Singapore carbon tax 2026: Rate, threshold, and business impact

What is the Singapore carbon tax?

Singapore's carbon tax is a charge placed on facilities with significant direct greenhouse gas emissions. It operates under the Carbon Pricing Act (CPA) and was introduced in 2019. The idea is fairly simple. A facility that produces more taxable greenhouse gas emissions faces a higher carbon cost.

This gives businesses a practical reason to look at where emissions come from, how much energy they use and whether older or inefficient systems can be improved. For larger industrial facilities, carbon tax is therefore closely connected with energy efficiency, fuel use, equipment performance and longer-term decarbonisation planning.

Singapore's carbon tax rate 2026

For businesses with high emissions, the difference can be significant. Carbon cost should therefore not be looked at only when the tax becomes due. It also needs to be considered when planning new machinery, energy contracts, factory upgrades and emission-reduction projects. Singapore has also indicated a longer-term carbon price range of S$50 to S$80 per tonne by 2030. The carbon tax rates are:

For emissions in 2026 and 2027, the applicable rate is S$45 per tonne of CO₂e. That is a sizeable increase from the S$25 rate used in the previous two years.

What is the carbon tax threshold in Singapore?

The main taxable threshold is 25,000 tonnes of CO₂e in direct greenhouse gas emissions per calendar year. When a facility reaches or exceeds this level, it is treated as a taxable facility under the Carbon Pricing Act. There is also a lower level that businesses should know about:

• 2,000 to below 25,000 tCO₂e: Reportable facility
• 25,000 tCO₂e or more: Taxable facility

So a facility does not need to reach 25,000 tCO₂e before emissions requirements become relevant. A business may already have reporting responsibilities once its direct emissions reach the lower threshold. Facilities that reach the relevant threshold also need to register under the Carbon Pricing Act within the required timeframe.

How is Singapore's carbon tax calculated?

The final obligation depends on the facility's verified emissions and the rules that apply to it. Eligible international carbon credits may also affect the final amount in certain cases. Still, the basic calculation is useful for budgeting. A business can estimate what its current emissions may cost and compare that figure against the investment needed to cut those emissions. The basic calculation is straightforward:

• Taxable emissions × carbon tax rate

Take a taxable facility producing 100,000 tonnes of taxable emissions in 2026. The basic calculation would be:

• 100,000 tCO₂e × S$45 = S$4.5 million

For an energy-intensive plant, this shows how quickly carbon cost can become a serious operating expense.

Who needs to pay Singapore's carbon tax?

Singapore's carbon tax mainly applies to industrial facilities producing at least 25,000 tCO₂e of direct greenhouse gas emissions in a year. Facilities producing 2,000 tCO₂e or more but below 25,000 tCO₂e can still fall under emissions reporting requirements. The important point is that carbon tax is not decided by company revenue, employee count or the physical size of the business. Relevant sectors can include:

• Manufacturing and manufacturing-related services
• Electricity and gas supply
• Water supply
• Waste-management activities
• Other high-emission industrial operations

A business below the taxable threshold may not need to pay carbon tax directly. But that does not always mean there are no carbon-related requirements. The level of direct greenhouse gas emissions from the facility is what matters. For that reason, companies with fuel-heavy or energy-intensive operations should understand their emissions early rather than waiting until they are close to the taxable threshold.

Singapore carbon tax compliance requirements

Taxable facilities need proper systems for measuring, recording and reporting their emissions. The work is not limited to calculating a number at the end of the year. Below are the major requirements:

1. Develop a monitoring plan

A taxable facility needs a monitoring plan. This sets out the facility's greenhouse gas emission sources, relevant emission streams, calculation methods and the procedures used to maintain data quality. A clear plan helps keep emissions calculations consistent from one reporting period to the next.

2. Measure and monitor emissions

The business needs reliable information on its direct greenhouse gas emissions. That usually means keeping proper records for fuel use, industrial activities and other relevant emission sources. Poor data can create problems later, especially during reporting and verification.

3. Submit an emissions report

A taxable facility must prepare an emissions report for each reporting period. The report needs to follow the approved monitoring plan. It also has to be verified by an accredited third-party verification company before submission.

4. Appoint responsible personnel

A taxable facility must appoint at least one GHG manager. This person is responsible for preparing and submitting the emissions report. The facility must also appoint at least one Designated Representative. These two roles cannot be handled by the same person.

5. Pay the applicable carbon tax

Once emissions have been measured, reported and properly verified, the taxable facility needs to meet its carbon-tax obligation under the Carbon Pricing Act. For businesses with large emissions volumes, this needs to be included in normal financial planning rather than treated as a last-minute compliance expense.

Business impact of Singapore's carbon tax 2026

The S$45 per tCO₂e carbon tax rate in 2026 can affect businesses in more ways than the tax bill itself. For large industrial facilities, the impact is direct. Other companies may feel it through electricity, materials, suppliers and general operating costs.

Higher operating costs

The most direct impact is cost. A facility with high emissions may see a noticeable increase in carbon-tax exposure even if its production level stays the same. Businesses that rely heavily on fossil fuels or energy-intensive industrial processes should therefore include carbon cost when preparing budgets and forecasts.

Pressure to improve energy efficiency

A higher carbon price can make energy-saving projects more financially attractive. Reducing unnecessary energy use can lower both utility costs and emissions. That may involve improving equipment performance, reducing energy losses, changing operating schedules or replacing inefficient machinery.

Singapore's Energy Efficiency Grant can also support qualifying energy-efficient equipment. The shared information notes support of up to 70% for eligible SMEs and up to 30% for eligible non-SMEs until 31 March 2027, subject to the scheme's requirements.

Increased need for carbon management

Businesses need to know where their emissions actually come from. Without reliable data, it is difficult to estimate carbon exposure or decide which reduction measures should come first. Carbon management is therefore becoming part of normal business planning, particularly for companies with high energy use.

Supply chain considerations

A company may not pay carbon tax directly and still feel the effect. Suppliers, manufacturers, logistics providers or other business partners may face higher energy or carbon-related costs. Some of that cost can move through the supply chain and eventually affect procurement prices. So businesses below the taxable threshold should not automatically ignore carbon pricing.

Long-term investment decisions

Carbon cost can also change the way businesses compare equipment and technology. A cheaper machine with high energy consumption may cost more over its working life than a more efficient alternative. This becomes more relevant as carbon prices increase.

Businesses planning new factories, equipment replacement or major energy systems should therefore look at both upfront cost and long-term energy and carbon exposure.

Can businesses use carbon credits?

Singapore allows taxable facilities to use eligible International Carbon Credits (ICCs) to offset up to 5% of taxable emissions, subject to the requirements of the ICC Framework. Businesses considering credits can also review our carbon trading program for support with carbon-credit assessment, offset planning and carbon exposure.

Carbon credits can be useful, but they should not become the whole strategy. A business still needs to look at what can be reduced inside its own operation. Energy efficiency, equipment upgrades and process improvements can deliver longer-term reductions that credits alone cannot provide.

How can businesses reduce carbon tax exposure?

There is no single solution for every facility. A factory with large combustion emissions will need a different approach from a business where most energy use comes from cooling or electrical equipment. Still, several steps are useful for most companies.

Conduct an emissions assessment

Start with the current position. Identify major direct emission sources and work out whether the facility is below, close to or already above the relevant reporting and taxable thresholds. This gives the business a proper baseline.

Improve energy efficiency

Check where energy is being wasted. Old equipment, unnecessary operating hours, poor controls and inefficient production processes can all increase both cost and emissions. Sometimes the first useful reduction measures are quite practical.

Consider renewable energy

Businesses can assess lower-carbon or renewable energy options where they are technically and commercially suitable. The right choice depends on the facility, energy demand and existing systems. It should be based on real operational needs rather than simply choosing a technology because it looks good in a sustainability report.

Modernise industrial equipment

Older boilers, chillers, motors, compressors and other industrial systems can use more energy than necessary. Replacing or upgrading these systems may reduce operating costs and emissions at the same time. The investment needs to be assessed against expected energy savings, carbon savings and equipment life.

Establish carbon cost forecasting

Businesses should not calculate carbon cost only for the current year. It is useful to model what happens under different emission levels and future carbon prices. This can help management compare the cost of doing nothing against the cost of investing in reduction measures.

Strengthen emissions data management

Reliable carbon planning starts with reliable data. Businesses should know who owns the data, where supporting records are kept and how calculations are checked. Good documentation also makes verification and climate reporting easier later.

Why start planning for Singapore's carbon tax 2026 now?

The 2026 rate is already much higher than the S$25 per tonne rate used in 2024 and 2025. At the same time, Singapore has indicated a longer-term carbon price range of S$50 to S$80 per tonne by 2030. For a business with high emissions, waiting can make future decisions harder and more expensive. Starting early gives the company more room to:

• Identify its largest emission sources
• Estimate carbon-tax exposure
• Improve energy efficiency
• Review low-carbon technology options
• Assess eligible carbon credits
• Improve emissions reporting
• Build a longer-term decarbonisation plan
• Include carbon cost in investment decisions

Not every change needs to happen at once. The useful starting point is understanding where the business stands today and which actions will make the most significant difference.

Singapore carbon tax compliance and advisory services

Knowing the carbon tax rate is one thing. Managing the data, reporting requirements and reduction opportunities is another. EcoSphere Sustainability Solutions Pte. Ltd. supports businesses with Singapore carbon tax planning, emissions assessment, carbon accounting and ESG reporting, compliance preparation and decarbonization strategy.

The work can start with a basic review of current emissions and facility thresholds. From there, businesses can identify reporting gaps, estimate future carbon costs and look at practical ways to reduce emissions. Support can include:

• Carbon tax exposure assessment
• GHG emissions measurement
• Carbon accounting
• Emissions data review
• Monitoring and reporting preparation
• Energy-efficiency assessment
• Decarbonisation planning
• Carbon-credit review
• Carbon cost forecasting
• Longer-term sustainability planning

Choose EcoSphere Sustainability Solutions Pte. Ltd. for carbon tax reduction in Singapore

Carbon tax planning needs more than checking a rate and multiplying it by emissions. EcoSphere Sustainability Solutions Pte. Ltd. is a trusted carbon tax-reducing company in Singapore. Businesses also need reliable data, clear reporting processes, and a realistic plan to reduce future carbon costs.

• Practical carbon tax guidance: Carbon tax can feel complex when emissions, compliance and cost planning are handled separately. We help businesses focus on what matters most.
• Emissions assessment: We review key emission sources to identify where reduction efforts can have the most impact.
• Compliance support: We help organize the records, monitoring and reporting needed for smoother carbon tax compliance.
• Decarbonisation planning: We identify practical ways to reduce emissions through energy, equipment and operational improvements.
• Business-focused solutions: We consider costs, operational needs and long-term carbon exposure so the plan is realistic and usable.

Reduce your carbon tax exposure with a practical plan

Carbon tax planning should start before the final bill is calculated. A clear view of your emissions, reporting gaps and reduction opportunities can help your business make better decisions. EcoSphere Sustainability Solutions Pte. Ltd. provides carbon tax advisory in Singapore, covering emissions assessment, carbon accounting, compliance preparation and decarbonisation planning.