| ▲ | jcranmer 2 days ago | |
> It can be difficult to figure out whether the theoretical limit is 10x or 100x in my mind because there isn't a reserve ratio federally (well, there is one, but it's zero) I know what you're thinking of here, but it doesn't mean anything like what you think it means. So the US used to have a rule that every bank hand to have a certain percentage of its assets stored in its account at a Federal Reserve bank; it is this percentage which was gradually reduced to 0 by I think 2020. Note that only the funds in that account meet the requirement; a literal pile of cash contributes not a single cent. The way banks are primarily limited nowadays is via capital adequacy ratio, which is essentially that you need to set aside a particular pile of capital that can be raided to guard against assets falling in value to 0. It's complicated because this pile of capital doesn't come from the money a customer deposits in their account (which needs to be held as an asset to offset the liability a depositor represents), but rather from income the bank makes in other ways. If a bank sells $1 million worth of shares, they get to issue ~$20 million more loans. If a bank gets $1 million worth of new deposits, they get to issue... $0 more loans. Well, maybe less: if a bank gets $1 million worth of new bitcoin deposits, that probably reduces its capital ratio because bitcoin is such a risky asset. | ||
| ▲ | mothballed 2 days ago | parent [-] | |
>If a bank gets $1 million worth of new deposits, they get to issue... $0 more loans. Then it doesn't make sense for a classical deposit-lending bank to pay interest on those new deposits. They can't generate revenue from the new deposits since they cannot touch them to perform lending , and they are now a liability because they must perform banking services to the depositor, regulatory compliance, and insure against the risk something accidently happens to the money. Under your scheme maybe they could go park it at the fed and get interest that way but even that is technically a loan; they are giving up the notional money in exchange for interest in hopes they can collect it at a later time. | ||