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How Big A Threat Will The Petro-Yuan Be To The Dollar-Based System?

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EDITOR'S NOTE: The article below talks about the petro-yuan threat to US dollar supremacy. Here’s the scoop: China is currently in talks with Saudi Arabia over trading oil for yuan instead of dollars. Should China and Russia succeed in this arrangement, then the erosion of the US dollar may shift into high gear. The author below writes, “no one expects the petro-yuan to displace the petro-dollar and the dollar-based payments system anytime soon.” The key word here is “displace,” which can easily be mistaken for “replace.” The author also seems to be hinting at this potential risk. It’s one thing to “weaken” the dollar’s hegemonic position in the global economy; another thing to replace it. It sounds like a scary prospect. But first, would China even want the yuan to become the world’s most dominant currency? Some would argue no, and for sound reasons. One thing. China enjoys quite a few advantages by NOT having the burden of being the world’s monetary hegemon. But even if China sought to dethrone the dollar, the yuan wouldn’t meet the conditions to do so. Read the article below alongside the one we linked to and decide for yourself as to whether the petro-yuan poses a legitimate threat to the dollar’s reserve status. 

China has recently revived talks with Saudi Arabia on settling some oil trades in renminbi in a move that many market players see as a first step towards gradually shifting the global oil trade to the renminbi from the US dollar, creating the ‘petro-yuan’.  

Meanwhile, the Russo-Ukrainian crisis has raised the possibility of Russia trading oil with China using the renminbi instead of USD.

If Saudi Arabia and Russia were to work with China, the amount of renminbi-denominated oil trades could rise sharply and transactions could go through China’s payments system, the Cross-border Interbank Payments System (CIPS), at the expense of the dollar and the SWIFT system.

This would be a serious challenge to the US dollar system as, arguably, the dollar’s global reserve currency status is largely based on its importance in the energy and commodity markets.

Linchpin of dollar supremacy

One of the staples of the past four decades, and an anchor sustaining the dollar’s worldwide status, was a global financial system based on the petro-dollar. This was a world in which oil producers would sell their products to the US and the rest of the world for dollars. They would recycle the proceeds into USD assets by investing in dollar-bloc markets, propping up the dollar as the world’s reserve currency.

This has made the oil market, and by extension the global commodity market, a linchpin for sustaining the US as the world’s undisputed financial superpower. If that linchpin were to fall away, the dollar’s status would start to crumble.

Saudi acceptance of renminbi for oil could help chip away at the supremacy of the dollar. The question is whether Saudi Arabia would want to do that when it is also a major US ally.

Arguably, Saudi Arabia has an incentive to get closer to China. It has become increasingly unhappy with US security commitments to defend the kingdom, as the Wall Street Journal reported recently. Meanwhile, China has strengthened its relationship with Saudi Arabia in recent years by increasing investment in, and military cooperation with, the kingdom. [1]

One way for Saudi Arabia to balance its interests between China and the US would be to trade oil with China (and probably also with Asia) in renminbi using CIPS, while trading oil with the rest of the world in dollars via SWIFT.

The petro-yuan’s threat

How big a threat will the petro-yuan be to the dollar-based payments system? It is impossible to give an accurate answer at this stage as it will take time for the petro-yuan oil talks to conclude. We may glean clues from public information on the relationships and oil trades between China and other major producers.

Some market players initially estimated that switching the oil trade from the dollar to the renminbi could move USD 600 billion to USD 1 trillion worth of transactions out of the dollar a month. [2]

Let us take the mid-point of USD 800 billion. Now consider the SWIFT data on global payments currencies. In February 2022 (the latest data available at the time of writing), the renminbi was ranked the fifth most-widely-used currency for global payments, accounting for 2.23% of the total (Exhibit 1).

Source: Investors' Corner

Since about USD 5 trillion worth of payment messages moves through SWIFT worldwide every day, or USD 100 trillion a month (based on an average of 20 working days per month), the renminbi’s 2.23% would amount to about USD 2.23 trillion a month.

If we add the USD 800 billion of oil trade that would be settled in renminbi, the yuan’s share of global payments would rise to a little over 3% in the SWIFT system. Although this would be an increase of 0.8 percentage points only, the RMB would displace the Japanese yen and become the fourth most-widely-used global currency.

The impact on CIPS would be more dramatic. According to the CIPS website, the system processed about USD 61 billion worth of payment messages a day in February, or USD 12.2 trillion a month. Adding USD 800 billion would boost the volume by almost 7% to USD 13 trillion a month.

However, it could go further. If Saudi Arabia and Russia start to use renminbi for oil trades, other countries would likely follow. At this point, Russia, Iran, Venezuela and Indonesia are already settling some of their oil trades with China in renminbi. The volume, and the scope of using renminbi for international payments, could grow as more countries diversify out of US dollar risk.

USD hegemony – A case of slow erosion

Of course, no one expects the petro-yuan to displace the petro-dollar and the dollar-based payments system anytime soon. There are strong reasons to expect the renminbi’s challenge to the US dollar hegemony to be a drawn-out process.

To make the renminbi attractive for payments, China will need to liberalise its financial markets and its capital account. This means allowing foreigners to trade Chinese assets without capital or bureaucratic controls. 

The pace of liberalisation has been slow. Given China’s large debt overhang (with the debt-to-GDP ratio estimated at 284% in 2021), liberalising its capital account quickly would risk a debt-currency crisis pulling the rug from under the Chinese system.

A major obstacle is that several major oil and gas producers in the Middle East have currencies pegged to the US dollar, including Saudi Arabia, the United Arab Emirates, Oman, and Qatar. Kuwait’s currency is pegged to a basket of currencies dominated by the dollar. These pegs acted as a stability anchor for these countries when the US was the world’s largest oil importer.

With China replacing the US as the world’s largest oil importer, it is challenging the sustainability of these pegs. Inertia could keep them intact for a long time, especially when paying for oil in renminbi – or any currency other than the dollar – raises a foreign exchange risk that these countries have not faced in decades.

Moreover, despite years of financial reforms, China still does not have a large derivatives market to provide sufficient tools for hedging renminbi exchange risk.

Ultimately, China needs to establish the renminbi’s global credibility for it to gain acceptance. However, it appears that China’s disruption of the future global payments system is likely an emerging reality even before the renminbi becomes a global currency.


[1] “As Saudi Arabia Cools on the U.S., It Warms to China.” The Wall Street Journal Podcast, 17 March 2022, full transcript retrieved from

[2] The Petro-yuan: A Momentous Game Changer for the Global Energy Markets, the Global Economy and Sanctions.” IAEE Energy Forum, Third Quarter, pp.29 – pp.33. Retrieved from and “China Will ‘Compel’ Saudi Arabia to Trade Oil in Yuan — And That’s Going to Affect the US Dollar.” CNBC, 11 October 2017. Retrieved from


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Originally published on Investors' Corner.

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