Are there any credit cards that cannot be used for mortgage payments? CardUp Team May 31, 2021 03:13 Please note that credit cards issued by Citibank and American Express cannot be used for mortgage payments. Related articles Will my mortgage payments earn rewards on my card? How do mortgage payments work on CardUp? What types of cards are accepted by CardUp? How would the recipient know that I have paid my mortgage payment via CardUp? The recipient that I would like to pay to is not on the list. What should I do?