As the world accelerates toward Net Zero targets, environmental measures are increasingly becoming an unavoidable cost of doing business, particularly with The introduction of a Carbon Tax in Thailand, which is embedded within the excise tax structure, initially applied to oil and petroleum products.  At the same time, the European Union’s Carbon Border Adjustment Mechanism (CBAM) is growing pressure on the manufacturing and export sectors. Understanding carbon tax mechanism, which businesses are likely to be affected, and how they can prepare is therefore becoming an increasingly urgent priority for Thai businesses.

This article provides an insight into every dimension of the carbon tax, along with guidance on how businesses can adapt through clean energy solutions. If you’re seeking to reduce carbon tax costs and strengthen your competitive advantage on the global stage, Banpu NEXT, a Net Zero Solutions provider, is ready to be your long-term partner in planning your business toward sustainable growth.

What Is Carbon Tax?

A Carbon Tax is an economic and environmental policy mechanism used by governments to impose a tax on businesses activities related to carbon emissions. Its purpose is to encourage businesses to become more aware of their environmental impact and shift toward low greenhouse gas emissions production processes and promote environmentally friendly products. It can also strengthen a government’s position in international trade negotiations, particularly with countries and markets that prioritize GHG emissions reduction and the broader impacts of climate change and environment.

Many countries have adopted carbon tax mechanism as a practical way to reduce greenhouse gas emissions and accelerate their Net Zero targets.

The “Polluter Pays Principle”

Carbon tax is based on the principle of shared responsibility. Once GHG emissions carry a financial cost, businesses are responsible for bearing that cost in proportion to their actual emissions. Governments may set the tax rate based on the amount of carbon dioxide emitted or incorporate the tax into the pricing structure of fossil fuels at the source. As a result, GHG emissions become a tangible cost that businesses must actively manage.

How are different between Carbon Tax, Carbon Credits, and the ETS (Emissions Trading Scheme)?

Comparison Criteria	Carbon Tax	ETS	Carbon Credit
Principle	The government imposes a tax based on the amount of carbon emissions.	An emissions cap is set. Businesses that emit less than their allocated allowance can sell their surplus allowances through emissions trading.	Businesses purchase credits generated by decarbonization or carbon removal projects.
Objective of Carbon Pricing	Encourage businesses to reduce carbon emissions by making emissions a direct tax-related cost.	Keep total emissions within a defined cap through the trading of emissions allowances.	Support decarbonization or carbon removal projects, while allowing businesses to use credits to offset their remaining emissions.
How Businesses Need to Adapt	Reduce carbon emissions to lower the carbon tax burden.	Choose the most cost-effective approach between investing in emissions reductions, such as utilizing clean energy solutions and selling surplus allowances for additional value, or purchasing additional allowances when emissions exceed the allocated quota.	Purchase carbon credits to offset emissions, helping the organization move closer to its Carbon Neutrality and Net Zero goals.
Implementation	Mandatory for all businesses that fall within the applicable scope.	Mandatory only for designated sectors, such as large industries.	Generally voluntary.

Carbon Tax and ETS are both government-mandated carbon pricing mechanisms, with Carbon Tax focusing on price control and ETS on emissions quantity control. Thailand is currently preparing for both systems to support its Net Zero 2050 target. A carbon tax has already been introduced through the fuel excise tax structure, while the ETS is still under development and is expected to enter a pilot phase to ensure that the system is appropriate for Thailand’s economic structure.

Businesses should therefore begin collecting emissions data and reducing their carbon footprint today, while improving energy efficiency and adopting clean energy solutions. Taking action early will help businesses prepare for future carbon regulations and strengthen their competitive advantage.

Thailand’s Carbon Tax Outlook and Implementation Timeline

Thailand is accelerating the development of carbon pricing mechanisms to prepare businesses for the transition and move environmental measures from voluntary participation toward mandatory implementation. The key developments are as follows:

Excise Department Policy and the Draft Climate Change Act

The Excise Department has begun piloting the implementation of a Carbon Tax by restructuring excise taxes on oil and petroleum products to reflect their GHG emissions. At the same time, Council of Ministers has approved in principle the Draft Climate Change Act  and is pushing for the legislation to come into effect as soon as possible, with the aim of establishing a national framework for GHG reduction.

A key element is the combined implementation of carbon pricing mechanisms, including the Emissions Trading Scheme (ETS) and Carbon Tax, to support the transition toward a low-carbon economy and systematically pave the way for Thailand to achieve its Net Zero target.

The EU’s CBAM and the Growing Pressure on Thai Exporters

Thailand’s export sector must also prepare for the European Union’s Carbon Border Adjustment Mechanism (CBAM), which entered its definitive phase at the beginning of 2026. If Thai businesses fail to assess and reduce carbon emissions from their production processes, they may face higher carbon-related costs, directly affecting their competitiveness in global markets.

These carbon-related policies and requirements are therefore a clear indication that environmental measures have become a new set of rules for global trade—one that businesses can no longer afford to ignore.

Which Types of Businesses Are Affected by Carbon Tax?

Businesses affected by carbon taxation can generally be divided into two main groups:

1. Businesses Directly Affected (High GHG Emitters)

• • Energy and Power Businesses, such as energy producers, power plants, and refineries, are among the sectors most directly exposed to carbon-related taxes.
  • Energy-Intensive Heavy Industries, such as cement, iron and steel, petrochemicals and plastics, glass, paper and pulp, aluminum, and chemical fertilizers. These industries consume large amounts of energy, while some also generate significant emissions directly from their production processes.
  • Transportation and Logistics Businesses, including airlines, shipping companies, and freight trucking operators that rely heavily on fuels.

2. Businesses Indirectly Affected (Through Higher Costs)

These businesses may be affected through cost pass-through, as upstream producers pass higher carbon-related costs through service fees, transportation costs, energy and raw material prices, including:

• • General Manufacturing Industries that use electricity or fuel in their production processes, which may face higher electricity and energy costs.
  • Agriculture and Food Processing Industries that rely on fertilizers, machinery, and cold chain systems. Cold chain refers to the temperature-controlled handling of products throughout the entire supply chain, from the source of production to the end consumer, in order to preserve product quality and safety. This includes cold storage facilities at production sites, refrigerated trucks and containers, temperature-controlled distribution centers, and refrigerated display or storage units at retail locations. Each stage must maintain the required temperature range throughout the journey.
  • Retail, Real Estate, and Construction Businesses, which may face higher costs for materials such as cement and steel, as well as increased transportation expenses.

Even if some businesses are not directly liable for carbon tax, they may still be affected by higher costs for energy, raw materials, transportation, and goods. Businesses should therefore begin measuring their organizational and supply chain carbon footprints today, while developing plans to reduce operational emissions and adopt clean energy. These measures can help mitigate future risks and prepare businesses for the transition toward a Net Zero economy.

Impact on Cost Structures and the Competitiveness of Thai Businesses

Businesses with high GHG emissions are more likely to face rising operating expenses (OPEX), including fuel, electricity, transportation, and raw material costs passed on by suppliers that are also affected. Without a clear plan to reduce carbon emissions and improve energy management, these additional costs may accumulate over time and put increasing pressure on long-term profitability.

This issue can also affect a company’s competitiveness in international markets, as global business partners are placing greater emphasis on Carbon Footprint, Green Supply Chain, and Net Zero targets. Businesses that are unable to disclose their emissions data or demonstrate a clear carbon reduction plan may face higher carbon-related costs and risk losing opportunities to participate in the supply chains of major global companies in the future.

5 Sustainable Ways Organizations Can Prepare for and Reduce the Burden of Carbon Tax

Start by measuring the organization’s carbon emissions, then develop a systematic plan to reduce emissions at the source.

1. Assess the Carbon Footprint for Organization (CFO) across all scopes to identify the main sources of carbon emissions, such as fuel consumption in factories, electricity use, transportation, and supply chain emissions. Once the major emission sources are identified, the organization can prioritize where reductions should begin.
2. Reduce emissions at the source by improving production processes to lower energy consumption and enhance energy efficiency. This may include using cooling systems to maintain appropriate indoor temperatures while reducing unnecessary energy use.
3. Transition to clean energy by adopting solutions that help reduce Scope 1 and Scope 2 emissions, such as installing solar power systems at factories or commercial buildings and transitioning to EV fleets for transportation and logistics operations.
4. Offset remaining emissions only after all feasible reduction measures have been implemented. For residual emissions that cannot yet be eliminated, organizations can use carbon credits for offset, such as credits from Thailand’s T-VER projects or other voluntary carbon markets.
5. Report and continuously improve (Report & Improve) by disclosing emissions data and progress in accordance with recognized standards, such as the GHG Protocol and ISO 14064. Organizations should establish emissions reduction targets and measure performance annually. This ongoing process enables businesses to continuously improve, prepare for increasingly stringent carbon regulations, and support progress toward their Net Zero targets.

These approaches can help organizations sustainably reduce carbon-related costs, while laying a strong foundation for achieving Net Zero and maintaining long-term competitiveness.

Reduce Carbon Tax Costs and Unlock Business Opportunities with Banpu NEXT’s Net Zero Solutions

For businesses preparing for carbon taxation and carbon emissions reduction to lower costs, strengthen their competitive advantage in global markets, and drive their Net Zero goals, partnering with a Net Zero consulting company for Thai businesses that specializes in Carbon Footprint management and clean energy solutions can help plan and implement more focused and effective.

Banpu NEXT, a comprehensive Net Zero Solutions provider, offers solutions designed to deliver targeted, measurable carbon reductions and long-term value. These include Solar and ESS, which combine solar power with Battery Energy Storage Systems to help reduce electricity costs and Scope 2 emissions; EV Fleet & Charging Solutions, covering electric fleet management and electric truck charging stations to help reduce Scope 1 emissions; and Energy Efficiency that support energy management and improve overall energy efficiency, such as smart Chiller Systems, which can help reduce both Scope 1 and Scope 2 emissions. Banpu NEXT’s Net Zero Solutions help businesses reduce carbon emissions sustainably, turn carbon-related tax costs into greater competitive potential, and accelerate their Net Zero goals.

Carbon Tax is a mandatory cost of doing business that can affect both the cost structure and competitiveness of Thai companies. Preparing today by managing carbon footprints, improving energy efficiency, and accelerating the transition to clean energy is therefore essential to reducing future tax burdens, creating sustainable business growth opportunities, and advancing toward Net Zero goals.

Contact us – Banpu NEXT

 

Frequently Asked Questions (FAQ)

Q1: Which businesses were initially subject to Thailand’s Carbon Tax?

In the initial phase (2025), the Excise Department began applying a Carbon Tax to oil and petroleum products. As a result, businesses involved in production, distribution, and consumption of fossil fuels were among the first to be affected. The measure was implemented by restructuring the existing petroleum excise tax rates to reflect the amount of GHG emissions associated with these products. In the future, the carbon pricing framework is expected to expand to other products and industries in line with the framework of Thailand’s Draft Climate Change Act.

Q2: When is Thailand’s Carbon Tax expected to be fully implemented?

Currently, Thailand has not yet fully implemented a Carbon Tax, and no definitive date has been officially announced. Thailand is in a transition period between interim measures and the establishment of a permanent legal framework. However, carbon taxation has already been introduced for certain sectors. Since fiscal year 2025, the Excise Department has begun incorporating a carbon tax into the excise tax structure for oil and petroleum products as the first group covered by the measure. The full legal framework is still under development, and the draft legislation must go through several stages of consideration. A comprehensive carbon tax system is expected to be introduced alongside the Climate Change Act, which was approved in principle by the Cabinet in late 2025.

Q3: How can installing a solar power system reduce an organization’s carbon tax burden?

Installing solar power systems for factories or businesses helps replace electricity purchased from the grid, thereby reducing the organization’s Scope 2 emissions. Although electricity users may not be charged a carbon tax directly on their electricity consumption, carbon-related costs from power generation can be passed through in electricity prices. Generating electricity on-site from clean energy can therefore help reduce both electricity expenses and embedded carbon-related costs, while also lowering the organization’s overall carbon footprint.

Q4: What risks do business face if they fail to prepare for the carbon tax?

Businesses may face higher tax-related costs once carbon regulations are fully implemented, which could increase product prices and make it more difficult to compete in the global market. They may also risk losing orders from international business partners that impose ESG requirements and carbon reduction targets across their supply chains. In addition, exporters to the EU may face further cost and compliance risks under CBAM.