What a cross-border order really costs once shipping, duty and tax are added.
Formula
landed cost = (item price + shipping) + duty + tax, where duty = item price x duty rate, and tax = (item price + shipping + duty) x tax rate
Assumptions
Duty is applied to the item price only; tax is applied to item price plus shipping plus duty. Some countries tax shipping differently, and a few apply duty to the shipping too.
Rates are the ones you enter. This calculator does not know your country's current duty schedule or de minimis threshold.
Currency conversion, card fees and any prepayment discount are not included.
Limits
This is arithmetic on your own figures, not a customs ruling. The carrier or customs authority decides the final amount.