Fertiliser manufacturers supplying the European market may depend on emissions information from ammonia producers and other intermediate suppliers to establish the embedded emissions of their products under the Carbon Border Adjustment Mechanism (CBAM). The information chain can extend across several production stages before reaching the EU importer responsible for reporting.
The European Commission’s fertiliser guidance identifies ammonia as a precursor for nitric acid and urea. Depending on the manufacturing process, mixed fertilisers can incorporate ammonia, nitric acid, urea and other relevant fertiliser inputs.
Precursor Data and Fertiliser Production
The treatment of the CBAM ammonia precursor is relevant to calculating the emissions associated with downstream fertiliser products. Different production processes and input combinations can create distinct information requirements for manufacturers and blenders.
For products containing urea, urea CBAM data must support the applicable emissions calculation and remain linked to the relevant production information. The same principle applies when several inputs are combined to manufacture a mixed fertiliser.
Traceability Across the Fertiliser Supply Chain
The calculation of fertiliser embedded emissions requires information that connects the relevant production inputs with the finished product. Distributors purchasing completed fertilisers may rely on documentation that passes through multiple companies before reaching the EU declarant.
Product composition and production identity must remain consistent throughout this exchange. Purchasing teams therefore need to establish whether suppliers can provide information relevant to the formulation actually delivered, rather than relying solely on a general company-level emissions figure.
For mixed fertiliser compliance, the supporting records must reflect the relevant inputs and production process. A change in formulation or the origin of an intermediate material may affect which information is needed to substantiate the finished product’s emissions assessment.
Supplier Evidence and Market Access
Reliable ammonia supplier evidence can help connect upstream production records with the information required by downstream fertiliser manufacturers and European customers. Maintaining usable documentation across commercial transactions is relevant not only to ammonia producers but also to blenders, distributors and other intermediaries.
The ability to provide traceable, product-specific information can support customers’ assessment of emissions-related import costs. For fertiliser supply chains, the documentation available from upstream producers can therefore influence how effectively downstream companies substantiate the emissions figures associated with their products.

