ANSWER:

The sin is not upon you.

If there is no other Islamic alternative or debit card, a credit card seems permissible if it is a necessity. As long as they don’t allow interest to accumulate and they pay off in advance or immediately, this is permissible.

My parents use credit cards and nowadays everything can be done online, so they asked me to download the app and install everything for them and also to, sometimes buy sth. with it because they don’t know how to do it, am I sinful (they think it is necessary to have one in Germany)

Halal/Haram Matters, Riba |