A foreign founder who wants to sponsor their own work permit through a Thai company generally needs the company to meet minimum registered share capital requirements per foreign employee and to employ Thai nationals at a set ratio to foreign staff. That ratio is one of the structural considerations for solo founders and small teams setting up in Thailand, and it shapes almost every decision that follows, from how much capital to inject to whether a Board of Investment (BOI) promotion is worth pursuing instead of the standard route.
TL;DR
- Standard Non-B work permit sponsorship has registered share capital and Thai-to-foreign employee ratio requirements, with Thai staff needing to show consistent Social Security contributions before the company can apply.
- Rules governing which business activities foreigners can own are separate from rules governing staffing ratios needed to sponsor a work permit.
- BOI promotion can exempt qualifying companies from the standard ratio and capital rules, but it comes with its own eligibility criteria.
- Work permit sponsorship depends on the company maintaining the conditions that qualified it in the first place.
- Founders should confirm the correct application process for their situation, since requirements can vary by visa category and company structure.
About the Author: This article draws on Issa Compass's work guiding founders and employers through Thai visa and immigration requirements, informed by a real-time verification engine that tracks embassy and immigration-office rules across the country and immigration experts who review work permit cases daily.
What is the four-employee rule and why does it exist?
For standard Non-B work permits, Thai companies are generally required to employ Thai nationals, registered with Social Security, at a set ratio to the foreign employees they want to sponsor. This exists to tie foreign employment to genuine local job creation rather than shell companies formed purely to secure a visa. For a solo foreign founder, this means the company cannot simply register and apply. It needs a real operating structure: real Thai payroll, real Social Security contributions, and enough capital behind it to make the ratio credible to the Department of Employment.
Think of it less as a tax and more as a proof-of-substance test. Immigration officers are not just checking a box on a form, they are checking whether the company looks like it actually functions with the staff it claims to have. Consistent Social Security contributions maintained for a period before the company applies are part of what this rule is designed to verify.
What are the Thai business visa requirements for a foreign founder?
Thai business visa requirements for a founder sponsoring their own work permit center on the Non-Immigrant B (Non-B) visa, which is one entry visa category that allows a work permit holder to work in Thailand, plus the work permit itself, which is the separate authorization to actually work. Other visa types, such as the Non-O (Marriage) visa, LTR visa, and SMART visa, can also allow their holders to obtain a Thai work permit, so the Non-B is not the only route to work authorization. In any case, holding a work permit requires an eligible visa status, and the visa alone does not let you work.
On the company side, standard requirements for a Non-B work permit generally include specific figures for registered share capital per foreign employee and a required Thai-to-foreign employee ratio. Exact thresholds vary by visa category and company structure, so it is important to confirm the current requirements with a qualified advisor for your specific situation. Supporting documents typically include a company affidavit, shareholder list, VAT registration, and proof of the Thai employees' Social Security registration.
On the individual side, the founder submits a work permit application to the Department of Employment along with supporting personal and company documentation. For specific current figures and visa-category-specific requirements, consult Issa Compass or a qualified advisor.
Is the Foreign Business Act the same thing as the work permit ratio?
No, and this is one of the most common points of confusion for new founders. Rules governing foreign business ownership and rules governing work permit staffing requirements address two separate concerns, and conflating them leads to bad planning decisions.
Business activity restrictions under the Foreign Business Act govern which activities foreigners can engage in. Activities on List 1, such as agriculture and media, are closed to foreigners entirely. List 2 and List 3 activities, which cover most services, retail, and wholesale trade, require Thai majority ownership unless the company secures a Foreign Business License or a BOI promotion.
The work permit ratio, by contrast, has nothing to do with ownership percentage. A company's ownership structure and its ability to sponsor a foreign hire under work permit ratio and capital requirements are governed by different considerations. So a founder needs to clear two separate gates: first, confirm the business activity is one foreigners are permitted to run (or structure ownership/licensing so it is), and second, build the staffing and capital base needed to sponsor the work permit itself. Skipping either step in the planning phase is how founders end up stuck mid-registration.
Can BOI promotion get around the four-employee rule?
Yes, in many cases. Companies promoted by the Board of Investment are generally exempt from the standard Thai-to-foreign employee ratio and registered share capital requirements for approved foreign experts. This is why BOI promotion is often the more realistic path for solo founders or small teams who cannot yet justify hiring the number of Thai staff required under the standard route. For current BOI eligibility and process details, consult a qualified advisor who specializes in BOI promotion.
Founders weighing BOI promotion against a standard Non-B setup should treat it as a genuine fork in the road rather than a default upgrade. BOI applications carry their own eligibility criteria tied to industry and investment size, and not every business qualifies. For founders exploring long-term options beyond the standard Non-B route, it is worth reviewing the fuller range of Thai visa options and eligibility before committing to a structure.
How does work permit renewal in Thailand actually work?
Work permit sponsorship depends on the company continuing to meet the conditions that supported its initial approval. Founders should plan for ongoing compliance rather than treating approval as a one-time event, and should confirm current renewal requirements with a qualified advisor as their situation evolves.
Building compliance into ongoing HR planning, rather than addressing it only at renewal time, is generally the safer approach for founders relying on staff-based sponsorship.
Founders whose companies operate across more than one office or branch should confirm with a qualified advisor how their visa and work permit application should be structured for their specific situation, since requirements can vary. This is worth planning for early, since restructuring sponsorship after the fact is more work than setting it up correctly from the start.
Frequently Asked Questions
Do I need Thai employees before I can even apply?
For the standard Non-B route, the company generally needs Thai nationals registered with Social Security before it can sponsor a foreign work permit under the standard ratio. For exact current requirements, consult Issa Compass or a qualified advisor, as requirements vary by visa category.
Does the Foreign Business Act stop me from owning my own company?
Not necessarily. It restricts foreign ownership on certain activity categories (List 1 through 3) and generally caps foreign ownership at 49 percent for restricted activities unless you secure a Foreign Business License or BOI promotion. Whether it applies depends entirely on your specific business activity.
Can I skip the four-employee rule with a BOI promotion?
Often yes, for approved foreign experts at BOI-promoted companies, which are generally exempt from the standard employee ratio requirement. Confirm current eligibility with a qualified advisor.
How long does the work permit process take?
Processing times can vary depending on the visa category, company structure, and whether the company is BOI-promoted. It is best to confirm current timelines with a qualified advisor.
Is the capital requirement per employee or a one-time company total?
Requirements are generally structured per foreign employee, though the specific amount depends on the visa category and company structure. Confirm exact figures with a qualified advisor.
What happens if my Thai staff count drops after renewal?
Sponsorship generally depends on the company continuing to meet the same conditions that supported its initial approval, so changes in Thai headcount could affect ongoing eligibility. Confirm specifics with a qualified advisor.
Does Issa Compass handle Non-B and work permit applications?
For specific information about current service offerings and eligibility, consult Issa Compass directly or visit the platform for details on which visa and work permit services are available.
About Issa Compass
Issa Compass is a real-time visa platform that helps founders, employees, and families work through Thai visa and immigration requirements using a decision engine trained on real-time embassy requirements, backed by immigration experts and a legal team. The platform supports a range of visa and work permit routes for individuals and businesses. For current information on which specific services are available, including Non-B and work permit support, visit Issa Compass or contact the team directly. The platform is not a government agency, and its money-back guarantee applies to Full Service applications pre-qualified by Issa's legal team, refunding the Issa service fee under Issa's published terms if a pre-qualified application is not approved, subject to exclusions detailed in Issa's published terms. Government and embassy fees are never refunded under this guarantee.
If you are weighing a Non-B setup, a BOI application, or simply trying to work out which Thai visa route fits your situation, you can explore your options or get in touch through Issa Compass to start the conversation.
