In Singapore, carbon tax is calculated and collected based on a company's greenhouse gas (GHG) emissions. Companies must measure and report their carbon dioxide equivalent (CO₂e) emissions annually based on the standards set by the National Environment Agency (NEA). Reported data must be verified by an accredited independent third-party body to ensure accuracy and compliance.
The total verified emissions are then taxed at the applicable carbon tax rate, which is SGD 25 per ton of CO₂e starting in 2024. Companies are required to pay the carbon tax to NEA within the stipulated timeframe after the reporting year. Failure to comply may result in fines or enforcement actions by NEA. This mechanism ensures that companies bear the cost of their emissions while encouraging emission reductions and sustainable development.