A preliminary framework agreement between the United States and Iran to end their conflict and reopen the strategic Strait of Hormuz includes a controversial new toll system for maritime traffic, according to reports from Tehran.

The terms, which mandate a 60-day toll-free window before fees become payable, add a complex economic layer to the geopolitical ceasefire and signal that the chokepoint's operational normalcy remains far from guaranteed.

The revelation has kept energy markets on edge, as traders weigh the potential for new friction points in the world's most critical oil transit route.

While the broader framework deal initially sparked relief among investors, the specific details regarding toll collection suggest that the US and Iran are still negotiating the practicalities of post-war access.

This ambiguity prevents a full unwinding of the geopolitical risk premium that has been supporting crude prices.

The development follows weeks of intense negotiations aimed at de-escalating hostilities.