How to Register a Company in Thailand (2026): DBD Bizregist & E‑filing Step‑by‑step for Foreign Investors

Company registration Thailand has moved decisively online, and the ongoing upgrades to the Department of Business Development (DBD, กรมพัฒนาธุรกิจการค้า) digital systems make this one of the most significant procedural shifts foreign investors have faced in years. The DBD now channels standard incorporations through its digital registration (DBD Biz Regist) and e‑Filing platforms, with a dedicated e‑Foreign Business workflow for activities touched by the Foreign Business Act. This guide is written as an operational walkthrough, a regulator‑style set of steps, documents, timings and costs, rather than a marketing overview, so that in‑house counsel and external advisers can execute each stage with confidence.

Everything below is grounded in the official DBD, Ministry of Commerce, Board of Investment, Revenue Department and Bank of Thailand guidance cited at the end, and specific figures should be confirmed against current official schedules before filing.

1. Overview: company registration in Thailand (2026)

The private limited company is the default vehicle for foreign investment in Thailand. It offers limited liability, a recognisable governance structure under the Civil and Commercial Code, and full compatibility with the DBD digital registration and e‑Filing platforms. Before committing to incorporation, foreign investors should confirm which legal form actually fits their commercial purpose.

For most inbound investors, company registration Thailand through a private limited company is the right starting point. The branch and representative office routes remain available but carry their own Foreign Business Act approvals and are usually chosen only where the parent must contract directly or where no local subsidiary is desired.

2. Eligibility & key foreign‑investor rules

Foreign investors cannot treat Thai incorporation purely as an administrative exercise. The permissibility of the activity, the ownership structure and any licensing requirement must be settled before the DBD filing, because the registered objectives and shareholding will be scrutinised.

Foreign Business Act (FBA) overview

The Foreign Business Act B. E. 2542 (1999) restricts the activities that a “foreign” company may carry on in Thailand. Under the Act, a company is generally treated as foreign where half or more of its shares are held by non‑Thai persons. Restricted activities are grouped into statutory lists (Lists 1, 2 and 3); some are prohibited to foreigners, while others require a Foreign Business Licence or, in certain cases, a Foreign Business Certificate (for example, for those qualifying under a treaty or BOI promotion) before operations may begin.

Where your activity falls inside a restricted list, incorporation alone does not grant the right to trade, you must secure the relevant FBA permission, which is processed through the DBD, including its e‑Foreign Business interface.

BOI promotions & exceptions

The Board of Investment (BOI) can grant promotion that materially changes the position for foreign investors. Promoted projects may enjoy relaxed foreign shareholding limits, tax incentives and the ability to operate activities that would otherwise be restricted under the FBA. BOI promotion is project‑specific: eligibility turns on the promoted activity category, investment level and conditions imposed in the promotion certificate. Where BOI promotion is contemplated, the company structure and registered objectives should be aligned to the promotion application from the outset to avoid re‑filing.

Shareholding caps and common sector restrictions

• Services and trading. Many service activities sit within the restricted lists, pushing majority‑foreign companies towards a Foreign Business Licence or a BOI/treaty route.
• Land and property. Foreign ownership of land is constrained under the Land Code; structuring must respect those limits rather than circumvent them.
• Manufacturing. Many manufacturing activities are more open, and BOI promotion frequently permits majority or full foreign ownership.
• Professional and regulated sectors. Additional sector licences may apply on top of the FBA position.

The practical rule for company registration Thailand is to map the exact activity to the FBA lists and the BOI categories first, then design the shareholding so the DBD filing is consistent with the eventual licensing position.

3. Step‑by‑step: company registration Thailand using DBD BizRegist & e‑Filing

The following is the core procedure to register a private limited company through the DBD digital registration (Biz Regist) and DBD e‑Filing systems in 2026. Each step sets out who is responsible, the documents involved, the realistic duration and the errors that most often cause rejection.

1. Step 1, Create a DBD digital registration account and complete e‑Filing setup.
   • Who: The company founder, authorised representative or appointed lawyer.
   • What: Register for a DBD digital registration (Biz Regist) account and link it to the e‑Filing environment. Set up the digital identity and electronic signature credentials that the platform requires for submission.
   • Documents: Identity document of the account holder; where a lawyer acts, a notarised and legalised power of attorney with certified Thai translation.
   • Duration: Typically 1–3 days, driven mainly by account verification.
   • Common errors: Mismatch between the name on the digital ID and the submitting party; failure to configure the e‑signature before filing, which blocks submission at the final step.
2. Step 2, Reserve the company name.
   • Who: Applicant via the DBD system, or the lawyer on their behalf.
   • What: Submit the proposed name (Thai and, where required, English) through the DBD name reservation function. Use DBD company search to confirm the name is not already taken or confusingly similar, and that it avoids prohibited or reserved words.
   • Documents: List of preferred names in order of priority.
   • Duration: Commonly same day to a few days.
   • Common errors: Choosing a name too close to an existing registration; inconsistent Thai and English versions; selecting words that imply a regulated activity the company is not licensed for.
3. Step 3, Prepare the incorporation documents.
   • Who: Promoters, lawyer and (for foreign signatures) a notary.
   • What: Draft the Memorandum of Association (MOA), the Articles of Association (AoA), the list of shareholders and their shareholdings, and the directors’ consents. The MOA fixes the registered objectives, capital and promoters; the AoA governs internal management. Under the Civil and Commercial Code, a private limited company is formed by its promoters and a statutory minimum number of shareholders is required at registration.
   • Documents: MOA, AoA, shareholder list, share subscription forms, director consent forms, and certified copies of shareholder and director identity documents.
   • Duration: 1–5 days, depending on how quickly notarisation of foreign signatures can be arranged.
   • Common errors: Registered objectives drafted too narrowly to cover planned activities; foreign signatures not notarised or legalised; translations that do not match the Thai filing.
4. Step 4, File via DBD e‑Filing and pay the DBD fees.
   • Who: Applicant or lawyer.
   • What: Upload the incorporation documents into DBD e‑Filing, apply the electronic signatures, and pay the registration and name‑related fees online. The system records the submission and issues a tracking reference on the dashboard. In practice, Thai company incorporation can be completed as a single combined registration where the memorandum registration and company registration are filed together.
   • Documents: All Step 3 documents in the required digital format.
   • Duration: Typically 1 day.
   • Common errors: Incorrectly formatted uploads; capital figures in the MOA inconsistent with the share subscription; missing signatures on a required page, which causes the whole submission to be returned.
5. Step 5, Document capital where required.
   • Who: Company, bank or auditor.
   • What: Where the capital level or the circumstances require it, obtain bank or auditor confirmation evidencing the capital position. Foreign capital brought into Thailand should also be remitted and reported in accordance with Bank of Thailand foreign‑exchange rules.
   • Documents: Bank statement or auditor’s letter; capital remittance records for foreign funds.
   • Duration: Runs in parallel with filing; typically a few days once documents are requested.
   • Common errors: Treating capital remittance as an afterthought; failing to document the inflow for later foreign‑exchange reporting.
6. Step 6, Receive the registration certificate and tax ID.
   • Who: DBD registrar, then the Revenue Department.
   • What: The DBD registrar completes its check and issues the certificate of incorporation. The company’s registration number also serves as its tax identification number for most purposes.
   • Documents: Issued on approval; retain the certificate and company affidavit.
   • Duration: Commonly a few working days after a correct filing.
   • Common errors: Not downloading and retaining the official certificate; failing to reconcile the registered details before moving to tax and banking steps.
7. Step 7, Complete post‑registration filings.
   • Who: Company, accountant, HR team and bank.
   • What: Register for VAT with the Revenue Department where the turnover threshold is reached or voluntary registration is chosen; register with the Social Security Office once employees are engaged; and, where relevant, complete the e‑Foreign Business steps for any FBA‑restricted activity.
   • Documents: Certificate of incorporation, tax ID, registered office proof, employee details.
   • Duration: Varies depending on the bank and the activity.
   • Common errors: Starting restricted operations before the Foreign Business Licence or Certificate is in hand; missing VAT registration deadlines.

Step / Who / Duration timeline

4. Required documents (with notarisation and translation notes)

The documentation burden for company registration Thailand is heavier for foreign investors than for Thai nationals, principally because foreign‑executed documents must be authenticated and translated. Prepare the full set before filing to avoid e‑Filing rejections.

Notarisation, legalisation and translation

Foreign‑executed documents generally require two things before they are accepted: authentication in the country of origin and translation into Thai. The authentication route depends on the jurisdiction. Note that Thailand is not a party to the Hague Apostille Convention, so apostilled documents are generally not sufficient on their own for use in Thailand, foreign documents typically require notarisation followed by legalisation through the relevant foreign ministry and, where required, certification by a Thai embassy or consulate. Translations must be accurate and consistent with the Thai filing, a mismatch between an English source and the Thai MOA is a frequent cause of rejection. Use qualified translators and keep the translated and original versions paginated together.

5. Timeline & deadlines

For a straightforward private limited company with correctly prepared documents, DBD e‑Filing incorporations are completed relatively quickly. The registrar’s check commonly takes a few working days where the filing is complete and correct. Account setup and name reservation precede this, and notarisation and legalisation of foreign documents is usually the real rate‑limiting step.

• Standard path. With documents ready, account creation, name reservation, filing and certificate issuance can often be compressed into roughly one to two weeks.
• FBA path. Where a Foreign Business Licence or Certificate is required, add further time for the DBD / FBA review, which can run to several weeks or more.
• BOI path. Where BOI promotion is sought, the promotion application timeline runs on its own track and should be planned before incorporation, not after.

The condensed Step / Who / Duration table in Section 3 is the reference point: build your project plan around the longest dependency in your particular case, which for foreign investors is almost always document authentication or FBA/BOI approval rather than the DBD registration itself.

6. Costs, fees and payment methods

Government charges for company registration Thailand are generally modest; the larger costs are professional, notarisation, legalisation, translation, capital verification and legal fees. The figures below are indicative only and should be confirmed against the DBD’s current fee schedule and your service providers before filing.

Payment of DBD fees is made online through the DBD digital registration and e‑Filing platforms for standard filings, reducing the need for over‑the‑counter payment. Professional costs are paid directly to the relevant provider.

7. What changes in 2026 (DBD digital registration & e‑Foreign Business)

The direction of travel is unambiguous: digital filing is the primary route, and in‑person filing is increasingly the exception. Three practical shifts matter most for foreign investors:

• Primacy of e‑Filing. Standard company registrations are routed through the DBD digital registration and e‑Filing systems, with document upload, e‑signature and online payment replacing counter submission.
• e‑Foreign Business workflow. Foreign Business Act notifications and applications are increasingly handled through the DBD’s e‑Foreign Business channel, tying FBA permissions more closely to the digital registration environment.
• Digital identity and e‑signature. The platforms rely on digital ID and electronic signature credentials, which must be configured before filing, a common tripping point for first‑time foreign applicants.

The practical effect tends to be faster standard incorporations but a steeper onboarding curve for investors unfamiliar with Thai digital‑ID requirements. The sensible migration tip is to complete account creation and e‑signature setup well ahead of the intended filing date, so that document preparation and submission are not held up by credentialing.

8. Common pitfalls & how to avoid them

• Name reservation errors. Names too similar to existing registrations, or inconsistent Thai and English versions, trigger rejection, run a DBD company search first.
• Narrow registered objectives. Objectives that do not cover planned activities force amendments later; draft them to match your actual and foreseeable business.
• Missing notarisation or legalisation. Foreign signatures that are not notarised and properly legalised will not be accepted.
• Translation mismatches. Discrepancies between the Thai filing and foreign‑language source documents are a frequent cause of return.
• FBA non‑compliance. Beginning restricted activities before a Foreign Business Licence or Certificate is issued exposes the company to penalties.
• Ignoring BOI conditions. Where BOI promotion is granted, the share structure and objectives must match the promotion, misalignment undermines the incentive.
• Incorrect share class or capital figures. Capital stated in the MOA must reconcile with the share subscription and any verification documents.
• Unconfigured e‑signature. Failing to set up the digital certificate before filing blocks submission at the final step.
• Capital remittance oversight. Foreign capital inflows should be remitted and documented in line with Bank of Thailand foreign‑exchange rules.
• Registered office problems. Weak or undocumented proof of the registered office delays both incorporation and tax registration.
• Treating registration as the finish line. VAT, social security and banking steps are mandatory downstream obligations, not optional extras.

9. Quick comparison: DBD e‑Filing vs in‑person filing

For the majority of foreign investors, e‑Filing is the correct route. In‑person filing is generally reserved for complex matters requiring special approvals or where physical verification cannot be avoided.

10. Checklist: next steps after registration

• Open a corporate bank account. Prepare the certificate of incorporation, affidavit, director identification and board resolutions; timelines and requirements vary by bank.
• Register for tax and VAT. Confirm the tax ID and complete VAT registration with the Revenue Department where applicable.
• Register for social security. Complete employer registration with the Social Security Office once staff are engaged.
• Complete FBA formalities. Finalise the Foreign Business Licence/Certificate steps for any restricted activity before trading.
• Report foreign capital. Ensure foreign capital inflows are remitted and reported per Bank of Thailand rules.

Each of these feeds into the wider cluster of supporting guidance within the Company practice, Thailand resources.

12. Model timeline and next steps

Company registration Thailand in 2026 rewards preparation: configure your DBD digital registration and e‑Filing credentials early, settle your Foreign Business Act and BOI position before drafting the MOA, and assemble the full notarised, legalised and translated document set before you file. Handled in that order, a standard private limited incorporation moves through the DBD system efficiently and positions the company cleanly for its post‑registration tax, banking and compliance obligations. For a bespoke incorporation assessment, consult the Thailand lawyer directory, company & corporate.

Sources

1. Department of Business Development (Ministry of Commerce)
2. Ministry of Commerce (Thailand)
3. Board of Investment (BOI)
4. Revenue Department (Thailand)
5. Bank of Thailand
6. Social Security Office (Thailand)
7. Lawyers Council of Thailand