Corporate documents: translation, certification and the correct legalisation order for overseas use
Short answer
Thai corporate documents used overseas — company affidavit, shareholder list, memorandum and articles, and financial statements — normally start with a freshly issued certified extract from the Department of Business Development. The set is then translated, the translation is certified by the Department of Consular Affairs, and where the destination country requires it, legalised by that country's embassy in Thailand. Documents used in Australia usually require an English translation from a NAATI certified translator. Assembly typically takes 2–5 business days, excluding authority queues.
Key facts
| Documents most often needed | Company affidavit of registration · shareholder list · memorandum and articles of association · audited financial statements and VAT registration · corporate power of attorney · employment certificates. |
|---|---|
| Document age | Most receiving parties accept a company affidavit issued within the last 3–6 months, so obtain a fresh extract before any translation begins. |
| Outbound certification order | Certified extract from the Department of Business Development → translation → translation certification by the Department of Consular Affairs → destination embassy where required. |
| Documents used in Australia | Australian authorities and financial institutions commonly require an English translation from a NAATI certified translator, and in many cases no embassy step. Confirm with the receiving party first. |
| Director signatures | A corporate power of attorney must be signed by the directors authorised in the company affidavit, with the company seal where the articles require it. |
| Indicative timing | 2–5 business days for translation and assembly depending on page count · certification and embassy steps follow each authority's service rounds. |
Documents usually required
Freshly issued company affidavit
Obtained from the Department of Business Development, showing objectives and the directors authorised to bind the company, as required by the destination.
Shareholder list
Evidences the ownership structure; many countries ask for the most recent version filed with the Department of Business Development.
Memorandum and articles of association
Needed where the destination checks signing authority and business scope. Translate every clause including schedules.
Financial statements and VAT registration
Used for tenders, account opening and business visas. Use the audited version where the destination requires one.
Corporate power of attorney
Names the attorney, the scope and the period, signed by the authorised directors with the seal where the articles require it.
Identity documents of the signing directors
Confirms the signatories and keeps the spelling in translations consistent with their identity documents.
Step by step
1) Confirm the document list with the receiving party
Establish exactly which documents are wanted, how recently issued, in which language, and whether embassy legalisation is required, then work from that written list.
2) Obtain certified extracts from the Department of Business Development
Order a current company affidavit and shareholder list, and check that the registered English company name matches the name used in your contracts.
3) Translate with a translator the destination accepts
Translate the full document including stamps, use the registered English company name rather than inventing one, and keep terminology consistent across every document in the set.
4) Certify the translation and legalise where required
Lodge the translation with the Department of Consular Affairs, then with the destination country's embassy where that country requires it. Do not skip a step: embassies generally refuse documents without the consular stamp.
5) Deliver and retain a spare set
Hand over originals with high-resolution scans of every page, and keep a spare certified set for the next lodgement so you do not repeat the whole chain.
Why sets get returned
- Using a company affidavit older than the destination's accepted window
- An English company name that differs from the registered name
- Signature by a director not authorised under the affidavit's signing conditions
- Going straight to the embassy without consular translation certification
- Leaving signing-condition pages or end-of-document stamps untranslated
- Inconsistent terminology across the set, making the documents look like different entities
Prefer not to manage it yourself?
Corporate document work is expensive to get wrong: one rejection usually means reordering extracts and losing a certification round. Our team has advised on cross-border documents for more than 15 years, sequencing the whole chain from extract to translation, consular certification and embassy legalisation, and keeping company names and terminology consistent across every document in the set.
Frequently asked questions
Do I need a new company affidavit every time?
In practice yes for any significant lodgement, because most overseas authorities and counterparties accept only an extract issued within the last 3–6 months, and directors or capital may have changed. Using an old extract usually means restarting the whole certification chain.
Do Thai corporate documents used in Australia need embassy legalisation?
Often not. Australian authorities and banks commonly accept an English translation produced by a NAATI certified translator. Court filings and some regulators impose extra layers, which can involve consular certification and embassy legalisation, so confirm the requirement with the receiving party before you start.
Can we translate the company name ourselves?
No. Use only the English name registered with the Department of Business Development. If the company has no registered English name, consider registering one before starting international document work, because inconsistent names across documents are a frequent rejection reason.
Can an apostille replace embassy legalisation for Thai documents?
Check the status and entry-into-force date with the Department of Consular Affairs each time, and confirm that the destination accepts that format for your document type. During a transition period some receiving authorities still follow their previous embassy practice.
Should financial statements be audited before translation?
Where the destination assesses financial standing it usually requires audited statements signed by a licensed auditor. Finalise the audit first: translating a draft and then changing figures means translating and certifying the whole set again.
Can a generic form be used for a corporate power of attorney?
Often yes, provided the scope, period and attorney are clearly stated and the document is signed by directors authorised under the affidavit. Where the destination is a government body or bank, request their own form to reduce the risk of refusal.
Do company seals have to be translated?
Yes. Every stamp and seal appearing on the document, including the issuing authority's, must be translated or described. A translation that skips seals is incomplete and can be refused at the certification stage.
Can one set be used for several countries at once?
Only if you prepare multiple sets from the start, because a legalised set is usually retained by the receiving party. Order as many source extracts as you need and run the certification chains in parallel; it is considerably faster than repeating the process country by country.
Reviewed 13 August 2026. Always confirm the current requirement with the receiving authority before you lodge.