Asian FX: Diverging Central Bank Paths Shape THB, KRW, PHP – BBH

Asian foreign exchange markets are being deeply influenced by diverging central bank policy paths. BBH analyst Elias Haddad expects the Bank of Thailand to keep its benchmark interest rate at a low of 1.00%, keeping real yields negative, a policy stance that will continue to weigh on the Thai baht. Meanwhile, the Bank of Korea is seen as likely to further tighten monetary policy, raising rates to 3.00%, and given that its economic growth and inflation are both above target, this interest rate differential advantage is expected to support the Korean won.

**Thai Baht: The Dilemma of Negative Yields Under Low Rates**

The Bank of Thailand's accommodative stance is putting structural pressure on the baht. When the nominal rate stays at 1.00% while inflation remains high, real yields fall into negative territory, undermining the appeal of baht-denominated assets. Against the backdrop of widespread rate hikes among major global central banks, this policy divergence makes the baht's interest rate disadvantage particularly pronounced, with capital outflow pressures likely to persist. BBH's analysis directly notes that this negative real yield state will continue to drag on the baht's performance.

**Korean Won: Rate Hike Expectations Build Support**

The Bank of Korea's hawkish tilt is injecting momentum into the won. Markets expect it to push the policy rate further to 3.00%, underpinned by economic growth and inflation levels above target. Higher rates mean more attractive returns on won-denominated assets, drawing international capital inflows and supporting the won's exchange rate. As of the time of writing, the dollar-won pair is trading around 1383, reflecting markets digesting this policy divergence expectation.

**Trading Logic Under the Divergence Pattern**

This "fork" in policy paths provides a clear macro backdrop for FX trading. J.P. Morgan Asset Management has also previously noted that differences among Asian central banks in responding to energy shocks—regarding economic growth, price stability, and FX sensitivity—are driving their monetary policy stances toward divergence. Within this framework, going long on currencies with tightening policies and shorting those with steady or accommodative policies could become a phased strategy theme, with the baht and won serving as typical examples of this logic.