How import taxes are calculated

1. Import duty = customs value × rate (ad valorem).
2. Excise (if any) = (value + import duty + trade remedy duty if any) × excise rate.
3. Environmental tax (if any) = quantity × specific amount.
4. VAT = (value + import duty + excise + environmental tax + trade remedy duty) × VAT rate.

The portal's calculator uses a configured formula per tax type rather than one formula for all goods, and does not automatically calculate complex cells (several rates, quotas, specific duties) – the user confirms the applicable rate.

Exchange rates are entered by the user; the system never uses assumed rates.