Illegal. Illegal buying and selling of foreign exchange is an illegal and criminal act. That is, it is illegal for jewelry stores to accept Thai currency. Anyone who buys or sells foreign exchange privately, in disguised form or resells foreign exchange shall be given a warning by the foreign exchange administration, his illegal income shall be confiscated, and a fine of more than 30% and less than 3 times the amount of illegal foreign exchange shall be imposed. If a crime is constituted, criminal responsibility shall be investigated according to law.