Can Apple Card be used for mortgage payments?

Mastercard is the only network that allows charges to be made using a Mastercard Credit Card. Discover, VISA and American Express do not permit it.

There are third party companies that act as an intermediary to facilitate the payment. The issue is the intermediary will charge a fee that exceeds the cash back value of credit card. You can find these companies by doing a web search and asking just what you asked here.

It's unlikely a credit card company would offer such a service and it's also unlikely a mortgage lender would accept credit card payments.

Bottom line is that you should contact your mortgage lender and ask them if they take credit card mortgage payments. I’m almost 110% sure the answer is no.