I have noticed that when you get cashback at stores like Tesco for example, it doesn’t actually get displayed within the app and is just included as the final amount. I thought it might be a good idea to get it displayed, perhaps where the arrow is pointed in the screenshot attached?
I guess this depends if Tesco inform monzo that part of the transaction is cash back. I believe there is an area for this in the mastercard spec but whether it’s used who knows.
Retailers don’t pay interchange fees on the cashback portion, so that information is almost certainly passed back to the bank. In fact, if you like saving Monzo money, cashback is way cheaper for them than ATM withdrawals, because they don’t pay any fees either.