i think its under 20k US dollars, so no problem. the poster mentioned he has 500k Baht, but didn't specify if he is taking it out or in Thailand.. if taking out, the maximum is 50k baht except in certain borders/countries. so he need to declare it.
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Thai Currency
The amount of Thai currency, in a form of banknote or coin, allowed to be brought outside the country shall not exceed 50,000 THB. In the case where Thai currency is carried out to Thailand's boarding countries, Vietnam and Yunnan District of China, the total amount shall not exceed 2,000,000 THB. However, the Thai currency brought out to the said countries in the amount of 450,000-2,000,000 THB. shall be declared to the Customs officers at the Customs checkpoint.