Iran Under Comprehensive Sanctions — How Does It Affect Your Costs?

Targeted sanctions focus on specific individuals, companies, or sectors. They have limited market impact but can disrupt supply chains. Sectoral sanctions block entire industries (e.g., Russian oil, Iranian banking), causing 10-20% price spikes. Comprehensive sanctions broadly restrict trade and finance, driving 25-45% commodity increases and significant portfolio drawdowns.

US sanctions on Iran began after the 1979 hostage crisis. Key milestones: 1995 comprehensive trade embargo; 2010 financial sanctions; 2015 JCPOA relief; 2018 US withdrawal and re-imposition. Each escalation pushed oil prices higher. As of 2026, expanded sanctions amid US-Israel strikes have renewed supply concerns and compliance obligations for global businesses.

After the invasion of Ukraine, Western sanctions on Russia removed ~3M bpd of oil from markets, pushed Brent above $120, and triggered -25% drawdowns in Russian-linked assets. European gas prices spiked 300%+. Key lesson: comprehensive sanctions on major commodity exporters cause sharp, sustained price increases and require costly supply diversification.

Iran and Russia together represent ~15% of global oil supply. Sanctions remove barrels from the market, tightening supply. OPEC+ spare capacity, strategic reserves, and alternative suppliers (e.g., Saudi, UAE) can partially offset. Historical oil spikes during sanctions: Iran 1979 +80%, Iraq 1990 +50%, Russia 2022 +40%.

Secondary sanctions threaten non-US entities that transact with sanctioned parties. A European company buying Iranian oil can lose access to US banks and dollar clearing. This "extraterritorial" reach forces global compliance. Banks spend billions on screening; businesses face $5K-$50K+ annual compliance costs. Iran and Russia comprehensive regimes carry the highest secondary risk.

OFAC (Office of Foreign Assets Control) administers US sanctions. Businesses must screen counterparties against SDN and other lists. Violations can mean fines, debarment, and criminal charges. Small businesses often spend $5K+/year on compliance; larger firms $50K+. Due diligence, training, and transaction monitoring are essential for any international trade.

Sanctions disrupt FX flows. Sanctioned countries lose dollar access; their currencies depreciate. Trade partners face payment bottlenecks. The dollar's dominance in sanctions enforcement has accelerated de-dollarization efforts: bilateral swaps, alternative payment systems (CIPS, SPFS), and commodity-backed trade. Currency impact scales with trade share and sanction severity.

Most sanction regimes include humanitarian carve-outs for food, medicine, and essential supplies. OFAC licenses allow specific transactions. NGOs and aid groups must navigate complex rules. Overly broad sanctions can inadvertently harm civilians; exemptions aim to balance pressure with basic needs. Compliance still requires due diligence even for exempt categories.

Weaponization of the dollar through sanctions has incentivized alternatives. China promotes yuan settlement; Russia uses rubles and partner currencies. BRICS+ explores a common payment unit. Commodity-backed trade (oil for gold) bypasses dollar clearing. Long-term, overuse of financial sanctions may erode dollar dominance, though transition is gradual. The dollar remains ~60% of global reserves.