Thailand’s September CPI rose 2.8% year-on-year versus a 3.1% Bloomberg consensus and 2.5% in August, the highest reading since April and near the upper end of the Bank of Thailand’s 1–3% target band. The Commerce Ministry cut its 2026 inflation forecast to 1.8–2.2% from 1.5–2.5%, with year-to-date inflation averaging about 1.5%. The pickup was attributed to higher energy and food prices, with supply-side pressures expected to persist into year-end as fuel stays elevated on energy supply chain disruptions and food costs rise after flood-related crop damage.
Policy implications were limited, with inflation described as largely supply-driven while core inflation and medium-term inflation expectations remain contained, supporting an extended hold in the policy rate at 1.00%. In FX markets, USD/THB fell 0.2% to 33.62, helped by easing oil prices and a softer US dollar. Even so, downside risks for the baht were framed as elevated as the 10-year US Treasury versus 10-year Thai government bond yield spread widened to 291 bps, the widest in a year, reducing the appeal of THB-denominated assets.
Baht Outlook Amid Persistent Inflation
We are closely monitoring the Thai Baht as the latest September inflation data reached 2.8%, driven mostly by high energy costs and food prices from recent flooding. Despite this spike, the Bank of Thailand is expected to keep its benchmark interest rate steady at 1.00% because demand-side pressures remain very weak. This policy divergence is highly likely to keep the local currency under pressure in the coming weeks.
Yield Spread Risks and Trading Strategy
We see a significant risk for the Baht due to the widening yield spread between 10-year US Treasuries and 10-year Thai government bonds, which recently reached 291 basis points. This is the widest gap we have seen in over a year, which naturally diverts global capital away from Thai assets and toward the higher-yielding US dollar. Historically, when this yield spread widens past 250 basis points, the Baht experiences sustained downward pressure against major currencies.
For derivative traders, we recommend positioning for a rebound in the USD/THB exchange rate, which recently dipped to a temporary low of 33.62. Utilizing short-term call options on USD/THB or entering long positions on futures contracts can help capture the expected upward movement as the Baht weakens. We also advise setting tight stop-loss limits to manage potential volatility from unpredictable global energy prices.
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