In the past, when companies talked about cutting carbon, it usually fell under social responsibility or brand image. After 1 January 2026, for some companies exporting to Europe, carbon is no longer just a figure in a report; it becomes a cost that travels through customs along with the product.
The EU’s Carbon Border Adjustment Mechanism (CBAM) entered its transitional phase in 2023 and takes full effect in 2026. It requires EU importers to declare the carbon emissions embedded in certain goods — cement, iron and steel, aluminium, fertilisers, electricity and hydrogen — and to bear the corresponding carbon cost. The first formal declaration covering 2026 import emissions, together with the surrender of certificates, is due by 30 September 2027.
The name of the mechanism is long, but the logic is not complicated: if companies inside the EU have to pay for their emissions, imported goods cannot escape carbon costs entirely simply because they were produced elsewhere.
The question is not “do you do ESG”
CBAM most directly affects the listed products, but the changes it brings will not stop at those six categories. Once large companies have to account clearly for the carbon content of their products, they will ask their upstream suppliers for data on materials, processes and energy. Pressure that once concerned only tier-one suppliers will be passed down, layer by layer, to small and medium-sized enterprises.
What customers really want to know is not how many beach clean-ups a company has organised, or how attractive its sustainability report looks, but: how much electricity went into this shipment? Where did that electricity come from? What are the emission factors for the raw materials? Can the data be verified?
This matters especially for Taiwan. Taiwanese industry is highly dependent on exports and global supply chains, and many small and medium-sized enterprises may not sell directly into the EU, yet they may sit upstream of international brands or large manufacturers. Carbon management capability is gradually shifting from a bonus point to a condition for winning orders.
Carbon fees, carbon taxes and CBAM are not the same thing
When facing all these different mechanisms, the easiest mistake is to mix up the terms. A carbon tax is usually levied by the government according to emissions; an emissions trading system sets an overall cap and allows allowances to be traded; CBAM adjusts the carbon cost borne by imported products at the border. All of them put a price on carbon, but they differ in who they apply to, how they are calculated, and what legal obligations they create.
Companies that simply want to “buy carbon credits to offset it” may also be answering the wrong question. CBAM is concerned with the emissions embedded in a product and the carbon price already paid in the country of origin; buying a batch of voluntary carbon credits does not automatically offset all obligations.
Three places small businesses can start
First, find out whether your customers and products are likely to fall within a CBAM supply chain. Second, build up energy and process data, rather than scrambling for numbers only when a customer sends a form. Third, treat energy-saving and low-carbon equipment as a business investment, and assess the payback period, financing options and the benefit for securing orders.
Cutting carbon has never been the job of the environmental department alone. Procurement decides the materials, production decides the energy use, finance decides the equipment investment, and sales is the first to feel what customers are asking for. Without cross-departmental cooperation, even the most thorough carbon inventory is just a file.
Carbon is now clearing customs, which means the rules of international trade are being rewritten. For Taiwanese businesses, the real risk is not that carbon has a price, but that when customers ask, we still do not know where our carbon is.
References
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European Commission, official guidance on the Carbon Border Adjustment Mechanism, updated to 2026.
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European Commission, implementation guidance for the CBAM definitive period, 14 August 2026.
