Posts Tagged ‘Keynes’

Could Central Banks do More during the Crisis?

September 7, 2018 3 comments

I rarely disagree with Martin Sandbu’s Free Lunch. But today’s piece on central banks is one of these cases.

In short, Martin argues that while the main culprit for the slow recovery is fiscal policy, almost everywhere too timid if not outright procyclical (we are all on board on that!), the mistakes of fiscal authorities do not exempt central banks from bearing part of the responsibility. In particular, he dismisses the claim that it was technically impossible to lower long-term interest rates further, and/or bring policy rates even more into negative territory.

I agree with this point. Interest rates could have been lowered further. Nevertheless, I think that this would have made very little difference, because after 2008 central banks were essentially pushing on a string.  This point of disagreement between us can be traced to a different view about what is the liquidity trap.

I recently published a book, La Scienza inutile (a general public account of a century of debates in macroeconomics. For the moment it is in Italian and in French, English translation in progress), in which I discuss the different notions of liquidity trap. Here is the quote (sorry, a bit too long):

 The first source of trouble that Keynes considers is the most extreme, the so-called liquidity trap: `There is the possibility, […] that, after the rate of interest has fallen to a certain level, liquidity-preference may become virtually absolute in the sense that almost everyone prefers cash to holding a debt which yields so low a rate of interest. In this event the monetary authority would have lost effective control over the rate of interest’ (Keynes 1936, p.207). In slightly more technical terms, the interest elasticity of money demand is near-infinite: no matter how much liquidity the central bank injects into the economy, it is entirely hoarded by agents and hence it leaks out of the system in its entirety. Monetary expansion is not effective in lowering interest rates.

There may be different reasons why the economy enters a liquidity trap. Keynes argued, by looking at the great depression, that this usually happens at very low (but not necessarily nil) levels of the interest rate, because in this case agents would expect interest rates to rise in the future and thus would be willing to hold any extra amount of money and postpone the purchase of bonds to the moment when interest rates will be up again. More recently the liquidity trap has been defined as a situation in which the interest rate that equates savings and investment is negative, and therefore cannot be attained by the central bank (the so-called Zero Lower Bound, or ZLB; see e.g. Krugman 2000). This latter definition leaves some room for monetary policy effectiveness: if the central bank manages to trigger the expectation of positive inflation, the real interest rate (the nominal interest rate minus the inflation rate) will become negative and lead to the full employment equilibrium.

So, if we think in terms of ZLB, it exists a real interest rate at which the output gap would be closed. If that interest rate is negative, then it is harder to reach, as central banks need to raise inflation expectations and try to push short term rates as much as possible in negative territory, which requires boldness and creativity (we have seen this). But, once again I agree with Martin on that, this can be done. If instead private expenditure becomes irresponsive to interest rates, the ‘Keynes definition’, then there is little central banks could do. I had noticed, back in 2016, that while it succeeded in easing credit conditions, EMU Quantitative Easing seemed to have done little to boost confidence and expected demand (the ultimate driver of firm’s credit needs). The EMU most recent Bank Lending Survey seems to confirm the prediction of the time. Both chart 4 (enterprises) and chart 12 (households) depict a flat demand for loans, that picks up only when the EMU economic outlook brightens.

This is by no means hard evidence (I am not aware of any papers thoroughly investigating the impact of QE on credit demand). But stylized facts seem to acquit central bankers.




The two works cited in the quote:

Keynes, J. M. (1936). The General Theory of Employment, Interest, and Money. London: McMillan.

Krugman, P. (2000). Thinking About the Liquidity Trap. Journal of the Japanese and International Economies 14(4), 221–237.

A Plea for Semi-Permanent Government Deficits

December 9, 2016 3 comments

Update (1/7/2016): The whole paper is now available on Repec.

I have recently written a text on EMU governance and the implementation of a Golden Rule of public finances. I will provide the link as soon as it comes out. The last section of that paper can be read stand alone (with some editing). A bit long, I warn you, but here it is:

Because of its depth, and of its length, the crisis has triggered an interesting discussion among economists about whether the advanced economies will eventually return to the growth rates they experienced in the second half of the twentieth century.
One view, put forward by Robert Gordon  focuses on supply-side factors. Gordon argues that each successive technological revolution has lower potential impact, and that in this particular moment, “Slower growth in potential output from the supply side, emanating not just from slow productivity growth but from slower population growth and declining labor-force participation, reduces the need for capital formation, and this in turn subtracts from aggregate demand and reinforces the decline in productivity growth.

In a famous speech at the IMF in 2013, later developed in a number of other contributions, Larry Summers revived a term from the 1930s, “secular stagnation”, to describe a dilemma facing advanced economies. Summers develops some of Gordon’s arguments to argue that lower technical progress, slower population growth, the drifting of firms away from debt-financed investment, all contributed to shifting the investment schedule to the left. At the same time, the debt hangover, accumulation of reserves (public and private) induced by financial instability, increasing income inequality (on that, I came first!), tend to push the savings schedule to the right. The resulting natural interest rate is close to zero if not outright negative, thus leading to a structural excess of savings over investment.

Summers argues that most of the factors exerting a downward pressure on the natural interest rate are not cyclical but structural, so that the current situation of excess savings is bound to persist in the medium-to-long run, and the natural interest rate may remain negative even after the current cyclical downturn. The conclusion is not particularly reassuring, as policy makers in the next several years will have to navigate between the Scylla of accepting permanent excess savings and low growth (insufficient to dent unemployment), and the and Charybdis of trying to fight secular stagnation by fuelling bubbles that eliminate excess savings, at the price of increased instability and risks of violent financial crises like the one we recently experienced.

The former IMF chief economist Olivier Blanchard has elaborated on the meaning of Summers’ conjecture for macroeconomic policy. If interest rates will remain at (or close to) zero even once the crisis will be over, monetary policy will continuously face the Scylla and Charybdis. The recent crisis is a good case study of this dilemma, with the two major central banks of the world under fire from some quarters, for opposiite reasons: the Fed for having kept interest rates too low, contributing to the housing bubble  and the ECB for having done too little and too late during the Eurozone crisis.

Drifting away from the Consensus that he contributed to consolidate, Blanchard concludes that exclusive reliance on monetary policy for macroeconomic stabilization should be reassessed. With low interest rates that make debt sustainability a non-issue; with financial markets deregulation that risks yielding more variance in GDP and economic activity; and with monetary policy (almost) constantly at the Zero Lower Bound, fiscal policy should regain a prominent role among the instruments for macroeconomic regulation, beyond the cycle. This is a very important methodological advance.

Nevertheless, in his plea for fiscal policy, Blanchard falls short of a conclusion that naturally stems from his own reading of secular stagnation: If the economy is bound to remain stuck in a semi-permanent situation of excessive savings, and if monetary policy is incapable of reabsorbing the imbalance, then a new role for fiscal policy may appear, that goes beyond the short-term stabilization that Blanchard (and Summers) envision. In fact, there are two ways to avoid that the ex ante excess savings results in a depressed economy: either one runs semi-permanent negative external savings (i.e. a current account surplus), or one runs semi-permanent government negative savings. The first option, the export-led growth model that Germany is succeeding to generalize at the EMU level, is not viable, except for an individual country implementing non cooperative strategies, because aggregate current account balances need to be zero. The second option, a semi-permanent government deficit, needs to be further investigated, especially in its implication for EMU macroeconomic governance

There are a number of ways, not necessarily politically feasible, to allow EMU countries to run semi-permanent government deficits. A first one could be to restore complete national budget sovereignty, (scrapping the Stability Pact). This would mean relying on market discipline alone for maintaining fiscal responsibility. As an alternative, at the opposite side of the spectrum, countries could create a federal expenditure capacity (which would imply the creation of an EMU finance minister with capacity to spend, the issuance of Eurobonds, etc.). Such an option is as unrealistic as the previous one. In an ideal world, the crisis and deflation would be dealt with by means of a vast European investment program, financed by the European budget and through Eurobonds. Infrastructures, green growth, the digital economy, are just some of the areas for which the optimal scale of investment is European, and for which a long-term coordinated plan would necessary. The increasing mistrust among European countries exhausted by the crisis, and the fierce opposition of Germany and other northern countries to any hypothesis of debt mutualisation, make this strategy virtually impossible. The solution must therefore be found at national level, without giving up European-wide coordination, which would guarantee effective and fiscally sustainable investment programs.

In general, the multiplier associated with public investment is larger than the overall expenditure multiplier. This is particularly true in times of crisis, when the economy is, like today, at the zero lower bound. With Kemal Dervis I proposed that the EMU adopts a fiscal rule similar to the one implemented in the UK by Chancellor of the Exchequer Gordon Brown in the 1990s, and applied until 2009. The new rule would require countries to balance their current budget, while financing public capital accumulation with debt. Investment expenditure, in other words, would be excluded from deficit calculation, a principle that timidly emerges also in the Juncker plan. Such a rule would stabilize the ratio of debt to GDP, it would focus efforts of public consolidation on less productive items of public spending, and would ensure intergenerational equity (future generations would be called to partially finance the stock of public capital bequeathed to them). Last, but not least, especially in the current situation, putting in place such a rule would not require treaty changes, and it is already discussed, albeit timidly, in EU policy circles.

To avoid the bias towards capital expenditure that the golden rule could trigger, we proposed that at regular intervals, for example in connection with the European budget negotiation, the Commission, the Council and the Parliament could find an agreement on the future priorities of the Union, and make a list of areas or expenditure items exempted from deficit calculation for the subsequent years.

Who are the Radicals in Europe?

January 25, 2015 6 comments

As I write the Greek people are voting.  I was puzzled in the past weeks by the fear (more in the media than in markets, actually) of a “radical” left win. Puzzled, because the radical and ideological policy makers do not seem to live in Greece, today. On January 20 I wrote a piece for the Greek website Macropolis, where I claimed that we should not expect an Armageddon if Syriza wins, but rather some welcome fresh air.  I reproduce the piece here:

It is most likely that from the elections of January 25 will emerge a Syriza-led government, the main uncertainty being how large a coalition Alexis Tsipras will have to gather to obtain a comfortable parliamentary majority. This is seen with a fair deal of preoccupation in Europe. A preoccupation that does not seem warranted. Syriza is no longer the radical party of the beginning, which called for the exit from the euro and for a default on Greek public debt. Today it is party whose program can hardly be defined revolutionary, and whose label of “radical” left is justified mostly by the drifting of other social democratic party in Europe  (for example in Italy and in France) towards the center of the political spectrum, and towards a de facto acceptance of the European macroeconomic orthodoxy. Syriza’s leader, Tsipras, as the prospects of victory become more concrete, has further softened his tones and is already actively negotiating with the Commission and with the major countries, in view of a compromise on the key points of his program. However, some of the media and some political leaders around Europe continue to present the Greek elections as an incoming Armageddon, and the possibility of a Syriza victory as the beginning of the end for the monetary union.

Let’s see what are the reasons for concern. Regarding Europe, Syriza’s agenda has two key elements. First, in case of victory Tsipras would ask to renegotiate a substantial chunk of Greece’s unbearable public debt, that today is mostly (for around 80%) in the hands of official creditors. Of course, this would mean a loss for creditors to absorb. But, as the Financial Times noted as well,  it is difficult to imagine a durable exit from the crisis that has choked Europe since 2008,  if at least a part of the debt burden that is stifling the recovery is not removed. The French finance minister has agreed yesterday that some compromise on Greek debt will be have to be found, even if some northern countries are at least as of now inflexible. What seems increasingly evident, in fact is that with the European economy back into deflation the costs, for creditor countries as well as for debtors,  of a long stagnation, seem far more important than the loss associated with the debt restructuring. The second key point of Syriza’s electoral agenda is the abandonment of austerity that, albeit less stringent than in previous years, continues to characterize European economic policy   In other words, Syriza asks to address the problem of unsustainable debt, so far hidden under the rug, and to finally acknowledge the need for a comprehensive plan to restart the European economy, that goes well beyond the accounting tricks of the Juncker plan. Syriza may seem radical to some German economist. But it is in good company of other well-known extremists such as Paul De Grauwe, the IMF, the US government, and much of the Anglo-Saxon press. The European economy is unbalanced and stuck in a deflationary  liquidity trap, Mario Draghi’s faces fierce political opposition, and his arrows are increasingly ineffective; it is therefore increasingly clear that only fiscal policy will be able to get us out of trouble.

On closer inspection, it seems far more radical the position of those who, despite having grossly underestimated the negative effects of austerity, ask for more of the same; of those who insist on advocating supply-side reforms to cope with a chronic lack of demand; and of those who boast having achieved a balanced budget one year ahead of forecasts, when Europe would benefit from a recovery of domestic demand in Germany.

What will happen then, if “radical” Syriza will win the election? Actually not much. Tsipras, comforted by opinion polls among his fellow citizens, does not consider the Grexit option. He will sit at the negotiating table to try to obtain for his country a substantial restructuring of debt, and for Europe change towards a more Keynesian policy. If on the latter objective it is hard to imagine that substantial progress will be made, debt restructuring in some form will probably happen. First, because as we said above, it seems to be an unavoidable event, just waiting for the political conditions to be reunited. And second, because Greece will negotiate from a position of strength.  Its primary budget surplus (a proof, if needed, that contrary to widespread beliefs Greece actually did its homework; and painfully so), and the low share of debt held by private investors, around 15%, would allow it not to be subject to market pressures in case of exit and default.

And contrary to some declarations that resemble to pre-electoral tactics (the Greek election game is played in the European arena as well), Greece’s exit from the euro would not arrange its European partners either. First, because it would be accompanied by default, and losses for creditors would be significantly larger than in the case of restructuring. Then, probably more important, because Grexit would have unpredictable contagion effects on other peripheral economies, which not hazardously today look with concern to the increasingly harsh tones used in particular by the German Government. In case of a Syriza victory Angela Merkel will most probably soften the tone and agree to negotiate. It is hard to imagine that orthodoxy will go as far as to push Greece out of the euro.

It goes without saying that the negotiation will be harsh, and that tensions will emerge. But today the ECB is more active in assisting countries in difficulty, and its program OMT, which recently received preliminary clearance by the European Court of Justice, is a good protection against speculative attacks.

To conclude, Europeans should stop worrying and let democracy play its role. A Syriza-led government (possibly forming an alliance with George Papandreou’s To Kinima) would not cause an earthquake. Rather the contrary, it could help stirring things up, and bring within the European debate discussion about measures the need for which is now obvious to all except to those who will not see.

Jean-Baptiste Hollande

January 15, 2014 39 comments

 le temps est venu de régler le principal problème de la France : sa production.
Oui, je dis bien sa production. Il nous faut produire plus, il nous faut produire mieux.
C’est donc sur l’offre qu’il faut agir. Sur l’offre !
Ce n’est pas contradictoire avec la demande. L’offre crée même la demande.
François Hollande – January 14, 2014

France is often pointed to as the “sick man of Europe”. Low growth, public finances in distress, increasing problems of competitiveness, a structural inability to reform its over-regulated economy.  Reforms that, it goes without saying, would open the way to a new era of growth, productivity and affluence.

François Hollande has tackled the second half of his mandate subscribing to this view. In the third press conference since he became President, he outlined the main lines of intervention to revive the French economy,  most notably a sharp reduction of social contributions for French firms (around € 30bn before 2017), financed by yet unspecified reductions in public spending.  During the press conference, he justified this decision on the ground that growth will resume once firms start producing more. Thus, he tells us, “It is upon supply that we need to act. On supply! This is not contradictory with demand. Supply actually creates demand“. Hmmm, let me think.  Supply creates demand. Where did I read this?
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Wages and Unemployment

June 1, 2012 2 comments

The April data on Italian unemployment are out, and they look no good. Not at all. The overall rate (10.2%)  is at its maximum since the beginning of monthly data series (2004), and youth unemployment is  above 35%. The rest of Europe is not doing any better, with more than 17 millions people looking for a job in the eurozone alone.

We already knew. The latest data just add to the bleak picture. We also know (I discussed it) what the consensus diagnosis is: Too many rigidities, excessively high labour costs, both because of wages and of  taxes on labour (the so-called tax wedge). Therefore, let’s have lower wages, and all will be well! Unemployment will disappear, growth will resume. Mario Draghi said it rather nicely:

Policies aimed at enhancing competition in product markets and increasing the wage and employment adjustment capacity of firms will foster innovation, promote job creation and boost longer-term growth prospects. Reforms in these areas are particularly important for countries which have suffered significant losses in cost competitiveness and need to stimulate productivity and improve trade performance.

Unfortunately, things are not that simple. What about looking at a few data? It is simple to download them  from the website of Eurostat.
Read more…

Open Letter to European Leaders

January 23, 2012 6 comments

The Financial Times just published a short letter I wrote with some colleagues.  I reproduce it here.

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(Bad) Arguments Against Debt Monetization

November 21, 2011 3 comments

I think it is useful to list, and assess, the main arguments advanced against an enhanced role of the ECB as a lender/buyer of last resort. I can think of four of them: credibility, inflation, irrelevance, ineffectiveness.

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A Sad Day

October 19, 2011 2 comments

A few days ago Pierangelo Garegnani passed away. A good summary of his contribution to the debate on economic theory can be found here, and a slightly more technical one here.

He has been my first teacher. It is thanks to him that I understood, very young, that the Keynesian principle of effective demand is not a simple special case of the neoclassical theory. Just a few weeks ago I went back to his 1979 CJE controversy on effective demand with Joan Robinson that is surprisingly actual.

But, above all, he taught me rigour, attention to the internal consistency of an argument, and love for economic theory, meant as a conceptual lens to make sense of a complex reality. I had lost him of sight, for a number of reasons of no interest. But his lesson has been invaluable along all my career, and will continue to be. A Maestro…

It is a sad day.