A great deal of CBAM confusion comes from one basic uncertainty: who actually files the report, and what goes into it? Exporters often worry they must submit something to the EU themselves. The reality is more nuanced, and understanding it clearly tells you exactly where your responsibility begins and ends. This guide breaks down who files, what the report contains, and the crucial role you play as an exporter.
Who is legally responsible for filing?
The legal duty to file the CBAM report sits with the EU importer – the company bringing your goods into Europe. In the definitive phase, that importer must hold “authorised CBAM declarant” status and submit an annual CBAM declaration to the EU authorities. As an Indian exporter, you do not file this declaration and you do not submit anything directly to the EU.
But here is the catch that makes CBAM very much your concern: the importer cannot complete that declaration without emissions data from you. Your figures are the raw material of their report. So while the filing is not your legal obligation, being the source of the data places you at the centre of the process.
What a CBAM declaration contains
A CBAM annual declaration broadly pulls together the following information:
- The type and quantity of covered goods imported during the year, identified by their CN codes.
- The embedded emissions of those goods, expressed in tonnes of carbon dioxide.
- Whether those emissions are based on actual measured data or on EU default values.
- Any carbon price already paid in the country of origin, which can reduce the amount owed.
- Verification details confirming the emissions data has been independently checked by an accredited verifier.
- The number of CBAM certificates to be surrendered to cover the emissions.
Your role: the emissions data package
In practice, the single most valuable thing you can provide your EU buyer is a clean, well-organised, verified emissions data package for your product. A strong package shows your emissions per tonne, explains clearly how you measured them, identifies your direct and indirect sources, and comes with verification from an approved body.
Think about it from the buyer’s side. A supplier who hands over a clear, verified package makes the importer’s job easy and their compliance safe. A supplier who provides nothing forces the importer to fall back on EU default values – which are usually higher and therefore more expensive. Being the easy, low-cost supplier is a genuine commercial advantage, and it starts with the quality of the data you provide.
Actual data vs. default values in the report
The declaration must state whether emissions are based on your actual data or on defaults. This choice has real financial weight. If your verified actual emissions are lower than the default – as they often are for efficient producers – using them reduces the certificates the importer must buy. If you provide nothing, the importer uses the higher default, and your product effectively costs them more. This is why the data package you supply is not a formality; it directly shapes the numbers in the report and the cost attached to your goods.
The timeline behind the report
Timing trips up many exporters. The first annual CBAM declaration, covering 2026 imports, is due by 30 September 2027. That sounds comfortably far off, but the emissions data behind it must be collected throughout 2026 and then verified – a process that itself takes time. Waiting until 2027 to start gathering numbers is a recipe for a scramble, rushed data, and stressed buyers. The smart exporters treat their buyer’s September deadline as a finish line they cross months early.
A practical checklist for exporters
- Collect fuel, electricity and production data continuously, not at year-end.
- Organise supporting documents – invoices, meter readings, logs – clearly and by date.
- Arrange independent verification well before your buyer’s deadline.
- Package the verified figures with a clear explanation of your method.
- Send the package to your buyer early, and confirm it contains everything they need.
What happens if you provide nothing
It is worth spelling out the consequence of inaction, because it is easy to underestimate. If you send your buyer no emissions data, they do not simply give up – they fall back on EU default values, which are set high by design. Your product’s reported footprint jumps to that pessimistic estimate, and the carbon cost attached to your goods rises accordingly. The buyer, now facing a higher cost on your product than on a competitor’s better-documented one, has every reason to renegotiate your price or shift the order elsewhere.
So “doing nothing” is not a neutral choice. It actively pushes your product toward the most expensive possible treatment under CBAM. Providing data is not just about being helpful; it is about defending the price and competitiveness of your own goods.
There is a relationship dimension too. Buyers talk to each other, and reputations travel. An exporter known for delivering clean, verified data on time becomes the kind of supplier importers actively recommend and return to, because working with you lowers their compliance risk. Over several years, that reputation can matter as much as price – it is the difference between being a supplier buyers tolerate and one they seek out.
Frequently asked questions
Do Indian exporters file the CBAM report themselves?
No. The EU importer files the annual CBAM declaration. However, exporters must supply the emissions data the importer needs to complete it.
What information does a CBAM declaration include?
It includes the quantity of covered goods, their embedded emissions, whether actual or default data was used, any carbon price paid at origin, verification details, and the certificates to be surrendered.
When is the first CBAM declaration due?
The first annual declaration, covering 2026 imports, is due by 30 September 2027, with subsequent declarations due each 30 September.
The bottom line
The EU importer files the CBAM report, but you supply the fuel that makes it work. Being the exporter who delivers a clean, verified, on-time emissions data package is the simplest way to keep the cost on your goods low and to remain a preferred, low-risk supplier in the European market.
