What documents are required for capital increase filing — Company incorporation and amendment filings are made at the Department of Business Development, Ministry of Commerce; foreign shareholding is governed by the Foreign Business Act B.E. 2542 (1999). Changes of director or registered address must be filed within 14 days of the resolution. The annual general meeting must be held within four months of the financial year end, with the shareholder list (BOJ.5) filed within 14 days of that meeting. A Thai limited company can be incorporated with two or more promoters following the 2023 amendment to the Civil and Commercial Code. The address stated on the documents should match the house registration or proof of residence used in the filing. Foreign land ownership is restricted by the Land Code, while condominium units are subject to the foreign-quota ratio in the Condominium Act. A contract used as evidence before a Thai court needs a Thai translation and, depending on the transaction, attesting witnesses. NAATI credentials in Australia come in different levels, and some recipients specify a minimum certification level. Where your matter passes through several agencies, we sequence the steps first so no document expires mid-chain.
“What documents are required for capital increase filing?” falls within an end-to-end service that combines document preparation, translation, signature certification, consular legalisation and coordination with the destination mission into a single file. The people who search for it are usually preparing a filing against a fixed deadline, recovering from a rejected submission and trying to identify the missed step, or coordinating documents for several people at once.
In practice, each step sits with a different body: the issuing office, the Notarial Services Attorney, the Department of Consular Affairs, and the destination country’s diplomatic mission. Knowing which body owns which step makes it possible to judge how many stages a bundle needs, and which of them cannot be corrected without starting again.
This is a baseline set. Individual receiving authorities may add requirements, so confirm with the destination body first.
Record how many stages each document needs, who certifies it, and what must finish first, so no step has to be redone.
Check personal names, company names, addresses and dates across the whole bundle before any certification begins.
Original → translation → signature certification / legalisation → destination mission. Doing these out of order forces a restart.
Verify the number of sets, the seals, the binding, and that issue dates are still within the destination’s validity window.
| Route | When it applies |
|---|---|
| Notarial Services Attorney certification | For privately drafted instruments — powers of attorney, affidavits, consent letters — signed in the attorney’s presence. |
| Legalisation at the Department of Consular Affairs | Where a foreign authority needs confirmation of the Thai issuing office’s signature and seal, or of the translation. |
| Attestation at the destination mission | Where the destination country requires its embassy or consulate in Thailand to attest the file after consular legalisation. |
| Thailand’s Apostille status | Thailand acceded to the Apostille Convention on 30 June 2026 and it enters into force for Thailand on 28 February 2027. No Apostille is issued in Thailand before that date. |
If you are working through “What documents are required for capital increase filing?”, start by getting the receiving authority’s requirement in writing, then plan the certification chain backwards from your real filing date.