Business set up by a minimum of 3 shareholders. The liability of shareholders is limited to the portion of the share capital remained unpaid.

Office of an overseas company established in Thailand in order to support the international customer and business. But this kind of business cannot generate revenue.

The Thailand Board of Investment (BOI) aims at facilitating foreign investments in Thailand, providing the opportunity to register a 100% foreign owned company. BOI promoted companies can benefit from certain incentives depending on their activity, such as tax exemption, employee quota exemption (4 Thai for 1 foreigner).

Liability of the shareholders is limited to any amount left unpaid on their shares. In this case there is a separation between shareholders and directors.

This kind of company is allowed to earn income. The Branch Office's liabilities arising from the action of the business in Thailand will not be limited within Thailand but extends to the head office overseas.

A sole proprietorship is a type of company owned and run by only one person with no legal distinction between the owner and the company, which means that the owner is responsible for his/her debts.

Due to this treaty Americans corporations are granted the same rights as a Thai company and including the right for a US national to own a company in Thailand.