So we would artificially drive up the interest rate, and create a huge disincentive to borrow, which would harm producers of expensive goods that we typically borrow money for, such as cars and houses. This would also deincentivize business expansion, at least expansion that is done on credit.
I'm not sure how this would keep banks from "creating" money though. If banks were able to lend deposits (regardless if they are savings accounts or not), the effect of creating new money (if that's what happens at all), would still exist. That's what we do know, just on a different scale.
Sounds to me that everything would be about the same, except that there wouldn't be as much demand for credit due to much higher interest rates, and bank fees would be much higher.
Nobody is artificially driving up the interest rate. If there is a low supply of savings (loanable funds) the price of loanable funds will increase (aka interest rates will increase). If there is a high supply of loanable funds, interest rates will decrease. There is nothing artificial about basic market forces.
In what I discussed, banks are
not lending deposits. When a person agrees to put money in a bank that cannot be withdrawn for a set period of time (as I described) that is not a deposit--that is essentially a loan to the bank. The bank then takes those funds loaned to it and loans them out to others. In this way the bank acts as an intermediary and central source of loanable funds. Where is the new money created in this process?
What clarified the whole process for me was an understanding of the types of contracts involved. Below is a detailed (if not longwinded) explanation of the difference between mutuum contracts (monetary loan contracts) and irregular deposit contracts (monetary deposit contracts).
A Mutuum contract refers to the contract by which one person—the lender—entrusts to another—the borrower or mutuary—a certain quantity of fungible goods (i.e. money), and the borrower is obliged, at the end of a specified term, to return an equal quantity of goods of the same type and quality (
tantundem in Latin). During the term of the contract, the borrower receives temporary ownership of the money lent to him, and the lender has no access to that money. At the end of the term, the borrower is obliges to return the
tantundum plus interest.
A deposit contract is a contract made in good faith by which one person—the depositor—entrusts to another—the depositary—a movable good for that person to guard, protect, and return at any moment the depositor should ask for it. The ownership and availability of the good, contrary to the mutuum contract, is not transferred. The depositor still owns the good, while the depositary serves to safeguard it. As an example, say I deposit a rare painting. I still own the painting, and the depositary is merely safeguarding it for me.
An "irregular" deposit contract is similar to the above but pertains to fungible goodrs, like money. In a regular deposit contract, I expect to receive the
exact good that I deposited. In an irregular deposit contract, the fungible goods are stored together, and I only expect to receive the same quantity and quality that I deposited (the
tantundem), not necessarily the exact same units.
Fractional reserve banking conflates a mutuum contract with an irregular deposit contract. A person deposits cash in a demand deposit account and are told they can access it at any time. This suggests an irregular deposit contract. But banks do not hold all of their cash on reserve. They treat the funds as if they are part of a mutuum contract, and use them as they wish. It is this conflation that facilitates the creation of money. There is only $100 cash in the bank, but the bank can issue $1000 worth of claims to that cash if it so wishes. So long as not everyone wants the cash, no problems will result. And even if everyone did want the cash, the Fed will be there to provide more cash.
In full reserve banking, mutuum contracts and irregular deposit contracts are separate. If I open a checking account (a demand deposit), my money will always be at the bank. If I enter into a mutuum contract (what we call time "deposits" such as CDs, even though they are not deposits at all), I temporarily transfer my ownership of the money to the bank, which then uses that same money to finance loans. There is no money creation here. If I directly loaned my $10000 to someone to buy a car, that would transfer, not create, money. Likewise, when I put my money in a time deposit (read: loan it to the bank) and the bank then loans that money to someone to buy a car, that too is merely transferring, not creating, money.