Iran war strains Gulf capital flows, tightens global liquidity
Gulf lenders are bracing for higher funding costs as war-driven inflation and energy shocks bite, while GCC investors face a temporary pullback in cross-border outflows.
Mar 28, 2026, 3:44 AM EDT
Why it matters:
- The Gulf is a major source of global capital; any slowdown in its outward flows can tighten liquidity, lift borrowing costs, and shift funding across markets.
Driving the news:
- Gulf banks are facing higher capital costs as the war in Iran weighs on regional economies and funding conditions. - Central banks are caught in a policy trap: energy-driven inflation is rising just as growth momentum fades, complicating rate decisions. - The Federal Reserve is holding rates steady and “looking through” the oil shock, but officials warn inflation expectations must be closely watched.
The big picture:
- GCC countries have grown into a consequential force in global finance, investing widely across asset classes and geographies. - A war-driven surge in energy prices and geopolitical risk can temporarily reduce GCC capital available for international markets, even if long-term positions remain intact.
By the numbers:
- Oil prices have surged more than 50% since the conflict began, with Brent up roughly 50% and WTI up about 40% in the first month. - The two-year U.S. Treasury yield has risen about 25 basis points over the past month as markets push back the timing of rate cuts. - The Fed’s benchmark rate is in a 3.5%–3.75% range, with officials expected to keep it unchanged while reassessing the outlook.
What they're saying:
- “The timing of the conflict could hardly be more complicated for global central banks.” — Capital analyst Daniela Hathorn - “Looking 12 to 18 months out, there's still not enough clarity to think that monetary policy itself should adjust in response to what's happened.” — Fed Gov. Stephen Miran - “You have to carefully monitor inflation expectations, because a series of these supply shocks can lead the public, businesses and households to start expecting higher inflation over time.” — Fed Chair Jerome Powell
Reality check:
- Oil shocks often lift headline inflation but may not pass through to core inflation unless expectations become unanchored or a wage-price spiral takes hold. - Some Fed officials argue the central bank should not “look through” the shock given inflation has been above target for years.
What to watch:
- Fed, ECB, Bank of England, and Swiss National Bank policy meetings this week as markets reassess rate paths. - Whether longer-term inflation expectations rise above the Fed’s 2% target, which would force tighter policy. - Any visible pullback in GCC cross-border investment flows and its impact on global liquidity and funding conditions.
The bottom line:
- The Iran war is tightening global liquidity and complicating central bank decisions, with Gulf capital flows a key variable to watch.