So let's look at currency flows, reserves, and debt.
The demise of the US dollar has been a staple of the financial media for decades. The latest buzzword making the rounds is de-dollarization, which describes the move away from USD in global payments.
De-dollarization is often equated with the demise of the dollar, but this reflects a fundamental misunderstanding of the currency markets.
Look, I get it: the US dollar arouses emotions because it's widely seen as one of the more potent tools of US hegemony. Lots of people are hoping for the demise of the dollar, for all sorts of reasons that have nothing to do with the actual flow of currencies or the role of currencies in the global economy and foreign exchange (FX) markets.
So there is a large built-in audience for any claim that the dollar is on its deathbed.
I understand the emotional appeal of this, but investors and traders can't afford to make decisions on the emotional appeal of superficial claims—not just in the FX markets, but in any markets.
So let's ground the discussion of the demise of the USD in some basic fundamentals. Now would be a good time to refill your beverage/drip-bag because we're going to cover some dynamics that require both emotional detachment and focus.
First, forget what currency we're talking about. If the USD raises your hackles, then substitute quatloos for USD.
There are three basic uses for currency:
1. International payments. This can be thought of as flow: if I buy a load of bat guano and the seller demands payment in quatloos, I convert my USD to quatloos—a process that is essentially real-time—render payment, and I'm done with the FX part of the transaction.
It doesn't matter what currency I start with or what currency I convert my payment into to satisfy the seller—I only hold that currency long enough to complete the transaction: a matter of seconds.
If sellers demand I use quatloos, pesos, rubles or RMB for those few moments, the only thing that matters is the availability of the currency and the exchange rate in those few moments.
2. Foreign reserves. Nation-states keep reserves for a variety of reasons, one being to support their own currency if imbalances occur that push their currency in unwanted directions.
The only nations that don't need to hold much in the way of currency reserves are those that issue a reserve currency—a so-called "hard currency" that is stable enough and issued in sufficient size to be worth holding in reserve.
Check out Goldman's Tousley on Global Economic Expansion, International Small Caps
3. Debt. Everybody loves to borrow money. We know this because global debt keeps rising at a phenomenal rate, in every sector: government (public), corporate and household (private sectors). See chart below.
Every form of credit/debt is denominated in a currency. A Japanese bond is denominated in yen, for example. The bond is purchased with yen, the interest is paid in yen, and the coupon paid at maturity is in yen.
What gets tricky is debt denominated in some other currency. Let's say I take out a loan denominated in quatloos. The current exchange rates between USD and quatloos is 1 to 1: parity. So far so good. I convert 100 USD to 100 quatloos every month to make the principal and interest payment of 100 quatloos.
Then some sort of kerfuffle occurs in the FX markets, and suddenly it takes 2 USD to buy 1 quatloo. Oops: my loan payments just doubled. Where it once only cost 100 USD to service my loan denominated in quatloos, now it takes 0 to make my payment in quatloos. Ouch.
Notice the difference between payments, reserves, and debt: payments/flows are transitory, reserves and debt are not. What happens in flows is transitory: supply and demand for currencies in this moment fluctuate, but flows are so enormous—trillions of units of currency every day—that flows don't affect the value or any currency much.
FX markets typically move in increments of 1/100 of a percentage point. So flows don't matter much. De-dollarization of flows is pretty much a non-issue.
What matters is demand for currencies that are enduring: reserves and debt. The same 100 quatloos can be used hundreds of times daily in payment flows; buyers and sellers only need the quatloos for a few seconds to complete the conversion and payment.
But those needing quatloos for reserves or to pay long-term debts need quatloos to hold. The 100 quatloos held in reserve essentially disappear from the available supply of quatloos.
Another source of confusion is trade flows. If the US buys more stuff from China than China buys from the US, goods flow from China to the US and US dollars flow to China.
As China's trade surplus continues, the USD just keep piling up. What to do with all these billions of USD? One option is to buy US Treasury bonds (debt denominated in dollars), as that is a vast, liquid market with plenty of demand and supply. Another is to buy some other USD-denominated assets, such as apartment buildings in Seattle.
See Speculators Bearish as Dollar Tries to Hold Major Support
This is the source of the petrodollar trade. All the oil/gas that's imported into the US is matched by a flow of USD to the oil-exporting nations, who then have to do something with the steadily increasing pile of USD.
Note what happens to countries using gold as their currency when they run large, sustained trade deficits. All their gold is soon transferred overseas to pay for their imports. So any nation using gold as a currency can't run trade deficits, lest their gold drains away.
Nations aspiring to issue a reserve currency have the opposite problem. They need enough fresh currency to inject into the global FX markets to supply those wanting to hold their currency in reserve.
This means any nation running structural trade surpluses will have difficulty issuing a reserve currency. Nations shipping goods and services overseas in surplus end up with a bunch of foreign currencies—whatever currencies their trading partners issue. This is opposite of the global markets need, i.e. a surplus (supply) of the reserve currency.
Any nation that wants to issue a reserve currency has to emit enough currency into the global economy to supply the demand for reserves. One way to get that currency into the global system is run trade deficits, as the world effectively trades its goods and services in exchange for the currency.
A reserve currency cannot be pegged; it must float freely on the global FX exchange. China's currency, the RMB, is informally pegged to the USD; it doesn't float freely according to supply and demand on global FX markets.
Nobody wants to hold a currency that can be devalued overnight by some central authority. The only security in the realm of currencies is the transparent FX market, which is large enough that it's difficult to manipulate for long.
(Global FX markets trade trillions of dollars, yen, RMB, and euros daily.)
This is why China isn't keen on allowing its currency to float. Once you let your currency float, you lose control of its exchange rate/value. The value of every floating currency is set by supply and demand, period. No pegs, no "official" rate, just supply and demand.
If traders lose faith in your economy, your ability to service debt, etc., your currency crashes.
So let's look at currency flows, reserves, and debt. In terms of currencies used for payments, the euro and USD are in rough parity. Note the tiny slice of payments made in RMB/yuan. This suggests 1) low demand for RMB and/or 2) limited supply of RMB in FX markets.
The USD is still the dominant reserve currency, despite decades of diversification. Global reserves (allocated and unallocated) are over trillion. Note that China's RMB doesn't even show up in allocated reserves—it's a non-player because it's pegged to the USD. Why hold RMB when the peg can be changed at will? It's lower risk to just hold USD.
While total global debt denominated in USD is about trillion, the majority of this is domestic, i.e. within the US economy. trillion has been issued to non-banks outside the US, including developed and emerging market debt:
According to the BIS, if we include off-balance sheet debt instruments, this external debt is more like trillion. FX swaps and forwards: missing global debt?
Every day, trillions of dollars are borrowed and lent in various currencies. Many deals take place in the cash market, through loans and securities. But foreign exchange (FX) derivatives, mainly FX swaps, currency swaps and the closely related forwards, also create debt-like obligations. For the US dollar alone, contracts worth tens of trillions of dollars stand open and trillions change hands daily. And yet one cannot find these amounts on balance sheets. This debt is, in effect, missing.
The debt remains obscured from view. Accounting conventions leave it mostly off-balance sheet, as a derivative, even though it is in effect a secured loan with the principal to be repaid in full at maturity. Only footnotes to the accounts report it.
Focusing on the dominant dollar segment, we estimate that non-bank borrowers outside the United States have very large off-balance sheet dollar obligations in FX forwards and currency swaps. They are of a size similar to, and probably exceeding, the .7 trillion of on-balance sheet debt.
So let's wrap this up. To understand any of this, we have to start with Triffin's Paradox, a topic I've addressed numerous times here. The idea is straightforward: every currency serves two different audiences, the domestic economy, and the FX/global economy. The needs and priorities of each are worlds apart, so no currency can meet the conflicting demands of domestic and global users.
Understanding the "Exorbitant Privilege" of the US Dollar (November 19, 2012)
So if a nation refuses to float its currency for domestic reasons, it can't issue a reserve currency. Period.
If a nation runs trade surpluses, it has few means to emit enough currency into the FX market to fulfill all three needs: payment, reserves, and debt.
As for replacing the USD with a currency convertible to gold: first, the issuer would need to emit trillions for the use of its domestic economy and global trade (let's say trillion as an estimate). Then it would need to issue roughly trillion for reserves held by other nations, and then another trillion (or maybe trillion) for those who wish to replace their USD-denominated debt with debt denominated in the new gold-backed currency.
Source: GoldCore
So that's at least trillion required to replace the USD in global markets, roughly three times the current value of all the gold in existence. Given the difficulty in acquiring more than a small percentage of available gold to back the new currency, this seems like a bridge too far, even if gold went to ,000 per ounce.
Personally, I would like to see a free-floating completely convertible-to-gold currency. Such a currency need not be issued by a nation-state; a private gold fund could issue such a currency. Such a currency would fill a strong demand for a truly "hard" currency. The point here is that such a currency would have difficulty becoming a reserve currency and replace the USD in the global credit market.
Issuing a reserve currency makes heavy demands on the issuing nation. Many observers feel the benefits are outweighed by the costs. Be that as it may, the problem of replacing the USD in all its roles is that no other issuer has a large enough economy and is willing to shoulder the risks and burdens of issuing a free-floating currency in sufficient size to meet global demands.
Of related interest:
How Dangerous Is Emerging Markets Dollar Debt?
.5 trillion in dollar-denominated debt
The Fed's Global Dollar Problem Borrowers around the world have gone on a dollar binge. This makes them vulnerable when interest rates rise.
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