Thailand Company Formation for Foreigners: Requirements, Cost, and Timeline

Clear the four formation gates

Incorporation and permission are different gates. DBD registration creates the juristic person. The Foreign Business Act analysis determines whether foreign status restricts an activity. BOI, IEAT, treaty, and sector regimes may then create an entitlement or impose another approval. Finally, tax, employment, premises, banking, import, factory, or product rules determine whether operations can begin.

Start with a one-line description of each billed service, product flow, customer type, contracting party, asset location, and regulated function. Do not rely only on broad registered objectives: an objectives clause can be accepted while the actual activity still needs authority. DBD's current law collection also lists 2026 ministerial changes affecting specified service categories, so an old activity memo should be refreshed before filing.

The output of this screen should be an authority map: activity, foreign-ownership status, chosen legal basis, decision-maker, required capital or conditions, and the point at which revenue may start. It prevents a fast incorporation from becoming an unusable shell.

Match the ownership and permission route

There is no single foreign-founder route. The useful comparison is not “Thai company versus foreign company,” but which lawful basis covers the actual activity and ownership. For a deeper ownership comparison, see the four lawful foreign ownership routes .

An unrestricted or expressly exempt activity may allow a foreign-majority company to proceed without either instrument, but that conclusion must cover the whole operating model. Where permission is required, an FBL and an FBC are not interchangeable labels. The FBL route asks the competent authority to grant permission for a restricted activity. The FBC route records an existing legal entitlement, such as qualifying BOI or IEAT approval or treaty protection, and its scope follows that underlying basis. One company can therefore have unrestricted income, certificate-covered income, and separately licensed income, each with its own conditions and records.

A Thai-majority structure is lawful only when the Thai shareholders are real co-investors. DBD's enhanced review announced for August 2026 requires additional investment explanations and source-of-funds evidence in specified registrations involving foreign investment or foreign signing authority. Shares held for a foreigner, circular funding, blank transfers, or governance that contradicts the register create nominee risk.

BOI and IEAT are not entity types. BOI's foreign shareholding criteria allow foreign ownership for promoted activities subject to the Foreign Business Act lists, other laws, and any BOI-specific limit. IEAT privileges attach to an approved industrial-estate undertaking and may include land rights under the IEAT Act. A restricted promoted activity may still need the corresponding Section 12 FBC.

For an Amity route, U.S. ownership and nationality must be documented and the activity must fall outside treaty exclusions. The U.S. Embassy's business guidance describes U.S. Commercial Service certification before recognition of treaty status in Thailand.

Assemble the company formation requirements

A private limited company starts with at least two promoters. Section 1097, as amended by the Civil and Commercial Code Amendment Act No. 23 , reduced the minimum from three to two. Each promoter subscribes for at least one share. All shares must be subscribed, and at least 25% of each share's value is called and paid before registration; a sector, immigration, work-permission, FBA, or promotion rule may make a larger paid-up amount necessary.

Registered capital is not a formation fee . It is the company's stated share capital, with subscribed and paid-up amounts documented in the corporate records. Keep the remittance path, bank evidence, shareholder payment records, and accounting entries consistent.

Corporate decisions and filing data

• Approved Thai and English name choices, business objectives, registered address, and evidence of the right to use the premises.
• Promoter and shareholder identities, nationalities, addresses, share numbers, values, classes if used, and the final beneficial ownership record.
• Directors, signing authority, articles, incorporation resolutions, first auditor and remuneration, accounting period, and company contact details.
• Capital payment evidence and the investment explanation or Thai shareholder bank records required for the filing's risk profile.

Identity and foreign corporate evidence

Individuals normally provide passports or Thai identity documents and address/contact information. A foreign corporate shareholder may need a recent registry extract or certificate, constitutional documents, shareholder or beneficial-owner evidence, board authorization, authorized-signatory evidence, and a power of attorney. Check whether notarization, legalization, consular processing, and certified Thai translations apply in the document's issuing country and chosen route.

Build the evidence pack in two layers. The reusable identity layer contains current personal and corporate records, translations, authority documents, and beneficial-owner information. The transaction layer explains this company: subscription amounts, source and path of funds, commercial relationship among investors, director powers, address use, and the chosen foreign-business basis. Date every item, name its issuer, record whether the original is required, and assign one person to reconcile spellings and numbers across the DBD, promotion, license, tax, and bank submissions. This reduces repeated authentication and exposes a missing approval before it delays the digital filing.

Since July 1, 2026, DBD says new partnerships and private limited companies are registered online through DBD Biz Regist . That makes signer identity, digital authentication, data consistency, and upload-ready evidence part of the critical path. It does not eliminate substantive review.

Build a route-specific cost budget

Use four separate cash buckets: government charges, regulatory or project capital, transaction costs, and post-registration operating cash. Combining them produces misleading “package” prices and makes it impossible to see which amount remains an asset of the company.

These figures come from the official BOI Cost of Doing Business in Thailand 2026 , which attributes the registration figures to DBD as of September 2025. They are planning references, not a fixed quote. Confirm the live calculation for the selected route and registered capital at filing.

Keep capital outside the fee subtotal. FBA minimum-capital rules, BOI investment commitments, IEAT site and facility spending, sector solvency rules, and work-permission planning can exceed the filing charge many times over. Capital must also be funded and evidenced in the required sequence.

Variable setup costs include advice and drafting, Thai translation, notarization and legalization, registered-office evidence, digital signing, bank and remittance work, bookkeeping, annual audit, payroll, immigration, sector applications, lease deposits, and tax systems. Request a scope that identifies assumptions, exclusions, government disbursements, renewal work, and the event that triggers each fee. For a coordinated company-only scope, review Thailand company registration and formation support .

A workable budget sheet should show a low, expected, and contingency amount for each cash bucket and identify the currency, tax treatment, payee, and due date. Put translation and legalization beside the specific documents that create them; put BOI, IEAT, FBL, FBC, and sector work beside the activity that needs it; and reserve working cash for the period before bank access and revenue. This makes route changes visible. If a project moves from an unrestricted plan to an FBL case, the model should immediately reveal the additional permission fee, capital analysis, evidence work, and months of carrying cost rather than hiding them inside a revised package total.

Set a realistic formation timeline

Separate an official agency clock from an end-to-end planning range. An agency clock usually starts only when a complete application has entered the correct process; a founder's schedule also includes route analysis, corporate approvals, foreign document issuance and authentication, translations, correction cycles, capital transfer, and downstream registrations.

Planning ranges by route

• Company-only formation: plan roughly one to three weeks when names, signers, address, capital evidence, and Thai documents are ready; add two to four weeks where foreign corporate records require issuance, notarization, legalization, or translation.
• FBL case: plan in months, not days. The quality of the business case, activity definition, capital plan, technology or knowledge contribution, and responses to questions drive the schedule.
• BOI project: use the published evaluation clock, then add acceptance, certificate documentation, DBD registration, FBC where applicable, and implementation steps.
• IEAT or treaty route: build a bespoke schedule around site or nationality certification, the activity's exclusions, DBD recognition, and any sector approvals.

BOI provides a particularly useful official benchmark. Its 2026 Investment Promotion Guide states evaluation periods of 40 working days for projects up to THB 200 million, 60 working days for projects above THB 200 million and up to THB 2 billion, and 90 working days above THB 2 billion, excluding land and working capital. The clock follows complete documentation. Successful applicants then have acceptance and certificate-application stages; BOI states a certificate can be issued within 10 working days after complete certificate documents are filed.

The slowest legal dependency sets the launch date. Do not promise customers, hire foreign staff, import controlled goods, or make an irreversible lease commitment merely because DBD registration is expected first.

Sequence registration and operational setup

1. Lock the activity map. Confirm products, services, counterparties, income flows, FBA classification, sector authority, project eligibility, and site constraints.
2. Select and document the legal basis. Record why the ownership structure or FBL, FBC, BOI, IEAT, or treaty route covers each activity, including exclusions and conditions.
3. Prepare the corporate data pack. Reserve the name, settle objectives and capital, verify shareholders and directors, secure address evidence, and finish foreign document authentication.
4. Complete incorporation approvals and filing. Subscribe the shares, hold the statutory meeting, appoint directors and the auditor, collect the required share payment, and submit consistent digital records.
5. Obtain route-specific authority. Follow the approved order for promotion, license, certificate, estate permit, or sector authorization. Do not invoice a restricted activity early.
6. Establish operational controls. Open the bank account, document funding, activate bookkeeping and tax calendars, and complete VAT, payroll, social security, immigration, work, import, factory, or product steps when triggered.

VAT is a trigger-based gate rather than an automatic consequence of incorporation. The Revenue Department states that a business with annual turnover above THB 1.8 million is subject to VAT, subject to the statutory scope and exemptions, and registration timing should also account for pre-revenue facts where applicable. The Revenue Department VAT guidance should be checked against the planned first taxable supply.

A company also needs ongoing accounting from its first transactions. Thai limited-company financial statements are generally subject to audit, even when the company has not yet reached commercial scale. Formation records should therefore flow directly into the share register, general ledger, capital evidence file, contract authority matrix, and compliance calendar.

Remove the common delay and compliance risks

Route mismatch

A company is formed for consulting but contracts, staffing, and invoices reveal agency, retail, lending, construction, transport, or another regulated function. Remedy this before filing by testing every revenue line and ancillary activity, then matching objectives, permission scope, and contracts.

Ownership evidence that contradicts control

Thai shareholders cannot be placeholders. Funding, voting, dividends, board rights, reserved matters, transfer terms, and beneficial ownership should tell one credible commercial story. Nominee ownership is not a planning option .

Stale, mismatched, or incomplete documents

Differences in names, passport numbers, addresses, signatory powers, corporate status, share amounts, translations, or dates create avoidable queries. Build a single data sheet, check validity windows before legalization, and run a line-by-line consistency review before uploading.

A lease or hire made too early

Premises may need landlord documents, zoning, factory, environmental, product, or estate approval. Foreign personnel also need the correct immigration and work authorization; being a shareholder or director is not work permission. Use conditions precedent, refund rights, and staged start dates where an external approval remains open.

Choose the company route before funding

Proceed with a company-only formation when every planned activity is lawfully available under the chosen ownership and no prior project, treaty, foreign-business, site, or sector authority is needed. Use an FBL or qualifying FBC path when the activity is restricted and the entitlement is supportable. Use BOI or IEAT where the project—not merely the preferred share split—fits the program and the investment conditions are commercially acceptable.

Before releasing capital, require a signed-off route map, evidence list, four-bucket budget, dependency timeline, and post-registration compliance owner. Stop and obtain activity-specific advice if the ownership story depends on passive Thai holders, the permission scope does not match the contract, capital provenance cannot be shown, or a sector regulator has not confirmed the operating basis.