Ireland: the annual stamp duty on the card itself
Irish minimum payments follow the common European shape: the greater of about 3% of the balance or a small flat amount of around €6, with the month's interest taken from within that percentage rather than added to it. There is no statutory ceiling on the rate.
The Irish oddity is a charge that has nothing to do with the balance. The State levies stamp duty of €30 a year on every credit card account, collected in arrears by the issuer and passed on whether the card is used or not. It is charged per account rather than per card, so two cards on one account attract one €30 charge, and it is why closing a dormant Irish card is worth doing: an unused account still costs €30 a year. Switching accounts within a year does not double the duty, but only if you hand the letter of closure from the old issuer to the new one.
That €30 does not appear anywhere in the calculator above, which models interest and principal only. Add it to the total cost of any Irish plan that runs for more than a year, along with any annual fee the card charges on top.