Why Category 8.1 Matters
For a foreign-owned software company, BOI promotion under Category 8.1 (Digital Technology Business) resolves the two structural problems of doing business in Thailand at once. It permits the company to be wholly foreign-owned, overriding the 49% ceiling that would otherwise apply under the Foreign Business Act B.E. 2542 (1999), and it opens the BOI's own channel for the founder's and specialists' visas and digital work permits.
The category covers two activities: 8.1.1, the development of software, platforms for digital services, or digital content, and 8.1.2, the improvement of existing software or platforms. The distinction matters commercially. Development projects under 8.1.1 qualify for Group A2 incentives, including corporate income tax exemption of up to eight years, with the annual exemption cap calculated from the project's qualifying expenses: the incremental salaries of newly hired Thai IT personnel, temporary IT hire costs, IT training, and first-time certification costs such as ISO 29110 or CMMI. Improvement projects under 8.1.2 fall within Group B and receive non-tax incentives, including foreign ownership, but no corporate income tax exemption.
The Substance Test: Development in Thailand, by Your Own People
Two requirements decide most applications.
First, the development must take place in Thailand, and it must commence anew after the application is filed. A product built abroad and merely operated from Bangkok does not qualify. Where a company brings pre-developed software into the project, it must develop new and distinct functionality after applying for promotion. The BOI examines where and by whom the platform is genuinely designed, built and maintained, not only where it is sold.
Second, the project must spend at least THB 1.5 million per year on salaries of Thai IT personnel. This salary criterion replaces the general THB 1 million minimum investment rule that applies in most other BOI categories, and it is deliberately specific. The personnel must be on the applicant's own payroll, newly hired after the application is submitted, and their employment must be evidenced through the company's withholding tax filings (PND.1). Both permanent and temporary staff count; staff rehired within one year of leaving the same company do not. Qualifying roles include developers, programmers, system analysts, software engineers, testers, project managers and digital artists, and the BOI verifies qualifications through transcripts, work history or recognised certifications.
The practical consequence is the one that catches founders most often: outsourcing the build defeats the application.Fees paid to an external software house are not salaries of the applicant's Thai IT personnel. A company that contracts out its entire development, however genuine its business plan, has near-zero qualifying expenditure and no development process of its own in Thailand to show the officer.
What Does Not Qualify
The BOI's exclusion list under the current framework is equally decisive. Promotion is not granted for the sale of one's own goods or services through a platform, including wholesale, retail, transportation and lending activities; for websites that are not web applications; for consultancy; for software configuration, installation or maintenance of third-party products; for data analysis services that do not involve developing the analysis tools; or for software developed solely for internal use. Cosmetic improvements, such as user interface changes or adding a language, do not qualify as "improvement" under 8.1.2.
For marketplace and platform founders, this draws a critical line through the business model: the development of the platform can be promoted, while the trading activity conducted on it cannot. The tax exemption follows its own definition of eligible revenue. Income qualifying for corporate income tax exemption includes licenses, subscriptions, pay-per-use fees, in-app purchases, platform usage fees, contractual revenue sharing and in-app advertising derived from the promoted software, as well as development and related services. Commissions and income unrelated to the promoted software fall outside the exemption, so marketplace operators should structure and characterise their revenue streams with this line in mind.
Process and Timeline
The application may be filed before the company exists, in the name of the individual founder, who in practice is expected to take a shareholder or director role in the promoted company. The sequence runs: application through the BOI's e-Investment portal, a project presentation to a BOI officer, approval, acceptance of the resolution within one month (extendable three times), incorporation of the company and application for the promotion certificate within six months of acceptance (extendable), and issuance of the certificate within approximately ten working days of complete documents. In practice, filing to certificate typically takes three to four months. One deadline is unforgiving: the project must reach full operation within twelve months of the certificate, with no extensions.
Two further points affect planning. Thai law requires at least two shareholders at incorporation, so a solo founder needs a co-founder or investor holding at least one share. And under BOI Notification Por. 8/2568, foreign staff sponsored under the promotion are subject to minimum salary levels, THB 150,000 per month at executive level and THB 75,000 (or THB 50,000 with directly relevant qualifications) for managers, engineers and IT specialists, which a promoted company must actually be able to pay. These salary criteria apply to applications from 1 October 2025, and to previously promoted companies from 1 January 2026.
Practical Recommendations
Founders and investors approaching Category 8.1 should sequence the project in this order. Secure the funding first: the salary criterion, the incorporation capital and the foreign staff salary floors all assume money in the bank, and angel or venture funding is easier to close once promotion is approved, since applications may be filed before incorporation. Plan the Thai development team before filing, not after: the hiring plan is the substance of the application, and personnel hired before filing do not count toward the criterion. Structure the revenue model with the eligibility line in mind, separating income derived from the promoted software from commission and unrelated income. And treat the application narrative honestly: the BOI verifies operations through annual reporting and audits, and under Sections 54 and 55 of the Investment Promotion Act B.E. 2520 (1977), rights granted on the basis of conditions not met can be withdrawn with retroactive effect.
Conclusion
Category 8.1 remains the cleanest route to a wholly foreign-owned technology company in Thailand, and the incentives are substantial. But since the 2024 restructuring, the BOI promotes what a business genuinely is, not what an application says. Companies that build a real development operation in Thailand, on their own payroll, will find the process straightforward. Companies that hope to paper over an outsourced or offshore build will not. The time to get the structure right is before the application is filed, and the firm regularly assists founders and investors in doing exactly that.
Disclaimer: This publication is intended for general informational purposes only and does not constitute legal advice. The information contained herein should not be relied upon as a substitute for specific legal counsel. For advice tailored to your circumstances, please contact Dej-Udom & Associates directly.