Where Does Money Come From?

Banks create new money every time they make a loan. Governments create money when they spend and destroy it when they tax. The textbook story of banks lending out savers' deposits is backwards.

In conventional economics, money originates through a combination of central bank operations and the banking system. The central bank (like the Federal Reserve) creates base money through open market operations and sets monetary policy, while commercial banks create money endogenously through the lending process—when a bank makes a loan, it simultaneously creates a deposit liability and an asset, expanding the money supply. Money supply is thought to be constrained by reserve requirements, monetary aggregates, and the central bank's policy rate. Mainstream theory emphasizes that government spending must be 'funded' by either taxation, borrowing, or money creation, with the implicit concern that excessive money creation leads to inflation. The narrative often begins with barter as a natural precursor, suggesting money emerged to solve transaction problems in markets.

MMT reveals a fundamentally different operational reality: in a sovereign currency system, the government as currency issuer creates money by spending—literally through keystrokes at the central bank (as Warren Mosler describes, 'it comes from the guy's thumb at the Fed Reserve Bank'). When government spends, it credits bank accounts and creates new money; when government taxes, it destroys money by removing it from circulation. Taxes do not fund spending operationally—they function to drive demand for the currency (people must work and earn the government's money to pay taxes) and to regulate aggregate demand and inflation. The archive on endogenous money and sectoral balances shows that whatever the government deficit is (G minus T), the non-government sector's net financial asset position equals that same amount—this is an accounting identity, not a policy choice. Money does not originate from scarcity or barter; historical and anthropological evidence (cited via David Graeber and the archive discussion of temples and credit systems) shows that credit and accounting systems preceded commodity money. In a modern fiat system, the real constraints on government spending are not financial but real: the availability of labor, resources, and productive capacity, and the need to avoid inflation when the economy is at full resource utilization.

Banks create new money every time they issue a loan. When a bank approves your mortgage, it does not go to a vault, find a pile of cash, and hand it over. It types numbers into your account. That deposit did not exist before. The loan created it. This is how the overwhelming majority of money enters the economy.

How Banks Create Money When They Lend

The standard economics textbook tells a story about the "money multiplier." A saver deposits money in a bank. The bank keeps a fraction as reserves and lends out the rest. The borrower deposits the loan in another bank, which lends out most of that, and so on. In this story, banks are middlemen between savers and borrowers, and the central bank controls the money supply by setting reserve requirements.

Every part of that story is wrong. The Bank of England confirmed this in its 2014 Quarterly Bulletin, titled "Money Creation in the Modern Economy." The paper states plainly: "Whenever a bank makes a loan, it simultaneously creates a matching deposit in the borrower's bank account, thereby creating new money." Banks do not lend out deposits. They create deposits when they lend. The Bundesbank published a similar paper in 2017 reaching the same conclusion.

This means that lending is not constrained by the amount of savings in the economy. Banks create credit based on their assessment of the borrower's ability to repay, subject to capital adequacy rules and their own risk appetite. Reserves are obtained after the fact, not before. The central bank supplies whatever reserves are needed to keep the payments system functioning.

In practice, when you take out a mortgage for 200,000 pounds, the bank creates a 200,000 pound deposit in your account and a 200,000 pound loan on its books. Both sides of the balance sheet expand simultaneously. No existing depositor's balance decreases. No vault is emptied. The money supply has just increased by 200,000 pounds. When you repay the loan over 25 years, the process reverses: each repayment destroys money. This is why the vast majority of money in circulation exists as bank deposits created through lending, not as physical notes and coins printed by a central bank. In the UK, roughly 97% of the money supply consists of bank deposits.

This has a crucial implication. If money is created by lending, then the money supply rises when banks are willing to lend and borrowers are willing to borrow. During a boom, credit expands rapidly and the money supply grows. During a recession, lending contracts, repayments exceed new loans, and the money supply shrinks. The central bank can lower interest rates to encourage borrowing, but it cannot force banks to lend or businesses to borrow. This is why monetary policy alone often fails to pull an economy out of recession.

How Government Spending Puts Money Into the Economy

Government spending is the other major channel through which money enters the economy. When the government pays a contractor, a teacher, or a pension recipient, the Treasury instructs the central bank to credit the recipient's bank account. Those funds did not come from a vault or a tax collection. The government created them by spending.

This is directly connected to the question of whether taxes fund government spending. The operational reality is that spending comes first. Taxes remove money from circulation afterwards. The government does not need to collect money before it can spend, because it is the original source of the money.

During the Covid-19 pandemic, the UK government spent over 370 billion pounds on emergency support. The US spent trillions. Neither country needed to "find" this money first. It was created through government spending, exactly as MMT describes. No taxes were raised in advance. No savings accounts were raided. The money was created by crediting bank accounts, the same way every government payment has worked since the gold standard ended.

The two channels of money creation serve different purposes. Bank lending creates money for private transactions: mortgages, business loans, credit cards. Government spending creates money for public purposes: healthcare, defence, infrastructure, pensions. Both are forms of money creation, but they operate under different constraints. Banks are constrained by profitability and capital rules. Governments are constrained by the economy's productive capacity and the risk of inflation.

Why the Textbook Story Gets It Backwards

The conventional model assumes that saving must come before investment, that deposits must come before loans, and that the government must collect before it can spend. Each of these claims reverses the actual sequence.

Investment creates saving, because spending by one person is income to another. Loans create deposits, because the act of lending generates a new deposit balance. Government spending creates the money that the private sector then uses to pay taxes. The causal arrow runs from spending to revenue, not the other way around.

The persistence of the wrong model in textbooks has real consequences. Students graduate believing that banks lend out deposits, that the money supply is controlled by the central bank through reserve ratios, and that governments must "find" money before spending. These beliefs then shape policy debates, leading politicians to claim we "can't afford" public services when the actual constraint is whether we have the real resources to deliver them: the workers, materials, and productive capacity.

Even the language we use reflects the backward model. We speak of governments "raising" money and "finding" revenue, as if the money exists somewhere and must be located. In reality, money is created continuously through the operations of the banking system and the Treasury. It is not a fixed stock to be discovered but a flow that is created and destroyed as part of the normal functioning of a modern economy.

What This Means for Economic Policy

Understanding where money comes from changes everything about economic policy. If banks create money by lending, then the money supply is not controlled by the central bank through reserve ratios. It is driven by the demand for credit and banks' willingness to lend. This is why quantitative easing, which flooded banks with reserves, did not produce the inflation that many predicted. Reserves do not "multiply" into loans. Banks lend when creditworthy borrowers want to borrow, regardless of their reserve position.

If government spending creates money, then the government is not financially constrained like a household. It faces real resource constraints, not financial ones. The question is never "where will we find the money?" The question is always "do we have the doctors, teachers, builders, and engineers to deliver what the spending aims to achieve?" When millions of people are unemployed and factories sit idle, the answer is plainly yes.

This connects directly to how money is created in the modern economy. The process is not mysterious. It is a straightforward accounting operation that happens millions of times a day, every time a bank approves a loan or a government makes a payment.

The implications extend to international development as well. Developing countries are often told they must attract foreign investment before they can develop, because they lack the savings to fund investment domestically. But if banks create money by lending and governments create money by spending, the domestic financial system can fund development without first accumulating foreign savings. The constraint is real: trained workers, technology, infrastructure. But the financial constraint is artificial, imposed by an incorrect understanding of how money works.

To see how money flows between the government, banks, and the private sector, explore the Sankey flow diagram, which maps these relationships visually.

Banks create money when they lend. Governments create money when they spend. The textbook story is backwards. The Bank of England confirmed this in 2014.