Iran has immediately suspended a 10% levy on foreign-flagged vessels transporting oil, gas and liquid petroleum products to and from the country. The order, effective September 10, 2026, was issued by the presidential legal deputy and is intended to reduce operating costs for carriers navigating heightened maritime risks. The suspension covers energy cargoes entering or leaving Iranian ports, although an official list of eligible products has yet to be published and no companies or vessels were named. The move comes as a U.S. naval blockade has constrained Iranian seaborne energy exports and as Tehran establishes shipping corridors and restricted zones around the Strait of Hormuz, through which roughly one-fifth of global oil supply passes daily. A June 2026 Islamabad Memorandum signed by U.S. President Trump and Iranian President Pezeshkian proposed a temporary 60-day toll-free period linked to a ceasefire extension, but underlying disputes remain unresolved. The fee cut may not overcome sanctions enforcement, insurance constraints or the risk of exclusion from the U.S. financial system. Markets are watching for the product list and possible responses from the U.S. Treasury or State Department; existing market pricing put the probability of Iran imposing Strait transit fees by October 31 at 11.5% on the YES side.