We need to talk about Richard Murphy

Richard Murphy is a chartered accountant who has forged an impressive career campaigning for tax reform. He works tirelessly writing punchy blog posts and detailed policy reports. His basic point - that wealthy individuals and deliberately opaque companies find it too easy to evade and avoid HMRC - is surely correct.

I am not a socialist so I am uncomfortable with Murphy's implication that tax is good for its own sake. And I recognise that many experts have cast significant doubt on the validity of his calculations (to which Murphy has responded). Murphy is paid by trade unions, and he's good at what he does. I disagree with his political beliefs, but people like him are important voices in public debate.

I tend to defer to Murphy's judgment when it comes to accounting. But recently he has emerged as an economic commentator. As the self-styled originator of the concept of "People's Quantitative Easing" (PQE), and having been said to have influenced Jeremy Corbyn's economic platform, Murphy's profile has risen significantly. This concerns me greatly. I believe that PQE is economically illiterate and potentially very dangerous.*

I am an academic economist that specialises in monetary theory. I have no political loyalties and am generally sympathetic towards Jeremy Corbyn's character and motivations. But we need a reasoned debate about PQE, and one would think that the person claiming credit for creating it would be involved.

This article is not intended to provide a critique of PQE (although I've tried to explain my general opposition in the footnote). My issue now is Richard Murphy's hostility to open debate.

I was interested to watch Murphy's recent interview with Andrew Neil on the Daily Politics (permanent link):

In it, he makes the case for "modest amounts of inflation" and rests it on the fact that Mark Carney is currently failing to meet his 2% inflation target. (Note that Murphy is incorrect to say that Carney's inflation target is 2%. Inflation is not supposed to always be on target, but to meet that target "within a reasonable time period". Therefore technically Carney should be judged based on whether he is keeping inflation expectations at 2%, not on last months actual data. This seems like a pedantic distinction, and I'm sure I've glossed over the difference myself at times. But it's something that a supposed economic advisor should know).

This presents an interesting issue, because for much of 2011 inflation was well above 2%. 

Many economic commentators at the time were saying that this inflation was temporary, and driven by supply side factors. In such circumstances, tolerating inflation is a better option than the Bank of England raising interest rates to slow down the economy. In such circumstances the fact that real GDP growth was low may be more important than inflation being high. So I understand that there is a case for the Bank of England to increase QE (i.e. boost aggregate demand) in 2011.

Let me emphasise that the concern about PQE is that it would be used excessively, and in doing so would contribute to inflation. The whole issue is whether we can trust that PQE will not be abused. Murphy attempts to downplay this fear by claiming that he wants "modest" PQE, and that it's a good idea because inflation is under target. But if Murphy's reasons for advocating PQE circa 2015 are sincere, this implies that he did not think there was a case for PQE in 2011. My recollection is that he has been advocating PQE throughout this time period, even when inflation was above target. So this is a question I posed to him, on his blog, and our subsequent exchange:

Given that he's previously blocked me on Twitter, and deleted my comments, I am not surprised by how that exchange concluded. I am frustrated, because I believe that there's an inconsistency in his argument and he's unwilling to clarify it. And indeed he's even unwilling to permit a courteous discussion between commentators. For example "Bob" left the following reply to my comment:

But my response to that was deleted (here is a screenshot before it was deleted):

Maybe Bob was right. I was keen to hear his response.

So I am frustrated. But I am also annoyed because this is a serious issue and Murphy has a responsibility to engage with the economics community. Whilst he was a blogging accountant it was ok to disparage the whole of the economics profession as being deluded ideologues. As a heterodox economist myself, and critical of the neoclassical orthodoxy, I sympathised with him! But if he wants the attention that comes with being Corbyn's economic "guru" and the respect that comes with being an "academic" he needs to be intellectually mature.

This isn't about abuse or even civility. It's simply a refusal to engage in debate, and an attempt to shut down questions that are perceived to be challenging. Most of the economists I know would dismiss the likes of Richard Murphy as being self-evidently wrong. But when those of us who do try to engage with the sustance of the ideas get insulted, blocked and deleted, it is a real shame.



* One of the few things that macroeconomists actually agree on is that hyperinflation is the result of excessive money creation. This is as close to an empirical fact that macroeconomics can deliver - see David Romer's standard textbook, "Advanced Macroeconomics":

And we have a very strong understanding of the reasons why money creation can become excessive - when governments resort to the printing press to cover their fiscal ill-discipline. The catrostrophic monetary events of modern times (whether it's Weimar Germany, Yugoslavia, or Mugabe's Zimbabwe) happen when people become blase about the link between public spending and the money supply.

Back in 1997, when New Labour were keen to build their economic credibility, Gordon Brown made the Bank of England operationally independent. This was in line with a general trend in the 1980s and 1990s to separate fiscal policy and monetary policy, by outsourcing the latter to the central banks. When quantitative easing (QE) was initiated in 2009, economists like myself were concerned that it would weaken the independance of the Bank of England. In many ways the emergence of PQE as a potential tool is our worst nightmare, and reason enough to have opposed QE in the first place.

If you want more detail on how to understand monetary economics, I have written a textbook that explains it to non economists. Richard Murphy should read it.



NGDP growth in Q1 2015 was 4.3%

The preliminary estimate of Q1 2015 saw a disappointing real GDP growth rate of 0.3%. Whilst todays release of the second estimate hasn't revised it upwards, it has provided some better news. The second estimate provides the first look at NGDP figures, and the Q1 2015 rate is 4.3% (compared to last year). This constitutes a 0.9% rise from the previous quarter (up from 0.7%). This is further evidence that recent deflation is the result of positive supply shocks, rather than negative demand shocks.

Just to recap, this is UK NGDP over the last few years:


The Kaleidic Guide to UK Monetary Policy

For some time now I've been working on a guide to UK monetary policy. It is a 250+ slide powerpoint presentation that attempts to provide insight and commentary on key topics.

It remains a work in progress and I intend to update it annually. It provides an Austrian school perspective on some of the key policy debates of our times, and helps you to make sense of the economic landscape.

In addition to this, if you would like a live version please get in touch.


QE-a culpa

Recently I've been looking through some of the articles I've written about QE over the last few years. I spent much of the post financial crisis period learning about monetary theory and wondered about the extent to which this was reflected in my commentary. I feel that my understanding has increased significantly, and so I should reasses my previous claims.

I published several articles from 2009-2012 and benefitted from a general uncertainty that led to an increase in the demand for economic (and indeed Austrian economic) commentary. Most of the opportunities I had were not a result of my own expertise or reputation, but because I was representing a perspective that people wanted to hear. It has been an interesting intellectual journey to try to provide a mouthpiece for certain ideas, whilst also developing my own voice. 

Firstly, a bit of background and motivation. I've been accused of being too academic, too theoretical. However my primary aim is to prompt debate. It is not to simulate policy. Therefore I’m very resistant to the “don’t just stand there” mentality of a crisis. If I were a policy maker my instinct would probably be closer to action. As an academic my instinct is more contemplative. I have a natural tendency to think of longer term and unseen effects, and even if these are outweighed by the short term necessity for action, I still feel I’m doing an important public duty by pointing them out. If my audience were policymakers my message may well be different. But I consider my primary audience to be the educated layperson, and therefore my primary goal to provide a perspective that they may not already possess.

As I said in 2010,

my objective isn't to impress you by how clever I am. It's to participate in a conversation about economic theory and practice that all sides can learn something from. Therefore I don't see why I need to have provide[d] an alternative plan before jumping into the debate - if I convince you that fiscal stimuli very rarely achieve their objectives, you'll need to decide for yourself what the implications are. This reminds me of students that want "an answer". I'm sorry, but that's not my job. It's to provide new information that allows you to provide your own answers. I'm not trying to convince people that my "worldview" is correct, and that you should share it. I'm merely offering fragments of wisdom to allow you to cultivate your own.

I've read through all of the articles I've cited below, and picked out the money quotes. I've then categorised them and reflected on whether I stand by them (and whether I stand by them but for different reasons). You'll have to take my word that I've surveyed them honestly, and haven't simply ignored quotes that make me look bad. 


I moved back to the UK to write up my PhD dissertation in 2006. My research focus at the time was the spread of the flat tax in Eastern Europe, but it seemed clear to me that there was an impending resurgance of Austrian business cycle theory. I've written elsewhere about whether Austrians predicted the financial crisis, and that's a hard question to answer. But it seemed clear that we were experiencing a central bank induced credit bubble and that a recession was on the horizon. And yet policymakers didn't seem concerned. With Toby Baxendale I began work trying to find an Austrian measure of the money supply. By 2008 it seemed obvious that a monetary boom had preceded a monetary contraction. But at the time, official measures hadn't revealed it.

I used the three charts below in a presentation on 8th November 2008. Broad money didn't show any problems:

Narrow money didn't show any problems:

And then there was the "Austrian" measure:

Given that the method of constructing the UK Austrian Money Supply has changed since then I was right to not draw too much emphasis to the warning signs at the time. But it signalled to me that us Austrians had something important to say and my confidence rose. Then, in January 2010, the Bank of England switched its conventional measure of broad money from M4 to M4ex, which stole a lot of my thunder:

Suddenly the value of the Austrian school switched from accurate forewarnings to the policy debate. In terms of QE, I think there's a narrow debate and a broad debate. The narrow debate is about whether QE will achieve it's stated aims and if this is broadly desirable given the current monetary regime. The broader debate is whether this "success" comes at the expense of unintended consequences (which may possibly be greater). Both of these debates rest on a firm understanding of what QE is, and how it differs from "conventional" monetary policy. Whe QE was first touted I had zero knowledge of the Japanese experiment. I'm happy with my contribution to clarifying what QE was, but perhaps focused too much on the broad, as opposed to narrow debate. Over time, this may be vindicated, because those broader concerns may becoming increasingly relevent. But in 2009 I was behind the curve in being able to make insightful commentary on that narrow debate.

Here are some of the key points I was trying to make:

1. QE is "merely" OMO

From the get go I was uneasy with the distinction between conventional monetary policy (cutting interest rates) and unconventional monetary policy (printing money to buy bonds - i.e. QE). Since QE is conducted via open market operations (OMO) it is more of a tweak to conventional monetary policy (i.e. targeting a quantity of reserves, rather than price/interest rate) than a replacement. In January 2009 Alistair Darling said,

  • “We are looking at a range of measures to support the economy, to support business and to help people. But nobody is talking about printing money.

 I don't think politicians should be allowed to deny that QE involves printing money and that central banks are routinely printing money. My response,


  • "QE isn't a different policy tool, it's an alternative way of using current policy. Whereas OMO means targeting a particular interest rate (and altering the money supply to hit it) QE means targeting a particular quantity of money (and ignoring the interest rate)" [see here]


As I put it in my 2009 Comment is Free article,

  • “1) QE is printing money; and 2) the printing press is already turned on.” [1]

In March 2009 I criticised a Financial Times video that attempted to explain QE because it:

  • “propogates the myth that this is fundamentally new policy - as if the Bank of England is only now being "inflationary", and "printing money".” [see here]

Tim Congdon has also made the point that QE is standard monetary policy for the situation we were in 

  • “He [Tim Congdon] challenges Gordon Brown's portrayal of his own role in the financial crisis, arguing that instead of the response being his ‘brainchild’ the then Prime Minister required a layman's briefing and did not grasp the orthodoxy of the policy for situations when nominal income is falling” [5]

Verdict: I stand by this. In fact, I think this is a strength of QE and should be why QE becomes even more conventional.


2. QE is one arm of the state financing the other

Stephanie Flanders confirmed that "printing money" is technically accurate, but defended QE:

  • “we can expect the Bank to buy a lot of gilts as part of this policy. Is that "printing money"? The politicians will say no. But any economist would say yes...
  • ... "When the Bank of England buys up gilts, one arm of the government is buying up debt owed by another arm of the government in exchange for money created by the central bank. Whether the gilt is brand new, or issued the day before, is quite simply irrelevant.”

I made this "two arms" debate in a 2009 article:

  • “despite the obfuscatory terminology, QE is nothing new. It is simply an exotic label for a discredited policy – one arm of government buying up the debt of another” [1]

Perhaps this was OTT. According to Flanders,

  • “That said, there are big practical differences between this policy and Zimbabwe-style money financing. The most important is that the Bank is choosing to buy gilts as a means to an end. It is not being forced to buy them because the government has nowhere else to go. –Also - and crucially - the Bank has every intention of unmonetizing the debt when the storm is past”

I was dismissive of the argument that QE isn't "printing money", and expressed concerns about public finance. I felt that Flanders' point rested on semantics and intentions, and the public finance considerations shouldn't be dismissed so easily

  • “Yes, the Bank of England is purchasing assets on the secondary market (not directly from the Treasury). Yes, the Bank has every intention to mop up this additional liquidity once the economy recovers, but "directness" and "intentions" are largely semantic.” [1]
  • “the Bank of England buying assets on the secondary market is essentially a gradation of the policy that Mugabe’s government has unleashed in Zimbabwe. One arm of government is buying up the debt of the other. We can pretend that those two arms are separate, but that illusion is becoming harder to maintain by the day.” [4]

And indeed the Bank of England has now became a major player in the UK debt market (from a Kaleidic post):

Verdict: I am glad I pointed out tangible downsides, but the jury is still out on the impact.


3. There is a risk of inflation

This is something many anti-QE commentators referred to, and we were wrong. We've not seen inflation anywhere near the scale we warned about. I said,

  • “The biggest danger of QE – one that no economist would deny – is the destructive inflation that it unleashes. We are asked to have confidence that our monetary authorities have both the omniscience to know when inflation will shoot upwards, and the benevolence to act in the public interest when this occurs” [1]

I then attempted to provide some evidence for this claim:

  • In February 2009 food price inflation rose to 9%, and factory gate inflation is at 3.1%, which might mitigate fears over deflation. We are in for another bout of inflation; another bubble is brewing. The party isn't over” [1]

The chart above shows CPI from 2004-2014 and in Feb 2009 I was warning about inflation. As you can see, it promply falls to around 1%. However, QE starts March 2009 - February 2010 which is the period in which CPI is in a trough. The consequence is that in 2010-2011 we see inflation rise to over 5%. So I could say "there's the inflation", and QE advocates could respond "it's hardly Zimbabwe!"

Indeed already by February 2010 I was saying:

  • "the inflation risk appears to be lower than first feared. Inflation expectations are contained, and yields remain low. Whether this can be maintained is another matter. The decision to cease QE indicates a concern that the inflation tiger is about to bite. Today's figures show a sharp rise, and we should not ignore the possibility that UK gilts are merely a new bubble." [3]

 And then in November 2010,

  • “monetarists are right to mock scaremongering about hyperinflation… CPI is above target (3.1%), but not to the extent that I (and others) feared… [But] We should also remember that inflation could manifest itself in asset price bubbles, for example in the gilt market or emerging markets” [4]

That said, I think I was successful at avoiding the claim that QE is a sign of loose monetary policy. Indeed:

  • “those who believe that low interest rates and a fast growing monetary base imply expansionary monetary policy make the same mistake that economists made during the Great Depression. Then, as now, they were actually signs of an inept central bank failing to offset a fall in the broader money supply.” [4]

Verdict: I was wrong, but shifting the argument slightly reveals the kernal of truth.


4. QE is hair of the dog monetary policy and generates malinvestment

If loose monetary policy caused the crisis how can loose monetary policy get us out? The hair of the dog argument is a convenient one to make, as I did in 2009:

  • “the Bank's solution is a larger dose of what caused the original disease.” [1]
  • “We are now seeing the inevitable hangover and are faced with choice – either to go through the painful but necessary recovery (a hangover) or simply to prolong the intoxication… QE is more hair of the dog.” [1]

This leads to a related idea that a liquidation is a necessary consequence of a boom. Once you accept an Austrian style boom then a recession is an inevitable and necessary consequence. In this 2009 article for Comment is Free article I reeled off some standard arguments:

  • “Over the last few years we have seen an unsustainable boom that has been financed through impoverishment. During this boom scarce capital has been squandered. Rather than use credit as a foundation for wealth-creation, it was erroneously treated as actual wealth, and consumed” [2]
  • “a decline in output is an important step towards production that more closely matches consumer demand. If GDP growth has been driven by bubble activity, a fall in GDP is therefore an inevitable and necessary stage of recovery.” [2]
  • “Genuine economic growth will only return if relative prices can adjust, malinvestment gets liquidated, and a correction is allowed to occur.” [2]
  • “the recession itself is a sign that markets are adjusting, and that entrepreneurs are engaging in the recalculation that is required to understand which plans were unprofitable and where capital should be reallocated. Allowing relative prices to adjust as quickly as possible, reducing labour market rigidities, and improving labour mobility will all help with this" [4]

Verdict: If the inflation argument is over simplified monetarism, then this is over simplified Austrianism. I totally neglected the distinction between a primary and secondary recession and ignored the possibility that such declines in output were unnecessary. 

However, by 2010 I was making a more distinct monetary equilibrium argument:

  • “There is a plausible free market argument to say that under certain institutional conditions (such as competitive banks and no moral hazard), increases in the money supply to offset changes in the demand for money would avoid adjustments having to take place through the notoriously ‘sticky’ real economy. In the same way that inflation creates real effects, so does a monetary deflation, and these effects are neither desirable nor necessary.” [4]
  • "A further argument that Austrian's might be interested in, is the distinction between an expansion in the money supply to offset an increase in the demand for money, and an expansion in the money supply as a means to stimulate aggregate demand." [see here].

 And in an IEA article published in March 2011 I was a lot clearer:

  • “Austrian economists are happy to acknowledge that under certain theoretical conditions QE can work as Congdon suggests – when the demand for money rises a corresponding increase in the supply can restore monetary equilibrium without forcing an adjustment to take place through prices and output” [5]
  • “the best hope for monetary policy was that it prevented the ‘primary recession’ caused by the bubble unwinding turning into a "secondary recession" that sucked in the whole economy.” [5]
  • just as the monetarist view is too rosy, the Rothbardian view is too pessimistic.” [5]

Verdict (2): I got there in the end


5. Unintended consequences of setting a precedent

In February 2010 I published a Guardian article that softened my critique of QE: 

  • “To judge whether it worked depends on what would have happened without QE, and economists typically lack the toolkit to engage in rigorous counterfactual analysis.” [3]
  • “Even if we understood better how the economy would look without the actual policy responses, determining whether they "worked" implies we understand the intentions of the primary decision-makers. Only then would we know if the actual outcomes match the intended consequences” [3]

 Part of the problem with QE is that it reuqires an exit strategy, and we entered it without having a clear one:

  • “The excess liquidity that QE creates will find its way into the real economy at some point – possibly after the economy has already begun to recover naturally – and this is why having an exit strategy is so important. Again, the more confidence markets have in the efficacy of such a strategy, the harder it is for QE to ‘work’, but doubts remain as to whether this can be navigated. Some argue that it’s simple to hike up interest paid on reserves, or possibly even confiscate such reserves when banks begin lending again. However, this overestimates the Bank of England’s ability to anticipate events.” [4]

 I also relegated the threat of inflation as a consideration but pointed out the following:

  • "the rules of the game have changed. The conditions under which QE would be rehabilitated aren't clear." [3]

A key issue is the danger it becomes semi-permanent. In a Management Today article, published January 2012:

  • 'The Bank of England’s policy rate has been historically low for some time now and this cannot continue indefinitely. The aim of low interest rates is to boost the economy by creating incentives to borrow money and invest. But higher capital requirements and policy uncertainty create counter forces that restrict bank lending. [7]
  • 'In these circumstances the purported "benefits" of low interest rates fail to materialise, but the costs certainly do. These include the lack of an incentive to save (and actually rebuild banks' balance sheets through voluntary lending), distortions to the capital structure of the economy (making white elephants like the HS2 line appear profitable) and the erosion of people's savings. [7]
  • 'The fact that real interest rates (the difference between inflation and the return you get on your savings accounts) is negative is a harmful confiscation of wealth. [7]
  • 'When interest rates are close to zero policymakers look to alternatives, and quantitative easing has emerged as their favoured tool. However grateful banks and the financial community are in general to have an injection of freshly-printed money, it’s not clear how much this is helping the real economy. The aim shouldn’t be to preserve the status quo, but to find ways to allow banks to fail without exposing the general public to the fall-out.' [7]

In November 2010 I said:

  • “the use of QE to boost aggregate demand (rather than prevent a liquidity meltdown) is a precedent” [see here]
  • “there can be a fine line between “stabilising MV (money supply multiplied by velocity)” and “boosting AD (aggregate demand)” [6]

Verdict: QE needs to be reformed and there's a real danger that it simply becomes another source of stimulus.


6. Back door bailouts

I try not to engage in banker bashing, but was unable to resist the temptation:

  • "banks have benefited. QE served as a bailout by the back door. By enlarging the scope of assets it buys, and printing money to fund them, this creates (alas perhaps literally) a get-out-of-jail-free card for profligate bankers." [3]
  • “Whilst many businesses have benefited from being able to issue more commercial paper (as the second Giles video points out), the main beneficiaries have been the banks. For very good reasons the Bank of England is not supposed to directly finance UK government debt. This is the cause of most hyperinflations, and is "one arm of the state directly financing another". But they are able to buy them on the secondary market. This makes a massive arbitrage opportunity for banks that buy up gilts and sell them on to the Bank” (see here)

Verdict: A bit crass.

What I should have done is emphasised the importance of liquidations in market corrections and the role of central banks at ditinguishing between liquidity and solvency crises. In 2010 I tried to make this point, arguing that a downside of QE is that it masks solvency problems:

  • "The original reason for having a lender of last resort was to provide emergency liquidity during a bank ‘panic’ and to help unwind unsound banks so that they wouldn’t pose a systemic risk. As time has passed since the first round of QE1 we have realised that it wasn’t merely a short-term liquidity problem, but a fundamental one of solvency. This cannot be cured with a quick gush from the monetary spigot, and direct bailouts merely obscure the distinction between liquidity and solvency problems further.” [4]

Perhaps this is too simplistic because they way in which QE is conducted can determine whether it's providing a Bagehot style penalty or a back door bailout. In March 2011 I said

  • "In a world where central banks exist, this is the mechanism by which we distinguish between the temporary illiquid to the fundamentally insolvent. And unlike QE it avoids a slew of unfavourable side effects, such as expanding the scope of the Bank of England (by redefining the types of assets and types of institutions they deal with); expanding their discretionary powers; generating regime uncertainty; increasing the upside risk of inflation; and placing epistemic burdens on policymakers that there is no hope they can shoulder.” [5]
  • “why can't the Bank of England simply fulfil its traditional role as being lender of last resort” [5]

Back then, I felt that the Bank of England should use discount window. Now, I believe QE could be used in a way that is better than a discount window.



In November 2010 I wrote a think piece for the Adam Smith Institute, and stand by the main argument:

  • “Policies like QE increase regime uncertainty and generate systemic instability. They have the potential to make matters worse, and ignore the fact that you cannot buy confidence. The Bank for International Settlements – one of the few organisations that foresaw large elements of the financial crisis – warns about the upside risk of continued low interest rates. Systemic misallocation of capital (including human capital) remains. Excessive risk-taking remains. Over-leveraged balance sheets remain. Volatile capital flows remain.”  [4]

However I argued that QE had run it's course

  • “There is an alternative to more QE.” [4]

Now, I believe that I should have explained what it is good for, and clarified what those alternatives are. The justification for QE was to prevent a collapse in commercial banks balance sheets and reduction in broad money growth. But the main reason for this problem was an exogenous policy shock, namely an increase in capital requirements.

 So, mea culpa:

  • I didn’t have a good grasp at to what was happening to the money supply at the time - broad money growth data was flawed
  • I was treating the ceteris as paribus, believing that if the problem was regulatory intervention the solution is to remove that intervention, rather than introduce new ones
  • Quibbling about how QE was conducted (and not having a clear alternative) was less important than generating liquidity
  • I placed too much weight on the long term, unintended consequences of QE

Then, my main policy sympathy would have been to implement Bagehot through discount window and keep provision of market liquidity separate

Now, however, I think that the problem was OMO being too narrow. If you have a “small number of counterparties” and a “small subset of “good” securities”, then a ““Bagehotian” case can still be made for occasional direct Fed lending”. However if OMO function well or are reformed (i.e. diversify the participants and diversify the assets) then that’s how Bagehot should be implemented. (See this George Selgin article for more).

I maintain that hair of the dog isn't effective monetary policy, and so the central bank should not be there handing out shots. But they do have a role in easing the hangover by handing out water. And given that they won't always know where it's needed, soak the market with liquidity and see where it goes.

Here's how I'd summarise the debate:


  1. The semantics of printing money” The Guardian, March 2009 
  2. The unpalatable financial truth” The Guardian, March 2009 
  3. Has quantitative easing paid off?” The Guardian, February 2010
  4. The Threat of QE2”, Adam Smith Institute, November 2010
  5. Monetarists’ blind spot on quantitative easing” Institute of Economic Affairs, March 2011
  6. Forward thinking”, Money Marketing, May 2011
  7. "To QE Or Not To QE? The Market Has Spoken” Management Today, January 2012



Estimating the Productivity Norm Price Level for the UK

In George Selgin's classic book "Less than Zero" he advocates the concept of the "productivity norm". He argues that:

"the price level should be allowed to vary to reflect changes in goods' unit costs of production"(p.10)

A productivity norm exists when adjustments in the general price level follows the rule above, and has the following implications:

  • Changes in velocity would be offset by changes in the money supply such that nominal income is unchanged
  • Changes in productivity would be reflected by changes in the price level such that nominal income remains unchanged

Here is the chart from the book, showing the Actual and Productivity Norm Price Levels from 1948-1976:

There are several problems with attempting to replicate this for the UK. It may be that these problems are insurmountable, and it may be that my attempts to deal with those problems have created new ones. Still, this is a work in progress and I am looking for feedback.

The first issue is that the productivity norm rests on Total Factor Productivity. The best source of estimates for this come from the following ONS release:

These are only annual figures up to 2012 and supposed to be treated with caution. Given that I'm not careful with data anyway, I thought I'd use it. The chart below shows the results:

The method of calculation was simply:

What this shows is that productivity gains should have generated a benign deflation in 2003-2004, but also that policymakers should have allowed inflation to go higher during the 2008-2009 crisis than they did.

I also wanted to look at more reliable, and quarterly data, and therefore used Labour Productivity (I was bouyed by Scott Sumner's claim that the difference between Labour and TFP isn't all that important). The chart below shows the growth rates from 1997-2014 using the same method as above.

Once again we see several periods where positive inflation appears too hgh, with several points at which a productivity norm inflation rate would have been negative. It then spikes up significantly higher than actual CPI before coming into line more recently. Given that the productivity data is only available quarterly this doesn't incorporate the 0% CPI we have seen this month. Because I suspect this is the most interesting of the charts presented here, this will be the one that we update regularly in our data section.

Finally, my original goal was to do these calculations looking at levels. I used the following method for the first time period:

and this for each subsequent:

Here is the chart:

It is telling us something interesting, but I'm not sure if the narrative is supported strongly enough by the theory and methods employed.