I don't use mobile payment systems so I can't speak to this, but it seems that with suhide (for SuperSU) and a Magisk root hide function most/many of these kinds of apps can still work.Not exactly but installing TWRP will trip Knox so Samsung Pay & other things related won't work.
Might want to double check on this, but I am fairly sure I've seen at least Android Pay working, if that's your thing.