Is the trade reroute becoming a currency reroute?

Could we see an erosion in the petrodollar’s dominance? Regional disruptions have turned what used to be a slow, policy-driven conversation about dedollarization into a live market event, with currencies now competing for barrels in real time.

Why this matters: The war is accelerating a shift that was already underway — from a single-currency system to a multi-currency one. Even limited adoption of alternative currencies in oil trade weakens the USD’s role, not just as a payment tool, but as the default financial rail underpinning global energy trade.

BACKGROUND- The petrodollar system dates back to the 1970s, when the US secured an agreement with Saudi Arabia — and by extension, Opec — to price oil exclusively in USD in exchange for security assurances, effectively anchoring global demand for the currency. That system still dominates, with roughly 80% of global oil trade settled in USD. But the underlying flows have shifted, with Saudi exports to China now significantly exceeding flows to the US.

The eastward shift: While the war may be a catalyst, the structural realities of the global oil trade had already shifted eastward long before the first missile was fired. The customer base for Gulf crude has changed as the US is now effectively energy independent following rapid advances in shale oil production.

Cracks in the barrels: That mismatch — between pricing currency and trade reality — is where cracks are forming. China has spent years trying to internationalize the CNY, with limited success in energy markets. Now the war is doing the heavy lifting.

The trigger

Hormuz is becoming a gatekeeper for currency, not just cargo: Reports that Iran may allow vessels through the strait only if payments are settled in CNY signal a shift from physical control to financial leverage. China is already the largest buyer of Iranian crude, meaning the demand side is aligned with the currency shift.

This is how the “petroyuan” stops being a narrative and starts being a mechanism. A note (pdf) by Deutsche Bank framed the conflict as a trigger point, where the petrodollar begins to erode and a parallel system starts to emerge. If access to supply is conditioned on currency, buyers adjust.

The irony: “Even if just a fraction of transactions switches currency, the irony will be stark: A US-launched war will help normalize non-USD energy sales, succeeding where years of Chinese diplomacy have not,” said Agathe Demarais, a senior policy fellow at the European Council on Foreign Relations.

The mechanism

India is where this shift becomes operational: Indian refiners are increasingly settling Russian oil purchases using alternative currencies such as CNY and the UAE’s AED. Indian INRs are deposited into offshore accounts, then converted into AEDs or CNYs — a multi-step workaround designed to bypass USD exposure.

On the supply side, Russia is making its position explicit. After the US recently issued a sanctions waiver on Russian oil imports, the Russian deputy energy minister said Moscow will continue supplying energy at market prices using “mutually accepted payment practices” — effectively signaling non-USD settlement when needed.

Even US allies are starting to adapt, with Washington’s blessing: South Korea has secured approval from the US to pay for Russian petroleum products, including naphtha, in non-USD currencies without triggering secondary sanctions.

This is how fragmentation begins: Each waiver, workaround, and bilateral arrangement chips away at the USD’s exclusivity. None of these moves individually dethrones the petrodollar — but collectively, they create a parallel system that didn’t scale before.

System impacts + limits

The implications are bigger than oil — they hit the core of how global markets are structured. If even a fraction of the oil trade shifts into other currencies, the effects ripple into reserves, bond markets, and trade balances. The USD’s role isn’t just transactional — it underpins global savings and pricing systems. A move toward multi-currency energy trade would dilute that foundation.

But the alternative isn’t ready to fully take over — and that’s where the friction sits. The CNY is not freely convertible and isn’t widely held as a reserve asset, which creates operational constraints for buyers (that’s why India did that workaround). A shift away from the USD introduces some kind of volatility — not just in currencies, but in financing, hedging, and trade settlement. Surely markets can adapt (as they always do) but not instantly.

A clean replacement? Or a split system? Instead of a single dominant currency, energy trade starts to split across multiple rails — USD, CNY, and other regional currencies as the AED, Singapore’s SGD, and Hong Kong’s HKD. Gulf states are already testing this direction through projects like mBridge, exploring alternatives to USD-based payment systems.

The real shift is structural: No major player is abandoning the USD outright, but more of them are building the option not to use it, and that’s enough to change how the system behaves. The petrodollar’s strength was never just dominance — it was a lack of alternatives.

What this means

The signal: The petrodollar isn’t ending — it is, however, losing its monopoly. What replaces it isn’t a clear handover to the CNY, but a split system where currency becomes another lever in the energy trade.

What to look for: The exceptions, the waivers, the bilateral agreements, and the currency-linked trade conditions. If they scale, they don’t just bypass the greenback — they redefine how energy is paid for.