Request for Guest portal to show charges paid/due and other financials

Pretty much all of my guests who booked direct ask at one time or another when their second payment is due for their stay (we take 50% up front and the balance 45 days out). They also ask other financial questions like about their credit card hold for the security deposit or which credit card did they use, etc.

It seems reasonable that a guest portal would show what has been paid and when, with what card, etc and then what is due and when. This seems to be pretty standard for most any booking site for both hotels, activities, etc. 

I’d really like to see this added so that they can reference it at any time and not have to ask me.