US-Iran deal delivers $300 billion controversy, reconstruction questions

Few would have predicted that Iran's disastrous 2026 could end with the prospect of a massive financial windfall. The deal reached by Washington and Tehran in June, aimed at ending the US-Israel-Iran war, has the potential to deliver just that — marking a stunning reversal in a year that began with Iran facing explosive unrest before quickly descending into a conflict that killed thousands and caused widespread destruction.

Yet now, under the agreement signed by President Donald Trump on June 17, Iran stands to receive sweeping sanctions relief, renewed oil sales, access to frozen assets abroad and perhaps the most controversial incentive of all: a proposed $300 billion investment fund intended to finance reconstruction and economic development in Iran.

The fund, details of which first emerged in May, has sparked widespread backlash amid broader criticism of the deal, including outcry from within Trump’s own party. This has put the administration on the defensive, as the White House has stressed it won’t commit US money to the fund while arguing that economic incentives will help secure a lasting settlement that sees Iran dismantle its nuclear program. 

Beyond political skepticism lies a more practical question: Is the creation of such an investment vehicle even feasible, and how much difference would it actually make for Iran's reconstruction and economic recovery?

Headline number

The memorandum of understanding commits the United States and regional partners to developing a "definitive," mutually agreed upon plan involving at least $300 billion for Iran's reconstruction and economic development, with implementation details to be finalized during a 60-day negotiating period.

This proposal, however, remains shrouded in uncertainty and mixed messages. “The terminology around this is so ambiguous you really could read anything into it,” Richard Nephew, a former US deputy special envoy for Iran now at Columbia University, told Al-Monitor.

After first denying reports of the massive fund, Trump later said only that the United States wouldn’t contribute to it. “We’re not putting up 10 cents,” he said. Meanwhile, Vice President JD Vance has claimed that Gulf states will back the investment vehicle, despite regional governments having publicly avoided making commitments. 

According to a Reuters report citing an unnamed source familiar with the negotiations, the proposed vehicle will function as a private investment fund rather than a government-funded reconstruction program, and more than half of the $300 billion has already been committed by companies based in the United States, the Gulf, Asia, South America and Africa. 

The fund reportedly would target sectors including energy, transportation, logistics and manufacturing and would become operational only after a final agreement is reached. Reuters also reported that Iran initially sought roughly $400 billion in compensation for war damages and Washington rejected the idea.

Reality check

The fund’s size has understandably generated many headlines. But a more important issue may be whether conditions exist for such investment to materialize at all while the outlook for reconstruction is still murky.

According to Mahdi Ghodsi, a senior economist at the Vienna Institute for International Economic Studies, such a fund is unlikely to materialize until major political and security risks are addressed as part of a durable settlement based on stepwise and verifiable compliance. “Until a credible and enforceable agreement is in place, Iran will remain a highly risky environment for investment,” he told Al-Monitor.

The current memorandum isn’t a final deal but a framework establishing a negotiation timeline to tackle Iran's nuclear program, sanctions relief and regional security issues. That window may not produce an accord and could be extended. The Trump administration could also choose to resume military action — for example, once the US midterm elections in November conclude and ease immediate political pressure in Washington. 

Hours before signing the pact on Wednesday, Trump himself cast uncertainty about a broader settlement. "It’s not final. It's a memorandum of understanding. And if I don't like it, we'll go back to shooting at them, dropping bombs on their head,” Trump said on the sidelines of the G7 summit. 

Even if a $300 billion fund is successfully created and eventually deployed, Ghodsi noted that expectations should be tempered, as the Central Bank of Iran has said the damage caused by the war amounted to around $270 billion. Therefore, the proposed fund “would largely be sufficient only to reconstruct the damage and return Iran to prewar conditions,” said the economist.

That doesn't mean the proposal lacks significance. Iran has spent decades largely cut off from global capital markets thanks to sanctions and political isolation. Foreign direct investment has remained scarce despite the country's large population, industrial base and vast energy resources. The symbolism of international investors once again considering Iran could matter as much as the fund itself.

Beyond the fund

Broader economic incentives embedded in the agreement are positioned to prove more consequential than the proposed investment fund in the near term. Under the memorandum, Iran would gain immediate relief from restrictions on oil exports through US waivers, while negotiations continue toward lifting wider sanctions. The pact also envisions restoring access to frozen Iranian assets held abroad, potentially worth up to $100 billion.

Those measures would deliver economic benefits far more quickly than any large-scale investment program. Ghodsi noted that access to frozen assets could help stabilize the Iranian rial and reduce inflationary pressures that have long battered consumers, but longer-term benefits also cannot be discounted. A full US-Iran agreement, he said, “could be followed by much larger foreign direct investment from the West, the European Union, China and other countries, going beyond the $300 billion earmarked for reconstruction.”

That possibility recalls the period following the 2015 nuclear agreement brokered by the Obama administration, when international companies explored opportunities in Iran before Trump's withdrawal from the accord in 2018 reversed that momentum. Should stability return, potential investment opportunities in Iran remain substantial — spanning infrastructure modernization, energy development, transportation corridors, industrial projects, agriculture and critical minerals.

But those possibilities come with familiar limitations, including scope for ongoing corruption, which has long distorted the country’s economy. Investors will seek legal protections, functioning financial channels and confidence that future sanctions will not abruptly return. Whether that promise becomes reality now depends on high-stakes negotiations this summer and future reforms and internal changes. 

“The regime would need to transform itself into a reform-oriented entity capable of enabling a suitable business environment, supporting sustainable development, improving institutional quality and raising the living standards of its citizens,” said Ghodsi. “This would require distancing itself from the ideologies of the past. Otherwise, the vicious cycle of ideology-driven and poorly designed policies could once again derail Iran’s development.”