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CBAM · EU CARBON BORDER ADJUSTMENT MECHANISM · DEFINITIVE PHASE LIVE FROM 1 JANUARY 2026 · 50-TONNE THRESHOLD · 6 SECTORS
Anchored by Nataree Aussapim · EU Disclosure Lead · First certificate surrender 30 Sept 2027
★ CBAM DEFINITIVE PHASE · 6 SECTORS · 50-TONNE THRESHOLD · 90% IMPORTERS EXEMPT · 99% EMISSIONS STILL COVERED

The world’s first carbon border tariff is now live.

The EU Carbon Border Adjustment Mechanism (CBAM) is the world’s first carbon border tariff — designed to prevent “carbon leakage” by ensuring imports of carbon-intensive goods face a carbon cost equivalent to what EU-domestic producers pay under the EU Emissions Trading System (EU ETS). The transitional reporting-only phase ran 1 October 2023 to 31 December 2025. The definitive phase — with full financial obligations — began 1 January 2026. Originally Regulation (EU) 2023/956 of 10 May 2023; substantially simplified by Regulation (EU) 2025/2083 (the “CBAM Omnibus”), in force 20 October 2025, with implementing acts published 17 December 2025. Key Omnibus change: a single 50-tonne mass-based exemption threshold per importer per year (replacing the previous €150 per consignment value threshold) — exempting approximately 90% of EU importers while still covering ~99% of embedded emissions. Six sectors covered: cement, iron and steel, aluminium, fertilisers, electricity, hydrogen (with selected precursors). Hydrogen and electricity are NOT eligible for the 50-tonne exemption. First certificate-surrender deadline: 30 September 2027 for FY2026 imports. Phase-in mirrors the EU ETS free-allocation phase-out through 2034. For Thai exporters of steel, aluminium, cement, fertilisers, and hydrogen with EU buyer relationships, CBAM is now an operating commercial constraint, not a future regulatory project. Othello’s bench is configured for the post-Omnibus reality — Nataree Aussapim anchors the EU-side compliance work, paired with Panit Chancharoonpong’s TGO CFP and ISO 14064 Lead Auditor credentials for the embedded-emissions verification side.

Definitive Phase
2026
From 1 January · financial obligations
Sectors Covered
6
Cement · Steel · Aluminium…
De Minimis Threshold
50t/yr
Mass-based · per importer
Coverage Retained
99%
Of embedded emissions still in
★ CREDENTIAL POSTURE · HONESTLY SCOPED
CBAM compliance. Bench-anchored work.
  • RegulatorEU Commission / DG TAXUD
  • Bench anchorNataree A. · EU Lead
  • Regulation(EU) 2023/956 · 2025/2083 amend
  • PhaseDefinitive · from 1 Jan 2026
  • First surrender30 Sep 2027 · FY2026
  • Honest scopeCompliance prep work
  • Pairs withTGO · ISO 14064 · ISCC
★ §01 · Transitional → Definitive Phase Shift · Live From 1 January 2026

From reporting-only to financial obligations. The first carbon border tariff is operating.

CBAM ran in transitional phase from 1 October 2023 to 31 December 2025 — reporting only, no financial obligations. From 1 January 2026, the definitive phase is live: authorised CBAM declarants must surrender CBAM certificates corresponding to embedded emissions of imported CBAM goods, with the first certificate-surrender deadline of 30 September 2027 for FY2026 imports. Regulation (EU) 2025/2083 — the “CBAM Omnibus” — entered into force 20 October 2025, introducing the 50-tonne mass-based exemption threshold and several operational simplifications. Implementing acts published 17 December 2025. The phase-in of CBAM certificate purchase obligations mirrors the EU ETS free-allocation phase-out through 2034 — meaning CBAM’s financial bite increases progressively over nine years as ETS free allocation winds down.

DEFINITIVE PHASE · LIVE 1 JAN 2026

Definitive phase obligations.

Financial obligations now operating · first surrender 30 Sept 2027.

From 1 January 2026, importers of CBAM-covered goods exceeding the 50-tonne threshold must be authorised CBAM declarants and surrender CBAM certificates corresponding to embedded emissions. Certificate price tracks EU ETS allowance average; certificates for 2026 imports will be priced using the average 2026 EU ETS allowance value, sold through the EU central platform from February 2027. No certificate purchases are required during 2026 itself — only the surrender obligation for 2026 imports falling due 30 September 2027. Authorised declarants register with the competent authority of the Member State of establishment; the transitional rule lets importers continue importing through 2026 if they apply for authorised-declarant status by 31 March 2026, even pending authority decision.

Definitive phase obligations, post-Omnibus
  • Authorised CBAM declarant status (if above threshold)
  • Annual CBAM declaration of imported goods + emissions
  • Surrender CBAM certificates by 30 September each year
  • Embedded-emissions verification (actual or default values)
  • Adjustment for free allocation under EU ETS phase-out
  • Adjustment for carbon price paid in country of origin
PHASE 01 · CONCLUDED 31 DEC 2025

Transitional phase.

Reporting-only · no financial obligations · ran 27 months.

The transitional phase ran 1 October 2023 to 31 December 2025 — 27 months of reporting-only obligations during which CBAM-importers submitted quarterly CBAM reports on embedded emissions of covered goods, but were not required to purchase or surrender certificates. Default values were widely permitted during transitional; many EU importers’ first encounter with embedded-emissions data was during this window. The transitional reports built the data backbone the European Commission used to refine the definitive-phase regulation, including identifying that the €150 value-based threshold was operationally cumbersome — replaced by the 50-tonne mass threshold under the Omnibus.

CONCLUDED 31 DEC 2025 Reporting-only 27 months
OMNIBUS · IN FORCE 20 OCT 2025

50-tonne simplification.

~90% importers exempt · ~99% emissions still covered.

Regulation (EU) 2025/2083 — the CBAM Omnibus — entered into force 20 October 2025, replacing the previous €150 per consignment value-based threshold with a single 50-tonne cumulative net mass per importer per year threshold. Hydrogen and electricity are explicitly excluded from the threshold — full CBAM applies regardless of mass. European Commission estimate: ~90% of importers are now exempt while ~99% of embedded emissions remain covered — targeting the regulation at the high-volume importers where the carbon-leakage prevention rationale is strongest. The Omnibus also reduced compliance friction (delegation to third parties with EORI registration; longer lead times; reuse of last year’s verified data).

Reg (EU) 2025/2083 50-TONNE THRESHOLD H2 + electricity excluded

THE THRESHOLD CHANGE DOES NOT REMOVE THE CARBON COST · For Thai-exporter-bound EU importers above the 50-tonne threshold, CBAM remains a substantive financial obligation increasing over nine years as EU ETS free allocation phases out through 2034. The 50-tonne threshold removes small occasional traders, not the major Thai-EU steel, aluminium, cement, and fertiliser trade flows. For Thai exporters in covered sectors, the strategic question is no longer “will CBAM apply?” but “what embedded-emissions verification approach minimises CBAM cost to our EU buyer?”

★ §02 · The Six CBAM Sectors · Thai Supply Chain Exposure

Six sectors. Four Thai-relevant. Two not eligible for the 50-tonne exemption.

CBAM covers six sectors at definitive-phase launch: cement, iron and steel, aluminium, fertilisers, electricity, hydrogen — with selected precursors (cement clinker, nitric acid, ferrosilicon, unwrought aluminium) included. Hydrogen and electricity are NOT eligible for the 50-tonne exemption; all imports remain subject to CBAM regardless of mass. For Thai-EU trade flows, the substantively relevant sectors are iron and steel (Thai steelmakers, downstream auto parts), aluminium (Thai smelters, alumina), cement (Thai cement majors with EU exposure), and fertilisers (Thai potash, urea, phosphate exports). Hydrogen exposure is currently nascent for Thai producers but will grow as Thai green-hydrogen projects come online.

01
SECTOR · CEMENT

Cement

Including cement clinker as precursor.

Cement is one of the highest-embedded-emissions CBAM sectors per tonne, driven by the calcination CO2 release during clinker production. Cement-clinker imports are covered as a precursor to ensure CBAM is not avoided by importing semi-finished cement. Process emissions account for the largest share; energy emissions secondary. EU domestic producers benefit from EU ETS pricing on their cement output.

Thai supply chain
SCG (Siam Cement Group), TPI Polene · major Thai-EU cement and clinker exports. 50-tonne threshold rarely binds at this trade scale.
02
SECTOR · IRON & STEEL

Iron & Steel

Including ferrosilicon precursor + downstream products.

Iron and steel is the highest-emissions CBAM sector by volume of EU imports. Coverage includes downstream steel products (screws, bolts, structural steel) and key precursors (ferrosilicon) to prevent value-chain CBAM avoidance. EAF (electric arc furnace) steel has substantially lower embedded emissions than blast-furnace steel; the verification approach matters commercially for Thai exporters.

Thai supply chain
SSI, Tata Steel Thailand, Sahaviriya Steel · Thai steel and downstream steel-products exports. Auto-parts supply chain to EU OEMs is substantively exposed.
03
SECTOR · ALUMINIUM

Aluminium

Including unwrought aluminium precursor.

Aluminium production is highly electricity-intensive — embedded emissions depend dramatically on the grid emission factor of the producing country. Smelters powered by hydropower or nuclear have substantially lower embedded emissions than coal-grid smelters. Coverage includes unwrought aluminium as precursor and selected downstream aluminium products. The verification approach (actual vs default values) substantially affects CBAM cost.

Thai supply chain
Thai aluminium downstream · rolled, extruded, fabricated. Thailand’s grid emission factor is mid-tier — not as low as hydro-grids but lower than coal-grids.
04
SECTOR · FERTILISERS

Fertilisers

Including nitric acid precursor.

Nitrogen fertilisers carry high embedded emissions from ammonia synthesis — the Haber-Bosch process is energy-intensive and a major industrial CO2 source. Nitric acid (used for ammonium nitrate fertiliser production) is covered as a precursor. Urea, ammonium nitrate, calcium ammonium nitrate, NPK compound fertilisers all in scope. Coverage includes both nitrogen content and the embedded emissions of the production process.

Thai supply chain
Thai PTT Group fertiliser operations · ammonia, urea, NPK. EU exposure is moderate but growing with Thai agricultural-input exports diversification.
05
SECTOR · ELECTRICITY NO 50T

Electricity

Not eligible for 50-tonne exemption.

Electricity imports into the EU are covered regardless of volume — the 50-tonne mass-based exemption does not apply. Embedded emissions calculated based on the electricity exporter’s grid emission factor or specific generation asset. Cross-border electricity trade is concentrated within the European interconnected grid; non-European electricity imports are limited but growing in specific corridors (UK-EU, Morocco-Spain, Western Balkans).

Thai supply chain
Not directly Thai-exposed · no Thai-EU electricity trade. Relevant indirectly via electricity embedded in aluminium and steel.
06
SECTOR · HYDROGEN NO 50T

Hydrogen

Not eligible for 50-tonne exemption.

Hydrogen imports are covered regardless of volume — the 50-tonne exemption does not apply. Embedded emissions depend on production pathway: grey hydrogen (from natural gas reforming) has high emissions; blue hydrogen (with CCS) lower; green hydrogen (electrolysis from renewable electricity) near-zero. The CBAM-cost differential by production pathway is substantively decisive for EU buyers selecting suppliers. Thai green-hydrogen exports to EU are currently nascent but projected to grow as Thai Power-to-X projects scale.

Thai supply chain
Future-state · Thai green-hydrogen projects in development. Pairs with ISCC PLUS for the renewable-energy-derived materials category.

SCOPE EXPANSION IS ON THE CALENDAR · The European Commission is reviewing CBAM scope expansion to additional sectors — under consideration: organic chemicals, polymers, downstream products in already-covered sectors. A 2027-2028 expansion announcement is widely anticipated, with implementation typically following 12-24 months later. Thai exporters in chemicals, polymers, and downstream metal products should treat CBAM-readiness work as forward-looking rather than current-only — the regime is designed to expand.

★ §03 · How Othello Runs CBAM Compliance Preparation · Six Stages

Six stages. Scope determination to certificate surrender.

A CBAM compliance engagement at Othello runs six documented stages — from initial scope determination through embedded-emissions verification to the annual certificate-surrender preparation. The work is consultative: on the Thai-exporter side (helping the producer assemble embedded-emissions data the EU importer needs) or on the EU-importer side (helping the importer manage authorised-declarant obligations and certificate-surrender preparation). Most Thai-exporter CBAM engagements are commissioned by the EU buyer — the EU importer wants verified embedded-emissions data from the Thai producer to minimise CBAM cost. The chain: EU buyer asks Thai producer for embedded-emissions data → Thai producer engages Othello (or works through buyer-engaged Othello) → Othello assembles verified data → EU importer files annual CBAM declaration.

★ DEFINITIVE PHASE LIVE · CONSULTATIVE SIDE · CBAM-READY OUTPUTS

From scope determination to verified data ready for EU CBAM declaration. One workflow.

How a Thai cement, steel, aluminium, or fertiliser exporter prepares the embedded-emissions data its EU buyers need under the definitive-phase CBAM regime. The output is a verified embedded-emissions dataset that the EU CBAM declarant can use in its annual declaration — reducing CBAM cost relative to default-value reporting. See Our Process for the broader bench discipline.

STAGE 01
Scope determination · sector + product classification + threshold testing.The first stage tests whether the Thai exporter’s products are in CBAM scope — sector classification (cement / iron and steel / aluminium / fertilisers / electricity / hydrogen), Combined Nomenclature (CN) code mapping, precursor identification, and product-by-product threshold testing. The 50-tonne threshold is calculated per importer per year, not per producer or per shipment — meaning the same Thai producer can have above-threshold and below-threshold EU customer relationships. The output is a CN-code-by-CN-code scope memorandum identifying which Thai-EU trade flows require CBAM-compliant emissions data and which fall below threshold.
STAGE 02
Authorised declarant coordination · EU importer side.Where Othello supports the EU importer side, Stage 02 coordinates authorised CBAM declarant registration with the competent authority of the Member State of establishment. Transitional relief: importers who apply by 31 March 2026 can continue importing through 2026 pending decision. EORI registration confirmation; designated CBAM declarant officer; potential delegation to a third party with EORI registration permitted under the Omnibus. Where Othello supports the Thai producer side only, Stage 02 is monitoring — confirming the EU buyer’s declarant status to ensure smooth quarterly + annual data exchange.
STAGE 03
Embedded-emissions data assembly · actual vs default values decision.The substantive stage: assembling verified embedded-emissions data per CBAM methodology. Two options: actual values (production-site specific emissions, requires accredited verification) or default values (Commission-published, no verification required but typically higher than actual). For most Thai exporters, actual values produce lower CBAM cost than defaults — making the verification investment commercially worthwhile. The bench draws on Panit Chancharoonpong’s TGO CFP Auditor and ISO 14064 Lead Auditor credentials for the substantive emissions accounting work. Where ISCC PLUS certification is in place, the chain-of-custody data substantially feeds the CBAM emissions backbone.
STAGE 04
Verification by accredited verifier · ISO 14065 + EU-specific accreditation.Actual-value embedded emissions require verification by a CBAM-accredited verifier — an organisation accredited to ISO 14065 with additional EU CBAM-specific accreditation per the implementing acts. The verifier reviews production processes, emissions factors, monitoring methodologies, and data integrity per CBAM Annex IV requirements. Othello is not a CBAM-accredited verifier — verification is conducted by a separately engaged accredited body (TUV, SGS, DNV, Bureau Veritas, others with CBAM accreditation). Othello’s role is preparing the data and documentation for efficient verification; the verifier provides the independent verification opinion the EU importer needs.
STAGE 05
Annual CBAM declaration preparation · EU importer side.The EU importer files the annual CBAM declaration by 31 May each year for the preceding calendar year’s imports. Declaration includes: imported quantities by CN code, verified embedded emissions, carbon price already paid in country of origin (if any, for adjustment), and CBAM certificates required for surrender. Where Othello supports the EU importer side, Stage 05 assembles the declaration package from the verified data assembled in Stages 03-04, coordinates internal review and management sign-off, and submits via the EU CBAM Registry. The Thai-exporter side typically supports with supplementary data on request from the importer’s CBAM declarant.
STAGE 06
Certificate surrender · 30 September annual deadline.The CBAM certificate surrender deadline is 30 September each year for the preceding calendar year’s imports. For FY2026 imports, first surrender deadline is 30 September 2027. Certificates are purchased via the EU central platform from February 2027 (for FY2026 imports). Certificate price tracks EU ETS allowance average; certificate quantity tracks verified embedded emissions adjusted for free allocation (under EU ETS phase-out through 2034) and carbon price already paid in country of origin. For Thai producers, the financial impact lands on the EU importer’s CBAM certificate purchase cost — but commercial pressure flows back to producers via supply contract pricing and supplier selection. Annual cycle compounds.

VERIFICATION IS WHERE OTHELLO SCALES · Othello is not a CBAM-accredited verifier — verification is conducted by separately engaged accredited bodies (ISO 14065 + EU CBAM-specific accreditation). What Othello does: assembles the embedded-emissions dataset, documents methodologies, prepares for verification, and helps Thai producers minimise CBAM cost to their EU buyers. The competence lives where Panit’s TGO CFP + ISO 14064 + Verra credentials meet Nataree’s EU disclosure work — one bench, two anchors, one substantively scoped engagement letter per client.

★ §04 · The Standards Stack Behind CBAM

Six layers. One carbon-border regime.

CBAM sits at the intersection of EU climate policy, customs administration, emissions verification, and global carbon-market interoperability. The six layers below are what makes the regime operationally meaningful for Thai exporters and their EU buyers — EU regulator authority, EU ETS price linkage, ISO 14064 + 14065 emissions methodology, accredited verifier infrastructure, TGO + Thai T-VER linkage, and ISCC PLUS chain-of-custody data backbone.

STD 01 · REGULATOR

European Commission DG TAXUD.

The European Commission’s Directorate-General for Taxation and Customs Union (DG TAXUD) administers CBAM, in coordination with DG CLIMA on the climate-policy side. Original regulation: Regulation (EU) 2023/956 of 10 May 2023. Amendment: Regulation (EU) 2025/2083 (CBAM Omnibus), in force 20 October 2025. Implementing acts published 17 December 2025. National competent authorities of EU Member States administer authorised-declarant registration and oversight; the EU central platform handles certificate sales and surrender.

BodyEC DG TAXUD
Regulation(EU) 2023/956
Amendment(EU) 2025/2083
STD 02 · EU ETS LINK

EU ETS price tracker.

CBAM certificate price is linked to the EU Emissions Trading System (EU ETS) — certificates for a given year’s imports are priced using the average EU ETS allowance value of that year. This ensures CBAM cost equals EU domestic carbon cost, neutralising the carbon-leakage incentive that motivated CBAM in the first place. EU ETS free allocation to domestic producers is being phased out through 2034; CBAM certificate purchase obligations phase in correspondingly, reaching full coverage in 2034. Thai exporters’ CBAM cost trajectory tracks the ETS phase-out curve.

Price trackerEU ETS
Phase-inThrough 2034
MirrorsETS free alloc phase-out
STD 03 · GHG METHODOLOGY

ISO 14064 methodology floor.

CBAM’s embedded-emissions calculation methodology is structurally aligned with ISO 14064-2 (project-level GHG quantification) and ISO 14064-3 (verification methodology). For Thai producers, an existing ISO 14064 inventory can substantially feed the CBAM embedded-emissions assembly — methodology choices, monitoring requirements, and verification approaches map closely. Panit’s CQI/IRCA ISO 14064 Lead Auditor credential is directly relevant for preparing the embedded-emissions dataset to verification-ready standard. See /certifications/iso-14064/.

StandardISO 14064-2/3
Othello credCQI/IRCA Lead Auditor
Pairs withCBAM Annex IV
STD 04 · ACCREDITED VERIFIER

ISO/IEC 17029 + 14065 accreditation.

CBAM verification bodies are accredited to ISO/IEC 17029 (general principles for validation and verification bodies) and ISO 14065 (GHG validation and verification bodies), with additional EU-specific CBAM accreditation per the implementing acts. Major accredited verifiers in Southeast Asia: TUV, SGS, DNV, Bureau Veritas, AmSpec, others — the same accreditation infrastructure already operating for ISCC, Verra, and CORSIA verification. Othello is not a CBAM-accredited verifier; verification is engaged separately. Othello prepares the data and documentation to verification-ready standard.

AccreditationISO 17029 + 14065
Othello roleData preparation
VerifierSeparately engaged
STD 05 · TGO + T-VER

Thai carbon-price adjustment.

CBAM permits adjustment for carbon price already paid in the country of origin — reducing the EU importer’s CBAM certificate purchase requirement. For Thai producers, this means a domestic Thai carbon price (currently nascent but developing via T-VER and the proposed Thai ETS) can be netted off CBAM exposure. Panit’s TGO CFO + CFP Auditor credential is directly relevant — the TGO Carbon Footprint Organisation programme produces the verified emissions data the carbon-price adjustment calculation requires. See /certifications/tgo/.

AuthorityTGO (Thailand)
MechanismT-VER, future Thai ETS
CBAM impactAdjustment reduces cost
STD 06 · ISCC CHAIN-OF-CUSTODY

ISCC PLUS data backbone.

For Thai exporters in iron-and-steel and aluminium with ISCC PLUS certification covering chain-of-custody for bio-circular or circular materials, the ISCC PLUS data substantially feeds CBAM embedded-emissions assembly. ISCC PLUS already verifies production-level GHG data with chain-of-custody mass-balance; the structural alignment with CBAM Annex IV is substantial. Panit’s ISCC PLUS applied competence credential sits at this intersection — bridging the bioeconomy materials work with the EU regulatory disclosure work. See /certifications/iscc/.

StandardISCC PLUS
RoleData backbone
Pairs withCBAM Annex IV

THE STACK IS WHY OTHELLO’S BENCH FITS CBAM · CBAM operates at the intersection of EU regulatory disclosure (Nataree’s territory), GHG methodology (Panit’s ISO 14064 + TGO territory), and chain-of-custody data architecture (Panit’s ISCC PLUS territory). No other Bangkok ESG advisory firm has this credential convergence in-house — the configuration is what makes Othello’s CBAM compliance preparation work substantively defensible across the embedded-emissions verification, EU regulatory disclosure, and Thai carbon-price adjustment dimensions simultaneously.

★ Adjacent · Where CBAM Connects Across The Practice

CBAM bridges Nataree’s EU work and Panit’s carbon credentials.

CBAM is the second of Nataree Aussapim’s five EU & Cross-Border Disclosure anchors — alongside CSRD/ESRS, EU Taxonomy, TCFD, and SBTi. Uniquely, CBAM also requires substantive integration with Panit’s seven-credential ESG-assurance cluster — particularly TGO, ISO 14064, and ISCC PLUS, all of which feed the embedded-emissions verification work CBAM requires. For Thai cement, steel, aluminium, fertiliser, and hydrogen exporters, the CBAM engagement is structurally cross-Domain: EU regulatory + Thai carbon authority + international GHG methodology + materials chain-of-custody, all in one substantive work package.

★ CBAM FAQ · Ten Procurement Questions

Procurement questions answered up front.

Substantive answers to what Thai cement, steel, aluminium, fertiliser, and hydrogen exporters — and their EU buyers — routinely ask about post-definitive-phase CBAM compliance.

Q.01What is CBAM and what changed when the definitive phase started?

The EU Carbon Border Adjustment Mechanism (CBAM) is the world’s first carbon border tariff, designed to prevent “carbon leakage” by ensuring imports of carbon-intensive goods face a carbon cost equivalent to what EU-domestic producers pay under the EU Emissions Trading System (EU ETS). Original regulation: Regulation (EU) 2023/956 of 10 May 2023. The transitional reporting-only phase ran 1 October 2023 to 31 December 2025. The definitive phase began 1 January 2026: importers exceeding the 50-tonne threshold must be authorised CBAM declarants and surrender CBAM certificates corresponding to embedded emissions. The first certificate-surrender deadline is 30 September 2027 for FY2026 imports. Regulation (EU) 2025/2083 (CBAM Omnibus), in force 20 October 2025, introduced the 50-tonne exemption threshold and operational simplifications.

Q.02What does Nataree’s “EU Disclosure Lead” anchor on CBAM actually mean?

Honest scoping: Nataree Aussapim anchors Othello’s consultative CBAM compliance preparation work — it is not an EU-conferred practitioner credential. CBAM does not operate through individual practitioner certifications; the regulation is administered by the European Commission (DG TAXUD with DG CLIMA), Member State competent authorities handle authorised-declarant registration, and verification is conducted by separately accredited verification bodies (ISO 14065 + EU CBAM-specific accreditation). What Othello does: assembles embedded-emissions data on the Thai-producer side; supports authorised-declarant work on the EU-importer side; coordinates between the two; prepares verification-ready documentation. What Othello does not do: claim EU-conferred certification; provide the verification opinion itself (separately engaged verifier); operate as an authorised CBAM declarant. The credential category is “applied competence in CBAM compliance preparation, anchored by Nataree Aussapim” — with substantive cross-Domain integration through Panit’s TGO + ISO 14064 + ISCC PLUS credentials.

Q.03How does the 50-tonne threshold work in practice?

The 50-tonne threshold is calculated per EU importer per calendar year, on cumulative net mass of CBAM-covered goods imported. If an importer’s total annual net imports of CBAM goods stay below 50 tonnes, the importer is fully exempt from CBAM obligations — no reporting, no authorised declarant status required, no certificates. Important exceptions: hydrogen and electricity imports are NOT eligible for the 50-tonne exemption — all imports remain subject to CBAM regardless of mass. The European Commission estimates the threshold exempts approximately 90% of EU importers while still covering ~99% of embedded emissions of CBAM goods, because the largest importers (which account for nearly all volume) remain in scope. For Thai exporters, the threshold operates downstream — calculated at the EU importer level. A Thai producer selling small volumes to multiple EU importers may have some buyers below threshold and others above; the producer needs to know which is which.

Q.04Which Thai exporters are affected by CBAM?

Thai exporters in four substantively relevant sectors face direct CBAM exposure: (1) Iron and steel — Thai steel mills, downstream steel products, auto-parts supply chain to EU OEMs. (2) Aluminium — Thai aluminium downstream (rolled, extruded, fabricated). (3) Cement — major Thai cement and clinker exports to EU. (4) Fertilisers — Thai PTT-group ammonia, urea, NPK exports. Two sectors are technically in scope but currently nil-impact for Thailand: electricity (no Thai-EU electricity trade) and hydrogen (Thai green-hydrogen projects in development, currently pre-export). Two sectors expected to enter scope by 2027-2028 based on European Commission scope-expansion review: organic chemicals and polymers — Thai petrochemicals exposure could be substantial. Thai exporters in scope today should treat CBAM as an operating constraint; Thai exporters in chemicals/polymers should treat CBAM readiness as forward-looking work.

Q.05Actual values or default values — which is better for Thai exporters?

For most Thai producers in CBAM-covered sectors, actual values produce lower CBAM cost than default values. Default values are based on the average emission intensity of the ten highest-emitting exporters, adjusted for regional factors — deliberately conservative (i.e. high) to incentivise producers to use actual values via verification. Thai producers with modern process equipment, renewable electricity input, or hydropower-grid aluminium typically have substantially lower actual emissions than defaults assume. The verification investment to use actual values is commercially worthwhile in most cases — typical CBAM cost reduction from default-to-actual transition: 15-40%, depending on sector, process, and actual emissions profile. Exception: very small importers below the 50-tonne threshold are exempt regardless; producers serving only such buyers don’t need verified actual values. Othello’s first-stage scope work identifies which trade flows justify the verification investment.

Q.06Who can verify CBAM embedded emissions?

CBAM verification is conducted by verification bodies accredited to ISO/IEC 17029 (general principles for validation and verification) and ISO 14065 (GHG validation and verification), with additional EU-specific CBAM accreditation per the implementing acts. Major accredited verifiers in Southeast Asia: TUV (TUV SUD, TUV NORD, TUV Rheinland), SGS, DNV, Bureau Veritas, AmSpec, BSI. Othello is not a CBAM-accredited verifier — verification is engaged separately, typically by the EU importer (where Othello supports EU-importer side) or by the Thai producer (where Othello supports Thai-producer side). Othello’s role is preparing the embedded-emissions dataset to verification-ready standard — assembling primary data, documenting methodologies, structuring evidence, supporting the verifier’s review. The role separation preserves verifier independence per the underlying ISO accreditation standards.

Q.07Can Thai carbon prices reduce the CBAM cost?

Yes — CBAM permits adjustment for carbon price already paid in the country of origin, reducing the EU importer’s CBAM certificate purchase requirement by an equivalent amount. For Thailand, this currently operates via the TGO (Thailand Greenhouse Gas Management Organization) T-VER programme and will strengthen substantially when the proposed Thai ETS comes into operation (expected late 2020s). The carbon-price adjustment requires documented evidence of carbon price actually paid — verified emissions data, payment records, traceability to the specific imported goods. Panit’s TGO CFO + CFP Auditor credential is the substantive route — TGO-verified emissions data is the documentation the carbon-price adjustment calculation requires. For Thai exporters with significant CBAM exposure, optimising the Thai carbon-price-paid adjustment is one of the most commercially substantive CBAM-cost-reduction strategies alongside actual-values verification. See /certifications/tgo/.

Q.08When does CBAM expand to more sectors?

The European Commission is reviewing CBAM scope expansion to additional sectors; widely anticipated additions include organic chemicals, polymers, and downstream products in already-covered sectors. The Commission committed to review CBAM scope by end of transitional phase (31 December 2025), with formal expansion proposals expected during 2026-2027. Implementation typically follows scope-expansion adoption by 12-24 months, with corresponding new transitional phases for newly-covered sectors. For Thai exporters in chemicals, polymers, and downstream metal products, CBAM readiness should be treated as forward-looking work rather than current-only compliance — the regime is designed to expand. Othello’s bench scopes engagements with explicit consideration of likely scope expansion, particularly for Thai petrochemicals and chemicals exporters whose products are widely expected to enter CBAM scope by 2028-2029.

Q.09What’s the CBAM cost trajectory through 2034?

CBAM certificate purchase obligations phase in progressively through 2034, mirroring the phase-out of EU ETS free allocation to EU-domestic producers. In 2026, only a small percentage of CBAM certificate obligations apply (proportional to the phase-out of free allocation in that year); by 2034, full 100% CBAM certificate obligations apply. The trajectory: roughly 2.5% in 2026, increasing each year, reaching 100% by 2034. EU ETS allowance price is the cost driver — certificate price tracks ETS allowance average. For Thai exporters, the strategic implication is that CBAM cost in 2026 is small but growing rapidly; the verified embedded-emissions and carbon-price-adjustment work done in 2026 compounds in value through 2034 as the financial bite intensifies. The 30 September 2027 first surrender deadline is operationally manageable; the 2030+ surrender deadlines will be substantively material to Thai-EU competitive positioning.

Q.10How does CBAM fit Othello’s broader engagement framework?

CBAM is the second of Nataree Aussapim’s five EU & Cross-Border Disclosure anchors, alongside CSRD/ESRS, EU Taxonomy, TCFD, and SBTi. Uniquely, CBAM engagements integrate substantively with Panit Chancharoonpong’s seven-credential ESG-assurance cluster — particularly TGO CFO + CFP Auditor (Thai carbon-price adjustment), ISO 14064 Lead Auditor (embedded-emissions methodology), and ISCC PLUS (chain-of-custody data backbone). Together with the firm’s three reporting-framework anchors (GRI 2021, IFRS S1/S2, FTSE Russell), the configuration delivers the full sustainability-compliance stack a Thai cement, steel, aluminium, fertiliser, or hydrogen exporter needs: CBAM compliance preparation (Nataree), embedded-emissions verification (Panit), Thai carbon-price documentation (TGO), parallel CSRD compliance where the producer has EU subsidiaries (Nataree), and IFRS S2 climate disclosure where the producer is SET50-listed (Kittichai). Founded 2020 on US Government bilingual contracts under FAR-grade contractor verification, the firm’s procurement-grade audit-trail standard applies to CBAM engagements the same way. One engagement letter, one NDA from first email, one audit-trail Bangkok-side, twenty credentials behind it. Email [email protected] or call +66 02-859-2145.

CBAM is live. Twenty credentials behind the embedded-emissions data.

CBAM compliance preparation, anchored by Nataree Aussapim (EU Disclosure Lead), integrated with Panit Chancharoonpong’s TGO + ISO 14064 + ISCC PLUS credentials — one bench covering scope determination, authorised-declarant coordination, embedded-emissions data assembly, verification preparation, annual declaration support, and Thai carbon-price adjustment documentation under one engagement letter. The configuration Thai cement, steel, aluminium, fertiliser, and (forward-state) hydrogen exporters with EU buyer relationships need as the definitive phase operates and the EU ETS free-allocation phase-out tightens CBAM cost through 2034. ≤1 BH acknowledgement · scoping call within 1 BD · NDA from first email.

+66 02-859-2145 · [email protected]
Unit 12-03, Chartered Square · 152 N Sathon Rd · Si Lom · Bangkok 10500
CBAM · EU Carbon Border Adjustment Mechanism · Regulation (EU) 2023/956 · Amended by 2025/2083 · Definitive Phase From 1 January 2026 · 50-Tonne De Minimis Threshold · ~90% Importers Exempt · ~99% Emissions Covered · Six Sectors: Cement · Iron & Steel · Aluminium · Fertilisers · Electricity · Hydrogen · First Certificate Surrender 30 September 2027 · EU ETS Price Linkage · Free Allocation Phase-Out Through 2034 · Pairs with TGO · ISO 14064 · ISCC PLUS · CSRD · Nataree Aussapim · EU Disclosure Lead · Verifiable at ec.europa.eu & cbam.taxation-customs.ec.europa.eu Othello International
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