Taiwan Sent Its First Carbon Bill. Semiconductors Paid 44% of It.

Taiwan has run a full cycle of its carbon fee and published who paid.

The first collection closed on 1 June 2026, covering emissions from 2025. 461 facilities, operated by 240 companies, paid NT$4.97 billion, about US$158 million. All of them paid in full. No company asked for an extension or an instalment plan.

Semiconductors accounted for about NT$2.2 billion of that, or 44.3%. Power supply was second at 12.77%. Chemical materials manufacturing was 10.97%, steel 8.06%, petroleum and coal products 4.83%, cement 2.61%.

Three smaller lines are also electronics: printed circuit boards at 2.45%, other electronic parts and components at 1.48%, and optoelectronic materials and components at 1.40%. Added to the semiconductor share, electronics manufacturing comes to just under half of everything Taiwan collected.

The fee is charged on facilities, not on companies

Taiwan’s carbon fee sits under the Climate Change Response Act. It applies to facilities emitting at least 25,000 tonnes of CO2 a year, concentrated in power, gas supply and manufacturing. Covered entities calculate and pay each year before the end of May, based on the previous year’s emissions. The 2026 deadline fell on a Sunday, so the final day was 1 June.

461 facilities belong to 240 companies. A single group can hold several liabilities, each with its own emissions profile and its own reduction plan attached. A company does not receive one carbon bill. It receives one per qualifying site, assessed separately.

Advanced logic and memory fabs are individually large electricity consumers, and a company running several of them sits inside the scheme several times over.

Semiconductors paid the largest share because of how fabs consume energy

A fab’s emissions come from continuous electricity demand for tools, cleanrooms and chilled water, plus process gases used in etch and deposition.

Climate policy has tended to organise itself around steel, cement and oil. The chip industry carried more than five times the share that steel did.

Taiwan has also put a per-tonne charge on the physical layer underneath artificial intelligence, and collected it. Model training and inference are usually discussed in terms of data centre power, which is measured separately. Fabrication sits upstream of the data centre.

The first bill priced emissions that were already complete

The amount due is the facility’s reported emissions multiplied by its applicable rate. Payment runs a year behind. The cycle that settled on 1 June 2026 covered emissions from 2025, so the tonnes being charged for were finished before the bill arrived.

The second cycle is accruing now. Emissions made during 2026 set the amount due by the end of May 2027, and the reduction plan a facility is working to this year is what decides which rate applies to them.

Most facilities paid less than the standard rate

The standard rate is NT$300 per tonne of CO2e. Most covered facilities did not pay it.

Taiwan offers two preferential rates. Rate A is NT$50 per tonne, for facilities adopting the industry-specific designated reduction rate. Rate B is NT$100, for facilities adopting the technology benchmark route. Both require an approved self-determined reduction plan.

In the first cycle, 64 facilities were on Rate A and 338 were on Rate B. More than five times as many facilities took the NT$100 route as the NT$50 one. The regulator has approved 402 plans in total, and preliminarily estimates they will deliver 47.45 million tonnes of reduction by 2030.

The headline rate therefore applied to a minority of facilities in scope, and the effective rate across the scheme sits well below NT$300.

The discount is conditional and can be collected back

The preferential rate is not granted once. In the regulator’s words, only entities whose progress meets requirements may apply the preferential rate for that year. Where an audit finds that a plan was not implemented as approved, the authority will retroactively collect the difference between the standard rate and the preferential rate for that year.

A facility on Rate B is paying NT$100 and carrying exposure to NT$300 for as long as the plan is open and unverified. For a finance function that is a contingent liability, and the reduction plan is a document with money attached to its delivery.

The total came in above the ministry’s projection

The Ministry of Environment had projected roughly NT$4.5 billion and collected NT$4.97 billion.

Part of the difference came from the discount process. 430 factories applied for a preferential rate. Some applications were later withdrawn and some were rejected, which left those facilities paying the standard NT$300.

The two published counts give the size of that group. 430 facilities applied and 402 plans were approved, so 28 applicants finished the cycle without a discount. On the same arithmetic, 59 of the 461 paying facilities were charged the full NT$300.

Under Article 33 of the Act, the revenue is earmarked for greenhouse gas reduction and climate change adaptation work, allocated after deliberation by the Greenhouse Gas Management Fund Management Committee. Listed uses include subsidies for reduction and adaptation measures, interest subsidies and credit guarantees for net-zero transition loans, and a just transition programme run with the National Development Council.

Taiwan and Korea price the same industry in opposite directions

Korea approved its Phase 4 emissions trading plan for 2026 to 2030 in November 2025.

Korea keeps semiconductors on 100% free allocation as a carbon-leakage sector, and tightens the benchmark behind that 100% instead, moving the coefficient from the top 37% of performers to the top 20%. Taiwan charges the sector directly and has collected from it.

Korea is protecting a trade-exposed sector while sharpening the comparison inside it. Taiwan has decided the sector can absorb a price. Korea’s instrument is a cap-and-trade scheme that issues allowances. Taiwan’s is a fee with a published rate.

For a company operating in both, the practical consequence is the same. Both schemes run on verified, facility-level activity data, assessed against a formula that can be revised. Taiwan’s audit power reaches backwards into years already paid. Korea’s benchmark reaches forward into allocations not yet issued.

What a covered group should do with this

Know which of your sites are separately liable, and treat each as its own exposure. A group-level emissions figure will not tell you what you owe when the charge is assessed per facility.

Track delivery against an approved reduction plan the way you would track a covenant. The difference between NT$100 and NT$300 is recoverable by the regulator for the year in question.

Expect customers to ask before the regulator does. A fab’s carbon cost is now a documented line item in one of the jurisdictions that matters most to the semiconductor supply chain.

Work on the current year rather than the last one. The 2026 cycle is already accruing against emissions being made now, and the rate applied to it depends on a plan that has to be delivered, not filed.

Tech for Impact Summit 2027 runs on 18 and 19 May 2027 at the United Nations University in Tokyo, co-hosted by UNU. Senior leaders from business, policy and capital spend two days on questions of this kind. Participation is by invitation. If this is the work you do, ask us for one at tech4impactsummit.com/apply.