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openaccountants/skills/cbam-carbon-border-adjustment.md

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v1EU-27
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1---
2name: cbam-carbon-border-adjustment
3description: >
4 Use this skill whenever an EU importer (declarant), an indirect customs representative, or a non-EU producer asks about the EU Carbon Border Adjustment Mechanism. Trigger on phrases like "CBAM", "carbon border adjustment", "CBAM certificates", "embedded emissions", "default values", "verified emissions", "CN code 7208", "CN code 28080000", "fertiliser CBAM", "cement CBAM", "aluminium CBAM", "hydrogen CBAM", "electricity CBAM", "iron and steel CBAM", "quarterly CBAM report", "CBAM declarant", "CBAM authorised declarant", or any request to assess CBAM scope, compute embedded emissions, prepare the quarterly report (transitional period) or annual CBAM declaration (definitive period from 2026). Covers Regulation (EU) 2023/956, Implementing Regulation (EU) 2023/1773 (transitional period reporting), the Default Values Implementing Regulation and the Commission's 2025 sectoral guidance. Does NOT cover: emissions trading system (EU ETS), domestic carbon taxes (UK CBAM, Australia Safeguard Mechanism, California CCA), customs tariff / preference rules, or product origin determination. ALWAYS read this skill before computing CBAM exposure or preparing a CBAM report.
5version: 0.1
6jurisdiction: EU-27
7tax_year: 2025
8category: cross-border
9depends_on:
10 - cross-border-workflow-base
11verified_by: pending
12---
13 
14# EU Carbon Border Adjustment Mechanism (CBAM) v0.1
15 
16## What this file is
17 
18**This file is a content skill that loads on top of `cross-border-workflow-base`.** It implements:
19 
20- **Regulation (EU) 2023/956** of 10 May 2023 establishing the CBAM.
21- **Implementing Regulation (EU) 2023/1773** of 17 August 2023 on reporting obligations during the transitional period (1 October 2023 – 31 December 2025).
22- **Definitive period rules** entering into force 1 January 2026 (financial liability via CBAM certificates plus annual CBAM declaration).
23- **Default values** and verified-emissions methodologies as published by the Commission.
24 
25**Tax year coverage.** Current for **calendar 2025** (transitional reporting) and the **early definitive period 2026**, reflecting the **Omnibus simplification proposal of February 2025** which introduced a small-importer de minimis (50 tonnes/year per declarant) and clarified default-value usage.
26 
27**The reviewer is the customer of this output.** CBAM emissions data flows from production-site engineering records, customs classifications, and external verification. Every output must be reviewed by a credentialed practitioner (customs broker, EU import lawyer, or accredited verifier under Implementing Regulation (EU) 2018/2067) before submission.
28 
29---
30 
31## Section 1 — Scope statement
32 
33This skill covers:
34 
35- **Six initial CBAM sectors** plus the scope expansions added in 2023:
36 - **Cement** — CN codes 2507 00 80, 2523 (clinker, cement, white cement, aluminous cement)
37 - **Iron and steel** — CN chapter 72 (most subheadings) plus selected articles of 7301, 7302, 7303, 7304, 7305, 7306, 7307, 7308, 7311, 7318, 7326
38 - **Fertilisers** — CN chapter 31 (nitrogen fertilisers, mixed fertilisers) plus 2808 00 00 (nitric acid)
39 - **Aluminium** — CN chapter 76 (unwrought, semi-fabricated, articles) and selected wrought products
40 - **Electricity** — CN code 2716 00 00 (only cross-border supplies)
41 - **Hydrogen** — CN code 2804 10 00
42- **Embedded emissions** computation: direct, indirect (where applicable), default values, verified actual values.
43- **Quarterly transitional reports** (Q3 2023 → Q4 2025) and **annual CBAM declaration** (from 2026, due 31 May for prior calendar year).
44- **CBAM certificates** — purchase, sale-back, surrender (definitive period).
45- **Adjustment for carbon price paid in country of origin**.
46- **Authorised CBAM declarant** application and obligations.
47 
48This skill does NOT cover:
49 
50- **EU ETS** stationary installations, aviation, maritime — see `eu-ets-allowances.md` (forthcoming).
51- **Other carbon-pricing regimes** (UK CBAM from 2027, Canada OBPS, Australia Safeguard Mechanism, California CCA, Korea K-ETS).
52- **Customs tariff and origin rules** beyond the minimum required to classify CBAM goods.
53- **Preference treatment** under FTAs.
54- **Indirect emissions** for sectors where they are out of scope (currently iron and steel and aluminium — confirm the latest delegated act).
55 
56---
57 
58## Section 2 — Timeline
59 
60| Date | Event |
61|---|---|
62| 1 October 2023 | Transitional period begins; first quarterly report due |
63| 31 January 2024 | First quarterly report (Q4 2023) due |
64| 31 January 2025 | Quarterly report (Q4 2024) due |
65| 1 January 2026 | Definitive period begins; financial liability via certificates |
66| 31 January 2026 | Final quarterly transitional report (Q4 2025) due |
67| 31 May 2027 | First annual CBAM declaration (for 2026) due, with certificate surrender |
68| Phased ETS free allocation phaseout | 2026: 97.5% free → reduces to 0% by 2034 (annual schedule in Article 36) |
69 
70---
71 
72## Section 3 — Filing requirements
73 
74### Transitional period (to 31 December 2025)
75 
76**[T1] Reporting declarant** (importer or indirect customs representative) submits a **quarterly CBAM report** within **one month** of quarter end via the CBAM Transitional Registry.
77 
78Contents per Implementing Regulation (EU) 2023/1773:
79- Total quantity of CBAM goods imported (by CN code and country of origin)
80- Total embedded emissions (direct and where applicable indirect) in tonnes CO₂e per tonne of goods
81- Methodology used (verified actual data; default values from the Commission; equivalent national methodologies during a grace period)
82- Carbon price paid in the country of production with supporting documentation
83 
84**Transitional period flexibility:**
85- Q3 2023 → Q3 2024: any methodology, including default values, allowed.
86- From Q4 2024 onwards: must use actual values where available; default values only allowed within Commission-set limits.
87 
88### Definitive period (from 1 January 2026)
89 
90**[T1] Only an Authorised CBAM Declarant** can import CBAM goods.
91 
92Application via the national Competent Authority of the importer's Member State. Approval requires:
93- No serious or repeated infringements of customs, tax, or market abuse rules
94- Financial standing
95- Established in the Member State
96 
97**Annual CBAM declaration** due 31 May for the prior calendar year, containing:
98- Total quantity imported per CN code per country of origin
99- Total embedded emissions (verified by accredited verifier, except where default values used)
100- Total CBAM certificates to be surrendered
101- Carbon price paid in country of origin
102 
103**Certificate purchase**: declarant buys CBAM certificates at the weekly average price of EU ETS auctions, on the Common Central Platform managed by a designated entity (likely the European Energy Exchange).
104 
105**Certificate surrender**: equal to embedded emissions × applicable factor (reflecting any ETS free allocation phasing — Article 31 / Annex II).
106 
107---
108 
109## Section 4 — Computing embedded emissions
110 
111### Step 1 — Classify the import
112 
113**[T1] Match the goods to a CN (Combined Nomenclature) code.** CBAM scope is determined by Annex I of Regulation (EU) 2023/956 — a list of specific 4-/6-/8-digit CN codes. If the CN code is not in Annex I, the import is out of scope (this period).
114 
115### Step 2 — Determine the country of origin
116 
117**[T1]** Use customs rules of origin. CBAM applies to imports from third countries EXCEPT:
118- EEA states (Iceland, Liechtenstein, Norway)
119- Switzerland
120- Certain territories with full EU ETS coverage (Northern Ireland for electricity, Büsingen, etc. — Annex III)
121 
122### Step 3 — Identify the production installation
123 
124**[T1]** Embedded emissions are computed at the installation level. Importer must obtain from the third-country operator:
125- Installation identification (name, address, UNLOCODE if available, operator name)
126- Direct emissions: Specific Direct Embedded Emissions (SDEE) per tonne of product
127- Indirect emissions (electricity used in production) — applicable currently for cement, fertilisers, electricity, hydrogen; **not** applicable for iron and steel or aluminium during the transitional period and currently in the definitive period (confirm latest delegated act)
128- Production route (e.g., for steel: integrated route via BOF vs electric arc furnace)
129- Carbon price paid (per Article 9)
130 
131### Step 4 — Methodology selection
132 
133**[T1] Hierarchy (Annex IV):**
134 
1351. **Actual emissions data** from the installation, calculated per the EU methodology equivalent to ETS Monitoring and Reporting Regulation (EU) 2018/2066, verified by an accredited verifier.
1362. **Default values** — Commission-published per sector and country/region. Use only:
137 - During transitional period freely until end of Q3 2024
138 - From Q4 2024: only for ≤ 20% of imported product weight per declarant per quarter
139 - In definitive period: only where actual values cannot reasonably be obtained
1403. **Other methodologies** — equivalent national methodologies of the producing country may be accepted during transitional period; not generally in definitive period.
141 
142### Step 5 — Compute embedded emissions
143 
144**[T1]** For each shipment:
145 
146```
147Embedded Emissions (tCO₂e) = Quantity (t) × Specific Embedded Emissions (tCO₂e / t)
148```
149 
150Sum across all shipments for the reporting period.
151 
152### Step 6 — Adjustment for carbon price paid
153 
154**[T1]** Article 9 allows a deduction for carbon price paid in country of origin on the embedded emissions of the imported goods, provided:
155- The price was effectively paid (e.g., national ETS, carbon tax)
156- Documentation provided (proof of payment, accreditation of the carbon-pricing regime)
157- Not offset by subsidies or other rebates
158 
159Adjustment in EUR converted at exchange rate of payment date.
160 
161### Step 7 — Compute certificate surrender (definitive period from 2026)
162 
163```
164Certificates to surrender = Embedded Emissions − Free Allocation Factor − Carbon Price Adjustment
165```
166 
167**Free Allocation Factor (Annex II):** in 2026 = 97.5% of the free allocation share for the equivalent ETS product (i.e., importer surrenders only 2.5% × benchmark emissions); reduces annually to 0% in 2034.
168 
169Each certificate represents 1 tCO₂e and is purchased at the weekly average EU ETS auction price.
170 
171---
172 
173## Section 5 — Edge cases and special rules
174 
175### 5.1 Indirect emissions
176 
177Currently in scope for: cement, fertilisers, electricity, hydrogen.
178Out of scope (transitional + early definitive period) for: iron and steel, aluminium.
179The Commission's 2025 review will reassess scope inclusion.
180 
181### 5.2 De minimis exemption (Article 2(3) and Omnibus 2025)
182 
183**[T1]** Originally: shipments ≤ EUR 150 in value exempt.
184**Omnibus 2025 (proposed):** 50-tonne annual de minimis per importer. Confirm the as-enacted text before relying.
185 
186### 5.3 Re-imports of EU-originating goods
187 
188Goods of EU origin that are re-imported are out of scope.
189 
190### 5.4 Inward processing and special procedures
191 
192Goods placed under inward processing, customs warehousing, transit, or other suspensive procedures are generally not yet released for free circulation and do not trigger CBAM. CBAM triggers on release for free circulation.
193 
194### 5.5 Precursor materials
195 
196For complex goods (e.g., steel articles, aluminium articles), embedded emissions of CBAM-relevant precursor materials must be included. The Commission's sectoral guidance maps each CN code to its in-scope precursors.
197 
198### 5.6 Common Central Platform certificate handling
199 
200Authorised CBAM Declarants maintain a certificate account. Up to 1/3 of certificates held at the end of each quarter may be sold back at original price (mitigates price volatility). Certificates not surrendered by 31 May of the year following the import year are cancelled.
201 
202### 5.7 Penalty exposure
203 
204| Trigger | Penalty |
205|---|---|
206| Failure to file quarterly report (transitional period) | EUR 10 – EUR 50 per tonne of unreported emissions (Implementing Regulation (EU) 2023/1773 Article 16) |
207| Failure to surrender certificates (definitive period) | 3 × the average price of certificates over preceding year × shortfall in tonnes (Article 26) |
208| Unauthorised import in definitive period | Goods may be denied release; declarant penalties per Member State implementation |
209 
210### 5.8 Verification requirements (definitive period)
211 
212**[T1]** Actual emissions data must be verified by an accredited verifier under Implementing Regulation (EU) 2018/2067. Default values do not require verification. The verifier must be accredited in an EU Member State; non-EU verifiers may operate through mutual recognition where established.
213 
214### 5.9 Interaction with UK CBAM (from 2027)
215 
216The UK announced a domestic CBAM effective 1 January 2027 covering aluminium, cement, ceramics, fertilisers, glass, hydrogen, iron and steel (not electricity). Scope and methodology align broadly with EU CBAM. Goods that pass through the UK before importation to the EU may face double pricing in some scenarios — review preference treatment and customs sequencing.
217 
218---
219 
220## Section 6 — Output specification
221 
222The reviewer brief must include:
223 
2241. **Goods inventory** — every CBAM-relevant import: CN code, quantity, country of origin, installation, declarant of record.
2252. **CBAM in-scope determination** — confirmation that CN code is in Annex I and country of origin is not exempt.
2263. **Authorised CBAM Declarant status** — application date, approval date, or pending.
2274. **Embedded emissions table** — direct and (where applicable) indirect, per shipment, with methodology source.
2285. **Default-value usage tracking** — percentage of weight using default values per quarter to confirm ≤ 20% cap (Q4 2024 onwards).
2296. **Carbon price adjustment computation** — per shipment with supporting documentation.
2307. **Certificate surrender schedule** (definitive period) — total certificates due, free allocation factor applied, current certificate inventory.
2318. **Quarterly transitional reports** — XML payload per quarter through Q4 2025.
2329. **Annual CBAM declaration** draft (definitive period) — verified emissions, certificates to surrender, supporting documentation.
23310. **Reviewer questions** — open items flagged as [T2] or [T3].
234 
235---
236 
237## Section 7 — Self-checks
238 
239Before delivering output, verify:
240 
241- [ ] CN code matched to Annex I CBAM scope list (8-digit precision where required).
242- [ ] Country of origin not on Annex III exemption list.
243- [ ] Authorised CBAM Declarant status confirmed for definitive-period imports.
244- [ ] Installation identification documented with operator-provided data.
245- [ ] Embedded emissions methodology hierarchy applied (verified actual → defaults within cap).
246- [ ] Default-value usage tracked at ≤ 20% of weight per declarant per quarter from Q4 2024.
247- [ ] Indirect emissions included only for sectors in scope.
248- [ ] Carbon price adjustment supported by proof of payment, not subsidy-offset.
249- [ ] Free allocation factor matches Annex II for the reporting year.
250- [ ] Verification by accredited verifier for actual emissions in definitive period.
251- [ ] Certificate inventory reconciled to surrender obligation.
252- [ ] Quarterly reports filed within one month of quarter end.
253- [ ] Output flags every [T2]/[T3] item for reviewer judgement.
254 
255---
256 
257## Section 8 — Prohibitions
258 
259- **Do not** apply CBAM to CN codes not in Annex I, even if commercially related (CBAM is enumerated, not analogous).
260- **Do not** use default values beyond the transitional Q4 2024 limit without documenting the exception under Implementing Regulation (EU) 2023/1773 Article 4.
261- **Do not** deduct carbon price paid without proof of effective payment and a copy of the underlying regime certification.
262- **Do not** treat indirect emissions as in scope for iron, steel, or aluminium during the transitional period and current definitive period (verify the latest delegated act).
263- **Do not** advise on structuring imports to circumvent CBAM (e.g., processing in a third country to change CN code) without explicit escalation — anti-circumvention rules apply under Article 27.
264 
265---
266 
267## Section 9 — Disclaimer
268 
269This skill and its outputs are provided for informational and computational purposes only and do not constitute tax, legal, or financial advice. CBAM scope, methodology, and pricing are evolving rapidly with Commission delegated acts and the 2025 Omnibus simplification. Every output must be reviewed and signed off by a credentialed customs / CBAM specialist before submission of a quarterly report or annual declaration.
270 
271The most up-to-date, verified version of this skill is maintained at [openaccountants.com](https://openaccountants.com).
272 

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Use this skill whenever an EU importer (declarant), an indirect customs representative, or a non-EU producer asks about the EU Carbon Border Adjustment Mechanism. Trigger on phrases like "CBAM", "carbon border adjustment", "CBAM certificates", "embedded emissions", "default values", "verified emissions", "CN code 7208", "CN code 28080000", "fertiliser CBAM", "cement CBAM", "aluminium CBAM", "hydrogen CBAM", "electricity CBAM", "iron and steel CBAM", "quarterly CBAM report", "CBAM declarant", "CBAM authorised declarant", or any request to assess CBAM scope, compute embedded emissions, prepare the quarterly report (transitional period) or annual CBAM declaration (definitive period from 2026). Covers Regulation (EU) 2023/956, Implementing Regulation (EU) 2023/1773 (transitional period reporting), the Default Values Implementing Regulation and the Commission's 2025 sectoral guidance. Does NOT cover: emissions trading system (EU ETS), domestic carbon taxes (UK CBAM, Australia Safeguard Mechanism, California CCA), customs tariff / preference rules, or product origin determination. ALWAYS read this skill before computing CBAM exposure or preparing a CBAM report.

EU-27ty-2025

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