic and Social Review.
26. Helm, Dieter. (2005). "Economic Instruments and Environmental Policy". The Economic and Social Review.
27. (2005). "Climate change Policy: A Survey. In: "Climate Change Policy"". [[Oxford University Press]].
28. Stern, N.. (2007). "2.6 Non-marginal policy decisions. In: Stern Review on the Economics of Climate Change". Print version: Cambridge University Press. Pre-publication version: HM Treasury website.
29. Helm, D.. (2008). "Climate-change policy: why has so little been achieved?". Oxford Review of Economic Policy.
30. Gleckman, Howard. "How Should The U.S. Spend Carbon Tax Revenue?".
31. (2015-01-12). "Estimated social cost of climate change not accurate, Stanford scientists say".
32. (2020-07-30). "The Trump EPA is vastly underestimating the cost of carbon dioxide pollution to society, new research finds » Yale Climate Connections".
33. (2021-04-01). "Social Cost of Carbon: What Is It, and Why Do We Need to Calculate It?".
34. (2018-12-05). "France protests: Fuel tax rises in 2019 budget dropped". BBC News.
35. Cecco, Leyland. (2018-12-04). "How to make a carbon tax popular? Give the proceeds to the people".
36. Meyer, Robinson. (2019-11-13). "How to Cut U.S. Carbon Pollution by Nearly 40 Percent in 10 Years".
37. Cumbers, John. "This Climate Bill Would Actually Send Checks To Americans. Can It Help Save The Planet And Grow Our Economy?".
38. Barker, T.. (2007). "11.7.2 Carbon leakage. In (book chapter): Mitigation from a cross-sectoral perspective. In (book): Climate Change 2007: Mitigation. Contribution of Working Group III to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change (B. Metz ''et al''. Eds.)". Print version: Cambridge University Press, Cambridge, UK, and New York, N.Y., U.S.A.. This version: IPCC website.
39. Barker, T.. (2007). "Executive Summary. In (book chapter): Mitigation from a cross-sectoral perspective. In (book): Climate Change 2007: Mitigation. Contribution of Working Group III to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change (B. Metz ''et al''. Eds.)". Print version: Cambridge University Press, Cambridge, UK, and New York, N.Y., U.S.A.. This version: IPCC website.
40. IPCC. (2007). "Glossary A-D. In (section): Annex I. In (book): Climate Change 2007: Mitigation. Contribution of Working Group III to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change (B. Metz et al. Eds.)". Cambridge University Press, Cambridge, UK, and New York, N.Y., U.S.A..
41. Goldemberg, J.. (1996). "Introduction: scope of the assessment. In: Climate Change 1995: Economic and Social Dimensions of Climate Change. Contribution of Working Group III to the Second Assessment Report of the Intergovernmental Panel on Climate Change (J.P. Bruce et al. Eds.)". This version: Printed by Cambridge University Press, Cambridge, UK, and New York, N.Y., U.S.A. PDF version: IPCC website.
42. (December 2013). "Carbon Leakage: An overview".
43. Andersson, Julius J.. (November 2019). "Carbon Taxes and {{CO2}} Emissions: Sweden as a Case Study". American Economic Journal: Economic Policy.
44. (1 November 2015). "British Columbia's revenue-neutral carbon tax: A review of the latest "grand experiment" in environmental policy". Energy Policy.
45. "Carbon Taxes II".
46. "Carbon Tax {{!}} IGM Forum".
47. "Climate Change Policies".
48. (1 May 2016). "A bibliometric analysis of research on carbon tax from 1989 to 2014". Renewable and Sustainable Energy Reviews.
49. (2019). "Nudging out support for a carbon tax". Nature Climate Change.
50. Yamazaki, Akio. (1 May 2017). "Jobs and climate policy: Evidence from British Columbia's revenue-neutral carbon tax". Journal of Environmental Economics and Management.
51. Driscoll, Daniel. (January 2020). "Do Carbon Prices Limit Economic Growth?". Socius: Sociological Research for a Dynamic World.
52. (2023). "The Macroeconomic Impact of Europe's Carbon Taxes". American Economic Journal: Macroeconomics.
53. (1 February 2009). "The distributional implications of a carbon tax in Ireland". Energy Policy.
54. Berry, Audrey. (1 January 2019). "The distributional effects of a carbon tax and its impact on fuel poverty: A microsimulation study in the French context". Energy Policy.
55. Renner, Sebastian. (1 January 2018). "Poverty and distributional effects of a carbon tax in Mexico". Energy Policy.
56. (1 March 2014). "Distributional effects of a carbon tax in broader U.S. fiscal reform". Energy Policy.
57. Metcalf, Gilbert E.. (1 June 2019). "The distributional impacts of U.S. energy policy". Energy Policy.
58. (22 September 2021). "Here's What's Behind Europe's Surging Energy Prices". [[The New York Times]].
59. "CLIMATE JUSTICE AND CARBON PRICING". Department of Philosophy University College London.
60. (28 February 2023). "Environmental Justice and Carbon Pricing: Can They Be Reconciled?". Global Challenges.
61. (1990). "Free to Choose: A Personal Statement". Harcourt.
62. Tyson, Laura. (28 June 2013). "The Myriad Benefits of a Carbon Tax". [[The New York Times]].
63. "All Signatories".
64. (January 16, 2019). "Economists' Statement on Carbon Dividends". [[The Wall Street Journal]].
65. Dlouhy, Jennifer. (January 16, 2019). "From Greenspan to Yellen, Economic Brain Trust Backs Carbon Tax". [[Bloomberg News]].
66. "History is Made – The Economists' Statement on Carbon Dividends".
67. "Prioritising innovation: the case against the carbon tax".
68. (February 2022). "Limited impacts of carbon tax rebate programmes on public support for carbon pricing". Nature Climate Change.
69. "Citizens' Climate Lobby Chapters".
70. Adler, Ben. (2015-07-23). "James Hansen's new climate study is terrifying, but he still has hope".
71. (2021-12-02). "Carbon tax acceptability with information provision and mixed revenue uses". Nature Communications.
72. Miller, Robin. (2021-11-05). "New Global Poll Shows Growing Public Support for a Carbon Tax".
73. Smith, S.. (11 June 2008). "Environmentally Related Taxes and Tradable Permit Systems in Practice". [[OECD]], Environment Directorate, [[Centre for Tax Policy and Administration]].
74. Jacobsen, Mark. "Environmental Economics Lecture 6–7." UCSD Econ 131. Econ 131 Lecture, 20 October 2016, San Diego, UCSD.
75. "Which Is Better: Carbon Tax or Cap-and-Trade?" Grantham Research Institute on Climate Change and the Environment, London School of Economics, 21 March 2014, London School of Economics/GranthamInstitute/faqs/which-is-better-carbon-tax-or-cap-and-trade/.
76. "Cap and Trade vs. Taxes." Center for Climate and Energy Solutions, Center for Climate and Energy Solutions, 24 October 2017, www.c2es.org/document/cap-and-trade-vs-taxes/.
77. "EU Emissions Trading System (EU ETS)." Icapcarbonaction.com, International Carbon Action Partnership, 10 October 2017, icapcarbonaction.com/en/?option=com_etsmap&task=export&format=pdf&layout=list&systems[]=43
78. "EU Emissions Trading System (EU ETS)." Icapcarbonaction.com, International Carbon Action Partnership, 10 October 2017, icapcarbonaction.com/en/?option=com_etsmap&task=export&format=pdf&layout=list&systems[]=43.
79. (1 September 2010). "A symmetric safety valve". Energy Policy.
80. "An Emissions Assurance Mechanism: Adding Environmental Certainty to a Carbon Tax".
81. (20 February 2017). "The Four Pillars of Our Carbon Dividends Plan".
82. James Hansen. Storms of My Grandchildren Bloomsbury, London 2009 {{ISBN. 978-1-4088-0744-6 p. 241.
83. Randerson, James. (2 January 2009). "Nasa climate expert makes personal appeal to Obama". The Guardian.
84. (1996). "Climate change 1995 : economic and social dimensions of climate change". Cambridge [England]; New York: Published for the Intergovernmental Panel on Climate Change [by] Cambridge University Press.
85. (1 February 2008). "The cost and effectiveness of policies to reduce vehicle emissions". OECD ITF Joint Transport Research Centre.
86. (16 November 2007). "Oil dependence : Is transport running out of affordable fuel?". OECD ITF Joint Transport Research Centre.
87. (2012). "Effectiveness and equity implications of carbon policies in the United States construction industry". Elsevier Ltd..
88. (2021-05-25). "State and Trends of Carbon Pricing 2021". [[World Bank]].
89. World Bank. (May 2023). "State and Trends of Carbon Pricing 2023".
90. Andersen, Prof. Mikael Skou. (2010). "Europe's experience with carbon-energy taxation". Sapiens.
91. Tais Gadea Lara. (9 July 2024). "What the world can learn from Denmark's carbon tax on agriculture". Devex.
92. Pearce, D.. (2005). "The United Kingdom Climate Change Levy: A study in political economy". OECD Environment Directorate, [[Centre for Tax Policy and Administration]].
93. Kanter, James. (22 June 2010). "Europe Considers New Taxes to Promote 'Clean' Energy". The New York Times.
94. Kanter, James. (22 June 2010). "Europe Considers New Taxes to Promote 'Clean' Energy". The New York Times.
95. Meyer, Peter. (2010). "United States. Costa Rica: Background and U.S. Relations".
96. (8 October 2009). "Costa Rica: Experts warn about the dangers of missing environmental targets".
97. "Costa Rica: Background and U.S. Relations".
98. (24 May 2007). "Costa Rica aims to win "carbon neutral" race". Reuters.
99. Bryden, Joan. (20 October 2008). "Liberals cast themselves in leader's light". Toronto Star.
100. Bilton, Chris. (7 January 2009). "Green shifting right?". [[Eye Weekly]].
101. Reid, Scott. (26 December 2009). "The good, the (mostly) bad, and the faint signs of hope". The Globe and Mail.
102. [[Martha Hall Findlay. Findlay, Martha Hall]]. [https://www.theglobeandmail.com/servlet/story/RTGAM.20090119.WFindlay19/BNStory/politics/home After the Green Shift] {{Webarchive. link. (27 February 2009. ''The Globe and Mail''. 19 January 2009.)
103. "Case of the Conservatives' carbon amnesia". [[The Globe and Mail]].
104. [https://www.canlii.org/en/ca/laws/stat/sc-2018-c-12-s-186/139160/sc-2018-c-12-s-186.html Greenhouse Gas Pollution Pricing Act] {{Webarchive. link. (5 January 2019, in force since 21 June 2018 (page visited on 26 October 2018).)
105. Nuccitelli, Dana. (26 October 2018). "Canada passed a carbon tax that will give most Canadians more money". [[The Guardian]].
106. (2020-09-24). "Carbon Pricing in Canada (Updated 2020)".
107. "A Healthy Environment and a Healthy Economy".
108. "Quebec Government to Implement Carbon Tax".
109. "Where Carbon Is Taxed".
110. Canada, Department of Finance. (14 February 2024). "Canada Carbon Rebate amounts for 2024-25".
111. "Canadians get more in rebates than they pay in carbon taxes says PBO | National Post".
112. "Carbon pricing mention in updated Ukraine trade deal sparks political spat - National | Globalnews.ca".
113. Coletto, David. (11 April 2024). "Abacus Data Poll: Conservatives open up their largest lead yet.".
114. "Mark Carney presents plan for change on consumer carbon tax".
115. "Carney says consumer carbon price ‘eliminated’ immediately | Globalnews.ca".
116. "Premier Smith not sold on killing of consumer carbon tax, wants industrial levy plan | Globalnews.ca".
117. H.R. 6463 https://www.congress.gov/bill/115th-congress/house-bill/6463 {{Webarchive. link. (20 November 2021)
118. Curbelo, Carlos. (2018-08-16). "H.R.6463 - 115th Congress (2017-2018): Market Choice Act".
119. Curbelo, Carlos. (2018-08-16). "Actions - H.R.6463 - 115th Congress (2017-2018): Market Choice Act".
120. (2019-07-12). "Revenue-neutral carbon tax: The climate policy that could appeal to conservatives » Yale Climate Connections".
121. "republicEn - Home of the EcoRight".
122. Halstead, Ted. (April 2017). "A climate solution where all sides can win".
123. (2017-02-08). "GOP senior statesmen making push for a carbon tax".
124. (4 March 2021). "The Four Pillars of the Carbon Dividends Plan".
125. (5 February 2017). "The Conservative Case for Carbon Dividends".
126. Roberts, David. (22 June 2018). "Energy lobbyists have a new PAC to push for a carbon tax. Wait, what?".
127. "Founding Members".