Get your CBAM estimate
Choose how you want to estimate your UK CBAM liability. Both options are free.
Most accurate
Upload your import data
Upload a CSV or Excel file from your customs broker or CDS export. We match each line item against CBAM commodity codes and calculate your liability per shipment.
Your file should include:
- Commodity codes (8 or 10 digit)
- Country of origin
- Net weight (kg)
- Invoice value (GBP)
Quick estimate
Answer five questions about your imports — value, sectors, and countries of origin. We use HMRC default emission factors to estimate your liability range.
Best if you:
- Don’t have your customs data to hand
- Want a ballpark before gathering files
- Need a number for a board discussion
Takes about 60 seconds. Less precise than a CSV upload, but gives you a useful starting point.
Start quick estimate