@Bryn *******
only under one condition, and that is being an American citizen and setting up the business under the Treaty of Amity, but, you would still be required to meet the financial requirement within one year of having at least bt2million in registered capital. There is a division of the US embassy that can help you, but it is pretty involved. Other than that you can not just start a business in Thailand by yourself, and you can not own more than 49% of the business. You still need at least bt2million, and at least 4 Thai employees you pay social security on, but let me backtrack a little. You can start a business without all that, you just can not get a type B visa extension, or the required work permit without the registered capital, and the employees. There are different requirements when starting a company through the BOI, Board of Investment, but, that requires having a business also in your home country, and still requires a financial investment in registered capital.