Jihad Azour, director of the IMF's Middle East and Central Asia Department, told reporters in Dubai that "this conflict has disrupted energy production, shipping, tourism, trade, and confidence."
Non-oil activity, a crucial indicator for businesses in the region, is expected to rebound to 4.5 percent growth in 2027 if the conflict is resolved.
The financial buffers that Gulf states have built up are weakening. The region's combined current-account surplus is expected to narrow to 1.3 percent of GDP, down from 5 percent last year. The combined fiscal deficit is projected to widen to 2.3 percent of GDP, from 0.8 percent, according to the IMF's estimates.
The impact varies significantly across the Gulf. Oman is the outlier, having implemented economic reforms before the war and remaining relatively unscathed by the conflict.
The worst-hit is Bahrain, the smallest Gulf oil exporter. Its debt levels now exceed 150 percent of GDP, and foreign reserves have dropped 50 percent since March. Asharq Bloomberg reports the kingdom is in talks for a cash infusion led by the United Arab Emirates.