Last updated on August 16, 2026
Looking for professional yet affordable lawyers in Thailand? ThaiLawOnline is a law firm managed by Western experts and licensed Thai attorneys. Our office is in Bangkok and we act for clients throughout Thailand, working with partner lawyers in Chiang Mai, Phuket, Nakhon Ratchasima (Korat) and Ubon Ratchathani, and with cross-border support for Singapore matters.
With more than 20 years of experience in Thailand, our management team has worked with clients from over 30 countries. We connect Western expectations with Thai legal reality. We provide expert guidance in Family Law, Property Law, Wills & Inheritance, and Immigration.
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Legal Services in Thailand: International Expertise, Local Pricing
Legal Services in Bangkok and all over Thailand
Looking for professional yet affordable lawyers in Thailand? ThaiLawOnline is a law firm managed by Western experts and licensed Thai attorneys. Our office is in Bangkok and we act for clients throughout Thailand, working with partner lawyers in Chiang Mai, Phuket, Nakhon Ratchasima (Korat) and Ubon Ratchathani, and with cross-border support for Singapore matters.
With more than 20 years of experience in Thailand, our management team has worked with clients from over 30 countries. We connect Western expectations with Thai legal reality. We provide expert guidance in Family Law, Property Law, Wills & Inheritance, and Immigration.
Why Choose ThaiLawOnline? The “Founder’s Guarantee”
Unlike general legal directories or firms run by local agents, ThaiLawOnline is run by Mr. Sebastien H. Brousseau. He has a law degree (LL.B.) and a science degree (B.Sc.). He is a skilled Canadian lawyer who was admitted to the Barreau du Québec. Mr. Brousseau has practised law since 2000 and has worked under Thai law since 2006.
Sebastien has lived in Thailand since 2004. He has managed well-known law firms since 2006. This includes a former branch of Siam Legal and the founding of ThaiLawOnline. He leads a team of licensed Thai lawyers and notaries. They combine international care standards with local Thai laws.
“My goal is simple: provide the same quality as top-tier Bangkok firms at a fraction of the price by using technology and AI to reduce overhead.” — Sebastien H. Brousseau, Managing Partner
Our Team: Barristers & Specialized Attorneys
We don’t just list names; we list qualifications. Our team includes high-ranking legal professionals capable of handling complex litigation and transactions across the Kingdom:
- Sebastien H. Brousseau (Manager): Canadian Lawyer (Bar of Quebec). Expert in Family & Real Estate Law, with a deep understanding of Thai culture and the Expat experience.
- Wichuda Atthamethakon (Partner): Licensed Thai Lawyer & Notary Public. Holds a Master of Laws (LL.M.). She manages our Isaan and Property operations.
- Garn T. (Partner): Thai Barrister-at-Law & LL.M. A specialist in criminal defense and high-stakes civil litigation.
- Chettaphat S. “JJ” (Senior Associate): Specialist in Bangkok Civil Court proceedings and dispute resolution.
Nationwide Coverage: Not Just Bangkok
While many firms act only in the capital, we represent clients throughout Thailand. We have one office, in Bangkok. Everywhere else we act through partner lawyers and by travelling to you, which is why we do not charge you for a branch you never visit:
- Bangkok (our office): Central litigation, corporate registration, and immigration.
- Isaan (Nakhon Ratchasima & Ubon Ratchathani): Family law and rural land transactions, through partner lawyers and on-site visits.
- Chiang Mai & Phuket: Real estate and expat services, through partner lawyers and on-site visits.
- Singapore: Cross-border estate planning and notarisation, handled from Bangkok with local counsel where required.
Transparent Fee Comparison: Why We Are The Smart Choice
Most “Tier 1” international law firms in Bangkok charge rates upwards of 10,000 THB per hour. We use modern legal technology and AI to make our work easier. This helps us save money and pass those savings to you. We do this without lowering our quality.
| Service | How it is usually charged | Our fee |
| Last Will & Testament | Hourly, or quoted only after an enquiry | 3,900 THB fixed |
| Prenuptial Agreement | Hourly, or quoted only after an enquiry | 8,900 THB fixed |
| Consultation (1 hour) | Hourly, rates rarely published | 2,000 THB |
| Living Will | Hourly, or quoted only after an enquiry | 1,900 THB fixed |
| Last Will + Living Will together | Rarely offered as a package | 5,000 THB fixed |
Our fees are published in full on the pricing page and are fixed, not estimates. We do not quote other firms’ prices here, because a fee you cannot verify is worth nothing to you when you are comparing.
Our Core Legal Services
1. Family Law & Marriage
Family matters require sensitivity and legal precision. We handle:
- Prenuptial Agreements: Drafted in Thai and English to ensure global enforceability.
- Uncontested divorce at the Amphur or contested court litigation.
- Child Custody: Legalization of father’s rights and custody disputes.
- Complete assistance for foreigners marrying Thai nationals.
2. Property & Real Estate
Protect your investment with our rigorous due diligence.
- Secure 30-year leases with renewal options.
- Usufructs: Lifetime usage rights registered on the title deed.
- Owning the structure separate from the land.
- Title deed checks and land office verification before you pay.
3. Estate Planning (Wills)
- Last Will & Testament: Essential for any expat with assets in Thailand.
- Living Wills: Directives for end-of-life medical care.
4. Corporate & Business
- Company Registration: Setting up Thai Limited Companies.
- Tax incentives for eligible business activities.
- Work Permits: Processing for employees and business owners.
5. Litigation & Notary
- Criminal & Civil Litigation: Representation in all Thai courts by Barristers.
- Notarial Services: Verification of signatures and documents for international use.
The Future of Law: Tech & AI Integration
We are not just a law firm; we are a tech-forward legal provider. Led by Sebastien H. Brousseau, ThaiLawOnline uses AI to create standard contracts. This process is faster and more accurate than traditional teams. We are the only firm in Thailand that provides high-quality legal documents. This is possible because of our efficiency. Our prices are competitive.
Start Your Legal Journey
Don’t just take our word for it. Our manager has hundreds of endorsements on LinkedIn, proving a reputation built on trust since 2004.
Ready to resolve your legal matters?
- Book an Online Consultation (Video call available).
- Call us: +66 (0) 87 225 1340 (Eng/Fr) or +66 (0) 87 414 9288 (Thai).
- Line ID: (English/French)
Different fields with specialist to help you out.
Family Law Services in Thailand
Family matters can be complex in a cross-cultural setting. Our family law team guides you through life’s important events with sensitivity and expertise. We handle all aspects of Thai family law, including:
- Prenuptial Agreements – starting from 8,900 THB. We draft robust prenups in Thai and English and register them correctly at marriage to ensure legal enforceability.
- Marriage Registration – We handle paperwork, translations, and legal formalities to validate marriages under Thai law.
- Divorce & Child Custody – We assist in uncontested divorces, contested divorce representation, and custody/support negotiations.
Property Law & Real Estate in Thailand
Thailand’s property laws can be tricky – especially for foreigners. ThaiLawOnline offers expert guidance in property and real estate law:
- Lease Agreements & Usufructs – We prepare contracts to grant enforceable usage rights for up to 30 years.
- Condo & Land Purchases – We do due diligence, title deed checks, and contract review.
Wills and Inheritance – Estate Planning
- Last Will and Testament – Starting at 3,900 THB. Drafted in Thai and English to legally distribute your Thai assets.
- Living Wills & Estate Planning – Ensure medical wishes and inheritance plans are respected.
Corporate & Business Law
- Company Registration – Thai limited company, BOI, and partnership setups.
- BOI Applications – For foreign-owned startups or investors.
- Contract Drafting & Compliance – Business contracts, NDAs, employment agreements, and regulatory filings.
Immigration & Visa Services
- Visa Assistance – Marriage, retirement, business, education, and digital nomad like DTV, visa help.
- Work Permits – Individual or company-sponsored work permits.
Criminal and Civil Litigation in Thailand
- Litigation Services – Representation in civil, criminal, and business disputes.
- Mediation & Negotiation – Alternatives to court when applicable.
Notarial Services (Onsite & Online)
- Notary Services – From 950 THB. Powers of attorney, certified true copies, affidavits, and identity confirmation.
- Online Notarization – Remote legal certification via video call.
Contracts & Document Drafting
- Loan Agreements, Vehicle Sales, Mortgage Contracts.
- Power of Attorney and custom agreements reviewed by senior lawyers.
Start Your Legal Journey with ThaiLawOnline
Ready to resolve your legal matters with confidence? ThaiLawOnline is here to help. Contact us for online consultations (30 minutes for 1,000 THB). We offer in-person or secure video appointments and serve clients in Bangkok, across Thailand, and internationally. Let ThaiLawOnline be your trusted partner for legal services in Bangkok – affordable, professional, and effective.
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