No.1 Law Firm in Phuket
Khonsu Legal recognised as a leading full-service firm for foreign investors navigating Thai business law.
Read the articleProfessional corporate services
in Thailand.
A complete suite of corporate, legal, accounting, tax and immigration services for doing business in Thailand — company formation and BOI, M&A and due diligence, corporate secretarial and compliance, accounting, tax and payroll, work permits and visas, and real estate — delivered end-to-end by our in-house team.
5.0 ★155+ Google
reviews
reviews
1,000+Successful
client matters
client matters
63+Countries
served
served
4languages
EN · TH · DE · RU
EN · TH · DE · RU
What we do
A full-service corporate, legal and accounting firm in Thailand.
Four practice areas, one multilingual team. From the first conversation about your business to the day-to-day filings that keep it running, you have a single point of contact.
Most requested
The services clients ask for most often
Each of these has a dedicated page with scope, process, and FAQs.
Company Registration
Register your Thai company with the right structure — including 100%-Thai, joint-venture, BOI, FBL, and Treaty of Amity options.
Learn moreBOI Promotion
Apply for Board of Investment promotion — tax holidays, foreign ownership, and visa privileges for qualifying activities.
Learn moreWork Permit & Business Visa
Non-B visas, work permits, and dependant visas for employees and company directors operating in Thailand.
Learn moreAccounting & Tax Packages
Monthly bookkeeping, VAT/PND filings, annual audit coordination, and corporate tax planning.
Learn moreReal Estate Transactions
Condo freehold purchases, leaseholds, commercial transactions, and full real-estate due diligence.
Learn moreDisputes & Litigation
Corporate and real-estate disputes — mediation first, court representation when needed.
Learn more
What our clients say
Real engagements, in our clients' own words
Verbatim excerpts from our clients' verified Google reviews, shown under the names they posted publicly. Read the full reviews above.
"They demonstrated deep expertise in company formation and work permit procedures, ensuring everything was handled efficiently and precisely — truly like a Swiss watch. Every step was smooth, with no delays or complications."
"The team managed everything for me — they reviewed the agreement, explained the important points in simple words, and made sure the contract was safe to sign. … Definitely made the whole process stress free."
"The Khonsu Legal team registered our company; Andy guided my visa/work permit, and accountant Khun Fern set up clean monthly books. English was crystal clear, timelines accurate, and updates proactive. Reliable one-stop partner."
"A highly professional and well-organized firm. Their team operates with great attention to detail and a clear understanding of local business practices. I highly recommend their services to anyone seeking reliable legal guidance or looking to establish or manage a business in Phuket."
"The best service in Phuket. At every stage you will be advised by a personal manager."
In the press
Independently ranked and featured
The Thaiger and CleverThai rankings span our Phuket and Bangkok work, alongside our verified Lawzana directory profile — Khonsu serves clients across Thailand, and the recognition speaks to the quality of our work.
No.1 in CleverThai's Top 5 Phuket law firms
Editorial recognition for service quality, transparent terms, and multilingual delivery.
Read the reviewNo.2 Property Law Firm in Bangkok
Listed among Bangkok's top property lawyers for foreign buyers — condo purchases, due diligence, and title transfers.
Read the articleNo.3 Law Firm in Thailand
Ranked among Thailand's top law firms on Lawzana's independent directory, with verified client reviews.
View rankingNo.2 Law Firm in Phuket
Ranked among Phuket's top law firms on Lawzana's independent directory, with verified client reviews.
View rankingNo.3 Law Firm in Bangkok
Ranked among Bangkok's top law firms on Lawzana's independent directory, with verified client reviews.
View ranking
Why Khonsu
Built for businesses and investors in Thailand.
Multilingual from day one
All client communication, contracts, and filings are handled in both English and Thai. German and Russian available on request.
Integrated services
Legal, accounting, and immigration under one firm. No hand-offs between agencies, no gaps in responsibility, no finger-pointing when something goes wrong.
Transparent process
You always know what's being done, why it's being done, and what comes next. Clear scope. Named contacts. No surprise invoices.
Thailand-wide coverage
Full-service offices in Bangkok and Phuket. We serve clients wherever their business or investment is located in Thailand.
Ready to take the next step?
Schedule a consultation with our multilingual legal and accounting team.