You were taught that banks lend out deposits and the government prints money when it needs it. Both are incomplete. The actual mechanism is stranger, and more consequential, than most people ever learn.
The Federal Reserve is America's central bank. It can create money out of thin air, set how expensive it is to borrow, and decide how much credit flows through the economy. None of its members are directly elected by the public.
The Federal Reserve is the central bank of the United States. Created by Congress in 1913, it's structured as a hybrid public-private institution: technically government-chartered but privately owned by its member banks. It operates independently of the executive branch and isn't directly accountable to voters.
Congress gave the Fed two goals: price stability (targeting ~2% annual inflation) and maximum employment. These goals frequently conflict. Fighting inflation requires raising rates, which slows the economy and kills jobs. The Fed is perpetually managing this tension, and often getting it wrong.
The interest rate at which banks lend reserve balances to each other overnight. This is the most visible policy lever. When the Fed raises rates, borrowing gets more expensive across the entire economy: mortgages, car loans, business credit, all rise together. When it lowers rates, credit gets cheap and people borrow more.
The New York Fed buys and sells Treasury securities daily in the open market. When the Fed buys Treasuries, it credits the selling bank's reserve account, creating new base money. When it sells, it removes base money. This is the primary mechanism for controlling short-term interest rates.
Since 2008, the Fed pays banks interest on the reserves they hold at the Fed. This is a relatively new tool. By raising IORB, the Fed makes it profitable for banks to sit on reserves rather than lend them out, effectively tightening credit without raising the headline rate.
When rate cuts aren't enough (like when rates are already near zero), the Fed buys longer-term assets directly: Treasuries and mortgage-backed securities. This injects reserves and pushes down long-term borrowing costs. It's the "nuclear option" of monetary policy. More on this below.
When you get a mortgage, your bank doesn't move money from one account to yours. It literally types a new number into a computer and that money is created on the spot. This is how 97% of all money in existence was born: not by the government, but by banks making loans.
This is the most important thing most people never learn about money. When a commercial bank makes a loan, it doesn't transfer existing money from one account to another. It creates brand new money by simply typing a number into a ledger.
"Whenever a bank makes a loan, it simultaneously creates a matching deposit in the borrower's bank account, thereby creating new money."
Bank of England Quarterly Bulletin, 2014, "Money Creation in the Modern Economy"Approximately 97% of the money in circulation in developed economies was created by commercial banks via lending, not by governments or central banks. Physical cash is a tiny fraction of the money supply. Every dollar in your bank account is someone else's debt.
Since money is created with interest attached, there is always more debt than money in existence to repay it. The system can only function if new loans are constantly created to service old ones. Economic contraction (when credit shrinks) causes the money supply itself to shrink, triggering recessions.
When banks decide to lend (and to whom), they are effectively deciding where new money flows in the economy. During housing booms, banks create massive amounts of mortgage money, inflating home prices. During credit crunches, they stop and asset prices collapse.
Bitcoin cannot be created via credit. Every satoshi that exists was earned by a miner solving a proof-of-work puzzle. There is no fractional reserve Bitcoin; self-custodied Bitcoin cannot be lent out without your permission. The supply is inelastic to demand.
When the economy crashes and interest rates are already near zero, the Fed has one more move: it creates new money and uses it to buy government bonds from banks. More money enters the financial system. Banks get richer, stocks go up, and eventually prices rise for everyone else.
When short-term interest rates reach zero and the economy still needs stimulus, the Fed deploys QE. It buys large quantities of long-term bonds from banks, paying for them by crediting those banks' reserve accounts with newly created money. This is the closest thing to "printing money" in modern central banking.
QE injects reserves into the banking system, not into households. Banks use those reserves to buy financial assets: stocks, bonds, real estate. This inflates asset prices. People who own assets see their net worth surge. People who rent or own no investments see nothing, except higher prices when the money eventually filters through to consumer goods.
The government's ability to run perpetual deficits depends on a quiet coordination between the Treasury and the Fed, a process that effectively monetizes debt while maintaining plausible deniability about money printing.
The Fed technically cannot buy bonds directly from the Treasury; it must go through the secondary market. But when it buys the same bonds the banks just purchased at Treasury auction, the economic effect is identical to direct monetization. The extra step is a legal formality.
New money doesn't reach everyone at the same time. Banks and large investors get it first. They buy assets before prices go up. By the time the money reaches your grocery store or rent payment, prices have already risen. You get the inflation without the head start.
Richard Cantillon, an 18th-century economist, observed that newly created money doesn't distribute evenly. It flows to some people before others, giving them an advantage before prices adjust. This insight is more relevant today than ever.
The modern economy doesn't move in simple cycles. It moves in credit cycles. As credit expands, money supply grows, economic activity accelerates, asset prices rise, and people feel wealthy. When credit contracts, voluntarily or by force, the opposite occurs.
Fed lowers rates β banks lend freely β new money floods economy β asset prices rise β borrowers feel wealthy β they borrow more β cycle accelerates. Everyone looks like a genius. Risk is underpriced.
Inflation rises β Fed raises rates β credit becomes expensive β new lending slows β money supply growth stalls β asset prices fall β borrowers default β banks tighten β credit contracts further β recession. The same mechanism that created the boom destroys it.
Over decades, each short-term cycle is managed with more stimulus than the last. Each recession is fought with lower rates and more QE. Each recovery leaves more total debt. Ray Dalio calls this the "long-term debt cycle." It ends when debt levels become so large they can no longer be serviced at any interest rate. The only exits are default or inflation.
"In the absence of the gold standard, there is no way to protect savings from confiscation through inflation. There is no safe store of value."
Alan Greenspan, Federal Reserve Chairman, 1966 (before he ran the Fed for 18 years)Last updated 2026-04-14. Not financial advice. Do your own research.