Savings calculator

How much could you save?

HMRC's default values will be global averages. If your suppliers are cleaner than the global average, the default overcharges you, and verified supplier data is the only way to prove it. If they're dirtier, the default flatters them. Use the calculator below to see the arithmetic for your imports.

Annual value of CBAM-scope imports

Your imports of aluminium, cement, fertiliser, hydrogen, or iron and steel from outside the UK.

Primary sector of your imports

Primary country of origin

How do your suppliers' emissions compare with the global average?

HMRC's default values will be global averages. Verified supplier data only lowers your levy if your suppliers beat that average — this is your assumption, not ours.