The Climate Change Authority has released a report describing Australia’s 2020 carbon emissions reduction target as "inadequate" and recommending targets of at least 15 per cent.
But legislation to scrap the carbon tax, which came into force on July 1 2012, will be put before Parliament in the coming weeks and moves are in place to abolish two major climate change authorities.
An earlier report from The Climate Commission said that by 2013, 33 countries and 18 sub-national jurisdictions would have a carbon price in place.
If Australia is not be one of them, what does that mean? And how do we compare on a world scale?
SBS looks at how the carbon tax works and which countries have measures in place.
WHY DID THE FORMER GOVERNMENT INTRODUCE A CARBON TAX?
The former federal government said a price tag on pollution was the most efficient way to discourage business and industry from emitting greenhouse gases, which are contributing to climate change.
HOW DOES CARBON PRICING CURRENTLY WORK IN AUSTRALIA?
Carbon pricing, implemented in Australia on July 1, 2012, roughly applies to Australia's largest 500 emitters, which are companies that emit more than 25,000 tonnes of carbon dioxide or supply or use natural gas.
The tax stands at $23 per tonne of CO2. The tax is intended to rise to $A24.15 per tonne in the following financial year and then to $A25.40 per tonne in 2014-15.
From July 2015, the number of units issued by the government each year will to be capped by regulators. Most carbon units will be auctioned by the Clean Energy Regulator and the price will be set by the market, starting from a floor price of $A15 per tonne.
Under the Carbon Farming Initiative (CFI), farmers and land managers can earn carbon credits by storing carbon or reducing greenhouse gas emissions on the land. These credits can be sold to people and businesses wishing to offset their emissions.
This scheme includes credits earned from activities such as reforestation, savannah fire management and reductions in emissions from livestock and fertiliser use.
CFI credits can also be sold to international companies.
Australia has a legislated renewable energy target designed to ensure that 20 per cent of electricity comes from renewable sources by 2020.
But the future of the current tax is uncertain. Following the 2013 federal election, Prime Minister Tony Abbott announced plans to scrap the controversial tax. He is now putting increased pressure on Labor leader Bill Shorten to support legislation repealing the tax pass through the senate.
WHY DOES THE FEDERAL GOVERNMENT PLAN TO SCRAP THE TAX?
The Coalition believed the carbon tax increases the cost of living and increases electricity and gas bills for families.
On the Liberal Party's website, it claims: "Average families will be more than $550 better off next year alone under the Coalition’s plan than under Labor’s carbon tax. Over the next six years they will be $3,000 better off under the Coalition than under Kevin Rudd’s carbon tax."
HOW IS A CARBON TAX DIFFERENT FROM AN EMISSIONS TRADING SYSTEM?
In an emissions trading system, a central authority sets a cap on how much a pollutant such as CO2 may be emitted. The cap is allocated to companies in the form of emissions permits, which give them the right to emit a certain amount of the pollutant. Firms are required to hold a number of permits equivalent to their emissions.
The total number of permits issued to all companies cannot exceed the emissions cap, and firms that need to increase their emission permits must buy them from companies that require fewer permits. This means permit buyers are paying a charge for polluting more, while sellers are being rewarded for reducing emissions.
CARBON TAXES AROUND THE WORLD
CHINA (state-based action)
The Chinese Government plans to develop emissions trading schemes in seven key cities and provinces from 2013. These schemes will cover around 250 million people. The Chinese Government aims to work towards a nation-wide approach after 2015.
UNITED STATES (state-based action)
There is no nationwide carbon tax levelled in the USA, although a few states have introduced the tax. The United States Administration has not been able to secure support for legislation to set either a price or a limit on greenhouse gas emissions. However, emissions trading has operated in the power sector in nine states since 2009. California's emissions trading scheme will start in January 2013.
CANADA (province-based action)
Canada does not have a federal carbon tax, but two Canadian provinces have existing carbon taxes (Quebec and British Columbia). Alberta implemented emissions trading in 2006 and Quebec's scheme will start in 2013. A further two provinces, British Columbia and Ontario, are considering emissions trading schemes.The Canadian Federal Government has no immediate plans to implement national emissions trading.
INDIA (tax on coal)
In July 2010, India introduced a nationwide carbon tax of 50 rupees per tonne (less than $A1) of coal both produced and imported to India.
The New Zealand Government set up an emissions trading scheme in 2008. The scheme covered forestry initially, and was then expanded in 2010 to cover stationary energy, transport, liquid fossil fuels and industrial processes.
The Republic of Korea passed legislation in May 2012 for an emissions trading scheme to start from 1 January 2015. The emissions trading scheme will cover facilities producing more than 25,000 tonnes of greenhouse gas emissions – expected to be around 450 of the country's largest emitters.
In April 2012, Japan legislated for a carbon tax of approximately ¥289 per tonne ($A3.30) by increasing existing taxes on fossil fuels (coal and LPG/LNG) with effect from 1 October 2012. Half the revenue will
fund low-emissions technologies. Japan has emissions trading schemes operating in the Tokyo and Saitama regions, covering 20 million people.
EUROPE (national-based action)
The European Union emissions trading scheme began in 2005 and now covers the 27 countries of the European Union, and three non-European Union members: Iceland, Liechtenstein, and Norway. Their current target is a 21 per cent cut of 2005 emissions by 2025 (Australia's is a 5% cut of 2000 emissions by 2020).
A carbon tax was proposed by the European Commission in 2010, but a carbon tax has not been agreed upon by the 27 member states. The current proposal by the European Commission would charge firms between 4 and 30 euros per metric tonne of CO2.
Several European countries have enacted a carbon tax. They include: Denmark, Finland, Ireland, the Netherlands, Norway, Slovenia, Sweden, Switzerland, and the UK.
Finland introduced the world's first carbon tax in 1990, initially with exemptions for specific sectors. Manly changes were later introduced, such as a border tax on imported electricity. Natural gas has a reduced tax rate, while peat was exempted between 2005 and 2010. In 2010, Finland's price on carbon was €20 per tonne of CO2.
The Netherlands introduced a carbon tax in 1990, which was then replaced by a tax on fuels. In 2007, it introduced a carbon-based tax on packaging, to encourage recycling.
In 1991, Sweden enacted a tax on the use of coal, oil, natural gas, petrol and aviation fuel used in domestic travel. The tax was 0.25 SEK/kg ($US100 per tonne of C02) and was later raised to $US150. With Sweden raising prices on fossil fuels since enacting the carbon tax, it cut its carbon pollution by 9 per cent between 1990 and 2006.
In 1991, Norway introduced a tax on carbon. However its carbon emissions increased by 43 per cent per capita between 1991 and 2008.
Since 2002, Denmark has had a carbon tax of 100 DKK per metric ton of CO2, equivalent to approximately 13 Euros or 18 US dollars. Denmark's carbon tax applies to all energy users, but industrial companies are taxed differently depending on the process the energy is used for, and whether or not the company has entered into a voluntary agreement to apply energy efficiency measures.
A carbon incentive tax was introduced in Switzerland in 2008. It includes all fossil fuels, unless they are used for energy. Swiss companies can be exempt from the tax if they participate in the country's emissions trading system. The tax amounts to CHF 36 per metric tonne CO2.
In 1993, the UK government introduced a tax on retail petroleum products, to reduce emissions in the transport sector. The UK's Climate Change Levy was introduced in 2001. The United Kingdom participates in the European Union emissions trading scheme and is covered by European Union policies and measures. The United Kingdom has put in place regulations requiring all new homes to have zero emissions for heating, hot water, cooling and lighting from 2016.
A tax on oil and gas came into effect in 2010. It was estimated to add around €43 to filling a 1000 litre oil tank and €41 to the average annual gas bill.
In 1997, Costa Rica enacted a tax on carbon pollution, set at 3.5 per cent of the market value of fossil fuels. The revenue raised from this goes into a national forest fund which pays indigenous communities for protecting the forests around them.
The state of Rio de Janeiro is exploring options to implement a state-wide cap and trade system.
South Africa introduced a carbon tax on new vehicle sales in September 2010. South Africa is planning to introduce a carbon tax from 2013, starting at R120 ($A15) per tonne for emissions above a threshold. Each company will have 60 per cent of its emissions tax exempt, with higher exemption thresholds for cement, iron, steel, aluminium, ceramics and fugitive emissions as well as trade exposed industries. Agriculture, forestry, land use and waste will not be taxed.