To understand this question we first need some bank capital 101 from MB’s banking insider, Deep T:
There are two ways an Australian Deposit taking Institution (“ADI”) calculates capital to be allocated against a residential mortgage. Either in accordance with APRA’s APS 112 Attachment C or under Advanced Basel II methodology. Let’s address the rather simple APRA methodology first and then look at the implications of the advanced method.
My critics may be saying that I oversimplify. If it’s the simple truth then they’re correct but you can’t understand the bigger position without knowledge of the basic fundamentals. That’s where it starts.My simple question is, how much capital does an ADI need to allocate to a mortgage over time? Let’s start with a $100 mortgage and the table below from APS 112 for standard mortgages.
