Default ≠ Drachma

I've been saying for a while that people should stop assuming that a Greek default implies leaving the euro for a new currency. Much of the media coverage of the negotiations continues to assume that the two are inseparable -- that, in effect, the negotiations are over Greece remaining in the euro system. But there is no logical necessity for a default to be followed by the creation of a new currency; indeed it's hard to see any reason why the former should lead to the latter.

Finally the consensus that default must mean exit seems to be breaking down. Here's John Cochrane:

Please can we stop passing along this canard -- that Greece defaulting on some of its bonds means that Greece must must change currencies. Greece no more needs to leave the euro zone than it needs to leave the meter zone and recalibrate all its rulers, or than it needs to leave the UTC+2 zone and reset all its clocks to Athens time. When large companies default, they do not need to leave the dollar zone. When cities and even US states default they do not need to leave the dollar zone.

Cochrane's political views are one thing, but he is a very smart guy. And in this case, I think the Walrasian view of money as numéraire is helpful. It's important to remember that euros are not physical things, they are simply units in which contractual commitments are denominated.

And now in today's FT, Wolfgang Munchau writes:

The big question — whether Greece will leave the eurozone or not — remains unanswerable. But I am now fairly certain it will default. My understanding is that some eurozone officials are at least contemplating the possibility of a Greek default but without Grexit. ... 

On whom could, or should, Greece default? It could default on its citizens by not paying public-sector wages or pensions. That would be morally repugnant and politically suicidal... it could default on the two loans it received from its EU partners, though it is not due to start repaying those until 2020... Defaulting on the IMF and ECB is the only option that would bring genuine financial relief in the short term. ... 

Default is not synonymous with exit. There is no EU ruling that says you have to leave the eurozone when you default on your debt. The link between default and exit is indirect; if a country defaults, its defaulting securities are no longer eligible as IOUs for the country’s banks to tender at ECB money auctions.... 

So to default “inside the eurozone” one only needs to devise another way to keep the banking system afloat. If someone could concoct a brilliant answer, there would be no need for Grexit. 

... The economic case for a debt default is overwhelming. ... Full servicing would require huge primary surpluses — that is, surpluses before payment of interest on debt. It would leave Greece trapped in a debt depression for a long time. The scheduled primary surplus for 2016 is 4.5 per cent, which is bordering on the insane. Athens absolutely needs to default. At the same time, there is a strong case for remaining in the eurozone.

This hits all the key points. First, there is no logical connection between defaulting and creating a new currency. (Probably better to use that wording, rather than "exit.") Second, default would open up significant space in Greece's fiscal position, and would not hurt the its external position. This follows from the fact that Greece currently has a substantial primary surplus and a slight positive trade balance. [1] Third, the only reason there is any link is that default might cause the ECB to cease accepting new liabilities from Greek banks, and it might be hard for the Bank of Greece and/or Greek government to take the ECB's place under the existing rules of the eurosystem. So, fourth, the real problem with default is the need to ensure that the Greek payments system continues to operate even if the ECB tries to sabotage it. 

The phrasing of that last point might seem hyperbolic. But imagine if, during the Detroit bankruptcy negotiations, the Fed had announced that if the city did not pay off its creditors in full, the Fed would use all its regulatory tools to shut down any banks operating in the city. That's a close analogy to the situation in Europe.

Maintaining interbank payments within Greece does not necessarily require the Greek government to issue any new liabilities. And it certainly doesn't require that Greek bank accounts be redenominated. All that is necessary is that if someone with a deposit in Greek bank A wants to make a payment to someone with an account at Greek bank B, there is some system by which bank A can transfer a settlement asset to bank B, acquiring the asset if necessary by issuing a new liability. The technical aspect of this is not challenging, and even the practical aspect, since the Bank of Greece already performs exactly this function. As far as I can tell, the only problem is a political one -- given that the Bank of Greece is run by holdovers from the former Greek government, it's possible that if the ECB told them to stop facilitating payments between Greek banks they would listen, even if the Greek government said to carry on. 

Now some people will say, "oh but the Treaties! oh but the Bank of Greece isn't allowed to accept the liabilities of Greek banks if Brussels says no! oh but the ELA rules!" [2] Obviously I think this is silly. In the first place, the "rules" are hopelessly vague, so if the ECB's does shut off liquidity to Greek banks in the event of a default, that will be a political choice. And on the other side, Greece is a sovereign nation. It may have delegated decisionmaking at the Bank of Greece to the ECB, but that also was a political choice, which can be reversed. More to the point, the rules definitely don't allow for exit. Nor for that matter do they allow for default -- and as Munchau correctly points out, cuts to the salaries and pensions of public employees are also a form of default. Rules are going to be broken, whether Greece creates a new currency or not. And it is not at all clear to me that the demands on the Greek state from recreating the drachma, are any less than the demands from maintaining payments between Greek banks in the absence of ECB support -- which is all it takes to default and continue using the euro. If anything, the former seems strictly more demanding than the latter, since Greece will need its own central bank either way.

This all may seem pedantic, but it is important: The threat of ejection from the euro is one of the most powerful weapons the creditors have. And let's remember, the only direct consequence of a breakdown in negotiations, is a default on Greek government debt.

Now there is another argument, which is that exit is positively desirable since a flexible currency would allow Greece to reliably achieve current account balance even once income growth resumes. I think that is wrong -- but that's a topic for another post. (I discussed the issue a couple years ago here.) But even if, unlike me, you think that a flexible exchange rate would be helpful for Greece, it  doesn't follow that that decision is bound up with the debt negotiations.

[1] It is possible that the apparent primary surplus is due to manipulation of the budget numbers by the previous government. I think that the arguments here would still apply if there were really a primary deficit, but it would complicate things.

[2] Or, "oh but that would be ungrateful." In one of its more disingenuous editorials I can recall, the FT last month wept crocodile tears over the fact that "default on Greek debts would deter wealthier voters from ever again helping their neighbours in financial distress." Apparently German banks didn't care about the interest on all the Greek government bonds they bought; they only lent so long out of kindness, I suppose. Also, it doesn't seem to have occurred to the editorialists that deterring the financing of large current account deficits might be a good thing.


UPDATE: This seems important:

A country that defaults would not have to leave the euro, the European Central Bank's vice president said on Monday...  

Vitor Constancio discussed the possibility of a debt default and controls on the movement of money, saying neither necessarily meant a departure from the currency bloc. "If a default will happen ... the legislation does not allow that a country that has a default ... can be expelled from the euro," he told the European Parliament... 

Constancio also touched on the possibility of capital controls. "Capital controls can only be introduced if the Greek government requests," he said, adding that they should be temporary and exceptional. "As you saw in the case of Cyprus, capital controls did not imply getting out of the euro." ... 

"We are convinced at the ECB that there will be no Greek exit," he said. "The (European Union) treaty does not foresee that a country can be formally, legally expelled from the euro. We think it should not happen." ... 

"If the state defaults, that has no automatic implications regarding the banks, if the banks have not defaulted, if the banks are solvent and if the banks have collateral that is accepted," Constancio said.

Maybe they were worried that Greece would call their bluff. Or who knows, maybe the culture of the place has changed under Draghi and they are no longer ready to serve as austerity's battering ram. In any case, it's hard to see this as anything but a big step back by the ECB.


UPDATE 2: Martin Wolf is on board as well. (Though he doesn't like my Detroit analogy.)

The IMF on Investment since 2008

Vox today has a useful piece by five IMF economists on the behavior of business investment during and since the Great Recession. [1] From my point of view, there are three important points here.

1. The most important difference between this cycle and previous ones is the larger fall and slower recovery of private investment. This has always been my view, and I think it's an especially important point for heterodox folks to take on board because there has been such (excessive, in my opinion) emphasis on the inequality-consumption link in explaining persistent demand weakness.

This relationship between output and investment is consistent with previous recessions: 

business investment has deviated little from what could be expected given the weakness in economic activity. In other words, firms have reacted to weak sales – both current and prospective – by reducing capital spending. Indeed, in surveys, businesses typically report lack of customer demand as the dominant challenge they face.

In other words, the old Keynesian "accelerator" story explains the bulk of the shortfall in investment since 2008.

2. Historically, deviations in output and investment has been persistent; there is no tendency for recessions to be followed by a return to the previous trend. 

The blue line shows the behavior of output and investment in recessions historically, relative to the pre-recession trend. Note that is no tendency for the gap to close, as much as six years after the previous peak.

The authors don't emphasize this point, but it is important. If we look at recessions across a range of industrialized countries, on average the output losses are permanent. There is no tendency for output to return to the pre-trend. If this is true, there's no basis for the conventional distinction between a demand-determined "short run" and a supply-determined "long run." There is just one dynamic process. Steve Fazzari has reached this same conclusion, as I've written about here. Roger Farmer has just posted an econometric demonstration that in the postwar US, output changes are persistent -- there is no tendency to return to a trend.

 3. There's no reason to think that the investment deficit is explained by financial constraints. I should say frankly that the paper didn't move my priors much at all on this point, but it's still interesting that that's what it says. By their estimates, firms in more "financially-dependent" sectors (this is a standard technique, but whatever) initially reduced investment more than firms in less financially-dependent sectors, but as of 2013 investment in both groups of firms were the same 40 percent below the pre-crisis trend. If you believe these results -- and again, I don't put much weight on them, except as an indicator of the IMF flavor of received opinion -- then while tighter credit may have helped trigger the crisis, it cannot explain the persistent weakness of demand. Or from a policy perspective -- and the authors do say this -- measures to improve access to credit are unlikely to achieve much, at least relative to measures to boost demand.

Investment by sector

So these are features it might be nice to incorporate into a macro model -- investment determined mainly by (changes in) current output; a single system of demand-based dynamics, as opposed to a short-run demand story and a long-run supply-based steady state growth path; a possibility of multiple equilibria, such that (let's say) a temporary interruption of credit flows can produce a persistent reduction in output.  On one level I don't especially trust these results. But on another level, I think they provide a good set of stylized facts that macro models should aspire to parsimoniously explain. 

[1] The European Vox, not the Klein-Yglesias one.


UPDATE: Krugman today points to the same work and also interprets it as support for an accelerator story.

New-Old Paper on the Balance of Payments

Four or five years ago, I wrote a paper arguing that the US current account deficit, far from being a cause of the crisis of 2008, was a stabilizing force in the world economy. I presented it at a conference and then set it aside. I recently reread it and I think the arguments hold up well. If anything the case that the US, as the center of the world financial system, ought to run large current account deficits indefinitely looks even stronger now, given the contrasting example of Germany's behavior in the European system.

I've put the paper up as a working paper at John Jay economics department site. Here's the abstract:

Persistent current account imbalances need not contribute to macroe- conomic instability, despite widespread claims to the contrary by both mainstream and Post Keynesian economists. On the contrary, in a world of large capital inflows, a high and stable level of world output is most likely when the countries with the least capacity to generate capital inflows normally run current account surpluses, while the countries with the greatest capacity to generate capital inflows (the US in particular) normally run current account deficits. An emphasis on varying balance of payments constraints is consistent with the larger Post Keynesian vision, which emphasizes money flows and claims are not simply passive reflections of “real” economic developments, but exercise an important influence in their own right. It is also consistent with Keynes’ own views. This perspective helps explain why the crisis of 2008 did not take the form of a fall in the dollar, and why reserve accumulation in East Asia successfully protected those countries from a repeat of the crisis of 1997. Given the weakness of the “automatic” mechanisms that are supposed to balance trade, income and financial flows, a reduction of the US current account deficit is likely to exacerbate, rather than ameliorate, global macroeconomic instability.

You can read the whole thing here.

The Greek Crisis and Monetary Sovereignty

Note: This post only really makes sense as a continuation of the argument in this one.


It's a general rule that the internal logic of a system only becomes visible when it breaks down. A system that is smoothly reproducing itself provides no variation to show what forces it responds to. Constraints are invisible if they don't bind. You don't know where power lies until a decision is actively contested.

In that sense, the crises of the past seven years — and the responses to them — should have been very illuminating, at least if we can figure out what to learn from them. The current crisis in Greece is an ideal opportunity to learn where power is exercised in the union, and how tightly the single currency really binds national governments. Of course, we will learn more about the contours of the constraints if the Syriza government is more willing to push against them.

The particular case I'm thinking of right now is our conventional language about central banks "printing money," and the related concept of monetary sovereignty. In periods of smooth reproduction we can think of this as a convenient metaphor without worrying too much about what exactly it is a metaphor for. But if Greece refuses to accept the ECB's conditions for continued support for its banks, the question will become unavoidable.

We talk about governments "printing money" as if “money” always meant physical currency and banks were just safe-deposit boxes. Even Post Keynesian and MMT people use this language, even as they insist in the next breath that money is endogenously created by the banking system. But to understand concretely what power the ECB does or does not have over Greece, we need to take the idea of credit money seriously.

Money in modern economies means bank liabilities. [1] Bank liabilities constitute money insofar as a claim against one bank can be freely transferred to other units, and freely converted to a claim against another bank; and insofar as final settlement of claims between nonfinancial units normally takes the form of a transfer of bank liabilities.

Money is created by loan transactions, which create two pairs of balance-sheet entries — an asset for the borrowing unit and a liability for the bank (the deposit) and a liability for the borrowing unit and an asset for the bank (the loan). Money is destroyed by loan repayment, and also when the liabilities of a bank cease to be usable to settle claims between third parties. In familiar modern settings this lack of acceptability will be simultaneous with the bank being closed down by a regulatory authority, but historically things are not always so black and white. In the 19th century, it was common for a bank that ran out of reserves to suspend convertibility but continue operating. Deposits in such banks could not be withdrawn in the form of gold or equivalent, but could still be used to make payments, albeit not to all counterparties, and usually at a discount to other means of payment. [2]

To say, therefore, that a government controls the money supply or "prints money" is simply to say that it can control the pace of credit creation by banks, and that it can can maintain the acceptability of bank liabilities by third parties — which in practice means, by other banks. It follows that our conventional division of central bank functions between monetary policy proper (or setting the money supply), on the one hand, and bank regulation, operation of the interbank payments system, and lender of last resort operations, on the other, is meaningless. There is no distinct function of monetary policy, of setting the interest rate, or the money supply. "Monetary policy" simply describes one of the objectives toward which the central bank's supervisory and lender-of-last-resort functions can be exercised. It appears as a distinct function only when, over an extended period, the central bank is able to achieve its goals for macroeconomic aggregates using only a narrow subset of the regulatory tools available to it.

In short: The ability to conduct monetary policy means the ability to set the pace of new bank lending, ex ante, and to guarantee the transferability of the balances thus created, ex post.

It follows that no country with a private banking system has full monetary sovereignty. The central bank will never be able to exactly control the pace of private credit creation, and to do so even approximately except by committing regulatory tools which then are unavailable to meet other objectives. In particular, it is impossible to shift the overall yield structure without affecting yield spreads between different assets, and it is impossible to change the overall pace of credit creation without also influencing the disposition of credit between different borrowers. In a system of credit money, full monetary sovereignty requires the monetary authority to act as the monopoly lender, with banks in effect serving as just its retail outlets. [3]

Now, some capitalist economies actually approximate to this pretty closely. For example the postwar Japanese system of “window guidance” or similar systems in other Asian developmental states. [4] Something along the same lines is possible with binding reserve requirements, where the central bank has tight operational control over lending volumes. (But this requires strict limits on all kinds of credit transactions, or else financial innovation will soon bypass the requirements.) Short of this, central banks have only indirect, limited influence over the pace of money and credit creation. Such control as they do have is necessarily exercised through specific regulatory authority, and involves choices about the direction as well as the volume of lending.  And it is further limited by the existence of quasi-bank substitutes that allow payments to be made outside of the formal banking system, and by capital mobility, which allows loans to be incurred, and payments made, from foreign banks.

On the other hand, a country that does not have its “own” currency still will have some tools to influence the pace of credit creation and to guarantee interbank payments, as long as there is some set of banks over which it has regulatory authority.

My conclusion is that the question of whether a country does or does not have its own currency is not a binary one, as it's almost always imagined to be. Wealth takes to form of a variety of assets, whose prospective exchange value can be more or less reliably stated in terms of some standard unit; transactions can be settled with a variety of balance-sheet changes, which interchange more or closely to par, and which are more or less responsive to the decisions of various authorities.  We all know that there are some payments you can make using physical currency but not a credit or debit card, and other payments you can make with the card but not with currency. And we all know that you cannot always convert $1,000 in a bank account to exactly $1,000 in cash, or to a payment of exactly $1,000 – the various fees within the payment system means that one unit of “money” is not actually always worth one unit. [5]

In normal times, the various forms of payment used within one country are sufficiently close substitutes with each other, exchange sufficiently close to par, and are sufficiently responsive to the national monetary authority, relative to forms of payment used elsewhere, that, for most purposes, we can safely speak of a single imaginary asset “money.” But in the  Greek case, it seems to me, this fiction obscures essential features of the situation. In particular, it makes the question of being “in” or “out of” the euro look like a hard binary, when, in my opinion, there are many intermediate cases and no need for a sharp transiton between them.



[1] Lance Taylor, for instance, flatly defines money as bank liabilities in his superb discussion of the history of monetary thought in Reconstructing Macroeconomics.

[2] Friedman and Schwartz discuss this in their Monetary History of the United States, and suggest that if banks had been able to suspend withdrawals when their reserves ran out, rather than closed down by the authorities, that would have been an effective buffer against against the deflationary forces of the Depression.

[3] Woodford's Interest and Prices explicitly assumes this.

[4] Window guidance is described by Richard Werner in Masters of the Yen. The importance of centralized credit allocation in Korea is discussed by the late Alice Amsden in Asia's Next Giant. 

[5] Goodhart's fascinating but idiosyncratic History of Central Banking ends with a proposal for money that does not seek to maintain a constant unit value – in effect, using something like mutual fund shares for payment.