Estimates for the cost of living in Thailand generally say it's between 30% and 40% cheaper than living in the U.S. According to Numbeo, a site that collects cost of living data from around the world, the average cost of living in Thailand is roughly 34% lower than the average cost of living in the U.S. Rents are 63% lower, and restaurant prices are 47% lower in Thailand than they are in the U.S.