Best UK CBAM software for 2027

The United Kingdom (UK) Carbon Border Adjustment Mechanism (CBAM) starts on 1 January 2027 for goods imported on or after that date. HM Revenue and Customs (HMRC) says: "The person liable for CBAM is the importer of the CBAM goods." That importer can be based outside the UK. The first return and payment, for 2027, are due on 31 May 2028, so the work now is getting emissions data from the overseas producers. Every tool below says on its own site that it supports UK CBAM. Several also cover the European Union scheme, so each mark here is only what the vendor says about UK CBAM.

The list

1. kolum

• Who it is for: Importers and their compliance teams, with several companies under one account.
• Best for: UK importers with several companies that want supplier requests, actual or default figures and reports in one place.
• Strengths: Asks suppliers for emissions data and shows which suppliers have sent actual figures. Keeps actual and default values per article. Every figure traces back to its source and every submission is versioned.
• Limits: Its UK cost forecast is marked as coming soon. Does not name the UK goods list.

2. TSC CBAM Exporter

• Who it is for: Manufacturers and exporters outside the UK and the European Union that sell into the UK.
• Best for: Overseas producers that need audit-ready figures for their UK importers.
• Strengths: Says it generates HMRC-compliant declarations and accounts for the £50,000 threshold. Supplier portals let precursor suppliers upload verified carbon intensity data. Exports data lineage records for verifiers and HMRC audits.
• Limits: Its UK CBAM page is a buyer guide on its own site that names its own tool the best overall. Does not say how it holds HMRC default values or whether it handles several companies.

3. carbmee EIS

• Who it is for: Importers that need product-level UK CBAM figures built from their purchase and supplier records.
• Best for: UK importers that want supplier data, the £50,000 test and return records in one tool.
• Strengths: Says it builds emissions figures at product level from purchase and supplier data. Matches commodity codes against the CBAM goods list and tracks imports against the £50,000 threshold. Holds the proof a Carbon Price Relief claim needs.
• Limits: Its UK CBAM page does not say whether one account can hold several companies. Supplier figures replace default values; it does not say it holds the default values itself.

4. SustainGRC

• Who it is for: Importers that already track emissions in the same system.
• Best for: Importers that want CBAM figures to come from their existing emissions records and track both thresholds.
• Strengths: Tracks your running total against the £50,000 threshold automatically. Structured supplier workflows with templates, questionnaires and status tracking. Reads installation-level emissions from the same system without retyping.
• Limits: Its feature list follows the European Union method and does not show a UK return. Does not say whether it holds several companies.

5. CBAMable

• Who it is for: Customs brokers who prepare CBAM evidence and reports for importer clients.
• Best for: Customs brokers who want one workspace per importer client and a way to ask suppliers for evidence.
• Strengths: Suppliers upload their documents through a secure link without needing an account. Keeps each importer client in its own workspace. Lists UK CBAM readiness preparation from January 2027 in its plans.
• Limits: Does not file for you: it prepares evidence and export files for broker review. Built for customs brokers rather than for importers directly.

6. CarbonChain Connect

• Who it is for: Importers and traders that want to measure the emissions in what they import and compare suppliers.
• Best for: Importers that want to measure supplier emissions and find lower-carbon suppliers.
• Strengths: Says it measures the emissions in imported products and the carbon intensity of supplier sites. Says it helps find lower-carbon suppliers.
• Limits: Its UK CBAM page does not say how it handles the £50,000 test, records for a verifier or several companies.

7. Dubrink

• Who it is for: Importers, exporters, suppliers and verifiers, with advisers on hand.
• Best for: Groups with several companies that want advice and a verifier network alongside the software.
• Strengths: Handles several companies and consolidated reporting in one place. Offers a network of accredited verifiers and a success engineer for setup. Carries a UK CBAM Ready label.
• Limits: Its UK CBAM page explains the rules; the feature list sits on its home page and covers CBAM in general. Does not say how it handles the £50,000 test or default values.

8. Zevero

• Who it is for: UK importers that also keep a company carbon footprint.
• Best for: UK importers that want supplier outreach for CBAM to feed a wider carbon footprint, including emissions in its supply chain.
• Strengths: Supports supplier outreach and data collection for UK importers. Connects CBAM data to the Scope 3 inventory so the same figures are used twice.
• Limits: Its UK CBAM page does not show the registration test, return figures or records for verifiers.

What HMRC sets

• CBAM applies to specified goods imported into the UK on or after 1 January 2027, in aluminium, cement, fertiliser, hydrogen, and iron and steel. Scrap in aluminium and iron and steel is left out.
• You must register if you expect to import CBAM goods worth £50,000 or more within the next 30 days, or if you imported £50,000 or more in the previous 12 months (registration itself opens on 1 January 2028).
• Registration for CBAM opens on 1 January 2028. In the first year you have until 31 January 2028.
• The first accounting period runs from 1 January to 31 December 2027, and the return and payment are due on 31 May 2028.
• Use verified actual emissions from the producing site, or HMRC default values. The verifier must be accredited to the International Organization for Standardization (ISO) standards ISO/IEC 17029:2019 and ISO 14065:2020.

Side by side

Senseible also has a CBAM suite, but it is for the European Union scheme, which is a different scheme from UK CBAM. Senseible does not build a UK CBAM return for HMRC, so it is not scored here.

Quick answers

What is the best UK CBAM software for a UK importer with overseas suppliers in 2027?

The highest score on this guide’s checks is carbmee EIS, then kolum and SustainGRC. Why carbmee EIS: built for the UK importer side.

What is the best UK CBAM software for an overseas producer selling into the UK in 2027?

The highest score on this guide’s checks is TSC CBAM Exporter, then kolum and carbmee EIS. Why TSC CBAM Exporter: built for the overseas producer side.

Which UK CBAM software helps work out whether you must register in 2027?

The highest score on this guide’s checks is carbmee EIS, then TSC CBAM Exporter and SustainGRC. Why carbmee EIS: tracks imports against the £50,000 threshold.

Which UK CBAM software suits a group with several importing companies in 2027?

The highest score on this guide’s checks is kolum, then CBAMable and Dubrink. Why kolum: creates a report for each company.

Which UK CBAM software suits a customs broker acting for several clients in 2027?

The highest score on this guide’s checks is CBAMable, then kolum and Dubrink. Why CBAMable: built for customs brokers.

How to choose

1. Checks goods against the UK CBAM goods list by commodity code. Ask: "Which of our commodity codes does it check, and does it use the UK list?"
2. Collects emissions data from overseas producers and suppliers. Ask: "How does an overseas supplier who has never heard of CBAM send us their figures?"
3. Works with verified actual emissions and with HMRC default values. Ask: "Show us one good on actual data and one on default values."
4. Prepares the figures for the UK CBAM return. Ask: "Show us the figures that go on the first return, due 31 May 2028."
5. Tracks imports against the £50,000 registration threshold. Ask: "How will it tell us the day we reach £50,000 of CBAM goods?"
6. Ties each figure to its evidence, so a verifier or HMRC can follow it. Ask: "Click one figure and walk me back to the supplier’s verified report."
7. Handles several companies or clients in one account. Ask: "Can each importing company in our group keep its own return?"

Related page: UK CBAM for Indian exporters, explained.

Related guides: Best CBAM software for 2027, Best supplier emissions software for 2027, Best carbon compliance software for 2027.