TF, I'm going to ask a follow up question as I hear this stated a lot when talks come to interest rates.
Correct me if I'm wrong. Yes the bank is paying the depositor 5% for 3yrs on the cash (let's say $100k). But they don't just lend the cash straight back out 1:1 do they - for every $1 they have in deposits, don't they get to lend $5 (or similar ratio)?
My point is, if they are paying 5% on $100k deposited, but lending out $500k even at the same 5% - they're still going to make money.
As I said this is just my basic understanding, so please point out if I'm wrong, and obviously this is only talking about funds lent out on their deposits not from borrowing in OS markets etc which I know is also part of the equation.