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CBAM first declaration: September 2027 preparation plan with reverse timeline

The first annual CBAM declaration is due by 30 September 2027, covering all CBAM imports from calendar year 2026 (Art. 6(1) of Reg. (EU) 2023/956). This is not something you can prepare in September — it requires systematic data collection throughout 2026, emissions calculations, supplier engagement, certificate purchases and verification. This page provides a reverse timeline from the deadline, a preparation plan and a checklist. CBAMCheck generates the data draft now so you start with structure, not a blank page.

Generate your CBAM dossier — €299Free check: does CBAM affect you?

€299 · One-time · 12 professional deliverables · Your data never leaves your browser

Built on Reg. (EU) 2023/956 · Modified by Reg. (EU) 2025/2083 · 13,566 default values (Reg. 2025/2621) · 100% browser-side — your data never leaves your device

The preparation timeline in numbers

30 Sep 2027
First annual CBAM declaration deadline (Art. 6) — covers calendar year 2026
12+ months
Data collection period: all 2026 imports must be captured, calculated and verified
Start now
The earlier you structure your data, the smoother the declaration process

Reverse preparation timeline from 30 September 2027

1
Now: generate your CBAMCheck dossier
Start with structure. CBAMCheck generates 12 documents including emissions calculation, certificate estimation and declaration draft based on your expected 2026 imports.
2
Q1 2026: begin systematic data collection
From 1 January 2026, record every CBAM import: CN codes, tonnes, country of origin. Use the CBAMCheck Annex V template.
3
Q1–Q2 2026: engage suppliers for actual emissions data
Send the CBAMCheck supplier letter. Actual data eliminates the default value mark-up and lowers your CBAM cost.
4
Q1 2027: purchase your first CBAM certificates
Art. 20: certificates on sale from 1 February 2027. Buy to cover the quarterly 50% balance (Art. 22(2)).
5
Q2 2027: engage an accredited verifier
Art. 8: the verifier needs time to review your emissions data. Don't start in September. CBAMCheck provides the Annex VI verification prep documentation.
6
30 September 2027: submit your declaration
Art. 6: submit through the CBAM Registry with verified emissions, certificate count, Art. 9 deductions and supporting documentation.

Three preparation mistakes importers make

MISTAKE 1 — THINKING SEPTEMBER 2027 IS FAR AWAY

Assuming there is plenty of time

The declaration covers all of 2026. Data collection starts 1 January 2026. Supplier engagement, verification and certificate purchases all require lead time. September 2027 is the deadline, not the start.

MISTAKE 2 — STARTING WITH A BLANK PAGE

Not structuring data collection from day one

Without a template, you spend months reorganising data. CBAMCheck generates the structure now — Annex V template, emissions methodology, declaration draft — so you fill in real data as it comes.

MISTAKE 3 — LEAVING VERIFICATION TO THE LAST MINUTE

Engaging the verifier in August 2027

Art. 8 verification requires data review, queries and corrections. Verifiers will be in high demand before the first declaration. Engage early.

What you receive: 12 deliverables in one ZIP file

CBAMCheck generates a complete CBAM compliance dossier — not a single PDF. 12 structured documents delivered as a ZIP file, each citing the specific article of Reg. (EU) 2023/956 it addresses.

1

Scope Assessment

Determines whether your imports fall under CBAM and which obligations apply. Art. 2 + Art. 2a of Reg. (EU) 2023/956.

2

Embedded Emissions Calculation

Calculates embedded emissions per tonne using default values from Implementing Reg. (EU) 2025/2621 or your actual data. Art. 7 + Annex IV.

3

CBAM Certificate Estimation

Estimates the number of certificates required and the projected cost, adjusted for free allocation (Art. 31).

4

Draft CBAM Declaration

Pre-structured declaration following Art. 6(2) requirements: quantities, emissions, certificates, carbon price.

5

Carbon Price Documentation

Documents any carbon price paid in the country of origin for Art. 9 deduction. Pre-formatted for the CBAM Registry.

6

Annex V Record Template

Record-keeping template compliant with Annex V requirements. Ready for verifier review.

7

Verification Preparation

Structured preparation for Art. 8 verification by an accredited verifier. Annex VI checklist included.

8

Supplier Letter Template

Model letter in English requesting emissions data and installation information from your third-country supplier.

9

Compliance Calendar (.ics)

Importable calendar with quarterly certificate obligations (Art. 22(2)), annual declaration deadline (30 September), and key milestones.

10

Executive Summary

One-page overview of your CBAM exposure: cost estimate, timeline, risk areas. Ready for management or board reporting.

11

Interactive HTML Dashboard

Standalone HTML dashboard with 2026–2032 projections reflecting free allocation phase-out (Art. 31). Works offline, no subscription.

12

Compliance Calendar Document

Visual calendar of all CBAM deadlines, reporting windows and certificate purchase schedules.

Generated from your input data, in your browser. No data leaves your device.

See what you get

Download a sample CBAMCheck dossier. This is a real output generated with generic data — the same 12 deliverables you will receive with your company's actual figures.

Download sample dossier (ZIP)

Generic data. Your dossier will contain your actual import figures, CN codes and emissions calculations.

Estimate your CBAM exposure

Select your sector and country of origin. CBAMCheck searches through 13,566 official records from Implementing Reg. (EU) 2025/2621 and shows the result with the 2026 mark-up included.

Quick CBAM Calculator

Average European Commission default values per sector and country of origin.

Default emissions (tCO₂e/t)
Mark-up 2026 (10%)
Total emissions with mark-up
CBAM rate 2026 (2.5%)
Estimated certificates

This is a quick estimate. Your complete dossier includes projections through 2032, an editable interactive dashboard, and 10 PDF documents.

Generate your complete dossier — €299 →

Average values per sector from Implementing Reg. (EU) 2025/2621. The complete dossier uses the exact CN code of your goods, not the sector average. Estimated EU ETS price: €75/tCO₂e.

What CBAM compliance costs with each alternative

FeatureFree toolCBAMCheckSaaS Enterprise
PriceFree€299 (one-time)€1,990–€4,800/year
ModelGeneric template12 professional deliverablesAnnual subscription
Default valuesNot included13,566 (Reg. 2025/2621)Partial
Interactive dashboardNoHTML, 7-year projectionPlatform-locked
Supplier letterNoEnglish template includedVariable
Art. 8 verification prepNoIncludedVariable
PrivacyVariable100% browser-sideData on server
Multi-company supportNoVia Professional PackYes

Choose your licence

1 DOSSIER
€299
/ dossier

  • 10 professional PDF documents
  • Interactive HTML dashboard (2026–2032 projection)
  • 13,566 official default values integrated
  • English supplier letter template
  • Importable .ics calendar
  • 10 regenerations · 30 days
  • 1 licence = 1 importing company
Get your individual licence →
PROFESSIONAL PACK
€1,999
70 generations · 1 key

  • 70 generations with a single key
  • 70 complete dossiers (12 deliverables each)
  • Switch product between generations
  • Ideal for customs brokers
  • For consultants billing CBAM compliance
70 interactive HTML Dashboards × product (projection 2026–2032). Real-time tables and charts with variable calculations. No technical training required. Fully intuitive.
🔒 Data stays on your computer. No information shared with third parties.
Request Professional Pack →

How your licence works

1
1 licence = 1 importing company. You pay €299 for the dossier you generate now. The licence is linked to your company name + EORI.
2
Up to 10 regenerations of the ZIP to correct data, adjust goods or update technical information.
3
30-day editing window from first activation. Within that period you can regenerate the dossier as many times as needed (up to 10).
4
The downloaded dossier is yours forever. It does not expire and is not tied to any subscription. The 10 PDFs, HTML dashboard and .ics calendar remain functional offline.

The EU CBAM portal ASKS for data. CBAMCheck CALCULATES it.

THE EU CBAM PORTAL

Asks you to declare data

The EU CBAM Registry (Art. 14) requires you to submit total embedded emissions, number of certificates and carbon price documentation. It does not calculate these for you. You must arrive with the numbers ready.

CBAMCHECK

Calculates the data you need to declare

CBAMCheck takes your import data (tonnes, CN codes, country of origin) and generates the embedded emissions calculation, certificate estimation, carbon price documentation and all supporting records. You download the dossier and use it to complete your declaration in the CBAM Registry.

Enforcement: what happens when CBAM certificates are missing

Art. 26 of Reg. (EU) 2023/956 sets the penalties.

⚠️
Authorised declarant: penalty identical to EU ETS rate
EU ETS rate per certificate

Art. 26(1): an authorised CBAM declarant who fails to surrender the required certificates by 30 September faces a penalty identical to the excess emissions penalty under Art. 16(3) of Directive 2003/87/EC, increased per Art. 16(4). The penalty applies per certificate not surrendered. Payment does not release the obligation to surrender outstanding certificates (Art. 26(3)).

⚠️
Unauthorised importer: penalty 3–5 times the standard rate
3–5×

Art. 26(2): anyone introducing goods without authorisation faces a penalty of 3 to 5 times the standard penalty, depending on duration, gravity, scope, intent and cooperation. Also applies to importers exceeding the de minimis threshold (50 tonnes, Art. 2a) without authorisation (Art. 26(2a)).

Preparing the first declaration for multiple importing companies?

The Professional Pack covers 70 dossier generations. Start preparation for 70 companies now — structured data from day one.

Request Professional Pack →
70 generations · 1 key · First-declaration prep for every client

What CBAMCheck guarantees and what it does not

CBAMCheck generates a document structured according to Art. 6 and Art. 7 + Annex IV of Regulation (EU) 2023/956 from the information you enter. The truthfulness, accuracy and completeness of that information is your responsibility as importer or authorised CBAM declarant.

We guarantee that the document structure follows Regulation (EU) 2023/956 and that the legal references cited are correct. We do not guarantee that a specific document will be accepted by a national competent authority in a specific case.

CBAMCheck is not legal advice. For specific situations, consult a lawyer or specialised regulatory consultancy.

Frequently asked questions

Is this a subscription?
No. One-time payment. The licence includes 30 days of editing and 10 regenerations. The downloaded dossier is yours forever.
Can I request a refund?
By activating the licence you give express consent for the immediate generation of digital content under Art. 16(m) of Directive (EU) 2011/83, waiving the 14-day withdrawal right. Refunds are accepted only for reproducible technical faults.
What if the regulation changes?
If the regulation changes during your licence validity, you can regenerate the document with the updated version of the generator at no extra cost.
When is the first CBAM declaration due?
The first annual CBAM declaration is due by 30 September 2027, covering all CBAM imports from calendar year 2026 (Art. 6(1) of Reg. (EU) 2023/956).
Can I prepare the declaration data now?
Yes. CBAMCheck generates a dossier based on your expected 2026 imports — emissions calculation, certificate estimation and declaration draft. You update the data as actual imports come in throughout 2026.
What if I don't submit by 30 September 2027?
Failure to submit the declaration or to surrender the required certificates triggers Art. 26 penalties: ETS-rate penalty per missing certificate (Art. 26(1)), and the certificate obligation persists (Art. 26(3)).
⚠️ Important notice: CBAMCheck is a self-assessment documentation tool, not legal advice and not a third-party audit. The document is generated from your input data. You are responsible for the accuracy of the data you provide. CBAMCheck does not replace a qualified professional assessment.

30 September 2027 is closer than you think. Start with structured data today.

12 deliverables. Declaration draft. Emissions calculation. Annex V template. Verification prep. Compliance calendar. €299.

€299 one-time
12 professional deliverables · Browser-side · No subscription · Reg. (EU) 2023/956
Generate your CBAM dossier — €299