The Incoterm decides who pays which line. This works out your number: goods, carriage, duty and import VAT, with the cost lines set by the rule you are buying on. Figures are yours to enter, so it stays a transparent estimate, not a guess at your duty rate.
Pick the rule you are buying on and enter the seller's quoted price for that rule.
Only the lines this rule leaves to the buyer are shown. The rest are already inside the seller's price.
Enter the rates for your goods. If unsure, confirm the HS classification and rates with your customs broker.
Bridge C2C Solutions can classify your goods, confirm the duty and import VAT, check whether a trade agreement lowers your rate, and structure the Incoterm so the costs and risk sit where you want them.