Thai baht jumped 1.91 per cent at the open. At 8.26am, the Thai currency was traded at 31.08 per US dollar. At the level, it was 3.44 per cent higher from the closing at the end of August.
It further strengthened to 30.96-98.
Compared to the previous closing, the baht also rose 0.68 per cent against euro to 42.0015 and 1.17 per cent against Japanese yen to 31.64 per 100 yen.
The Thailand Futures Exchange (TFEX) on Thursday morning temporarily halted the trading of the dollar futures, as the price decreased by 2 per cent from the latest settlement price.
The circuit breaker was turned on at 9.47am. The trading was halted for 30 minutes.
The price limit was also expanded to no more than plus or minus 4 per cent of the latest settlement price.
Local gold price was also raised by Bt450 per baht weight at 9.33am, bringing the gold bar price to Bt20,000. Spot gold price jumped to US$1,362.50 an ounce.
The Stock Exchange of Thailand index also opened 46 points or 3.31 per cent higher, bringing the index to 1,485 points. At the close, the market gained 49.93 points or 3.47 per cent to 1,489.06, on brisk turnover of Bt82.7 billion.
The Federal Reserve's decision means that liquidity worth US$85 billion would be injected to the market every month.