Reviewed by ThaiLawOnline, a licensed Thai law firm practising in Thailand since 2006. Thai lawyer of record: Wichuda Atthamethakon, LL.M., Thai Bar Licence 3149/2556.
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Foreign founders in Thailand often ask the same question: Can I work through my own company, and which visa/work route fits? There is no single “best” answer. The practical choice usually sits among three paths: (A) self-sponsor a work permit through your own Thai limited company with a Non-Immigrant B stay; (B) structure under BOI promotion; or (C) qualify for the current Smart S startup track under BOI Por. 5/2568.
This guide maps who each path fits, the main friction, and where to dig deeper on ThaiLawOnline. It is general information, not a legal opinion for your file. Thai rules and practice change; confirm before you commit capital or start work.
Who this comparison is for (and who it is not)
Lead rule: Owning shares or sitting on a board does not by itself authorise work in Thailand. Under the Emergency Decree on Managing the Work of Foreigners B.E. 2560 section 8, a foreigner generally must not work without a work permit (or a statutory exemption such as an approved Smart S activity).
Day-to-day management (signing contracts, directing staff, running operations) is treated as work. Whether purely passive attendance at board meetings requires a permit is fact-specific. Do not treat an informal “board-meeting-only” story as a safe loophole.
This article is for founders and directors who intend to build or run a Thai company and need a lawful stay-and-work combination. It is not aimed at tourists, or at people whose only plan is remote work from Thailand under DTV / LTR-style programmes. Those routes differ from founding and working locally; see our legal guide for digital nomads in Thailand.
Three founder paths at a glance
| Path | One-sentence filter |
|---|---|
| A: Own Thai Ltd → Non-B → self-sponsored WP | Fits founders whose activity is not BOI/Smart-eligible and who can fund paid-up capital, a real office, and genuine Thai payroll. |
| B: BOI-promoted company | Fits promoted activities where you need a 100% ownership path (List 2/3), incentives, land permission potential, or multi-foreign hiring outside the ordinary DOE package. |
| C: Smart S (Por. 5/2568) | Fits certified targeted-industry startup founders who meet equity/director + deposit gates and want WP-light stay for endorsed activity only. |
Deep links for each path: self-sponsoring a work permit through your own company, BOI promotion benefits and application, and setting up a Thai company as a foreigner (FBA / 2026 rules).
Side-by-side comparison
The table below is a decision map, not a guarantee of approval. Cells that turn on officer practice are labelled accordingly.
| Dimension | Self-sponsored WP (own Co / Non-B) | BOI-promoted path | Smart S (current) |
|---|---|---|---|
| Visa / WP linkage | Non-B stay + separate WP tied to employer, position, and place; annual extensions usually need both valid. | Visa + WP via BOI Single Window / TIESC channel, not the ordinary DOE capital/4:1 package. Published SW targets are several working days per step when docs are complete, not same-day guaranteed. | Work in endorsed Smart S activities without a traditional WP. |
| Capital / staff | ~2M THB paid-up registered capital per foreign WP; often 1M if the applicant has a lawfully registered Thai spouse (that spouse’s permit only); general ceiling 10 foreigners unless one of four exception tests in DOE Reg. B.E. 2547 ข้อ ๕(๓) (CIT ≥3M / export FX ≥30M / tourism ≥5,000 visitors / ≥100 Thai employees). The one-year stay extension requires 4 Thai employees per foreigner (item 2.1(5) of the criteria annexed to Immigration Bureau Order 12/2568); how long they must have been on social security before filing is office practice, often said to be about 3 months, so confirm at filing. | Ordinary DOE 2M/4:1 package generally not the BOI filing route. BOI still applies own position-approval and (for larger manufacturing under Por. 8/2568) Thai-employment proportion rules, so BOI promotion does not remove Thai staffing requirements. Min investment often from ~1M excl. land/working capital, activity-dependent. | Gates: certified targeted-industry startup; ≥25% equity or director; bank deposit ≥600,000 THB (+180,000/dependent) held ≥3 months; health insurance. |
| Ownership | Company ≥50% foreign-owned = “foreigner” under FBA s.4 → List restrictions. Nominees → s.36 criminal exposure. | Promotion can open FBA s.12 certificate route for List 2 or 3 only, not List 1. | Does not by itself rewrite FBA ownership; sits on qualifying startup / endorsement. |
| Timeline | Illustrative practice only: company setup weeks; staffing seasoning often cited; WP/Non-B office timelines vary, not statutory SLAs. | Prep then BOI evaluation targets often ~40 / 60 / 90 working days by investment size after complete docs; then SW steps. | Endorsement + Smart S application; visa up to 2 years, renewable (not “up to 4 years” for new apps). |
| Land | No special foreign land ownership from WP alone. | Permission to own land for promoted ops possible where paid-up capital ≥50M THB and current BOI office/residence criteria met (Ann. 16/2567 / Por. 8/2567), not automatic. | No land benefit from Smart S alone. |
| Tax / incentives | Ordinary CIT generally 20%. SME reduced schedule only if both paid-up capital ≤5M and revenue ≤30M (plus RD continuity conditions). | Activity-group dependent CIT exemptions commonly ~3 to 8 years basic bands; some tracks/merit longer (limited cases toward ~13); match exact activity on live BOI list. | Immigration/work facilitation for qualified Smart S profiles, not a full BOI tax-holiday substitute. |
| Spouse / dependents | N/A as path privilege; spouse who works needs own authorisation unless another exemption applies. | Dependent visa because spouse works for a BOI-promoted company does not automatically authorise the dependent to work; generally needs own WP. | Qualifying Smart S spouse may be permitted to work without a separate traditional WP under Por. 5/2568, a privilege of the Smart track only. |
| Who it fits | Founders whose activity is not BOI/Smart S-eligible; genuine structure; willing to fund capital + real Thai payroll + office. | Promoted activities needing 100% ownership path, land permission, incentives, or multi-foreign hiring outside ordinary DOE package. | Certified targeted-industry startup founders meeting equity/director + deposit gates who want WP-light stay for endorsed activity. |
| Main friction | Capital + staffing practice + FBA ceiling; office/VAT/SSO; annual WP-visa linkage; nominee risk (FBA s.36; DBD Order 2/2569, in force 1 Aug 2026, asks for more evidence of real investment at registration). | Activity must qualify; longer approval; ongoing BOI reporting; benefits only for promoted scope; BOI spouse ≠ Smart spouse on work rights. | Narrow Smart S eligibility; criteria can change; tied to endorsed activity/company; not a general SME escape hatch. |
Path A: Self-sponsoring through your own Thai company (Non-B + WP)
Self-sponsorship means your Thai limited company meets the criteria to employ foreigners, then sponsors you (as director or employee) for a work permit, coordinated with a Non-Immigrant B stay. For mechanics and document checklists, see self-sponsoring a work permit through your own company and what a Thailand work permit is (and is not).
Capital test (~2M / WP) and ceiling of ten + four exceptions
For a standard Thai company sponsoring a foreign work permit, the Department of Employment regulation of B.E. 2547 (clause 5(3)) sets the long-standing capital test of about 2 million baht paid-up registered capital per foreign permit (often 1 million where the applicant has a lawfully registered Thai spouse, for that spouse’s permit only), with a general ceiling of ten foreigners unless one of the four exception tests in the B.E. 2547 criteria is met: corporate income tax paid ≥3M in the prior year; export foreign-exchange ≥30M; tourism ≥5,000 foreign visitors; or ≥100 Thai employees.
Thai staffing expectations (4:1 + SSO seasoning)
Separately, the one-year extension of stay requires the company to employ four Thai employees per foreigner. That ratio is item 2.1(5) of the criteria annexed to Immigration Bureau Order 12/2568 of 23 January 2025, a condition Immigration applies to the extension, not a Department of Employment rule; representative, regional and branch offices of foreign companies are held to one Thai employee per foreigner instead. How long those employees must have been paying social security contributions before you file (often said to be about three months) is office practice, not a written rule, so confirm it with the office handling your file.
Visa linkage (Non-B → WP → annual extension)
In practice, Non-B stay permission and the work permit move together: the permit is employer-, position-, and place-specific, and annual extensions usually require both to stay valid.
One-year Non-B extensions tied to employment commonly require a minimum monthly salary that varies by nationality under Immigration practice (the criteria annexed to Immigration Bureau Order 12/2568 of 23 January 2025; Police Order 327/2557, often still quoted, was repealed in September 2023). Confirm the current band for the applicant’s passport with the filing office before you rely on any published table, including this one.
Real office, VAT, SSO, e-Work Permit workflow
Expect a real office that can survive a spot check, tax ID / VAT compliance where applicable, and SSO registration for staff. The e-Work Permit system for expatriates changes how permits are issued; treat biometric and card timelines as operational and confirm current timelines with the Department of Employment rather than relying on a fixed number of days.
Government WP fees for ordinary occupations remain on the published schedule: 100 baht application plus 750 / 1,500 / 3,000 baht by permit length up to one year (longer permits accrue the same bands; a two-year permit is often 6,000 by that arithmetic).
Main friction: capital, staffing practice, FBA ownership, nominees
Capital and staffing are only half the picture. Under the Foreign Business Act, a Thai-registered company that is 50% or more foreign-owned is itself a “foreigner” (s.4), and List restrictions apply. Thai nominee shareholding to evade the Act is a criminal offence under section 36 (imprisonment and/or fines of 100,000 to 1,000,000 baht, plus court orders to unwind). From 1 August 2026, DBD Order 2/2569 tightens registration evidence for many under-50% foreign structures. The penalty that matters is the one in section 36 of the Foreign Business Act itself: up to three years’ imprisonment, a fine of 100,000 to 1,000,000 baht, or both, and the court orders the arrangement to end.
Path B: BOI-promoted route for founders
BOI promotion is activity-driven. It can unlock tax and non-tax incentives and a different visa/WP channel, but only if your project sits on the live promoted list and you keep complying. See BOI promotion benefits and application.
FBA: ≥50% foreign = foreigner; List 2/3 via s.12; List 1 closed
Under the Foreign Business Act, ≥50% foreign ownership makes the company a “foreigner” (s.4). BOI promotion can open a certificate route under FBA section 12 for List Two or List Three activities, not List One, which remains closed to foreigners. Promotion is not an automatic List rewrite; the certificate follows promotion for qualifying List 2/3 activities.
WP/visa via BOI channel (not ordinary DOE 2M/4:1)
A BOI-promoted company sponsors foreign staff through BOI’s visa/work-permit channel (Single Window / TIESC), not the ordinary DOE capital-and-4:1 package. BOI still applies its own position-approval and (for larger manufacturing under Por. 8/2568, employment >100 → Thai personnel ≥70%) Thai-employment proportion rules. Published Single Window targets are on the order of several working days per step when documents are complete, not a guaranteed same-day result. BOI promotion therefore does not free a company from Thai staffing requirements.
Tax / land / non-tax incentives
BOI tax incentives are activity-group dependent. Current published basic CIT exemption bands commonly run about 3 to 8 years (with some technology tracks and merit enhancements capable of longer totals, in limited cases up to around 13 years). Always match the exact activity on the live BOI list.
Land: promotion can include a permission to own land for promoted operations where the foreign juristic person maintains paid-up capital of at least 50 million baht and meets BOI’s current office/residence criteria (Ann. 16/2567 / Por. 8/2567, late-2024 framework). Land ownership is not automatic with every promotion certificate.
Minimum investment is often framed from about 1 million baht excluding land and working capital, activity-dependent.
Eligibility, evaluation targets, ongoing compliance
After prep and complete documents, BOI publishes evaluation targets of roughly 40 / 60 / 90 working days by investment size. Promotion brings ongoing reporting and scope limits: benefits attach to the promoted activity, not to every side business you invent later.
Spouse/dependent on the BOI promotion path
A dependent visa issued because a spouse works for a BOI-promoted company does not automatically authorise the dependent to work. The dependent generally needs their own work authorisation. This is not the same as the Smart S spouse privilege described below, and the two tracks work differently.
Path C: Smart S for startup founders (current track only)
February 2025 reform: Smart S + dependents only for new apps
As of the February 2025 BOI Smart Visa reform (Cabinet 13 Jan 2025; BOI Announcement Por. 5/2568 of 18 Feb 2025, which repealed Por. 12/2561), new Smart qualification is focused on startup entrepreneurs (Smart S) and their dependents. Do not rely on legacy Smart Talent / Investor salary or investment figures (e.g. Smart T ≥100k monthly, Smart I 20M/5M) as live gates for new applications.
Current gates
Typical published gates include a certified targeted-industry startup (often framed as established within about two years), at least 25% equity or a director role, a bank deposit of ≥600,000 baht (plus 180,000 per dependent) held for at least three months, and health insurance.
Work without traditional WP; spouse may work
Holders may work in endorsed activities without a separate traditional work permit. Under current Smart rules, a qualifying spouse may be permitted to work without a separate traditional work permit. That privilege belongs to the Smart track, and it does not transfer by analogy to a BOI-promotion dependent visa.
Validity: up to 2 years, renewable
Smart S visa framing under current portal/announcement materials is up to 2 years, renewable, not “up to 4 years” for new applications.
How Smart S differs from Non-B self-sponsor and full BOI promotion
Smart S is immigration/work facilitation for a narrow certified-startup profile. It is not a full BOI tax-holiday substitute, and it does not by itself rewrite FBA ownership rules. Self-sponsor Non-B + WP remains the default when your activity is ordinary SME work outside Smart/BOI eligibility. Full BOI promotion remains the route when you need List 2/3 ownership certificates, land permission potential, or activity-group tax incentives.
How to choose: decision framework for founders
- Fast market entry vs ownership control vs sector incentives. If you need speed into an ordinary services business, self-sponsor Non-B may be more realistic than waiting on BOI evaluation, provided capital and staffing practice are fundable.
- “I need 100% foreign ownership.” Look at BOI / treaty / Foreign Business Licence routes described in setting up a Thai company as a foreigner, not nominees. Nominees invite FBA s.36 exposure.
- “My activity is not BOI-eligible.” Plan a realistic Non-B self-sponsor structure (or another licence route), not a forced BOI story.
- “I’m building a certified targeted-industry startup.” Evaluate Smart S against BOI promotion and Non-B: deposit/equity gates vs tax holiday vs capital-and-payroll load.
- Spouse who will work. If the principal is on BOI promotion, budget the spouse’s own WP. If the principal is on Smart S, the spouse privilege may apply under Por. 5/2568; confirm status before they start work.
Common mistakes that sink founder applications
- Treating shareholding or a board seat as a work-permit substitute (Decree s.8).
- Nominee or artificial staffing structures (FBA s.36; Order 2/2569 documentary context).
- Starting work before WP issuance, or outside Smart endorsed scope.
- Assuming a BOI promotion spouse/dependent visa equals work rights (it does not; ≠ Smart spouse privilege).
- Relying on obsolete Smart T/I gates or “up to 4 years” marketing for new Smart applications.
- Confusing DTV remote work with local founder work; see the digital nomads guide.
- Working without (or outside) a permit: foreigner fines under Decree s.101 (5,000 to 50,000 baht) then removal; employers under s.102; a foreigner penalised under s.101 generally faces a two-year bar on a new WP under s.64/1.
Last reviewed: 30 September 2026 (scoped). Checked against the Thai text of the Department of Employment regulation of B.E. 2547 (clause 5(3)), the criteria annexed to Immigration Bureau Order 12/2568 (item 2.1 and the Annex Kor income table), and Foreign Business Act sections 4, 12 and 36; the Emergency Decree penalties were checked in the same day’s review. The BOI and Smart S figures (Por. 5/2568, Por. 8/2568, land permission, evaluation times, deposits, validity) were not re-read, because the BOI website blocks automated access; confirm them with the BOI.
FAQ
Does owning a Thai company let me work without a work permit?
No. Ownership and board membership do not by themselves authorise work. Decree s.8 generally requires a work permit or a statutory exemption (such as approved Smart S activity). Passive board-only scenarios are fact-specific; do not rely on informal exceptions.
What capital do I need per foreign WP on a non-BOI company?
About 2 million baht paid-up registered capital per foreign WP; often 1 million if you have a lawfully registered Thai spouse (that permit only); general ceiling 10 unless one of the four DOE Reg. 2547 ข้อ ๕(๓) exceptions applies.
Is the “4 Thais per foreigner” rule statute or practice?
Neither, strictly: the ratio is a written condition of the one-year extension of stay, item 2.1(5) of the criteria annexed to Immigration Bureau Order 12/2568, not a work permit rule. The Department of Employment works on capital instead (2 million baht per foreigner). How long Thai staff must already be on social security is office practice; confirm at filing.
Does BOI skip ordinary DOE capital/4:1, and does BOI still have its own Thai-staff rules?
Yes to the first in the sense that BOI uses its own visa/WP channel rather than the ordinary DOE 2M/4:1 package; no to “BOI has no Thai staff rules”; e.g. Por. 8/2568 manufacturing headcount proportions.
Do Smart S holders still need a traditional work permit?
For endorsed Smart S activities, holders may work without a traditional WP under Por. 5/2568. Outside endorsed scope, do not assume exemption.
Can my spouse work on my BOI path vs on Smart S?
BOI promotion dependent visa ≠ automatic work rights; spouse generally needs own WP. Smart S qualifying spouse may work without a separate traditional WP under Por. 5/2568. Never conflate.
Is BOI the same as Smart Visa?
No. BOI promotion is an investment-promotion certificate with tax/non-tax incentives and a facilitation channel. Smart S is a current Smart Visa track for certified startups (immigration/work facilitation), not a full tax-holiday substitute.
How does e-Work Permit change founder applications?
It changes the process channel for issuance and renewals. Processing times vary, so check the current timeline with the Department of Employment before you plan around a date. See the e-Work Permit guide.
What if my business is pure retail / trading / general services?
Many of those activities sit outside BOI/Smart S eligibility and face FBA List constraints. Plan a realistic Non-B self-sponsor or licence structure, and avoid nominee shortcuts.
What about SME corporate tax?
Ordinary CIT is generally 20%. A reduced SME schedule applies only if both paid-up capital ≤5 million and revenue from sales/services ≤30 million in the same period (plus RD continuity conditions).
Next steps / related guides
If you are choosing among these three paths, a structure review before you deposit capital or hire staff usually costs less than unwinding a nominee or a refused Non-B extension later. You can contact ThaiLawOnline for a founder-path review; no outcome is guaranteed.
Must-read hubs
- Self-sponsoring a work permit through your own company
- BOI promotion benefits and application
- Setting up a Thai company as a foreigner (FBA / 2026 rules)
- What a Thailand work permit is (and is not)
- e-Work Permit system for expatriates
- When DTV / LTR differ from founding a Thai Co
This page describes Thai law as it stood in September 2026. Thai law changes, and how it applies depends on your circumstances. It is general information, not legal advice for your situation.
One option for founders in Thailand is to obtain a Self-Sponsored Work Permit, allowing them to work through their own company.
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