Studies of international tourists' expenditures have used a variety of forecasting procedures to evaluate tourism economic phenomena. Forecasting methods have developed utilizing ARFIMA(p,d,q)-FIGARCH(p,d,q) approach, primarily because the forecasting concept alone is sufficient explanatory power to cover many important tourism economic phenomena, particularly those which possess an evolutionary statistical structure. The secondary data were used to produce forecasts of international tourists' expenditures based on the ARFIMA(1,-0.672,1)-FIGARCH(1,-0.180,1) method. The international tourists' expenditures in Thailand for the period of 2009-2010 may experience some decline. The publicprivate partnership should plan to provide a remarkable chance to convey simultaneously a mixture of parts of the industry and to establish major tourism course of action initiatives to set in motion to lay the foundation at the educational level to assist all stakeholders even if possible to initiate some of those measures necessary. [ABSTRACT FROM AUTHOR]