Good to know
Good to Know
- The 51% Thai-shareholder route is the fast, common path for most nomad-run small businesses (cafés, consulting, retail, agencies) in Chiang Mai, but your Thai partner must be a genuine investor — paying a friend or lawyer to hold shares as a paper 'nominee' is a criminal offense for both parties.
- If you want to sponsor your own work permit through your company, plan for at least 2 million THB in registered (and ideally actually paid-up) capital per foreign work permit — this is often the real budget driver, far more than the registration fees themselves.
- A virtual/registered office address is fine for the initial DBD company registration, but you'll need a real, inspectable physical address once you register for VAT or apply for a Foreign Business License.
- Since 2025, Thailand has moved registration almost entirely online via the 'DBD Biz Regist' platform, phasing out walk-in/paper filing — foreign applicants use the DBD e-Service or NDID for identity verification.
- Budget realistically for the whole first year, not just registration: translations, professional/legal fees, and annual audit/accounting compliance commonly add far more than the government filing fees alone.
- There is no 'freelancer visa' or sole-proprietorship registration for foreigners in Thailand — if you want a locally compliant business entity in Chiang Mai, the practical minimum is a Thai limited company, not an individual business registration.
- The default foreign ownership cap of 49% catches many first-time founders off guard; going above that requires a specific legal route (FBL, BOI, or the US Treaty of Amity for US nationals) arranged before incorporation, not after.
- SME progressive corporate tax rates only apply if BOTH paid-up capital stays under THB 5 million AND annual revenue stays under THB 30 million — exceeding either threshold pushes the whole company to the flat 20% rate.
- Corporate filing deadlines (150 days for the annual return, plus a mid-year prepayment) apply the same way whether the company is registered in Chiang Mai or Bangkok, since CIT is a national Revenue Department tax, not a municipal one.
- Using a Thai nominee shareholder to get around the 49% foreign-ownership limit is a real legal risk, not just a technicality — Thai authorities have actively targeted nominee arrangements in enforcement sweeps in recent years.
Corporate Income Tax
- Tax Basis
- Thai-incorporated companies (including foreign-owned Thai companies) are taxed on their worldwide net profit at the standard structure; a foreign company without a permanent establishment in Thailand is instead generally subject to a final withholding tax on Thai-sourced income such as dividends, interest, royalties and service fees.
- Governing Law
- Thai Revenue Code (Sections 65-76), administered nationally by the Revenue Department, including its Chiang Mai area office; filings are done via the Revenue Department's e-Filing system regardless of which province the company is registered in.
- Incentive Note
- BOI (Board of Investment)-promoted companies can receive CIT exemptions of roughly 3-8 years (up to about 13 years in some zones with additional incentives), but this requires a separate BOI promotion application and is a distinct process from ordinary company registration.
Standard Rate
- Rate Percent
- 20
- Applies To
- Companies and juristic partnerships that don't qualify as SMEs, and foreign companies with a permanent establishment carrying on business in Thailand
- Description
- Standard flat corporate income tax (CIT) rate on net profit
Filing Obligations
- Annual Return
- Form PND 50 (CIT 50), due within 150 days of the close of the accounting period; for a calendar-year company this typically falls around 30 May of the following year.
- Mid Year Prepayment
- Form CIT 51 half-year estimated tax return and prepayment, due within 2 months after the first six months of the accounting period.
- Supporting Documents
- CPA-audited financial statements (income statement, balance sheet, cash flow statement, statement of changes in equity) plus tax adjustment schedules must accompany the annual filing.
- Half Year Deadline Alt
- Some sources describe the half-year return deadline as within 60 days of the mid-point of the accounting period.
- Late Filing Consequences
- Late or missed filings can trigger surcharges, penalties, and interest on unpaid tax.
Other Business Taxes
- VAT
- Standard VAT rate is 7% (a temporary reduction from the statutory 10%, currently extended by Royal Decree through 30 September 2026, after which it may revert to 10% unless extended again). Businesses with annual revenue above a registration threshold must register for VAT.
- Withholding Tax
- Applies to various domestic and cross-border payments (services, royalties, dividends, interest); rates vary and may be reduced under Thailand's double tax treaties.
- Specific Business Tax
- A small set of businesses exempt from VAT (e.g. financial institutions) pay Specific Business Tax on gross receipts instead.
SME Progressive Rates
- Eligibility
- Paid-up capital not exceeding THB 5,000,000 at the end of the accounting period AND annual revenue not exceeding THB 30,000,000
- Description
- Reduced progressive rates for qualifying small/medium enterprises (SMEs)
Brackets
THB 0 - 300,000
- Rate Percent
- 0
THB 300,001 - 3,000,000
- Rate Percent
- 15
Above THB 3,000,000
- Rate Percent
- 20
Note On Thresholds USD
- 300000 Local Approx
- THB 300,000
- 3000000 Local Approx
- THB 3,000,000
- 5000000 Local Approx
- THB 5,000,000
- 30000000 Local Approx
- THB 30,000,000
Structure Comparison
Thai Limited Company
- Corporate Tax Treatment
- Once incorporated, the company is taxed the same as any other Thai company under the CIT rules above — a Thai-majority-owned company and a 100% foreign-owned (FBL/BOI/Amity) company both file the same CIT 50/51 forms, though BOI-promoted companies may separately hold a CIT exemption for a set number of years.
- Summary
- A private limited company is the standard, most common vehicle for a foreigner to legally operate a business in Chiang Mai. It is a separate legal entity, offering liability protection the freelancer route does not.
- Minimum Capital
- Ordinary Thai-majority companies typically register with modest capital, but a majority- or 100%-foreign-owned company is generally required to hold higher minimum capital (commonly cited around THB 2-3 million, or more for FBL-licensed activities), and cannot own land.
- Typical Setup Cost Range
- THB 10,000
Lower end of typical government filing + basic legal/admin fee range; can run up to roughly THB 50,000 (~USD 1,500) or more depending on complexity and licensing needs
- Nominee Shareholder Warning
- Using Thai nominee shareholders to disguise foreign control while nominally staying under the 49% threshold is illegal under the FBA (Sections 36-37) and can result in imprisonment of up to three years and fines, plus forced dissolution of the business.
- Foreign Ownership Default Limit
- Under the Foreign Business Act (FBA), a company is classified as 'foreign' once 50% or more of its shares are held by non-Thais; without a special route, foreign ownership of a private limited company is generally capped at 49%, with Thai nationals holding the remaining 51%.
- Legal Availability For Foreigners
- Fully legal and regulated
Routes To Majority Or 100pct Foreign Ownership
- Foreign Business License (FBL) from the Department of Business Development / Foreign Business Committee, required for most restricted service-sector activities
- Board of Investment (BOI) promotion for qualifying activities — can also unlock tax holidays and easier work-permit quotas
- US-Thailand Treaty of Amity (US citizens/majority-US-owned companies only) — allows 100% foreign ownership without an FBL, subject to a list of reserved excluded activities
- Unrestricted activities such as export-focused manufacturing of one's own goods, which do not require an FBL at all
Freelancer Or Sole Proprietor
- Summary
- Foreigners cannot register as sole proprietors in Thailand; a foreign individual has no legal path to hold a Thai sole-proprietorship business registration and must instead form a limited company or partnership to operate a business locally.
- When Typically Used
- Digital nomads billing only foreign clients from a personal foreign or Thai bank account, without registering a Thai entity — a legal gray area handled under visa/immigration rules rather than the corporate tax system, and not something this business-registration process legitimizes.
- Practical Implication
- A foreigner in Chiang Mai working as an informal freelancer (invoicing clients directly as an individual, no Thai company) is operating outside the formal Thai business-registration and work-permit framework. This is common in practice among remote workers serving only overseas clients, but it is not a recognized 'sole trader' business structure under Thai law and carries legal exposure if the work is deemed to be conducted 'in' Thailand without a permit.
- Legal Availability For Foreigners
- Illegal or not available
Available Structures
Thai-majority Limited Company (49% foreign / 51% Thai)
- Foreign Ownership Cap
- Up to 49%
- Local Partner Mandate
- Yes — Thai shareholders must hold 51%+ and must be genuine investors, not paid figureheads.
- Description
- The most common route for foreign entrepreneurs. Thai nationals hold at least 51% of shares, so the company is legally classified as 'Thai' and is not subject to FBA foreign-ownership restrictions, letting it operate in most sectors without an FBL. Foreigners can still retain operational control as sole/majority director, via preference shares, or via shareholder/management agreements.
Foreign Business License (FBL) company
- Foreign Ownership Cap
- Up to 100%, but only if license is granted
- Local Partner Mandate
- No, if license granted
- Description
- Allows a foreign-majority-owned (50%+) company to legally operate in FBA List 2/3 restricted sectors. Application is submitted to the DBD and reviewed by the Foreign Business Committee, which has broad discretion; approval is not guaranteed and the process is comparatively slow.
BOI (Board of Investment)-promoted company
- Foreign Ownership Cap
- Up to 100% in promoted sectors
- Local Partner Mandate
- No
- Description
- For businesses in BOI-designated priority sectors (tech, software/AI/fintech, advanced manufacturing, medical/wellness, creative industries, etc.), BOI promotion allows up to 100% foreign ownership with no Thai shareholder requirement, plus tax and non-tax incentives.
US Treaty of Amity company (US citizens/entities only)
- Foreign Ownership Cap
- Up to 100% (US nationals/entities only)
- Local Partner Mandate
- No, for US applicants only
- Description
- Under the 1966 Treaty of Amity, companies majority-owned by US citizens can be certified to operate 'as if Thai,' exempting them from most FBA restrictions and allowing up to 100% American ownership in most sectors (excluding communications, transport, land ownership, banking with depository functions, and a few others). Requires registering a normal Thai company first, then obtaining Treaty of Amity certification from the Ministry of Commerce with US Embassy-certified documents.
Typical Incorporation Costs
THB
THB
THB
BOI Application Advisory/preparation Services (If Pursuing BOI Promotion)
- BOI Application Advisory/Preparation Services (If Pursuing BOI Promotion)
- THB 150,000
Range runs up to 300,000+ THB (~8,982+ USD) for complex applications.
THB
Minimum Capital Requirements
THB
THB
THB
Scope Note
This entry covers business-level tax obligations for a foreign-owned company operating in Chiang Mai and the practical freelancer-vs-company decision.
Timeline
- Boi Promotion
- Roughly 60–90 days (sometimes cited as 3–6 months for more complex applications) for BOI application review.
- Work Permits And Visas
- Add roughly 2–4 weeks after company registration completes; Thailand's e-work permit system processes applications within about 7 business days once the application is filed.
- Foreign Business License Fbl
- Add roughly 3–6 months on top of standard registration; the Foreign Business Committee's review timeline is unpredictable and approval is not guaranteed.
- Treaty Of Amity Certification
- A few additional weeks on top of standard company registration, for US applicants.
- Standard Thai Majority Company
- Roughly 2–4 weeks total from name reservation to receiving the registration certificate, assuming documents are ready. The core DBD filing/approval step itself now typically clears in 1–5 business days under the DBD Biz Regist digital system rolled out in 2025, but name reservation, document prep, and corporate bank account activation add the remaining time.
Legal Framework
Foreign participation is governed by the Foreign Business Act (FBA) B.E. 2542 (1999), which divides business activities into three lists. List 1 is fully prohibited to foreigners (e.g. land trading, media). List 2 covers activities affecting national security/culture, needing Cabinet approval. List 3 covers 'not yet ready to compete' sectors (including most professional and general service businesses), requiring a Foreign Business License (FBL) if a company is foreign-majority owned.
Jurisdictional Note
Company formation is administered nationally by Thailand's Department of Business Development (DBD) — there is no separate Chiang Mai registry. The process, capital rules, and local-partner requirements described here apply identically whether incorporating in Chiang Mai, Bangkok, or elsewhere in Thailand.
Standard Process Steps
Standard Process Steps
- 1. Reserve a unique company name (Thai and English versions) with the DBD via the DBD Biz Regist online platform.
- 2. Draft and file the Memorandum of Association (requires at least 2 promoters/initial shareholders, minimum age 21).
- 3. Convene the statutory meeting to adopt the Articles of Association and appoint directors — must happen within 3 months of filing the MOA or the process is delayed/fined.
- 4. Register the company with the DBD (list of shareholders, directors with specimen signatures, registered Thai office address; a virtual office is generally acceptable for this initial DBD step, but not for VAT registration or an FBL application, which require an inspectable physical address).
- 5. Obtain a corporate tax ID from the Revenue Department and register for VAT if applicable.
- 6. Open a corporate bank account and deposit registered capital — director(s) typically must appear in person at the bank; capital should genuinely be transferred in and evidenced by a bank statement, especially if a work permit will be sponsored.
- 7. Apply for any required work permits/visas for foreign directors or staff after the company is registered.
- 8. If majority foreign-owned in a restricted sector: apply separately for a Foreign Business License, or pursue BOI promotion / Treaty of Amity certification instead.
Official Government Links
Official Government Links
Local Partner Or Sponsor Mandates
- Summary
- For the standard (non-BOI, non-Treaty, non-FBL) route, at least 51% Thai shareholding is required for the company to be treated as a Thai entity and avoid FBA restrictions. This is the practical default for most foreign solo entrepreneurs and small businesses.
- Nominee Warning
- Using a Thai person as a 'nominee' shareholder who holds shares on paper without genuinely investing is illegal under Section 36 of the FBA. Both the foreign business owner and the Thai nominee can face fines and up to three years' imprisonment. The DBD has tightened checks since January 2025 to screen for nominee arrangements, and Thai shareholders may need to show bank statements/tax records proving real financial capacity behind their shareholding.
- Director Nationality
- There is no legal nationality requirement for directors — a foreigner can be sole director of a Thai company. However, a foreign director who is physically present and active in the business must obtain a work permit, even if unpaid.
AI-generated estimateData refreshed July 2026
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Data last updated July 2026 · Verify anything important.