On 16 September 2021, Thailand issued the Board of Investment Announcement of SAT No.Sor.6/2564, providing a selective tax concession for foreign investment in the manufacturing of semiconductors. 

The objective was to promote the potential and development of the country's competitiveness for businesses that used advanced technology and innovation.

The financial incentives were given in the form:

1. corporate income tax exemption up to 10 years to front-end semiconductor investments, such as in electronics design, silicon wafers, and wafer FAB;
2. corporate income tax exemption up to 8 years to back-end semiconductor investments, such as in wafer SORT, die bank, assembly, and integrated circuit testing; 
3. corporate income tax exemption up to 8 years to machinery investments in the advanced printed circuit board (PCB) manufacturing; and
4. corporate income tax exemption up to 5 years to machinery investments in printed circuit board assembly (PCBA).

The corporate income tax was reduced from 20% to 0%.

The regulation entered into force on 16 September 2021.