All foreigners who apply for Tourist Visa at the Royal Thai Embassies and the Royal Thai Consulates-General worldwide, including eligible foreigners who apply for Visa on Arrival at designated checkpoints, will be exempted from Tourist Visa fee from 25 June B.E. 2552 (2009) to 4 March B.E. 2553 (2010). Such arrangement is for Tourist Visa only.
http://www.mfa.go.th