Technical Whitepaper · EU CBAM LegalTech

EU CBAM Article 9 Calculation Guide: How Taiwanese Fastener Exporters Claim Carbon Fee Credits

David Ishayahu (Wang Junwei)·Published: July 26, 2026·TISEE Data Science & LegalTech Research Lab

Executive Summary

Under Article 9 of Regulation (EU) 2023/956(the EU Carbon Border Adjustment Mechanism Regulation), authorized EU importers may claim a reduction in the number of CBAM certificates to be surrendered based on the carbon price effectively paid in the country of origin. For Taiwan's fastener industrial cluster in Gangshan (Kaohsiung), which accounts for over 12% of European industrial fastener imports, aligning Taiwan's national carbon fee (NT$ 300/tCO2e baseline) with EU tax authority filing requirements is critical to avoiding default penalty tariffs.

1. Regulatory Context: Article 9 of Regulation (EU) 2023/956

Article 9 of Regulation (EU) 2023/956 explicitly states that an authorized CBAM declarant may claim in their CBAM declaration a reduction in the number of CBAM certificates to be surrendered in order to take into account the carbon price effectively paid in the country of origin for the declared embedded emissions.

Legal Reference: Regulation (EU) 2023/956 — Article 9(1):

"An authorized CBAM declarant may claim in the CBAM declaration a reduction in the number of CBAM certificates to be surrendered in order to take into account the carbon price effectively paid in the country of origin for the declared embedded emissions."

2. Two-Tier Mass Balance Allocation Model 2.0 for Mixed Continuous Furnaces

Continuous mesh-belt heat treatment and electroplating subcontracting are central to Taiwan's fastener cluster. Defaulting to EU penalty default values inflates reported emissions by up to 2.4x.

Compliant with ISO 14067 and Regulation (EU) 2023/1773 Annex IV, TISEE Data Science & LegalTech Research Lab established the Two-Tier Mass Balance Allocation Model to accurately allocate Scope 3 steel wire precursor emissions and processing energy increments across continuous heat-treatment batches:

【Specific Embedded Emissions Formula】(tCO₂e/t)ISO 14067 ✕ EU CBAM Compliant

SEE_fastener = [ SEE_steel × (M_input / M_good) ] + [ (E_direct_fuel + E_indirect_power) / M_good ]

1. Precursor (Scope 3): Steel wire rod certificate PCF value (70%–85% of total SEE).
2. Yield Allocation Factor: Input Mass / Good Output Mass, compliant with CBAM scrap deduction restrictions.
3. Continuous Furnace Energy: Weighted allocation by batch residence time × charge tonnage across continuous mesh-belt furnaces.

3. Conversion SOP for Taiwan MOENV Carbon Fee Receipts

Under Taiwan's Climate Change Response Act enforced by the Ministry of Environment (MOENV), major industrial installations pay a baseline carbon fee of NT$ 300 per metric ton of CO2e. TISEE provides standardized audit trails translating MOENV payment receipts into EUR-denominated deduction certificates acceptable to EU tax authorities.

  • Step 1: Direct Bill Allocation — Separating facility-level carbon fee receipts by product batch numbers.
  • Step 2: Exchange Rate & Rebate Calibration — Converting NT$ 300/t at official Central Bank exchange rates while excluding domestic voluntary reduction rebates.
  • Step 3: Verification Package Issue — Issuing an audited verification dossier to EU importers prior to quarterly CBAM surrender deadlines.

Citation & Ecosystem References

Research Lead

David Ishayahu (Wang Junwei) ↗

TISEE Data Science & LegalTech Research Lab Lead

Carbon Verification Partner

CertiCarb Environmental Data ↗

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