Monday, 1 March 2010

China's reserves - what are they good for - not as much as you think

This is the second post paying homage to the Pettis explanation of the role of China's foreign reserves.

The bank of China holds massive foreign reserves. That is agreed. What is far less clear is what these reserves can be spent on. The man in the street might say - "use the money to build hospitals and schools".

Pettis explains how it really works. This is good and well explained economics (certainly better that I could do without spending a lot of time).

It is important that as many people understand the arguments here as possible especially journalists and fellow economists.

What Pettis misses is that whilst the economics is correct he underestimates the importance of the group of losers he labels "exporters" and the associated jobs. Job creation in China is crucial to maintain political stability. These is a cost to maintaining a low RMB value against the dollar but I suspect the Chinese government sees this as a price worth paying (for the time being).

Can PBoC reserves protect China? [China Financial Markets]

So the PBoC cannot give away the reserves without causing an increase in its net indebtedness. This is why I have often said, to the confusion of some of my readers, that Beijing cannot just recapitalize the banks with reserves. A substantial amount of NPLs will one way or another increase government debt. The only way Beijing can recapitalize the banks is by borrowing, or by raising direct (or hidden) taxes. Having the PBoC recapitalize the banks is just another way for the government to borrow, and since almost everyone would agree that losses in the banking system should be paid directly out of fiscal revenues, and not indirectly by the central bank, it would be a very inefficient way of doing so.

So what are reserves good for? As long as China maintains its own currency and denominates all domestic transactions in RMB, the PBoC reserves cannot be used in China. They cannot go to pay doctors’ salaries, to build bridges, to lower taxes or to subsidize consumption. They can only be used to purchase or pay for things from outside China. This means that reserves ensure that China can import foreign commodities and other goods as long as it can pay for them domestically. It also means that the PBoC can ensure the availability of dollars to repay foreign debt and foreign investment.

Here is where a great deal of confusion arises. The US crisis of 2007-08 notwithstanding, we seem implicitly to believe that a financial crisis is always caused by an inability to repay foreign debt and investment, in which case having huge amounts of reserves certainly should protect a country from financial crises.

But this is only partly true. Reserves are useless in preventing domestic debt crises (not totally, because they affect the credibility of the currency, but the RMB today doesn’t seem to suffer from a lack of credibility). As I pointed out two weeks ago, there are many cases of countries with huge amounts of reserves that nonetheless suffered from all kinds of financial crises. It is just that they never suffered from external debt crises.

When it comes to domestic debt crises, large levels of reserves actually can make things worse. Why? Because financial crises are always caused by mismatched and highly inverted balance sheets, and the central bank’s accumulation of reserves is exactly that kind of balance sheet.

Of course when the rest of the country has an equally mismatched balance sheet in the other direction – like when South Korean companies in 1997 had huge amounts of won assets financed by dollar debt – the central bank mismatch enhances financial stability. It acts against the mismatch carried by the rest of the economy, and the net impact is that the economy is less vulnerable to financial crisis. In that sense reserves are a kind of insurance to protect against excessive foreign borrowing. Because South Korea, unlike China today, had too few central bank reserves against the rest of the country’s too-large dollar obligations, its overall balance sheet was mismatched and it was susceptible to a collapse of the won.

But China has very little external debt – certainly very small compared to its reserves – and so this clearly isn’t an issue for China. But then could the huge mismatch on the PBoC’s balance sheet create the opposite risk for China?

Balance sheet mismatches

Yes and no. And this is where another great misperception occurs. Many people in China and abroad have argued that China cannot afford to raise the value of the RMB against the dollar because it would mean that China will take huge losses because of its massive reserves. After all, if the RMB rises by 10% against the dollar, the value of its reserves will have necessarily declined by $250 billion in RMB terms.

This is almost completely wrong – China will not take losses anywhere close to that amount and may probably even take a gain if it revalues the currency. Unfortunately this kind of confused thinking is nonetheless the source of some strange claims. One foreign economist even published a rather loony piece three months ago, which excoriated the Obama administration’s “bogus” trade argument for revaluation as done purely for nefarious and no doubt imperialistic reasons – and to strengthen the conspiratorial air it somehow ignored the fact that nearly every country in Europe and Asia has made the same argument.

Ironically enough, it replaced the very reasonable trade argument with one that is truly bogus, and indicates how foolish and even hysterical the discussion can become. The argument is that the US wants China to revalue the RMB not because of trade rebalancing (wrong, and this makes a common but still annoying mistake about the relationship between the currency and the trade balance) but rather because of a secret American scheme to reduce the amount that the US government has to pay China on its PBoC holdings. Appreciation of the RMB, according to this theory, represents a transfer of wealth from China to the US because it effectively reduces cost to the US of servicing the debt:

If the arguments presented for RMB revaluation by the US administration have no factual basis, why are they being put forward? The real answer lies not in trade but in debt – as other writers, such as Daryl Guppy, have rightly pointed out. In asking for RMB revaluation, President Obama’s advisers were, in effect, asking China to donate $150-$300 billion in RMB to the US via debt reduction.

The arithmetic of this is simple. China’s holdings of US dollar assets, chiefly Treasury Bonds, are around $1.5 trillion, or 10.2 trillion RMB. A 10 percent devaluation of the dollar vis-à-vis the RMB would reduce the value of these holdings to 9.3 trillion RMB, and a 20 percent dollar devaluation would reduce their value to 8.5 trillion RMB. In either case the U.S. is asking for its debt to China to be reduced by 10-20 percent in RMB terms. It may now be seen why President Obama’s advisers have a vested interest in not examining the factual situation of China’s trade. They are seeking a large debt relief package.

Sigh. The arithmetic is apparently not as simple as it seems. When one of my central-bank seminar undergraduates showed me this article in December, he was chortling with glee at its bad economics and suggested I used the article to teach the freshman class – the assumption being that no PKU finance student above the level of freshman could have ever made this kind of conceptual mistake. Perhaps not, but certainly anyone writing about currency policy should have at least done the math first.

Although this article is more confused than most about the impact of an appreciation on central bank reserves, it is worth explaining why it is wrong so as to address the less excitingly conspiratorial mistakes made by the merely confused. First, can an appreciation of the RMB reduce the cost to the US government of its debt obligations? Of course not.

The US government transacts almost exclusively in dollars, raises dollars in the form of taxes and borrowing, and owns dollar assets. Since it will pay exactly the same number of dollars to Chinese investors after the change in the RMB value as it did before the change, simple arithmetic should indicate that there will be no impact at all on the cost to the US of repaying the debt. After all, if a revaluation of the RMB causes the euro to drop against the dollar (a highly plausible outcome), could it possibly be true that the USG would reduce its payments on $100 of obligations owed to Chinese investors while increasing its payments on $100 of obligations owed to European investors? Exactly how would this work?

Are there no winners and losers?

It wouldn’t. The claim is nonsensical and violates simple arithmetic. But if the RMB is revalued are there no losses and gains anywhere? Yes, of course there are, but the distribution of these gains and losses is completely different from what this article claims, and depends wholly on the structure of various balance sheets. In a nutshell, anyone who is net long dollars against RMB loses, and anyone who is net short dollars against RMB gains.

First of all, will China as an economic entity lose? Leaving aside the vigorous discussion about whether an RMB revaluation will increase or reduce China’s long term growth prospects (I think it will), the net balance-sheet impact of a revaluation depends on whether China is net long or net short dollars. There is no precise way of answering this question, because every single economic entity in China implicitly has some complex exposure to the dollar (by which I mean foreign currencies generally) through current and future transactions, but generally speaking China is likely to gain from a revaluation because after the revaluation it will be exchanging the stuff it makes for stuff it buys from abroad at a better ratio. The value of what it sells abroad will rise relative to the value of what it buys from abroad, and if we could correctly capitalize those values on the balance sheet, it would probably show that the Chinese balance sheet would improve with a revaluation of the RMB.

Some people might make a more sophisticated argument that since China is a net creditor – i.e. it is net long dollars – it will lose by a revaluation of the RMB. This argument also turns out to be wrong, but for more complex reasons, and to explain why I have to put on my former-trader’s hat and explain the difference between a real loss and a realized loss.

If you believe that the RMB is undervalued then you must accept that China takes a “real” loss every single time it exchanges a locally produced good or asset for a foreign one. It does not “realize” the loss, however, until it revalues the RMB to its “correct” value.

In other words, the PBoC, as the representative of China’s net creditor status, will immediately realize a loss when the RMB revalues, but this loss did not occur because of the revaluation. It occurred the very day the trade took place. When a Chinese producer sold goods to the US and took payment in US dollars, there was an unrealized economic loss equal to the undervaluation of the RMB. This unrealized loss was passed onto the PBoC when it bought the dollars from the exporter and paid RMB.

This loss, however, will not actually show up until the RMB is revalued, which forces the real loss to be realized (i.e. recognized as an accounting matter). Postponing the revaluation, then, is not the way to avoid the loss – it is too late for that. The only way to avoid future additional loss is to stop making the exchange, which means, ironically, that the longer the PBoC postpones the revaluation of the RMB, the greater the real loss it will take.

So a revaluation of the RMB will not cause any real loss to any Chinese entity today. The loss already occurred but hasn’t been realized.

But wait, if the RMB is revalued by 10%, the value of the PBoC’s assets will immediately decline by $250 billion in RMB terms. Since the Chinese measure their wealth in RMB, isn’t this a real additional loss for China?

No, because remember that the only thing you can do with reserves is pay for foreign imports or repay foreign obligations. And just as the value of the reserves drops 10% in RMB terms, so does the value of all those foreign payments – by definition they must go down by exactly the same amount in RMB terms.

This means that China takes no loss. It can buy and pay for just as much “stuff” after the revaluation, and with less implied PBoC borrowing, as it could before the revaluation – and the real value of money is what you can buy with it. So the real value of the reserves hasn’t changed at all – just the accounting value in RMB, but this simply recognizes losses that were already taken long ago when the trade was first made, and should be a largely irrelevant number (except perhaps for conspiracy theorists).

Wealth is transferred within China

But that doesn’t mean nothing at all happened. Although the Chinese overall balance sheet is probably a little better off with the revaluation, within China there are a whole set of winners and losers. Which is which depends on the structure of individual balance sheets. Basically everyone who is net long dollars against the RMB loses in an appreciation, and everyone who is net short dollars against the RMB wins.

Who loses? Of course the PBoC is a big loser. It has a hugely mismatched balance sheet in which it is long nearly $3 trillion (if everything were correctly counted), funded by an equivalent amount of RMB obligations.

Exporters and their employees, too, are naturally long dollars and so they would lose. They are long dollars because more of the net value of their current and future production less current and future costs is denominated in dollars (they are “sticky” to dollar prices) – for example labor costs, land, and almost all other inputs except imported components are valued in RMB, whereas most revenues are valued in dollars.

Chinese companies with more assets abroad then foreign debt might also lose. Who wins? Nearly everyone else in China, since everyone in the country is short dollars to the extent that there are imported goods in his life. The local tea seller is short dollars if his tea is delivered to him in gas-guzzling trucks, as is the family planning to visit Egypt next year, as is the local provider of French perfumes, as is a teenager who wants to buy Nike shoes, and so pay for the corporate sponsorship of a Brazilian soccer star playing for a Spanish team. Every household and nearly every business in China is, in one way or another, an importer (and this is true in every country), so unless they own a lot of assets abroad they are effectively short dollars and will benefit from an appreciation in the RMB.

Revaluing the RMB, in other words, is important and significant because it represents a shift of wealth largely from the PBoC, exporters, and Chinese residents who have stashed away a lot of wealth in a foreign bank, in favor of the rest of the country. Since much of this shift of wealth benefits households at the expense of the state and manufacturers, one of the automatic consequence of a revaluation will be an increase in household wealth and, with it, household consumption. This is why revaluation is part of the rebalancing strategy – it shifts income to households and so increases household consumption.

So a revaluation has important balance sheet impacts on entities within China, and to a much lesser extent, on some entities outside China. But since it merely represents a distribution of wealth within China should we care about the PBoC losses or can we ignore them? Unfortunately we cannot ignore them and might have to worry about the PBoC losses because, once again, of balance sheet impacts.

The PBoC runs a mismatched balance sheet, and as a consequence every 10% revaluation in the RMB will cause the PBoC’s net indebtedness to rise by about 7-8% of GDP. This ultimately becomes an increase in total government debt, and of course the more dollars the PBoC accumulates, the greater this loss. (Some readers will note that if government debt levels are already too high, an increase in government debt will sharply increase future government claims on household income, thus reducing the future rebalancing impact of a revaluation, and they are right, which indicates how complex and difficult rebalancing might be). In that sense it is not whether or not China as a whole loses or gains from a revaluation that can be measured by looking at the reserves, and I would argue that it gains, but how the losses are distributed and what further balance sheet impacts that might have.

I apologize for such a long post, but I promised several people that I would try to address some of these issues, and it is hard to do so briefly. In short, what the PBoC does to the value of the RMB and how it invests its reserves matter a lot to China and the world, but not always in the way China and the world think. To get it right, we need to keep in mind the functioning of the balance of payments, the PBoC and other balance sheets, and the way the two are interrelated.



Renaud said...

Very interesting, and very different from all the nonsense we read everywhere... Thanks

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Johan Nilsson said...

Peter Schiff suggested China should use foreign reserves for their stimulation package:

知道 said...

這麼優的部落格,不踩一下不開心 ........................................

馬甲 said...