Reliance’s reported 5 million barrel deal revives an old workaround
When news broke that an Indian giant had scooped up 5 million barrels of Iranian crude after sanctions were lifted, the headlines were dramatic. India’s first Iranian oil purchase since 2019, worth hundreds of millions of dollars. But behind the headlines lies a puzzle: Iran is still cut off from Swift, the global banking network. So how does the money actually move?
Swift: The Missing Link
Swift — the Society for Worldwide Interbank Financial Telecommunication — isn’t a payment system itself. It’s a secure messaging network connecting 11,000 banks across 200 countries. Without Swift, a country loses its ability to conduct normal international banking.
Iran was disconnected in 2012, briefly reconnected in 2016, then cut off again in 2018. That means no easy access to dollars or euros for its oil exports.
India’s Ingenious Workaround
Enter UCO Bank, a state-owned lender in Kolkata. Back in 2012, India and Iran devised the rupee payment mechanism:
- Indian refiners deposit rupees into special vostro accounts held by Iranian banks at UCO Bank.
- The money never leaves India.
- Iran spends those rupees on Indian goods — rice, medicines, machinery.
It’s essentially a barter system disguised as banking, allowing trade to continue without touching the US-dominated dollar system.
At one point, over $3 billion worth of rupees piled up in these accounts. UCO Bank’s assets surged 30% after becoming the designated channel.
The Catch
- Rupee isn’t freely convertible → Iran can only buy what India produces.
- Currency risk → If the rupee weakens, Iran loses value. In 2013, Iran briefly stopped accepting rupee payments after a sharp depreciation.
- Insurance & shipping complications → Even with waivers, refiners hesitate without clear government guidance.
The Current Dilemma
With the US issuing a 30-day waiver for Iranian oil purchases, traders are offering crude at a $6–7 premium over Brent. Some are willing to accept rupees, others demand dollars. But with Swift still off-limits, the old Kolkata mechanism may be the only viable option.
Meanwhile, other nations are exploring alternatives to Swift — China’s CIPS, Russia’s SPFS — but for India and Iran, the solution remains simple: rupee accounts, UCO Bank, and a lot of rice and medicine flowing the other way.
Final Takeaway
This isn’t just about barrels of oil. It’s about financial ingenuity under pressure. When sanctions cut off the world’s banking lifeline, India and Iran built their own.
“It looks like banking. It feels like trade. But at its core, it’s barter dressed up in rupees.”
The Reliance deal may be India’s first Iranian oil purchase in years, but the real story is how money moves when the world’s financial plumbing is shut off.

