Explaining Central Banks' Gold Purchases

By: David_Howden

The last two years marked a significant shift in central banks' attitudes toward gold. Since 1988, central banks have been net sellers of the precious metal. Lacking convertibility of their paper currencies into the commodity, this occurrence makes perfect sense. Why hold a physical asset with costly storage fees when there is no risk that it will ever be needed? Better to hold an interest-bearing (and easily stored) asset like a government security to earn a profit in the interim. So goes the typical explanation for why central banks load their balance sheets with financial assets instead of physical ones.

Yet over the last two years a dramatic shift in gold purchases has occurred. In the third quarter of this year alone, net gold purchases by central banks amounted to 150 tons — more than double the amount of the whole yearly total of 2010. For the first time in over 20 years, central banks of the world are buying more gold than they are divesting themselves of.

Yet if central banks deal exclusively in nonconvertible (and fiat) money, what explains the sudden change of heart?

Convertibility may bring costs for a central bank, but it also has its benefits. In particular, it solved two problems:

1. How would central banks maintain independence from their governments?
2. How much money should they supply?

Without convertibility, these two issues get significantly more complicated. In this short essay, we will focus on only the first of these problems.

Independence for a central bank comes from the government that grants it the monopoly rights to money production in its jurisdiction. Congress provides oversight for the Fed, but no government agent specifically determines the day-to-day operations of the central bank. (This is debatable, of course, but that is a separate issue.)

This independence is coveted, and for good reason. A government in charge of its printing press has an incentive to pay for its expenditures not through taxes, or even by debt, but through the relatively painless act of printing the necessary money. The problem with this is the ensuing inflationary bias that a government-controlled printing press has.

An independent central bank issues currency, which is recorded as a liability on its balance sheet. In an offsetting transaction, an asset is purchased that balances the accounting statement. Though this asset can be anything, it has become the norm that it is a relatively safe interest-bearing government bond. Gold still comprises a portion of most central banks' balance sheets, but because it has its own costs and returns no interest, it is a relatively unattractive option.

If a central bank wants to directly increase the money supply, it increases its liabilities (sells cash) and correspondingly increases its assets (buys bonds). If it wants to decrease the money supply, it decreases its assets (sells bonds), which then decreases its liabilities (by decreasing the amount of cash outstanding).

As a thought experiment, imagine what would happen if a central bank didn't sell any assets but instead had them lose value. As an extreme example, imagine that the bonds it holds default due to the insolvency of their issuer. Cash does not automatically have to adjust by decreasing by an equivalent amount. To maintain the accounting equality, the relevant liability that changes is the central bank's equity. Accounting insolvency is defined as being that moment when your equity turns negative.

It is difficult to imagine a central bank turning insolvent. Indeed, by and large this doesn't happen, though as Philipp Bagus and I outline in our book, Deep Freeze: Iceland's Economic Collapse, recent examples do exist (see also here). A central bank that holds bonds as its assets only maintains its solvency as long as the issuer of its bonds maintains its own solvency.

The problem that develops is what to do if equity turns negative. Recapitalization must result, but by whom? In an extreme scenario, the government can directly recapitalize the central bank. This action is not without consequences. Central banks enjoy, at least in some countries, high degrees of independence because they do not rely on their governments for funding. Indeed, as they remit profits back to the government at year's end, they are revenue generators for the government.

But a government supporting a central bank is also increasingly interested in how that bank is run. Increased oversight of the monetary authority might be welcomed by some, but it also opens Pandora's box: perhaps with the increased oversight the government will also start influencing the central bank's operating mandates, or even its daily operations.

Gold purchases by central banks are completely rational responses given this independence dilemma. With the solvency of some large governments being increasingly questioned each day, investors and central banks alike are also questioning the value of their debts. Greece just gave private holders of its debt a 50 percent haircut; could the same for governments and other organizations be far off? The solvency of a growing list of countries gets longer by the week — Ireland, Portugal, Italy, Spain — not even the United States is immune to this possibility, as its own debt crisis illustrates.

Holding gold does not eliminate the possibility of negative equity for the central bank (indeed, it might even increase the odds). But given the recent past it makes for an attractive option. As countries demonstrate their difficulties in getting their debts and deficits in order and thus improving their solvency outlooks, the value of their debt becomes questionable as well.

While holding any real asset serves no direct use for a central bank, it does act as an insurance policy of sorts. The solvency of a central bank holding government debt is subordinate to the solvency of the countries whose debt it holds. For a central bank worried about the value of its assets, diversification of its assets into gold makes for a rational alternative.

David Howden is a PhD candidate at the Universidad Rey Juan Carlos, in Madrid, and winner of the Mises Institute's Douglas E. French Prize. Send him mail. See his article archives. Comment on the blog.

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