ACCOUNTING

PAYROLL

LEGAL

ACCOUNTING

ACCOUNTING

PAYROLL

LEGAL

ACCOUNTING

Handle everything — from Thai company setup, visas, payroll to tax filing and VAT registration. Fast and efficient.

To connect with our experts, please fill out this form.

COMPLETE THE FORM

EXPLORE SERVICES

EXPLORE SERVICES

Or talk to us directly +66 2 392 9645-46

Or talk to us directly +66 2 392 9645-46

ACCOUNTING SERVICES

ACCOUNTING SERVICES

ACCOUNTING SERVICES

- Accounting & Tax packages
- Bookkeeping
- Annual audit
- Half-year report
- Cash management
- Issuance of documents
- Fillings.
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- Accounting & Tax packages
- Bookkeeping
- Annual audit
- Half-year report
- Cash management
- Issuance of documents
- Fillings

- Accounting & Tax packages
- Bookkeeping
- Annual audit
- Half-year report
- Cash management
- Issuance of documents
- Fillings
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-

VISA & IMMIGRATION

VISA & IMMIGRATION

VISA & IMMIGRATION

- Work permit
- One-year business visa
- Business visa extension
- Investment visa
- Four-year smart visa
- Marriage visa
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- Work permit
- One-year business visa
- Business visa extension
- Investment visa
- Four-year smart visa
- Marriage visa
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THAI COMPANY SETUP

THAI COMPANY SETUP

THAI COMPANY SETUP

- Limited company
- BOI company
- Representative office
- Branch office
- Regional office
- Regional operational HQ
- Non-profit foundation
- Registered address
- Virtual office address

- Limited company
- BOI company
- Representative office
- Branch office
- Regional office
- Regional operational HQ
- Non-profit foundation
- Registered address
- Virtual office address

CORPORATE SERVICES

CORPORATE SERVICES

CORPORATE SERVICES

- Corporate secretarial
- Company dissolution
- Foreign business license
- Business licenses
- Intellectual property
- Trademark
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- Corporate secretarial
- Company dissolution
- Foreign business license
- Business licenses
- Intellectual property
- Trademark
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- Corporate secretarial
- Company dissolution
- Foreign business license
- Business licenses
- Intellectual property
- Trademark

LEGAL

LEGAL

LEGAL

- Notary
- Legal documents translation
- Power of Attorney
- Arbitration

- Notary
- Legal documents translation.
- Power of Attorney.
- Arbitration.

PAYROLL & HR

PAYROLL & HR

PAYROLL & HR

- Monthly payroll
- HR Administration
- Year-end returns and tax filings
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- Monthly payroll.
- HR Administration.
- Year-end returns
and tax filings.
-

To connect with us

Complete the form

To connect with us

Complete the form

FOR THAI PEOPLE AND FOREIGNERS

FOR THAI PEOPLE AND FOREIGNERS

FOR THAI PEOPLE AND FOREIGNERS

Get a quick overview of Thai business and accounting in our tutorials. 🇹🇭

Get a quick overview of Thai business and accounting in our tutorials. 🇹🇭

Planning to work in Thailand? Whether you’re considering teaching, freelancing, starting a business, or joining a local company, there are a few essential legal requirements you must secure before beginning any professional activity in the country. Learn about them here.

Planning to work in Thailand? Whether you’re considering teaching, freelancing, starting a business, or joining a local company, there are a few essential legal requirements you must secure before beginning any professional activity in the country. Learn about them here.

Planning to work in Thailand? Whether you’re considering teaching, freelancing, starting a business, or joining a local company, there are a few essential legal requirements you must secure before beginning any professional activity in the country. Learn about them here.

Feb 27, 2023

Setting up a company in Thailand? In 2025, it’s actually easy — but still requires precision. A private limited company remains the top choice for foreign investors. Here’s our guide to get you up and running without the legal headaches.

Feb 27, 2023

Setting up a company in Thailand? In 2025, it’s actually easy — but still requires precision. A private limited company remains the top choice for foreign investors. Here’s our guide to get you up and running without the legal headaches.

Feb 27, 2023

Setting up a company in Thailand? In 2025, it’s actually easy — but still requires precision. A private limited company remains the top choice for foreign investors. Here’s our guide to get you up and running without the legal headaches.

CHECK OUR CLIENT REVIEWS

CHECK OUR CLIENT REVIEWS

Get company setup and manage your business with ease

Get company setup and manage your business with ease

Daniël

@dvdwinden

Special thanks to K Noi for their valuable assistance. We completed the annual audit and they were managing accounting tasks effectively.

Mani

@BeingMani97

Great accounting

Dann

@DannPetty

I used this accounting service for my coffee shop, and it was pretty smooth. They took care of payroll without any glitches, and the financial reports they sent over were clear and even had some useful tips for cost-cutting. Everything was on time, which really saved me a lot of stress. Just sharing my experience if anyone’s in the same boat.

It’s close to Udom Suk BTS. The staff is very friendly and professional.

I used this accounting service for my coffee shop, and it was pretty smooth. They took care of payroll without any glitches, and the financial reports they sent over were clear and even had some useful tips for cost-cutting. Everything was on time, which really saved me a lot of stress. Just sharing my experience if anyone’s in the same boat.

It’s close to Udom Suk BTS. The staff is very friendly and professional.

Davo

@pixelbeat

Very helpful and polite staff

Manoj

@manojnayak

Nok it's very professional and courteous. She does many things but she helped me with my long-term visa. I would highly recommend her.

Fekry

FekryAiad

If you’re a foreigner tryna do this, don’t. Get real help. Trust me on this one.

totally recommend SIAC from me!

Thought I could just register a biz in Bangkok & get a visa and work permit myself. LOL. Biggest mistake ever. 😂 turned out as total chaos, one person says one thing, another says the opposite, and there’s always one more document nobody told you about.

Eventually had to give up. My colleague from regular job, recommended this accounting firm, cause he had accounting done by SIAC.

Now I’m satisfied with the business registration package, their team actually knows what they’re doing.

Also, I got visa/permit without losing my mind and tons of money. Thanks

If you’re a foreigner tryna do this, don’t. Get real help. Trust me on this one.

totally recommend SIAC from me!

Thought I could just register a biz in Bangkok & get a visa and work permit myself. LOL. Biggest mistake ever. 😂 turned out as total chaos, one person says one thing, another says the opposite, and there’s always one more document nobody told you about.

Eventually had to give up. My colleague from regular job, recommended this accounting firm, cause he had accounting done by SIAC.

Now I’m satisfied with the business registration package, their team actually knows what they’re doing.

Also, I got visa/permit without losing my mind and tons of money. Thanks

ADDRESS:
40 Sukhumvit 101/2 Alley,
Bang Na Nuea, Bang Na District,
Bangkok 10260, Thailand

ADDRESS:
413 Complex, 33 Jomtien Second Rd,
Muang Pattaya, Bang Lamung District,
Chon Buri 20150, Thailand

CONTACTS

CONTACTS

Connect with us via email or phone

Connect with us via email or phone


Entity Name: Siac Consulting Co., Ltd.

Entity Registration Number: 0105549102225
MOBILE: +66 2 392 9645-46
EMAIL: info@siacthai.com
LINE: @siacthai


Entity Name: Siac Consulting Co., Ltd.

Entity Registration Number: 0105549102225
MOBILE: +66 2 392 9645-46
EMAIL: info@siacthai.com
LINE: @siacthai

© 2025 Siac Consulting Co. Ltd

© 2025 Siac Consulting Co. Ltd

© 2025 Siac Consulting Co. Ltd