Iran exports oil, gas and other goods including petrochemicals, plastics and agricultural products by sea. Analysts say the US naval blockade of its ports, including in the Strait of Hormuz, could therefore affect this trade.

Soon after the start of the US-Israel war on Iran on February 28, authorities in Tehran implemented the effective closure of the Strait of Hormuz, the only waterway out of the Gulf, through which 20 percent of the world’s oil and liquefied natural gas (LNG) supplies were shipped from Gulf producers in peacetime.

The near-shutdown of the vital chokepoint sent global oil and gas prices soaring, and since then, Iran has controlled the strait. However, it has continued to export its own energy products through the waterway.

Iran’s oil exports through the Strait of Hormuz account for about 80 percent of its total oil exports. According to Kpler, a trade intelligence firm, Iran exported 1.84 million barrels per day (bpd) of crude oil in March and has shipped 1.71 million bpd so far in April, compared with an average of 1.68 million bpd in 2025.

From March 15 to April 14, it exported 55.22 million barrels of oil. The price per barrel of Iranian oil – across its three major variants, known as Iranian light, Iranian heavy and Forozan blend – has not fallen below $90 per barrel over the past month. On many days, the price has surpassed $100 a barrel.

Even at the conservative estimate of $90 a barrel, Iran has earned at least $4.97bn over the past month from its ongoing oil exports.

By contrast, in early February before the war started, Iran was earning about $115m a day from its crude oil exports, or $3.45bn in a month.