NGDP targeting: Hayek's Rule

One thing I go on about on this blog is how nominal GDP targeting—a market monetarist policy proposal that has even won over a small group of New Keynesians—is also the kind of policy an Austrian should want in the medium term. Of course, in the long term we'd like to abolish the Bank of England altogether, but even then we'd get, with free banking, something like a stable level of nominal GDP, so it's a pretty good target to work towards. The economist Nicholas Cachanosky wrote a paper in the Journal of Stock & Forex Trading about a year ago, which I missed, called "Hayek’s Rule, NGDP Targeting, and the Productivity Norm: Theory and Application" which lays a lot of the Austrian arguments for targeting the level of nominal income in a very clear and cogent fashion. I include some key extracts below:

The term productivity norm is associated with the idea that the price level should be allowed to adjust inversely to changes in productivity. If total factor productivity increases, the price level (P) should be allowed to fall, and if total factor productivity falls, the price level should be allowed to increase. A general increase in productivity affecting the economy at large changes the relative supply of goods and services with respect to money supply. Therefore, the relative price of money (1/P) should be allowed to adjust accordingly. In other words, money supply should react to changes in money demand, not to changes in production efficiency.

The productivity norm was a common stance between monetary economists before the Keynesian revolution. Selgin [14, Ch 7,8] recalls that Edgeworth, Giffen, Haberler, Hawtrey, Koopmans, Laughlin, Lindahl, Marshall, Mises, Myrdal, Newcome, Pierson, Pigou, Robertson, Tausig, Roepke and Wicksell are a few of the economists from different geographical locations and schools of thought who, at some point, viewed the productivity norm positively.

One of the attractive features of productivity norm-inspired monetary policy rules is the tendency of the results to mimic the potential outcome of a free banking system, one defined as a market in money and banking with no central bank and no regulations. Among the conclusions of the free banking literature is that monetary equilibrium yields a stable nominal income.

Throughout Cachanosky distinguishes carefully between an NGDP target and a productivity norm, though I think these are overstated; and between 'emergent' stability in NGDP and 'designed' stability, which he (like Alex Salter) thinks are importantly different (I am not convinced).

Cachanosky believes that the 2008 crisis implies that NGDP growth beforehand was too fast, and led to capital being misallocated, but I still doubt the Austrian theory of the business cycle makes any sense when you have approximately efficient capital markets.

Despite our differences, I think that Cachanosky's papers are very valuable contributions to the debate, and hopefully they can go some of the way to convincing Austrian economists that the market monetarist approach is not Keynesian.

A miracle cure for central bank impotence

Are central banks ever unable to create inflation? The question may seem absurd – why would we ever want them to create more inflation? The typical answer is that deflation can be a lot worse than inflation. But this ignores the fact that prices can fall simply because we can produce things more cheaply. Falling oil prices mean cheaper production, which should mean cheaper consumer products. That's 'good' deflation.

But 'bad' deflation, caused by tight money, can be very harmful, and indeed is what Milton Friedman blamed the Great Depression on. A variant of this view, which looks at market expectations, blames expectations of deflation for the crisis in 2008. Those of us who think that nominal GDP is what matters – since contracts and wages are set in nominal terms – recognise that deflation can knock NGDP off-course and cause widespread bankruptcies and unemployment that would not have taken place in a more stable macroeconomic environment. (Free banking, say.)

So if inflation is sometimes desirable, when it prevents deflation (or collapses in NGDP), the power of the central bank to create it really does matter. That's where Paul Krugman and the Telegraph's Ambrose Evans-Pritchard have clashed. In response to Krugman's claim that central banks are impotent when their interest rates are zero, Evans-Pritchard writes:

Central banks can always create inflation if they try hard enough. As Milton Friedman said, they can print bundles of notes and drop from them helicopters. The modern variant might be a $100,000 electronic transfer into the bank account of every citizen. That would most assuredly create inflation.

I don’t see how Prof Krugman can refute this, though I suspect that he will deftly change the goal posts by stating that this is not monetary policy. To anticipate this counter-attack, let me state in advance that the English language does not belong to him. It is monetary policy. It is certainly not interest rate policy.

The piece is worth reading in full. I'm less convinced that 'helicopter drops' are actually needed now – if central banks said that they'd do as much conventional QE as it took to raise the inflation rate or NGDP level to x%, that may well be enough. But Evans-Pritchard's basic point that central banks are never 'out of ammo' is what counts.

What Robert Peston gets wrong about QE

I don't usually read Robert Peston, now the BBC's economics editor, but I came across this piece he wrote for their website on the end of the ongoing US quantitative easing (QE) programme. Here he makes the case, overall, that even though QE did not cause hyperinflation (yet!) it could still prove 'toxic' because it 'inflates the price of assets beyond what could be justified by the underlying strength of the economy'. Basically every line of the piece includes something that I could dispute, but I will try and focus on the most important issues. The first problem is that Peston takes a hardline 'creditist' view that not only is QE mainly supposed to help the economy through raising debt/lending, but by raising it in specific, centrally-planned areas (e.g. housing). When we find that QE barely affected lending, it seems to Peston that it failed. But QE does not raise lending to raise economic activity—QE raises economic activity through other channels, which may lead to more lending depending on the preferences of firms and households.

In his 2013 paper 'Was there ever a bank lending channel?' Nobel prizewinner Eugene Fama puts paid to this view. He points out that financial firms hold portfolios of real assets based on their preferences and their guesses about the future. QE can only change these preferences and guesses indirectly, by changing nominal or real variables in the economy. For example, extra QE might reduce the chance of a financial collapse, making riskier assets less unattractive. But when central banks buy bonds investors find themselves holding portfolios not exactly in line with their preferences and they 'rebalance' towards holding the balance of assets they want: cash, equities, bonds, gilts and so on. This is predicted by our basic expected-profit-maximising model and reliably seen in the empirical data too. It's good because it implies that monetary policy can work towards neutrality.

This doesn't mean Peston is right to be sceptical about the benefits of QE. QE has worked—according to a recent Bank of England paper buying gilts worth 1% of GDP led to .16% extra real GDP and .3% extra inflation in the UK (2009-2013), with even better results for the USA. The point is that it works through other channels—principally by convincing markets that the central bank is serious about trying to achieve its inflation target or even go above its inflation target when times are particularly hard. This is not an isolated result.

The second issue is that Peston claims QE isn't money creation:

Because what has been really striking about QE is that it was popularly dubbed as money creation, but it hasn't really been that. If it had been proper money creation, with cash going into the pockets of people or the coffers of businesses, it might have sparked serious and substantial increases in economic activity, which would have led to much bigger investment in real productive capital. And in those circumstances, the underlying growth rate of the UK and US economies might have increased meaningfully.

But in today's economy, especially in the UK and Europe, money creation is much more about how much commercial banks lend than how many bonds are bought from investors by central banks. The connection between QE and either the supply of bank credit or the demand for bank credit is tenuous.

That is not to say there is no connection. But the evidence of the UK, for example, is that £375bn of quantitative easing did nothing to stop banks shrinking their balance sheets: banks had a too-powerful incentive to shrink and strengthen themselves after the great crash of 2008; businesses and consumers were too fed up to borrow, even with the stimulus of cheap credit.

This is extremely misleading and confused. He suggests that printing cash and handing it out would boost the 'underlying' growth rate, which is nonsense—the 'underlying' growth rate is driven by supply-side factors. He claims that money creation is identical with credit creation, when they are separate things, and he has already pointed out that creating money doesn't always lead to more credit. We have already seen how credit is not the way QE affects growth, despite what economic journalists like Peston seem to unendingly tell us. Indeed, it seems quite clear that the great recession caused the credit crunch, rather than the other way round.

His ending few paragraphs are yet stranger:

But the fundamental problem with QE is that the money created by central banks leaked out all over the place, and ended up having all sorts of unexpected and unwanted effects. When launched it was billed as a big, bold and imaginative way of restarting the global economy after the 2008 crash. It probably helped prevent the Great Recession being deeper and longer. But by inflating the price of assets beyond what could be justified by the underlying strength of the economy, it may sown the seeds of the next great markets disaster.

It's not clear at all why Peston thinks that QE would inflate asset prices beyond what could be justified. I've written at length about this before. The money a trader gets from selling a gilt to the Bank of England is completely fungible with all their other money. There is no reason to expect they will put this money in an envelope and save it for a special occasion. They try and hold the same portfolio of assets as they did before. Through various channels (including equity prices -> investment) QE raises inflation and real GDP and surprise surprise these are exactly the things that asset prices should care about.

How to fix the Eurozone

It's rare that an economic question is clear cut. Nearly all issues are two sided, with substantial costs and benefits to all approaches. But the reason the Eurozone crisis has resumed is pretty obvious—'bad' disinflation and deflation almost universally across the bloc, and a failure of the European Central Bank to provide even the most basic monetary stability. The solution is equally obvious: meet the inflation target and commit to a level target to prevent future cock-ups. Household, firms and sovereigns take out (nearly all of) their debts in nominal terms, i.e. not adjusted for inflation. They are likely to build in expected inflation. However, if inflation is higher than expected, debtors incomes should rise faster than they expected, while their debt is still fixed, making the burden lighter. Of course, this means creditors receive less than they expected. It's the same on the other side.

If the central bank promises 2% inflation per year over the next ten years, and the markets believe it, then the yield of a gilt that matures in 10 years will take this into account. This goes (approximately) for all other assets in the economy, like mortgages, consumer credit, business loans and so on. If inflation departs from target it enriches one side at the expense of the other, contrary to what they all could have reasonably expected when they signed these contracts.

There is a complication: there is a difference between the inflation and deflation caused by supply shocks and that caused by demand shocks. When prices rise because everything really has become more costly to produce (a supply shock like an OPEC oil price hike) then this makes debts harder to pay, but worth no more. When prices fall because everything has become cheaper to produce (a supply shock like Chinese labour coming onto the world market) this makes debts easier to pay, but worth no less. But central bank expansions and contractions are demand shocks, not supply shocks.

This means that the national debt will be harder to pay if inflation comes in lower than target for monetary reasons. Inflation has been below the European Central Bank's target for nearly two years, and is falling further below it. Twelve countries have either zero inflation or deflation. Unless there were massive supply-side improvements across the Eurozone—which we would see in the form of impressive real GDP growth or productivity improvements—this would usually mean that firms will find it hard to make good on their investments, and governments will find their national debts increasingly hard to manage. This is exactly what we are seeing.

As I said above the weird thing about this situation is we actually have an easy-ish solution. Commit to meeting the inflation target, making up the deficit of the past few years and targeting a level path of inflation (or total income) in the future. That means that if the ECB makes a mistake and 'undershoots' its target, it doesn't allow this to distort the economy but does a little extra inflation in the next few months; if the ECB 'overshoots' it does a little less. This is not baleful central bank 'intervention' or 'disortion'—the distortion was letting the rules of the game depart so far from those they signed all of their contracts expecting.

The alternative is a 'lost quarter century' of stagnation while everyone slowly adjusts to the new monetary arrangements they have been hit with.

Austrian fanatics ruin it for the rest of us

The Adam Smith Institute has long been associated with the Austrian school of economics. There is a picture of Friedrich Hayek on the wall. Our Director, Dr. Eamonn Butler, has written Austrian Economics: A Primer and books on Hayek and Ludwig von Mises. With respect to myself, I am personally friendly with, and/or heavily influenced by Austrian-leaning economists including George Selgin, Anthony J. Evans, Emily Skarbek, Mark Pennington, Kevin Dowd, David Skarbek, Adam Martin and dozens of others. I own about 15 books by Ludwig von Mises. I went to a Man, Economy & State reading group. I am still technically a moderator on the Ludwig von Mises Institute forums. My very first post for this blog was on the Austrian theory of the business cycle.

Smart Austrian economists have done, and still do, lots of important work. I personally think that Israel Kirzner deserves a Nobel prize for his work on entrepreneurship. I don't think Austrians are deserving of the hit pieces that some less pleasant members of the mainstream level against them. But there is a genre of commentary, particularly seen below the fold in economics blog comment sections, whose contentless, nebulous, impossible-to-completely-eradicate nonsense unfairly tars all Austrian-influenced economists.

A recent example was left on Sam's post on NGDP targeting, and many of those in the genre follow a similar pattern. Here I will focus on one issue: the dismissal of Sam's argument as 'Keynesian', because it includes non-Austrian ideas. This is probably the worst and most annoying flaw internet Austrians display. Not all non-Austrian arguments are Keynesian.

There is nothing a Keynesian or New Keynesian or post-Keynesian would recognise as Keynesian in Sam's post: he doesn't talk about natural interest rates*, he doesn't talk about marginal propensities of consumption, he doesn't talk about multipliers, he doesn't advocate fiscal stimulus, he doesn't mention a paradox of thrift or liquidity trap. He uses the equation of exchange, which is about as non-Keynesian as you can get!

And many if not most (macro)economists through history have been neither Austrian nor Keynesian, including prominent figures such as Irving Fisher, Milton Friedman, Robert Lucas, and Ralph Hawtrey. At least two schools of thought are neither Keynesian nor Austrian: New Classical/freshwater macro, and monetarist/Chicago school macro. And these schools don't just differ from Keynesianism, they actively and vigorously oppose it on a host of important issues.

It just doesn't do to call all non-Austrian economists 'Keynesians'. It's inaccurate and it's irritating and it's idiotic. Economists have worried about demand-side or money-demand-caused recessions before Keynes and they've worried about them since without accepting any or all of his solutions.

What's more, there is no reason why being an Austrian economist should preclude one from interest in any of these approaches—something smart Austrian and Austrian-influenced economists like Hayek and Selgin have not shied away from. Hayek warned of the dangers of a 'secondary depression' caused by monetary contraction after the real shock involved in the Austrian theory. Austrian fanatics ruin it for everyone.

*George Selgin points out in the comments that natural interest rate ideas predate Keynes and are important in Austrian theory.

Nominal GDP targeting for dummies

Nominal Gross Domestic Product (GDP) targeting is a type of monetary policy that people like me think would give us a more stable economy than we currently have. It would replace the Bank of England’s current monetary policy, inflation targeting. Nominal GDP can be understood as sum of all spending in the economy. Total spending can increase either because of price rises (inflation) or because there’s more stuff to go around (economic growth). If this year inflation is 2% and we have 2% economic growth, nominal spending (nominal GDP) will have risen by 4%.

The current policy of inflation targeting means that the Bank of England tries to control the money supply so that prices rise, on average, by 2% every year. If prices rise by more or less than this, the Bank is judged to have failed in its job.

Nominal GDP targeting would mean that the Bank of England would stop trying to target price rises, and instead try to target the total amount of nominal spending that takes place in the economy. That means that if economic growth was lower than usual, the Bank would have to try to make inflation higher than usual. If economic growth was higher than usual, inflation would be lower than usual.

This system is appealing because it is often the total amount of spending in the economy that matters, rather than inflation per se. Wages are usually set in nominal terms, which means that they do not automatically adjust upwards and downwards according to inflation.

Because of this, a drop in the amount of spending going on can lead to a mismatch between all the wage demands in the economy and the amount of money available to pay them. In other words, there is not enough money in the economy to pay everyone. This has two possible outcomes: either wages can be cut to meet the new level of spending, or people will have to be fired.

Empirically, it seems as if firms prefer to fire some workers than to cut wages across the board. In fact, firms really hate cutting wages, for some reason, and unemployed people are often reluctant to take the same job that they once had for a lower wage. Economists refer to this phenomenon as “sticky wages”.

So the outcome of a fall in total spending is usually unemployment. This is an example of a nominal change having a real effect, and destroys wealth that need not be destroyed, because the previously-profitable relationship between the worker and the firm has now been undone.

When this happens across the economy it can affect economic growth. In fact, this seems to be a very important factor in recessions – when there is a steady level spending taking place, the market is pretty good at finding new ways of using unemployed workers fairly quickly. When there just isn’t enough spending going on, we have to wait for workers and firms to cut wages enough to hire them again, which can take a long time.

Under nominal GDP targeting, the Bank of England would commit to keep the spending level growing even if economic growth dipped. As I've said, that would mean more inflation in times of slow growth and less inflation in times of quick growth.

Because inflation is being used to offset the changes in economic growth, negative economic ‘shocks’ like oil crises will translate into higher prices, prompting the market to adjust to take account of new realities, but never creating the domino effect of mass unemployment that we sometimes currently experience. The real economy would still adjust to real shifts in supply and demand, but we’d avoid the chaos that unstable monetary environments can create.

The key is that almost all contracts in the modern economy are set in nominal terms. That means that money that is managed in the wrong way can create a lot of unnecessary destruction of wealth. Nominal GDP targeting would probably give us the most neutral monetary system possible with the government, with the monetary environment kept stable so the real economy can do its work in allocating resources.

Money matters. The 2008 crisis happened because expectations of inflation, and hence nominal spending levels, dropped sharply, causing the ‘musical chairs’ problem of too little money to fulfil all the existing contracts and wage demands, which led to widespread bankruptcies and job losses. Today, the UK and the US have begun to get their spending levels growing at a healthy rate again, and their real economies have begun to grow healthily again too.

The Eurozone is the saddest story. The European Central Bank has been obsessed with fighting inflation (possibly because Germany has not suffered much, and Germans have bad memories of hyperinflation during the 1920s), and as a result nominal spending has grown very slowly indeed. The consequences are easy to see: in the weaker European economies, like Greece, Spain and Italy, unemployment is at historically high levels. It seems likely to stay there for many years.

Many people, myself included, believe that a system where private banks could issue their own notes without a central bank at all would be the best system. This is known as ‘free banking’. One of the best arguments for free banking is that it would keep nominal spending levels steady, because banks would issue more notes during periods of slow growth and fewer notes during periods of high growth. This should sound familiar – nominal GDP targeting is probably the closest we can get to ‘stateless’ money while having a central bank.

Nominal GDP targeting would not prevent all recessions or guarantee growth. The real economy is what determines things like that. But badly-managed money can destroy growth, create recessions by itself, and turn small ‘real’ recessions into extremely bad depressions, as happened in the 1930s and 2000s. Nominal GDP targeting would give us stable, neutral money that avoids these things. We would have been better off with it in 2008, and we would be better off with it today.

Central banks cause low interest rates, but not by lowering interest rates

The Bank of England slashed its discount rate ('Bank Rate') to 0.5% in its 5th March 2009 meeting in response to the growing recession, hoping to stimulate demand. Its discount rate is the rate it lends out to commercial banks—and a lower rate is believed to raise economic activity, whether through expectations, extra nominal income or increased lending. It has left it there ever since, and indeed, because of the 'Zero Lower Bound' on interest rates it has turned to other tools to try and bring about an economic recovery—a recovery which is only just setting in properly. When the Bank moves its key policy rate, commentators talk about it hiking or cutting interest rates; on top of this, we've seen extremely low effective interest rates in the marketplace; together this makes it reasonable to believe that the central bank is the cause of these low effective rates.

There are lots of reasons to doubt this claim. In a previous post I pointed out that the spreads between Bank Rate and market rates seem to be narrow and fairly consistent—until they're not. I made the case that markets set rates in an open economy. And I argued that lowering Bank Rate or buying up assets with quantitative easing (QE) may well boost market rates because they raise the expected path of demand, the expected amount of profit opportunities in the future, and thus investment.

Since then I came across an elegant and compelling explanation of exactly why this is. In a 1998 paper, Tore Ellingsen and Ulf Söderström show that this is because some monetary policy changes are purely expected and 'endogenous' responses to economic events, whereas some monetary policy changes are unexpected 'exogenous' changes to the central bank's overall policy framework (like raising or lowering the inflation rate that markets believe they really want).

When changes are expected, market rates keep a tight spread around policy rates; when changes are a surprise, cutting Bank Rate actually results in higher interest rates in the marketplace.

To identify which changes were exogenous (surprises) and which changes were endogenous (expected) Ellingsen and Söderström looked at market commentaries in the Wall Street Journal the day after policy events—where the Fed decided whether to change or maintain its current policy rate. When traders they interviewed were surprised or disappointed by the move (or lack of move), they judged it exogenous—when traders explained the Fed's move in terms of changes in economic data they judged it endogenous.

This neatly explains why raising Bank Rate would not shut off bubbles (as an aside: a recently-published paper finds that tight, not easy money, is more closely associated with bubbles) and house price booms and so on. Cutting Bank Rate would raise market rates if it changed markets' perceptions of what target the Bank of England is working towards (i.e. made them think it wanted higher inflation). Conversely, if the Bank had decided not to look through high supply-driven inflation, and thus surprised markets by running tighter than expected policy, this would have been likely to push rates even lower.

The best way to get rates back to normal territory, thus incentivising firms to economise on investment projects and put cash into only the very best, is to make sure the economy doesn't suffer the effects of what Hayek called a 'secondary depression'. And the best way to ensure that is to implement something we might call a 'Hayek Rule' after the monetary policy he proposed—stabilising MV (the money supply x velocity, equal to aggregate nominal income). Recent work has shown that we get less creative destruction and capital reallocation in slumps as opposed to healthy growth periods.

Firm expectations now mean that setting this at zero, as he proposed, would have a very costly intermediate period while firms reset their plans—setting it at the rate consistent with 2% inflation (roughly 5%) would be more appropriate. Perhaps in the long run it could come down. But without a stable macroeconomic environment, capitalism cannot create the wealth that makes it so widely and dynamically successful.