Global Oil Trade Shifts to the Chinese Yuan as US Dollar Dominance Declines
London, Monday, 6 April 2026.
Global oil trade is undergoing its biggest currency shift since 1974. Most intriguingly, Iran is now conditioning Strait of Hormuz tanker passage entirely on Chinese yuan settlements.
The Fracture of the 1974 Petrodollar Pact
The dominance of the United States dollar has been heavily anchored by the petrodollar system, established in 1974 under the direction of Henry Kissinger [2]. This landmark agreement saw Saudi Arabia commit to pricing its oil exports exclusively in U.S. dollars in exchange for American security guarantees, creating a framework where surplus oil revenues were continuously reinvested into U.S. financial assets [1][2]. By the late 20th century, this arrangement ensured that between 80 percent and 90 percent of all global oil trade was conducted in greenbacks [2]. However, the macroeconomic landscape fundamentally shifted in June 2024 when Saudi Arabia opted not to renew this exclusive dollar-pricing commitment [1].
Infrastructure for a Multipolar Currency Era
The transition toward the petroyuan is not a sudden accident but the result of years of meticulous financial engineering [GPT]. Since 2018, China has been actively building the necessary infrastructure for yuan internationalization, which includes the Cross-Border Interbank Payment System and establishing currency swap agreements equivalent to over 500 billion dollars with more than 30 countries [2]. Saudi Arabia has integrated into this ecosystem by securing a 7 billion dollar currency swap with China and participating in the mBridge payment platform, which had successfully processed over 55 billion dollars in transactions by November 2025 [1].
The Eroding Reserve Status of the Greenback
This shifting dynamic in commodity markets is visibly eroding the natural bid underlying the U.S. dollar [1]. According to the International Monetary Fund, the dollar’s share of global foreign exchange reserves peaked at over 70 percent at the start of 1999 [1][2]. As of the third quarter of 2025, that share had fallen to roughly 57 percent, marking its lowest level since 1994 [1]. This represents an absolute decline of 14 percentage points over the period. The changing tide is further evidenced by central banks aggressively diversifying their holdings, having purchased over 1,000 tonnes of gold annually throughout 2022 and 2023 [2].
Strategic Rebalancing in Global Finance
The macroeconomic implications of a fully realized petroyuan extend deep into corporate treasury strategies and sovereign debt markets [1]. Historically, the petrodollar system ensured robust demand for U.S. Treasuries, a market that today exceeds 25 trillion dollars [2]. If Gulf states increasingly recycle their oil revenues into Chinese government bonds rather than U.S. debt, it could exert significant downward pressure on U.S. bond prices [1]. This trend is compounded by the fact that the United States transitioned into a net energy exporter between 2019 and 2021, inherently reducing its own reliance on Middle Eastern crude, while China now imports over 11 million barrels of crude oil per day [2].