Practice area
Compare notarial services lawyers in Thailand: signature and document certification, powers of attorney, consular legalisation, and the 2027 apostille change.
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Featured firms
International boutique law firm in Bangkok and Phuket, providing legal and tax services to investors, businesses, and private clients across Thailand
฿4,000–12,000 / hour
Bangkok-based law firm delivering strategic, business-focused legal advice with deep local expertise and a practical, solutions-oriented approach.
฿3,500–15,000 / hour
Top Tier Intellectual Property Law firm specialized in trademark, patent and copyright protection with high expertise in litigation and enforcement.
฿1,500–10,000 / hour
Describe your situation once. Justenda staff can share your inquiry with suitable firms after you confirm your email. No account needed.
The first thing worth knowing is that Thailand never adopted the civil-law notary profession. There is no notary public office to walk into. Instead, Thai lawyers who complete the required training and register with the Lawyers Council of Thailand act as notarial services attorneys, through the Council's registrar office for signature and document certification. A foreign form that says sign before a notary public is satisfied here by one of those lawyers.
The work divides into two halves. One is notary services in the certification sense: confirming who signed a document, certifying copies, and witnessing affidavits and declarations for use in foreign proceedings. The other is drafting, and the document that dominates it is the power of attorney, which is how owners complete Thai property and company matters while they are outside the country.
Certification and drafting are genuinely different services, and it is worth being clear which one you are buying. Certifying a signature confirms who signed it, not that the contents are accurate, lawful, or in your interest.
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International boutique law firm in Bangkok and Phuket, providing legal and tax services to investors, businesses, and private clients across Thailand
฿4,000–12,000 / hour
Bangkok-based law firm delivering strategic, business-focused legal advice with deep local expertise and a practical, solutions-oriented approach.
฿3,500–15,000 / hour
Top Tier Intellectual Property Law firm specialized in trademark, patent and copyright protection with high expertise in litigation and enforcement.
฿1,500–10,000 / hour
International Legal and Cross-Border Business Advisory in Thailand and Asia
Blumenthal Richter Sumet & Schuler is a leading law firm in Bangkok, Thailand. We provide legal services in all practice areas.
Your trusted legal partner in Thailand
Herrera and Partners, is a leading law firm in Bangkok, Thailand. With a dedicated team of skilled and international lawyers in Bangkok.
฿10,000–20,000 / hour
International firm in Asia since 2006 — corporate legal, accounting, advisory and audit services across Thailand, China & the Philippines.
Thai-English speaking law firm in Hua Hin providing family law, business law, real estate, wills, and immigration services.
Documents crossing a border usually need more than a lawyer's certification. The established route adds legalisation by the Department of Consular Affairs, and sometimes certification by the destination country's embassy, in a fixed order that has to be followed or repeated.
That route is changing. Thailand acceded to the Apostille Convention on 30 June 2026 and it enters into force on 28 February 2027, after which a single apostille replaces the legalisation chain for documents used in other member countries. Anything prepared before that date still follows the existing chain, so the timing of a transaction now affects which route applies.
Fees for this work are set by each firm and are not published centrally, and consular fees vary by post rather than being fixed nationally. When comparing firms, compare what the engagement covers: drafting against certification alone, and whether the firm handles the legalisation steps for you or hands the document back at the first stage. This page is general information, not legal advice; for a specific document or transaction, speak with a qualified professional.
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