Money Is a Promise: How Money Is Really Created — and Why Austerity Backfires

Money is a promise to pay, created out of nothing by just two kinds of organisation — and quietly destroyed again every day. Once you see how, the case against austerity becomes very hard to ignore.

Almost every major economy now runs on fiat money. Strip away the mystique and what you are left with is startlingly simple: money is debt, created by governments and commercial banks, and cancelled by taxation and loan repayment. This explainer walks through the mechanics — and the policy conclusion that follows. For the British politics that frame the debate, see our companion piece on UK national debt as the nation's savings.

01 · All money is debt

Under a fiat currency system — the UK, the USA, the eurozone and almost every issuing jurisdiction in the world — money is not backed by gold or any commodity. A unit of money represents a promise to pay, otherwise known as debt. Because money is a promise, every act of money creation records a new obligation between two parties. The note in your pocket and the balance in your bank account are someone else's liability — an IOU that has been made to circulate.

02 · Only two kinds of organisation create money

Only two types of organisation can create money: the government of a jurisdiction that issues its own fiat currency, and the network of commercial banks operating within that jurisdiction. Households, firms and everyone else can move money around — they cannot create it.

03 · How the government creates money

A government creates new money by instructing its central bank to make a loan to it in order to finance its expenditure. This is the source of all new base money. Base money provides the liquidity through which commercial banks settle their liabilities to one another. When the government spends, those reserve accounts are credited; new money exists where none existed a moment before.

04 · How government money is destroyed — and why tax doesn't fund spending

Government-created money is destroyed through the payment of tax. This single fact reorders almost everything most people assume about public finance.

Tax does not fund government spending. Money creation funds government spending. Taxation takes the money the government has created back out of circulation — and then destroys it.

If spending comes first and is financed by money creation, then taxation cannot logically be what pays for it. Tax's primary economic purpose is inflation control — withdrawing money from circulation so spending power does not exceed the goods and services an economy can produce. It is the off-switch that balances the on-switch of public spending. See our deeper analysis in did central banks actually beat inflation?

05 · Bonds neuter money without destroying it

There is a third lever. When the government sells a bond, the money used to buy it is locked away from active use — for long-dated gilts, sometimes for decades. Bonds do not destroy money; they immobilise it. Practically, the effect is not far short of destruction: that money cannot chase goods or bid up prices. Think of it as a savings account at the central bank. Quantitative easing runs this logic in reverse — central banks swapping parked bonds for live, spendable reserves, as they did after 2008 and during the pandemic. The fact that authorities can do this at scale is direct evidence that the supply of money is a matter of policy, not a fixed natural quantity.

06 · Commercial banks also create money

Banks take part in money creation whenever they lend. Contrary to the textbook, a bank does not lend out money that savers first deposited with it. The act of making a loan simultaneously creates a brand-new deposit in the borrower's account. Loan and deposit appear together, from nothing. This money is destroyed by loan repayment. The Bank of England set this out plainly as fact in its 2014 paper, "Money creation in the modern economy".

07 · There is no fixed stock of money

Put the two creators and their two forms of destruction together and a clear truth emerges: there is no fixed stock of money. The amount in circulation at any moment is a running balance.

Because the money supply is a running balance, controlling inflation logically requires the integration of tax policy and monetary policy. The two switches — spending and tax on one side, lending and interest rates on the other — must be operated together. Yet in practice they are run by separate institutions, often pulling in opposite directions. That this integration rarely happens is a major weakness within modern macroeconomics. We unpack the political mechanics in the City is holding Britain hostage.

08 · Why austerity makes the cycle worse

Money creation by banks is pro-cyclical. In booms, banks lend more freely and create more money — pouring fuel on a fire that is already burning. In slumps, new borrowing dries up and repayments rise, so bank money is destroyed faster than it is created. Left to itself, the banking system amplifies the swings of the cycle in both directions.

The implication is decisive. If the money supply is to be maintained across an economic cycle, the government must spend more money into existence during downturns — precisely when banks are creating less and destroying more. Government money creation is the natural counterweight to the banks' pro-cyclical behaviour. Austerity inverts this. By cutting public spending exactly when bank lending is already shrinking, it reinforces the pro-cyclical swing and exaggerates the very downturn it claims to address. The same dynamic explains why the City won't fund what the public sector must — see the City will never fund small business.

09 · The objections — and the answers

"If governments can just create money, why not abolish tax and spend without limit?" Because the real constraint was never the money — it is the productive capacity of the economy. Spend beyond what the economy can supply and you get inflation, not prosperity. Tax and bonds keep that spending within bounds. The limit is real resources and inflation, not an empty Treasury account.

"Doesn't this ignore the risk of runaway inflation or a loss of confidence in the currency?" No — it puts those risks at the centre. The whole point of taxation, in this framework, is inflation control. The argument is not that constraints do not exist; it is that we have misidentified them, treating an imaginary funding constraint as binding while neglecting the genuine inflation constraint. For trader implications, see our guides to developing a trading strategy around macro regimes and how to backtest MT5 through past monetary shifts.

Critics still dispute parts of this picture — particularly the political wisdom of loosening the link between spending and taxation, and the independence of central banks. Those are legitimate debates. But on the underlying mechanics — that banks create money when they lend, and that a sovereign issuer spends before it taxes — the operational description is now widely accepted, including by central banks themselves.

Conclusion

Once you see money as a promise rather than a thing, the rest follows. It is created and destroyed continuously by just two players; it has no fixed quantity; and the job of policy is to balance creation against destruction so prices stay stable and the economy stays employed. Judged against that job, austerity does not merely fail to help in a downturn — it actively makes things worse. Continue with our coverage of national debt as the nation's savings, central banks and inflation, the manual pattern stealth strategy and trending topics.

This article is an explainer on the mechanics of money creation under a fiat currency system. It describes how money is created and destroyed and the policy debates that follow; it is general commentary and not financial, investment or economic advice.