US warns shippers against paying Iran tolls for Hormuz Strait passage

On 2026-05-04, the U.S. Treasury’s Office of Foreign Assets Control warned shippers against paying tolls to Iran for passage through the Strait of Hormuz. The advisory said vessels or entities making such payments could face punitive sanctions, including if payments are framed as charitable donations. The warning was issued from Washington, D.C., and targeted Iran over the proposed tolls.