Professor Steve Keen: Austerity Economics Is Naive & Childish

Modern Monetary Theory (MMT) explains that sovereign governments that issue their own currency can never run out of money because they create currency through spending rather than collecting taxes first; their spending capacity is limited only by real resources (labor and materials) and inflation constraints, not financial constraints, making large-scale government spending feasible without requiring prior tax revenue or foreign currency debt.

Modern Monetary Theory (MMT) holds three fundamental beliefs: (1) The government and Federal Reserve are currency issuers, not users, which allows unlimited spending; (2) Treasury bonds are issued solely to control bank reserves and short-term interest rates, not to fund deficit spending; (3) The only constraint on government spending is inflation, which can be addressed by increasing taxes.

Modern Monetary Theory (MMT) explains that governments that issue their own currency and control monetary policy cannot run out of money and are not constrained by traditional fiscal sustainability concerns; instead, their spending is limited by real resource constraints and inflation risks, making government spending capable of stimulating employment without crowding out private sector activity.

MMT replaces artificial financial constraints with real inflation constraints. Since the government can always create currency, it cannot default or go bankrupt. However, excessive spending relative to economic capacity causes inflation, not insolvency. The Federal Reserve admits it lacks reliable inflation models, and central banks worldwide struggle with disinflationary pressures. MMT proposes a federal job guarantee as superior inflation protection compared to interest rate adjustments, which penalize savers while helping borrowers.

Modern Monetary Theory (MMT) is an economic framework that argues governments with currency sovereignty (like the US, UK, and Japan) can spend freely without financial constraints since they can always create more money, with inflation being the only real constraint; unlike traditional economics where governments must first raise revenue through taxation or borrowing, MMT proponents view taxes as tools to control inflation rather than fund spending, and advocate for fiscal policymakers to manage inflation while central banks monetize government debt, enabling larger government spending on priorities like full employment and climate change mitigation.

The European sovereign debt crisis demonstrated that austerity policies cause devastating consequences. When Germany and other Eurozone countries imposed strict budget consolidation, Greece, Italy, Spain, and Portugal experienced economic collapse. Welfare states were dismantled, collective bargaining systems destroyed, party systems shaken, and political polarization intensified. This proved that cutting social benefits during crisis leads to social and political catastrophe, as historical lessons show that social crises naturally undermine democracy. The ECB eventually reversed course, recognizing that austerity doesn't work and expansionary impulses are necessary for recovery.

After the 2010 European debt crisis, austerity policies were applied across Europe, including wage cuts and public spending reductions. These policies failed to stimulate growth - European economies performed worse than the US, which pursued deficit spending. The austerity approach was based on outdated theories that deflation would improve competitiveness, but it ignored that deflation also reduced demand and investment, creating a vicious cycle of economic contraction.

Greece's debt crisis demonstrates the failure of austerity measures. Starting with 146% debt-to-GDP ratio in 2010, after six years of austerity (including 25% GDP collapse, 25% salary cuts, 20% pension cuts, and 22.5% unemployment), Greece's debt actually increased to 186% of GDP. This shows that austerity measures can worsen rather than solve debt problems.

Between 2010-2014, Greece implemented severe austerity measures under Troika guidance: fiscal pressure increased by 5 percentage points, public spending fell 25%, and monetary conditions deteriorated by 20 percentage points. Real wages declined 14 percentage points, with some sectors dropping 30%. Despite these measures, European Commission GDP predictions proved catastrophically wrong, with actual results 7 percentage points below forecasts. The competitiveness improvements came at the cost of severe income and liquidity declines. A September 2013 analysis predicted these policies would destabilize rather than stabilize the Eurozone, reducing its survival probability. This case demonstrates that austerity measures may not achieve their intended stabilization goals and can paradoxically undermine the stability they claim to promote.

Austerity policies implemented during economic slumps are counterproductive because they reduce aggregate demand, increase debt-to-GDP ratios, and undermine economic recovery; the European sovereign debt crisis was actually a banking crisis that was politically reframed to justify cuts, and historical evidence shows that austerity only works during economic booms when countries have their own currency and can export to growing economies, not during recessions when simultaneous spending cuts among trading partners create a zero-sum game that destroys economic activity.

The theory of endogenous versus exogenous money has been debated among economists for over 100 years. Endogenous money theory posits that money supply is determined by banks through credit creation, not directly by central banks. Modern consensus, as stated by central banks worldwide, supports endogenous money: for a given amount of base money, banks can create more or less money through lending decisions. Central banks directly control two types of money: physical cash and bank reserves (electronic accounts of commercial banks at the central bank). However, commercial banks create the majority of money supply through credit expansion. When banks make loans, they create new money through accounting entries, not by distributing existing central bank money. This is why central banks control interest rates to influence credit creation, not the total money supply directly. The broader money supply (M1, M2) is the result of bank lending behavior, not direct central bank control.

Modern commercial banks create money through credit issuance without requiring pre-existing funds. When a bank issues a loan, it simultaneously creates a deposit on the borrower's account through double-entry bookkeeping: recording a loan (asset) and a deposit (liability) simultaneously. The borrower receives the loan amount as spendable funds while the bank records the debt. Banks create money through multiple channels: credit creation, currency exchange (creating domestic deposits when converting foreign currency), and purchasing securities (creating deposits when paying for assets). This process creates money 'out of thin air' based on economic demand rather than central bank supply. The theory of endogenous money states that commercial banks create money based on economic demand rather than central bank supply. Regardless of what central banks do, the economy will generate the amount of money it needs through bank lending. This contrasts with traditional views that central banks control money supply through printing.

Two theories explain money supply determination: Exogenous theory holds that central banks control money supply through high-powered money issuance. Endogenous theory holds that money supply responds to economic activities and people's desire to hold currency. When people prefer holding currency (due to low interest rates or uncertainty), they withdraw deposits, reducing banks' lending capacity and decreasing money supply. Conversely, when people prefer deposits, money supply increases.

The fundamental principle of endogenous money theory is that loans create deposits, not the other way around. When private banks make loans to firms or consumers, they simultaneously create new demand deposits in borrowers' accounts. This contradicts the orthodox view that banks first accept deposits and then lend out a fraction. The deposit is created as a byproduct of the lending process itself. Additionally, deposits create reserves—banks need to obtain reserves from central banks to settle payments, and central banks always accommodate this demand, making both reserves and money supply endogenous to economic activity. Horizontalism, developed by Basil Moore, argues that central banks target interest rates (Fed Funds rate), making the supply of reserves perfectly elastic at that target, implying money supply is endogenous—it adjusts automatically to whatever level is needed to maintain the interest rate target.

Endogenous money refers to money created within the economy by commercial banks through lending, which is difficult for central banks to control. Exogenous money refers to money supplied externally by the central bank, such as physical cash. In the UK, only about 3% of money supply is cash (exogenous), while 97% is deposits (endogenous). This distinction is crucial because endogenous money creation is driven by bank lending decisions rather than central bank policy. The Bank of England raised this issue because the majority of money creation occurs through bank lending, which central banks cannot easily regulate or predict.