On your question about how new dollars enter the economy, I’d point first to private credit creation. When commercial banks issue loans, they simultaneously create deposits — that’s where most new money originates.
That's right, that's great! But what the AI didn't explain (and I think it's great people are using AI), is the difference between government money, private sector credit, and the role of the Fed. Remember what I said about concepts that are easy to connect, the trick is "seeing" all of the connections.
You can think of new money entering the U.S. economy from two distinct sources: the government and private commercial banks. It’s best to imagine them as two different kinds of "money faucets."
Faucet #1: The Government (Creates "Outside" Money)
When the U.S. government spends, it creates new money that didn't exist before. This is the
only source of new dollars. Conceptually, think about a tub with about 1" of water in it. Now pour in some bubble bath and whip up the water until the tub is full of bubbles. The bubbles are private sector credit and the water is government dollars. You can't make bubbles without water just as banks can't create loans without government spending dollars into the economy first.
This is "exogenous" or "outside" money. It's a net new financial asset for the private sector. A person or company is richer, and no one in the private sector took on a new debt to make it happen. This is a unique power of a monetarily sovereign government. Taxation works in the reverse, removing this money from the economy.
So here is the first link, government money to bank money....
Faucet #2: Commercial Banks (Create "Inside" Money)
This is what your answer described. When you get a loan from a bank, for a car, a house, or a business, the bank doesn't lend you someone else's savings. It creates a new deposit in your account with a few keystrokes. At that same instant, a loan is created on the bank's books.
Bank credit.
This is "endogenous" or "inside" money. It's created
within the banking system. Unlike government spending, this form of money creation is a credit/debt swap. You have a new asset (the deposit), but you also have a new liability (the loan). For the bank, it's the reverse. The important thing to understand is that they net to zero, but because loans exist until they are repaid. Bank loans add money like this:
(total lent) - (amount repaid)=Bank credit in circulation.
Last time I looked it was $144 trillion lent and $77 trillion still outstanding.
Recap....
Here's the critical link: The government's "outside" money provides the fundamental building blocks, called reserves, that the banking system operates on. While a bank can create a loan before it has reserves needs to acquire reserves to settle transactions with other banks (to make sure our checks clear). Government spending is what seeds the entire system with these essential reserves (the water at the bottom of the tub).
The Fed sits in the middle as the master regulator of these reserves. It doesn't typically create money through spending. Instead, its job is to manage the
quantity and
price (interest rate) of reserves in the system to keep payments flowing smoothly and implement monetary policy. Through open market operations, it can swap reserves for bonds (or vice-versa) (swapping water for bubbles or bubbles for water), influencing interest rates without changing the net wealth of the private sector.
In summary: The government creates the foundational, debt-free money for the private sector through its spending (the "debt" is held on the government side). On top of that foundation, the private banking system builds a much larger volume of "credit money" through lending. The Fed manages the system to ensure it all works. Your response was spot on, but left out the government's role, the very origin of the money that underpins the entire banking system.
Now, going back to the post I was responding to, if you limit government spending (reserves or the water in the bottom of the tub) to taxes collects, you limit the amount of credit that can be created without increasing leverage (more bubbles per volume of water). This is exactly what played out in 2008.
From 1993-2000 the government reduced reserves (water in the tub) and the private sector responded by making more bubbles, this increased leverage and risk as smaller fluctuations had bigger impacts and risk was carried by private institutions, not the government.
On the other hand if spending and taxes are equal and leverage is managed, the economy stagnates because the capacity to create more increases (more people more technology), but money stays the same. Deflation is the result as more and more people compete for the same pool of money.