Whether you're setting up a new company, managing contracts, or navigating Thai immigration rules — we make it straightforward. Grantcas is Bangkok's trusted partner for business advisory, legal, and immigration services.
Grantcas is an independent business advisory and legal firm based in Bangkok, Thailand.
For years, we've helped international companies, expats, and local businesses cut through complexity and get things done properly.
We combine deep expertise in Thai law, business compliance, and immigration with a straightforward, personal approach. No jargon. No runaround. Just clear advice and reliable service from people who genuinely care about your success.
From a quick visa question to setting up your entire operation in Thailand, we're here to help every step of the way.
Practical knowledge of Thai law and regulation.
Straightforward guidance without unnecessary jargon.
A dependable partner as your business grows.
We offer a wide range of services so you can come to us with confidence, whatever you need.
Starting a business, restructuring, or dealing with a legal dispute? We provide practical, experienced guidance tailored to the Thai business environment — so you can move forward with confidence.
We draft, review, and negotiate contracts that protect your interests. Whether it's a partnership agreement, supplier contract, or service agreement, we make sure the details are right.
Thailand has specific licensing requirements for many industries. We handle the paperwork, liaise with the authorities, and make sure your business is fully compliant — without the headaches.
From corporate tax planning to personal income tax for expats, we keep you on the right side of Thai tax law while making sure you're not paying more than you need to.
Planning to live or work in Thailand, or bring in international staff? We manage BOI applications, non-immigrant visas, and work permits from start to finish — efficiently and correctly the first time.
We know legal and business advice can feel overwhelming, especially in a foreign country. We explain things clearly, keep you informed at every stage, and make sure you always know what's happening and why.
Our team has worked in the Thai business and legal landscape for many years. We understand the regulations, the culture, and the practicalities — and we use that knowledge to get things done faster.
Every hour you spend on compliance, paperwork, or legal issues is an hour away from your business. Hand it to us and get back to what you do best.
We're not a large firm where you get passed between departments. When you work with Grantcas, you have a dedicated point of contact who knows your situation and is available when you need them.
We've supported businesses across a wide range of sectors operating in Thailand, including:
Trusted by businesses and professionals who rely on us for clear advice, dependable support, and results they can count on.
We brought Grantcas in to help manage work permits for a growing team of expats. The process is notoriously slow in Thailand, but they handled everything efficiently and kept us updated throughout. I wouldn't go anywhere else.01
I was nervous about managing immigration compliance for our international staff, but Grantcas made it easy. They're knowledgeable, responsive, and the feedback from our expat employees has been fantastic.
Grantcas looks after the work permits and visas for over 50 of our expat staff. That's a significant responsibility, and they handle it with professionalism every time. It gives me real peace of mind.
I use Grantcas for both my business and personal legal needs. It's genuinely reassuring to have one team I trust completely — they always deliver.
Whether you have a quick question or a complex situation, we're happy to help. Get in touch and one of our team will come back to you promptly.
Complete the form below and our team will be in touch.
Find us easily in the heart of Bangkok. Use the map below or open the location directly in Google Maps.
Our team is based at B Square, Rama 9 Mengjai, with convenient access from Pracha Uthit Road.
600/5 B Square, Rama 9 Mengjai, Soi Saha Kan Pramun, Pracha Uthit Road, Wangthonglang, Bangkok 10310
