Banks Create Money Out of Thin Air — Here’s How

Money is one of the most familiar features of modern life, yet it remains one of the least understood. We use it every day—to earn, spend, save, invest, and pay taxes—yet the fundamental question of what money actually is, and how it is created, is often misunderstood. This misunderstanding matters. Without a clear grasp of money, it is difficult to make sense of economics, public policy, government spending, or debates about taxation and fairness.

At the heart of the issue lies a deceptively simple idea: money is not a physical object but a system of promises. More precisely, money is debt. Once this principle is understood, many of the mysteries surrounding the economy begin to dissolve. It also becomes clear why widely held beliefs about money—such as the idea that banks lend out deposits or that governments must tax before they can spend—are fundamentally mistaken.

This article sets out a clear and comprehensive explanation of how money is created in the modern economy, focusing on the role of banks—both commercial banks and central banks—and the relationship between government spending, taxation, and inflation. It also explores the broader implications of these processes for economic policy and society.

What Is Money?

Most people instinctively think of money as something tangible: notes and coins. However, these physical forms represent only a tiny fraction of the money in circulation today. In reality, over 95% of money in modern economies exists in electronic form—numbers recorded in bank accounts.

More importantly, even physical cash is not money in the way many assume. A banknote is not valuable because of the paper it is printed on. It is valuable because it represents a promise. In fact, UK banknotes explicitly state that they are a promise to pay.

This leads to a crucial insight: money is not an object but a relationship. It is a promise to pay, or an IOU. Every form of money reflects a liability—someone’s obligation to someone else.

• A banknote is an IOU from the state.
• A bank deposit is an IOU from a bank to its customer.
• A loan is an IOU from a borrower to a bank.

These promises form a vast network of financial relationships that underpin the entire economy. What we perceive as “money” is simply the record of these promises—visible in bank statements, digital balances, or physical notes.

Because money is a promise, it has no intrinsic physical existence. You cannot see or touch the promise itself; you can only see the record of it. This distinction is essential for understanding how money is created and destroyed.

Common Misconceptions About Money Creation

Before examining how money is actually created, it is useful to address several widespread myths.

First, money is not created by printing banknotes. While central banks do issue physical currency, this represents only a small portion of total money. The act of printing notes does not, in itself, create meaningful amounts of money in the modern economy.

Second, money is not created by businesses making profits. When a company earns money, it is receiving existing money from customers; it is not creating new money.

Third, money is not created through hard work or productivity. Work generates goods and services, which are measured in monetary terms, but it does not create money itself.

Fourth, saving does not create money. When individuals save, they are simply holding onto existing money rather than spending it.

The reality is that money creation is a specialised function carried out by banks. No one else can legally create money within the formal financial system.

The Two Types of Banks

To understand money creation, it is necessary to distinguish between two types of banks:

1. Commercial banks – These are the high street banks and financial institutions that individuals and businesses interact with daily.
2. Central banks – In the UK, this is the Bank of England.

Both types of banks create money, but they do so in different ways and for different purposes.

Commercial banks create money through lending. Central banks create money primarily in relation to government spending and the functioning of the banking system.

Importantly, the Bank of England is wholly owned by the UK government. It operates as part of the state’s institutional framework and plays a central role in regulating the banking system. All commercial banks operate under its authority and must comply with its rules.

This means that money creation in the UK is not an unregulated or purely private activity. It is a licensed and regulated process ultimately overseen by the state.

How Commercial Banks Create Money

The most significant source of money creation in the economy is commercial bank lending.

When a bank approves a loan, it does not transfer pre-existing money from someone else’s account. Instead, it creates new money.

This process can be understood through basic accounting.

Suppose a bank agrees to lend £10,000 to a customer. Two things happen simultaneously:

• The bank credits the customer’s current account with £10,000.
• The bank records a loan asset of £10,000 on its balance sheet.

From the customer’s perspective:

• They now have £10,000 in their account (an asset).
• They owe the bank £10,000 (a liability).

This is an example of double-entry bookkeeping. The creation of the loan results in the creation of a matching deposit. New money has come into existence.

Crucially, this process does not require the bank to have £10,000 in cash or reserves beforehand. The act of lending itself creates the money.

This challenges the common belief that banks lend out deposits. In reality, the opposite is true: loans create deposits.

Lending Creates Deposits

When the borrower spends the £10,000, the money moves through the economy. The recipient of the payment will deposit it into their own bank account, either at the same bank or another one.

This deposit is what people typically think of as “savings”. However, it is important to recognise that these deposits originated from lending.

In other words, savings are a by-product of loans, not the source of them.

This insight overturns a deeply entrenched misconception. The idea that banks act as intermediaries—taking in deposits and lending them out—is incorrect. Banks are not simply redistributing existing money; they are creating new money through lending.

The Destruction of Money

If money is created through lending, what happens when loans are repaid?

The answer is that money is destroyed.

When a borrower repays a loan, the bank reduces both:

• The borrower’s deposit (their money)
• The outstanding loan (their debt)

As a result, the money that was originally created disappears. It does not move elsewhere or get recycled; it is simply extinguished.

This process is often difficult to grasp because it runs counter to everyday intuition. However, it follows directly from the nature of money as a promise. Once the promise is fulfilled, it no longer exists.

Thus:

• Money is created when loans are issued.
• Money is destroyed when loans are repaid.

This dynamic means that the total amount of money in the economy is constantly changing.

The Role of the Central Bank

While commercial banks create most of the money in the economy, the central bank plays a unique and crucial role.

The Bank of England acts as the government’s banker. When the government spends, payments are made through the central bank.

In practice, this involves the Bank of England marking up the government’s account—effectively increasing its overdraft—and crediting the accounts of recipients (via commercial banks).

This process creates new money in the economy.

A key legal principle underpins this system: as long as government spending is authorised by Parliament, the Bank of England must facilitate it. It cannot refuse to make payments on behalf of the government.

This means that government spending is not constrained in the same way as household spending. The government does not need to “find” money before it can spend. It creates money through the act of spending itself.

Government Spending and Taxation

If government spending creates money, what role does taxation play?

Contrary to popular belief, taxes do not fund government spending in a direct sense. Instead, taxation serves several different purposes.

First, taxation removes money from the economy. When people pay taxes, their bank balances are reduced, and the corresponding money is effectively cancelled. This helps to control inflation by preventing excessive amounts of money from circulating.

Second, taxation creates demand for the currency. Because taxes must be paid in the national currency (e.g. pounds sterling), people need to obtain that currency. This ensures its widespread use within the economy.

Third, taxation can be used to redistribute income and wealth, address inequality, and influence behaviour (for example, through taxes on tobacco or carbon emissions).

The sequence is important:

• The government spends money into the economy.
• Taxes are then collected to withdraw some of that money.

This reverses the common assumption that taxes must be collected before spending can occur.

Why the Government Is Not Like a Household

A frequent analogy in public debate is that governments must manage their finances like households—living within their means and avoiding excessive debt.

This analogy is misleading.

Households cannot create money. They must earn income or borrow existing money to spend. Governments, by contrast, issue their own currency and can create money through their central bank.

This does not mean that governments face no constraints. However, their constraints are not financial in the same way as those faced by households.

The real limits on government spending are:

• The availability of resources (labour, materials, technology)
• The risk of inflation

If the government spends beyond the capacity of the economy to produce goods and services, prices will rise. Inflation, not insolvency, is the primary constraint.

Inflation and Real Resources

Understanding the relationship between money and real resources is essential.

Because money is a promise, it can be created relatively easily. However, fulfilling those promises depends on the availability of real goods and services.

If additional money is created without a corresponding increase in production, there will be more money chasing the same amount of goods. This leads to inflation.

Therefore, responsible economic management requires aligning money creation with the productive capacity of the economy.

This shifts the focus of policy away from arbitrary financial limits and towards real-world constraints.

The Political Implications

Misunderstanding money has significant political consequences.

If people believe that money is scarce and that governments must “save” before they can spend, they are more likely to accept austerity policies—cuts to public services and investment.

However, if it is recognised that governments can create money, the debate changes. The key question becomes not “Can we afford it?” but “Do we have the resources to do it without causing inflation?”

This has implications for issues such as:

• Funding healthcare systems like the NHS
• Investing in infrastructure and housing
• Addressing climate change
• Reducing inequality

A clearer understanding of money challenges the notion that such initiatives are unaffordable. Instead, it emphasises the importance of resource allocation and economic capacity.

The Myths of Austerity and Scarcity

The belief that governments face strict financial limits contributes to several persistent myths:

• That public services are underfunded because there is “no money”
• That deficits are inherently dangerous
• That high levels of inequality are unavoidable

These ideas are rooted in a misunderstanding of how money works.

In reality, money is not a finite resource like oil or land. It is a system of accounting—a set of promises that can be expanded as needed.

The real challenge lies in ensuring that these promises can be honoured through the production of goods and services.

The Importance of Understanding Money

A proper understanding of money is not merely an academic concern. It has practical implications for policy, governance, and social outcomes.

When money is misunderstood:

• Economic policy may be unnecessarily restrictive
• Public investment may be limited
• Inequality may be exacerbated
• Social needs may go unmet

Conversely, a clear understanding enables more informed decision-making and opens up possibilities for addressing major societal challenges.

Conclusion

Money is often treated as a mysterious and scarce resource, but in reality it is a system of promises—created and managed by banks under the oversight of the state.

Commercial banks create money through lending, generating deposits in the process. Central banks facilitate government spending, which introduces new money into the economy. Taxation then serves to withdraw money, control inflation, and shape economic outcomes.

The key insight is that money is not the primary constraint on economic activity. Real resources and inflation are the true limits.

Recognising this has profound implications. It challenges long-standing myths about government finance, reshapes debates about public spending, and highlights the importance of managing the economy in a way that prioritises well-being and sustainability.

Ultimately, understanding money is the first step towards understanding the economy—and towards making better choices about how it is governed.