Here we learn the flaws of Modern Monetary Theory. This is, IMO, a radical version of the Keynesian economics that we already have.
Modern Monetary Theory isn't modern at all and has been around a long time. It simply does not work. Here we will see why:
Part 1: Introduction to the Book and a Fair Critique of MMT
The Human Action Podcast opens with host Dr. Bob Murphy introducing his guest, Emanuel, whose new book is titled If You Can Just Print Money, Why Do I Pay Taxes? with the subtitle Modern Monetary Theory Distilled and Debunked in Plain English.
Murphy explains that he first became interested in Emanuel after watching an interview about the book. What caught his attention was not an ideological disagreement with Modern Monetary Theory (MMT), but Emanuel's claim that when leading MMT advocates such as Stephanie Kelton describe how government spending actually works today—such as the U.S. government purchasing a fighter jet—their explanation is factually incorrect.
Murphy notes that MMT proponents frequently insist they are not making ideological arguments or proposing what governments should do. Rather, they claim they are simply describing how the monetary system already functions. That claim has always puzzled him because, in his view, their explanation of something as fundamental as government purchases is mistaken.
Having debated Warren Mosler from an Austrian economics perspective years earlier, Murphy says he has been engaging with MMT for a long time. What has always stood out to him is that MMT's strongest rhetorical claim is that it merely explains how the world works, yet when it comes to explaining the mechanics of government spending, he believes the theory gets the facts wrong.
Murphy also addresses the provocative title of Emanuel's book. Some MMT supporters interpreted the title as suggesting that Emanuel simply did not understand the theory's standard answer to the question, "If governments can print money, why do they need taxes?" Murphy stresses that this interpretation is unfair. He describes the book as carefully researched, thoroughly documented, and highly charitable toward MMT. Rather than attacking straw men or offering simplistic criticism, Emanuel carefully quotes MMT scholars directly and addresses their arguments seriously.
A Careful and Scholarly Examination
Emanuel explains that he never set out to write a book attacking MMT. In fact, his original goal was simply to learn the theory.
As he studied it, however, he gradually concluded that it did not make much sense.
He emphasizes that the book gives MMT every possible benefit of the doubt. Early chapters deliberately ask readers to imagine a world in which MMT's description of monetary operations is correct before examining the implications. Likewise, most of the criticisms presented in the book are not his own inventions. They come from academic economists who have carefully studied MMT and published scholarly critiques.
Many of those critics, he points out, are themselves supporters of larger government. Their objection is not ideological opposition to government spending but rather that MMT provides a poor theoretical foundation for pursuing those policies.
To prepare the book, Emanuel immersed himself in the MMT literature. He read the MMT textbook Macroeconomics, which presents economics through an MMT framework, covering subjects such as unemployment, the Phillips Curve, and broader macroeconomic theory.
He also read the extensive exchanges between MMT proponents and their critics. He studied the original papers, the responses defending MMT, the subsequent rebuttals, and the continuing back-and-forth between both sides. He printed the material, highlighted it, and worked through it carefully in order to produce what he describes as a well-informed critique.
He suggests readers think of his book as an antidote to Stephanie Kelton's work. While some have accused the book of creating straw-man arguments, Emanuel believes those accusations come primarily from people who have not actually read it.
Reactions from MMT Supporters
Soon after publication, Emanuel says he experienced an unexpected backlash from some MMT supporters.
He describes being subjected to personal attacks, insults, and organized attempts to damage the book's reception. Some accused him of absurd associations, while others left one-star Amazon reviews that simply copied and pasted tweets written by other people rather than engaging with the book itself.
Despite the criticism, Emanuel insists the book treats MMT fairly. Throughout the text, he quotes the economists who developed the theory, presents their arguments in their own words, cites their responses to critics, and then presents the counterarguments. Readers can follow the complete intellectual exchange rather than being asked to accept only his interpretation.
Ultimately, he concludes that the reason the book reaches a negative assessment is not because he approached the subject with hostility, but because after examining the evidence, he believes MMT is simply not a good economic theory.
Making Economics Accessible
Although the research is scholarly, Emanuel also wanted the book to be enjoyable to read.
He notes that Stephanie Kelton's work succeeds in making economics accessible and engaging, and he wanted his own book to do the same by including stories, examples, and anecdotes that would make difficult ideas easier to understand.
Simply dismissing Kelton's arguments as nonsense, he argues, would be counterproductive. Doing so reinforces the belief among many MMT supporters that they have uncovered a hidden truth which mainstream economists refuse to acknowledge for ideological reasons.
Instead, Emanuel believes the best response is to engage MMT directly, present its arguments accurately, and then evaluate them carefully on their own merits.
Part 3: Core Flaws in Modern Monetary Theory
One of the central disagreements between Modern Monetary Theory (MMT) and mainstream economics is not whether governments can create money. Economists have understood for generations that a government with its own currency can finance spending through money creation. The real disagreement concerns the consequences of doing so and the conditions under which it can occur without creating inflation.
Traditional economic thinking views government spending as ultimately requiring society to bear a cost. Governments may finance expenditures through taxation, borrowing, or money creation, but each method carries consequences. Taxes reduce current private purchasing power. Borrowing shifts the burden into the future. Creating money allows governments to acquire real resources immediately, but if carried too far it reduces the purchasing power of the currency through inflation. In every case, government spending represents a transfer of real resources from the private sector.
MMT presents this process differently. Rather than emphasizing financial constraints, it argues that inflation is the only meaningful limit on government spending. If unused resources exist within the economy, governments can create money to mobilize those resources without causing rising prices. Taxes become a tool for controlling inflation rather than financing expenditures.
Critics argue that while this description changes the sequence of events, it does not fundamentally change the economics. If government spending expands beyond the economy's productive capacity, inflation still follows. The difference lies largely in presentation rather than substance.
Another criticism concerns the scope of MMT's proposed changes. If the theory simply acknowledged that governments can temporarily use monetary expansion during recessions, it would closely resemble conventional Keynesian economics. What distinguishes MMT is its claim that governments possess a much larger and more permanent capacity to expand spending than mainstream economists believe.
Supporters of MMT argue that modern economies operate with a persistent output gap—a large pool of idle labor and unused productive resources that private markets fail to employ. According to this view, the economy consistently operates well below its true potential except during extraordinary periods such as wartime mobilization. Because these unused resources supposedly exist on a permanent basis, governments can continually create money to put them to work without generating inflation.
Mainstream economists reject this diagnosis. While they acknowledge that recessions temporarily create unused capacity, they argue that market forces generally move economies back toward full utilization over time. Idle resources become less expensive, encouraging businesses and consumers to employ them. Monetary expansion may help shorten recessions, but it cannot permanently increase real output beyond the economy's productive limits.
This distinction is crucial because it defines the practical difference between MMT and standard macroeconomics. If idle capacity exists only temporarily, government stimulus is an emergency tool. If large amounts of unused capacity exist permanently, continuous government spending financed through money creation becomes a permanent policy.
Critics argue that MMT relies on the latter assumption while offering explanations that fail to account for how sustained monetary expansion avoids inflation. They contend that MMT frequently attributes inflation to factors other than excess money creation, suggesting instead that new money will simply be saved, absorbed by financial institutions, or directed toward previously unused resources. These explanations, critics argue, lack convincing theoretical and empirical support.
The debate also extends to major public spending proposals. MMT advocates have argued that programs such as the Green New Deal should be evaluated in terms of available resources rather than financial cost. If the necessary labor, materials, and productive capacity exist, governments can create the money required to mobilize them.
Critics contend that this resource-based analysis often proves surprisingly superficial. Instead of carefully examining the availability of physical inputs, skilled labor, industrial capacity, or supply chains, estimates frequently substitute financial expenditures as a proxy for resources. Savings generated by other policy changes, such as healthcare reform or reductions in military spending, are treated as though they automatically free the resources required for unrelated projects.
Additional assumptions further weaken the analysis. Some proposals suggest that investments such as free college education effectively "pay for themselves" by increasing productivity, thereby offsetting their own resource costs. Critics argue that these conclusions often rely on optimistic assumptions rather than rigorous economic modeling.
From this perspective, the concern is not simply whether governments can create money, but whether elected officials can accurately determine the economy's available productive capacity and resist political incentives to overestimate it. If policymakers consistently underestimate inflationary pressures or overestimate idle resources, the resulting monetary expansion could generate persistent inflation rather than sustained economic growth.
Government Spending and the Treasury's Bank Account
One of the most disputed claims within MMT concerns the mechanics of government spending itself.
Stephanie Kelton argues that when Congress authorizes spending, the U.S. Treasury instructs the Federal Reserve to credit the bank account of the recipient. According to this description, the government does not first need to obtain money through taxation or borrowing. Congress simply authorizes the expenditure, and the Federal Reserve creates the necessary dollars by marking up bank accounts.
Critics argue that this description omits an essential part of the transaction.
Before the Treasury can make payments, it must possess sufficient funds in its Treasury General Account. When money is transferred to a contractor or other recipient, the recipient's bank account increases, but the Treasury's account decreases by the same amount. The transaction is therefore a transfer of existing funds rather than the creation of entirely new money.
This process resembles an ordinary bank transfer. When one individual sends money to another, the recipient's balance rises while the sender's balance falls. Describing only the credit while ignoring the corresponding debit creates the impression that new money has been created when, in reality, ownership of existing money has simply changed.
Under current U.S. law, the Treasury is prohibited from running an overdraft in its account at the Federal Reserve. It must replenish its balance through tax revenues or borrowing before additional spending can occur. For this reason, critics argue that the claim that government spending itself automatically creates new money is factually incorrect.
Supporters of MMT have responded by arguing that these legal restrictions are ultimately self-imposed and could be changed through legislation. Critics acknowledge that governments could alter these institutional rules but maintain that this does not justify describing the existing system as though those changes had already occurred.
The distinction matters because MMT frequently presents its framework as merely describing how modern monetary systems already function rather than proposing institutional reforms. Critics argue that this portrayal encourages the public to believe governments already possess unrestricted spending authority, when current legal and operational procedures continue to require the Treasury to finance expenditures before payments are made.
Inflation and the Permanent Output Gap
Critics also identify an empirical challenge facing MMT.
If the economy truly operates with a massive permanent output gap, then sustained government spending should rarely generate inflation. Prices should remain largely stable because abundant unused resources would continuously absorb new demand.
Yet advanced economies have experienced persistent positive inflation for decades, even during periods when MMT claims substantial idle capacity remained available.
This creates a tension within the theory. If inflation only emerges after full productive capacity has been reached, then the long history of moderate inflation appears inconsistent with claims that economies have remained dramatically below capacity for decades.
Some MMT writers respond by arguing that official inflation measures overstate true inflation because product quality continually improves or because changes in service prices reflect structural factors rather than general monetary inflation.
Critics argue that these explanations fail to resolve the broader inconsistency. If economies have always possessed large amounts of permanently unused productive capacity, the sustained inflation observed throughout recent decades becomes difficult to reconcile with MMT's own framework.
The Job Guarantee Proposal
Perhaps the most distinctive policy associated with MMT is the Job Guarantee.
Under this proposal, the federal government would permanently offer employment to anyone willing to work at a fixed wage with basic benefits. During recessions, more workers would enter the program. As private employment recovered, workers would gradually transition back into the private sector.
Supporters argue that the Job Guarantee would eliminate involuntary unemployment while preserving workers' skills and attachment to the labor force. Rather than remaining unemployed for years, individuals would continue working, making them more attractive to future employers.
Critics raise several objections.
First, if government jobs compete directly with private employment by offering wages and benefits comparable to entry-level private work, employers may be forced to raise wages in order to attract workers. This could contribute to wage inflation and eventually broader price inflation.
Second, the practical implementation presents significant difficulties. Because enrollment would fluctuate with the business cycle, governments would need to continually create and eliminate jobs. Critics argue that meaningful long-term work requiring specialized training or continuity cannot easily function within such a flexible system. As a result, available jobs would likely consist primarily of low-skill tasks with limited long-term value.
Third, critics question whether participation in such a program would actually improve workers' future employment prospects. If employers come to view Job Guarantee positions as politically created or minimally demanding, time spent in the program may provide little positive signal about a worker's productivity.
Historical examples have also been debated. Some MMT proponents cite Argentina's employment programs following the country's economic crisis as evidence supporting the concept. Critics counter that these programs differed substantially from the proposed Job Guarantee, often limiting participation, providing very low wages, and in many cases paying benefits without meaningful work being performed. They argue that these experiences offer little evidence that a permanent nationwide Job Guarantee would function as envisioned.
Ultimately, critics contend that while the Job Guarantee represents one of MMT's most concrete policy proposals, significant questions remain regarding inflation, administration, labor market incentives, and long-term effectiveness.
Last edited by MoneyMan
