KeldrionKeldrion · Regulatory technology
Kaimeter
The CBAM declaration you owe is annual, itemised, and due whether or not the data reached you. Kaimeter keeps one record for every consignment as it arrives, does the emissions and certificate arithmetic on the way, and leaves the declaration-ready file waiting when the window opens.
In development · free core tool, paid setup and consulting · Apache-2.0
Why the filing is hard
Since January 1st, 2026, the EU charges for the carbon embedded in imported cement, iron & steel, aluminium, fertilisers, electricity, and hydrogen. The importer of record - the declarant - files an annual CBAM declaration and surrenders certificates.
The calendar-year 2026 declaration is due September 30th, 2027, and certificates first go on sale February 1st, 2027. The data the declaration requires lives upstream, at the mill. That gap - between the declarant who files and the mill that holds the data - is the problem Kaimeter exists to close.
From consignment to declaration
- 01
One record per consignment
Goods arrive, you record them - CN code, net mass, supplier, installation - in the month it happens. The declaration is then assembled from records instead of reconstructed from invoices and inboxes a year later.
- 02
The 50-tonne line, watched
The de minimis exemption is measured on your total net mass of CBAM goods across the calendar year, not per product. Kaimeter keeps the running total, so you learn whether you are in scope while there is still time to act on it.
- 03
Embedded emissions, actual or default
Compute on the actual data your supplier provides, or on default values with the mark-up applied - 10% for 2026, 20% for 2027, 30% from 2028 (fertilisers: 1%). See both, and what each basis does to the number you will declare.
- 04
Certificate cost, before you owe it
Project the certificates your imports will require against the ETS allowance price. Certificates first go on sale on February 1st, 2027; the liability is better met as an estimate than as a bill.
- 05
The verifier's dossier, then the export
Gather what your verifier will ask for as the year runs, and export the declaration-ready file when the declaration period opens. The calendar-year 2026 declaration is due September 30th, 2027.
Where the numbers come from
Actual embedded emissions have to come from the installation that made the goods - and, for a complex good, from its own suppliers. Kaimeter lets a producer give its EU customers a verified figure with the rule version that produced it attached, so the declarant is not left rebuilding it from invoices and inboxes.
Where a supplier will not do that, you fall back to default values and the mark-up. Kaimeter shows you what the fallback costs against the actual figure, so the choice between them is a number and not a guess.
Open core
The core is open source so anyone can audit the math - the default-value tables, the discount rules, and the certificate-cost formula - before trusting a filing to it.
Kaimeter is built and maintained by Keldrion and licensed under Apache-2.0. The core tool is free. Paid setup and consulting are available for teams that want the deployment done for them.
Note
Kaimeter supports the work of a CBAM chain - import teams, trading companies, and mills - but it is not legal advice. Dates and obligations described here are those of the regulation itself; consult the primary sources or your advisor for your specific case.