My view on … modern monetary theory

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My View on …

Modern Monetary Theory

Richard J Murphy

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This post is part of an ongoing series in which I set out my views on significant issues in economics, political economy, politics, taxation, and accounting. It should be read in that context. It provides an overview of a position that I have developed over many years of writing and analysis, rather than a comprehensive treatment of the subject. If you would like to explore these ideas in more detail, the reading list at the end of this post provides a good place to start.

The whole View On series is available here. 

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How money works

Modern monetary theory is not a manifesto, and it is not a set of political demands. It is an explanation of how money is created and used in a country that issues its own currency, has its own central bank and can borrow in that currency without restriction. The United Kingdom fits that description precisely. When I set out my view on this subject, I am not arguing for something new. I am describing something that already happens every single day. What follows sets out how that process works, why the comparison between government and household finances fails, and what limits spending once that comparison is abandoned.

The starting point is simple, even though it overturns almost everything most people were taught at school. Government spending comes first. When the Treasury wants to pay a nurse, fund a school or settle a contract, it instructs the Bank of England to make that payment. The Bank does so by marking up the government's account, and in doing so it creates new money. Taxation follows later. It does not fund what has already been spent, because the money used to pay tax could not exist in the first place unless government had put it into circulation. Spending creates the money. Taxation removes some of it again.

This single reversal, spending before taxation rather than taxation before spending, changes the whole basis on which we should think about public finance. Governments like ours are not constrained by a shortage of pounds in the way that a household or a business is constrained by a shortage of money in its account. A currency-issuing government can always settle its obligations in its own currency. That is a fact about how our monetary system operates, not an opinion about how it should be run.

The household analogy and why it fails

The most persistent obstacle to understanding any of this is what I call the household analogy, the endlessly repeated comparison between a national government and a family sitting around the kitchen table working out what it can afford. It is intuitive, it is easy to explain in a soundbite, and it is entirely wrong when applied to a government that issues its own currency.

A household cannot create the money in which its debts are denominated. If a family's income falls, sooner or later its spending must fall too, or it must borrow from someone else who does have money to lend, and eventually that borrowing must be repaid or the household risks losing its home. None of this applies to a government issuing its own currency through its own central bank. It is not a user of money in the way that you and I are. It is the issuer of the money the rest of us use, and issuers do not face the constraints faced by users.

Chancellors nonetheless persist in talking about maxing out the country's credit card, or living within our means, because the analogy is politically convenient. It disciplines expectations without ever requiring an argument about who should bear the cost of restraint. Once the analogy is exposed as false, the argument for austerity has to be made honestly, as a choice about priorities and distribution, rather than dressed up as an unavoidable financial necessity, and that is a far harder argument for its advocates to win.

Why taxation exists, if not to fund spending

If tax does not pay for spending, the obvious question is why we tax at all. I have set out my answer to this many times, because I think it matters enormously to how we talk about politics. There are several distinct reasons, and none of them involves raising revenue to hand to the Treasury so that it can then decide what to spend.

First, tax ratifies the currency. By requiring that liabilities to the state be settled in pounds, government forces the pound into everyday use across the economy, because businesses and individuals need to hold and trade in the currency they will eventually need to pay their tax bills.

Second, tax reclaims some of the money that government has spent into the economy, and in doing so it manages inflation. If government spent without ever taxing anything back, there would eventually be far more money chasing a limited supply of goods and services, and prices would rise. Tax withdraws purchasing power to keep that process under control, and it also creates space within the economy for public services to be supplied without simply adding new spending on top of an already fully used private sector.

Third, tax redistributes income and wealth. Markets concentrate both in the hands of a small number of people over time, and progressive taxation is one of the few tools available to correct that tendency and to fund social security in the process, not because social security needs the specific pounds raised, but because redistribution requires a mechanism, and taxation is that mechanism.

Fourth, tax reprices behaviour. We tax carbon, tobacco, alcohol and speculative gains, among other things, because we want less of the harm that these activities cause, and we exempt or subsidise activities we want to encourage.

Fifth, tax underpins democratic accountability, because a population that pays tax every week and every month has a continuing stake in how government spends and a reason to demand that it does so well.

Sixth, tax lets government reorganise the economy in pursuit of long-term goals, whether that is a green transition, an industrial strategy or the correction of monopoly power.

None of this is a minor technical point. Once the household budget analogy is abandoned, and once it is understood that taxes do not pay for the NHS, education or social security in any literal sense, the question that dominates British politics, namely how will we pay for it, is exposed as the wrong question entirely. The right question is always whether the country has, or can create, the real resources required to deliver what is being proposed.

Sectoral balances and the private sector surplus

Underneath this description of tax and spending lies an accounting framework that I regard as one of the most useful and most neglected tools in economics, developed in large part by the Cambridge economist Wynne Godley. It is called sectoral balances, and it states an identity that must always hold true. The financial balance of government, the financial balance of the private domestic sector and the financial balance of the rest of the world must, taken together, sum to zero.

What this means in practice is that when government runs a deficit, that deficit is, pound for pound, a surplus somewhere else in the economy, most often in the hands of households and businesses who are saving. A government surplus, by contrast, can only be achieved by pushing the private sector, or the overseas sector, into deficit instead. There is no way round this arithmetic. It is not a theory that can be disputed. It is an accounting identity, and it should discipline the whole of the debate about the public finances far more than it currently does.

This is why I regard austerity as almost always economically counterproductive rather than merely unpleasant. Cutting government spending or raising taxes to close a deficit does not make that deficit disappear. It transfers it onto households and firms, who are then forced further into debt to sustain their own spending, or forced to cut back, with all the human costs that follow. Politicians who promise to balance the books while also promising growth are, whether they realise it or not, promising two things that cannot coexist unless the private sector or the overseas sector absorbs the resulting deficit instead.

The national debt reconsidered

Few areas of public debate are more thoroughly misunderstood than the national debt, and I have spent a great deal of time trying to correct that misunderstanding. What is called the national debt is not owed to some external creditor threatening to call in the loan. It is made up of notes and coins in circulation, National Savings and Investments accounts held by ordinary savers, and government bonds, or gilts, bought by pension funds, insurance companies, banks and overseas investors who want a safe place to hold sterling.

Every one of these things is, from the point of view of the person who holds it, an asset rather than a burden. A pound coin in your pocket is part of the national debt. A National Savings certificate is part of the national debt. A pension fund's holding of gilts, upon which millions of retirement incomes ultimately depend, is part of the national debt. None of these things needs to be, or should be, repaid in the sense that a mortgage needs to be repaid, because repaying them would mean destroying the very savings and the very money supply that the economy depends upon in order to function.

Bonds themselves are not evidence that government has been forced to borrow because it has run short of money. Government could, in principle, meet all its spending needs through instructions to the Bank of England without ever issuing a single gilt. It issues bonds instead because pension funds, banks, insurers and overseas holders of sterling need somewhere secure to place very large sums, and because the government, uniquely, can never fail to make good on what it has promised to repay. Bonds are a savings facility provided as a service to the financial system, not a funding mechanism forced upon a government that has run short of cash.

It follows that the idea of bond markets holding government to ransom, disciplining reckless spending through the threat of higher yields, is largely a story told to frighten politicians rather than an accurate account of how power actually operates. The Bank of England sets the base rate, and through its operations it can, and repeatedly has, brought yields back under control when it has chosen to do so. Those who trade gilts are not guardians of fiscal virtue. They are people looking to profit from buying and selling debt, and no more than that.

Inflation and the real limits on spending

None of what I have set out here means that government can spend without consequence, and I want to be entirely clear about that, because critics of modern monetary theory frequently claim otherwise, and some of its less careful advocates have occasionally given them grounds to do so. The genuine constraint on government spending is not the availability of pounds. It is the availability of real resources, meaning labour, skills, energy, materials, productive capacity and the ecological limits within which any economy must operate.

When government spends into an economy that has spare capacity, whether that is unemployed workers, underused factories or idle infrastructure, it puts those resources to work without generating inflation, because output rises to match the new spending. When government spends into an economy that is already working at full capacity, additional money simply bids up prices for a supply of goods and services that cannot expand quickly enough to absorb it. That is inflation, and it is a genuine and serious constraint.

This is why I regard modern monetary theory as being obsessed with inflation rather than indifferent to it, whatever its critics claim. The whole point of understanding how money is created and destroyed is to manage that process well enough to avoid both the deprivation caused by unnecessary austerity and the instability caused by spending beyond what the real economy can sustain. Taxation, targeted at those sectors and individuals with the greatest capacity to absorb it without hardship, remains the primary tool for controlling demand within this framework, rather than the blunt instrument of interest rate increases, which take a long time to act, fall hardest on those with mortgages and debts, and do nothing to address inflation caused by energy shocks, supply disruption or corporate profiteering.

The objections that deserve an answer

Three objections are raised almost every time I make this argument.

The first always refers to the cases of Weimar Germany and Zimbabwe. Both are offered as proof that governments creating money inevitably produce hyperinflation. Neither case does, however, resemble the situation described here. Germany faced reparations payable in a foreign currency that it could not issue. Zimbabwe destroyed much of its own productive economy while also owing debts abroad. In both cases, the real capacity of the economy collapsed. They were not examples of governments spending their own currency into economies with unused resources. The lesson is not that government spending always creates inflation. It is that when real supply collapses, prices rise. That is worth noting, but has nothing to do with most modern economies where the relevance of modern monetary theory is being discussed.

The second objection is that this argument amounts to advocating unlimited money creation. It does not. The limit has never been the number of pounds the government can create. The limit is the availability of real resources, people, skills, technology, energy and raw materials. Spend beyond the economy's capacity to respond, and inflation will follow. That is not a failure of the analysis. It is precisely what the analysis predicts.

The third objection is political. Those making this objection ask, if modern monetary theory does really describe how money works, why do governments still talk about balancing the books and imposing fiscal rules? The answer is straightforward. The fact is that the household budget story is politically useful. It lets politicians say they cannot do things when the reality is that they do not want to do them, which is something quite different, and which they do not wish to justify. That analogy permits restraint, narrows political debate and diverts attention from questions about what governments could choose to do. Whether that story is convenient tells us nothing about whether it is true. Politics does not determine how money works. It merely determines how politicians choose to describe it, which is something quite different.

Austerity as a choice, not a necessity

If the household analogy is false, as I suggest to be the case, it follows that austerity was always a political choice rather than an economic necessity, and I regard this as one of the more important consequences that follows from taking modern monetary theory seriously.

The years after the 2008 financial crisis saw public services, local government and social security cut on the claim that the country could not afford to do otherwise, at the very same time as the government making that claim was creating hundreds of billions of pounds through quantitative easing to support the banking system.

I do not regard this as a phenomenon confined to one political party. The Labour government elected in 2024 inherited both the opportunity to abandon the household analogy and the political consensus built up over more than a decade that made it fearful of doing so, and in my view it has continued a form of austerity while declining to use that word to describe it, preferring instead to speak of fiscal rules, headroom and responsible borrowing, all of which are simply the old constraints dressed in new language. Genuine fiscal responsibility, properly understood, means directing spending towards real resources that are available to be used, not imposing arbitrary limits borrowed from a theory of money that has never accurately described how a sovereign currency-issuing government operates.

Where I part from some of the theory's advocates

I should be honest that my acceptance of modern monetary theory as an accurate description of how money works does not extend to every policy conclusion that some of its proponents draw from it. The clearest example concerns the job guarantee, a proposal associated with several of the theory's American originators, under which the state would offer a publicly funded job at a fixed wage to anyone willing and able to work, acting as an employer of last resort and, in the process, anchoring prices and eliminating involuntary unemployment.

I do not accept that the job guarantee is a necessary or even a particularly good implication of modern monetary theory, and I have said so publicly, including in direct exchanges with economists who consider the scheme close to essential to the theory's coherence. My objections are practical as much as theoretical. Maintaining a standing pool of jobs ready to be offered to anyone who might become unemployed at any moment, in any location, requires continuous design and supervision of work that may often never be taken up, and risks becoming a scandalous waste of effort and administrative capacity rather than a source of genuine value.

There is also a real danger that a job guarantee creates a secondary labour market of lower paid, lower status work, distinct from and subordinate to mainstream employment, institutionalising the very inequality it claims to solve. It rests, too, on an assumption I am not prepared to accept, namely that paid employment through the state is the only legitimate route by which people can meet their obligations to society and secure an income, when pensions, social security and other transfers already demonstrate that this is not the case.

My preferred route to full employment is more direct. Government should use fiscal policy to sustain high levels of genuine, permanent employment by investing in public services, infrastructure, the green transition and care, creating real jobs where they are needed rather than administering a standing buffer of last resort work designed to mop up the consequences of failure elsewhere. Full employment should be the product of a well-managed economy, achieved through ambition, not the by-product of a scheme built around the expectation that the economy will continue to leave people behind.

I make this point at some length because I think it matters that modern monetary theory is understood for what it is, a description of monetary operations, rather than being treated as a single policy programme to which every adherent must subscribe in full. Insisting otherwise risks turning a genuinely useful and evidenced account of how our economy works into an ideological test that puts off far more people than it persuades, at a moment when the argument for abandoning the household budget analogy has never been more urgent.

Conclusions

Modern monetary theory tells us that a government like the United Kingdom's is not a household and cannot run out of the currency it issues.

Spending precedes taxation, not the other way round.

Taxation does not fund public services. It manages inflation, redistributes wealth, ratifies the currency and secures democratic accountability.

The national debt is not a burden pressing down on future generations. It is the accumulated savings of pension funds, savers and the financial system itself, provided at the government's discretion rather than out of necessity.

Deficits are not evidence of mismanagement. They are frequently the mirror image of a private sector that wishes to save, and austerity does not eliminate them, it merely shifts them onto households least able to bear the cost.

None of this means resources are limitless. The genuine constraint on what a government can do is real, and it is measured in labour, skills, energy, materials and the ecological capacity of the planet we depend upon, not in the number of pounds sitting in an account. Understood this way, modern monetary theory does not offer a free lunch. It offers something more valuable, an accurate account of where the true limits to ambition lie, so that political choices can be made honestly, rather than dressed up as financial necessities they have never really been.

I hold this position because I think it is true, and because the household budget myth has done immense damage, justifying austerity, underinvestment and the abandonment of people who had every right to expect better from the country they belong to. Once the mechanics of money are properly understood, the question that has dominated British politics for a generation, namely how will we pay for it, dissolves, and a better and more honest question takes its place, which is what kind of country we choose to build with the capacity we already possess.

Reading list

The following pieces from the Funding the Future blog were consulted in the preparation of this article and provide a starting point for readers wanting more detail on any of the arguments set out above.

Post

Date

What it covers

Modern monetary theory: an explanation

18 April 2023

The founding long-form explanation of Murphy's own understanding of MMT, distinguishing it from some MMT founders' claims.

'Modern monetary theory: an explanation' updated

19 April 2023

A revised second edition of the explanation above, with a summary of MMT's core suggestion that government is constrained by real resources, not money.

What is modern monetary theory?

7 September 2024

A full video transcript setting out how spending, taxation and inflation control work under MMT, and Murphy's reservations about the job guarantee.

The truth about Modern Monetary Theory

19 August 2025

Explains MMT as a description rather than a political programme, applicable to any fiat currency country regardless of political persuasion.

Tax does not fund spending

2 March 2026

Sets out the six reasons government taxes, none of which involve funding spending, and links this to social security and democracy.

There are six reasons to tax and none involve funding the government

5 August 2024

An earlier statement of the same six reasons for taxation, with particular emphasis on currency ratification and democratic accountability.

There is no such thing as taxpayers' money

25 July 2025

Argues that the phrase 'taxpayers' money' is a political myth used to justify austerity, since all money is created by government spending.

Glossary entry: sectoral balances

7 January 2026

A technical explanation of the sectoral balances identity developed by Wynne Godley and its implications for austerity and fiscal rules.

The sectoral balances show that the government has very little control over the national debt

15 May 2024

Explains why government deficits are largely determined by the saving decisions of households, businesses and the overseas sector.

Am I an MMT economist?

23 April 2026

Murphy's fullest published defence of his position that the job guarantee is not intrinsic to MMT, written in response to academic critics.

Keynes vs MMT: which economic theory fits our world?

2 September 2025

Contrasts Keynesian and MMT understandings of debt, inflation and the household analogy, and argues MMT better fits a post gold standard economy.

What if the national debt is really the nation's savings?

25 May 2026

Argues that government bonds are savings instruments rather than debt, and that bond vigilantes do not constrain a sovereign currency issuer.

Why do governments issue bonds when they don't need to?

12 August 2024

Explains the historical and present day role of gilts as a savings facility for banks, pension funds and overseas holders of sterling.

Does MMT say we can spend without limit?

5 May 2024

A direct rebuttal of the claim that MMT permits unlimited spending, setting out full employment and environmental limits as the real constraints.

The job guarantee is not an MMT panacea, it's just one policy option

2 April 2026

A detailed reply to a job guarantee advocate, setting out Murphy's practical and ethical objections to treating it as core to MMT.

New glossary entry: the job guarantee

29 March 2026

A glossary style summary of the job guarantee proposal and its administrative and social limitations, from a Funding the Future perspective.

MMT questions

21 December 2025

Answers reader questions on whether MMT requires tax rises to fight inflation and whether it means unlimited spending, with worked examples.

The worst attack on MMT, ever?

11 May 2026

A review of a hostile book on MMT, used as an opportunity to correct common misrepresentations of the theory and its treatment of central bank independence.

Mythbuster: the national debt

12 June 2020

An early and widely shared piece setting out the case that the national debt is properly understood as national cash, savings and bonds rather than debt.

The national debt is not what you think

22 March 2026

A short video explainer arguing that the national debt is the nation's money supply and private sector wealth, not a burden to be repaid.

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