Just ignore it if you pay statement balance in full.

You may not get so much of answers about financial charges because most of the users here pay in full. Interest is our least worried thing and most of us don't pay attention to it.

what u know of finance charge, is termed differently for Islamic card, eg FMF

calculation almost same as conventional finance charge.

for us, we won't bother to calculate cuz we avoid it and it's complicated to calculate.

do contact bank if you must know how it works.