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MSNA Group 65/62 Chamnan Phenjati Business Center, 6/F, Rama 9 Road, Bangkok.
Mon - Fri: 7AM – 4PM

Reliable world-class services

Our clients know how good we are. They are global companies or SMEs owned or managed by foreigners, including the American Chamber of Commerce and the Canadian Chamber of Commerce in Thailand.

Why choose MSNA

We have been the official accountant of the American Chamber of Commerce in Thailand for over 10 years. See our representative clients here

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Due diligence for M&A

We provide both financial due diligence and legal due diligence at reasonable local prices.

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Thailand BOI company registration

Is one of the ways for foreigners to own 100% of their Thai business.

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Welcome to MSNA Ltd. an English Speaking Thai Accounting Company for SME in Bangkok, Thailand

If you are looking for a Thai accounting firm in Bangkok Thailand that provides accounting service, taxation service, audit service, due diligence service, payroll service, company set-up, and work permit service, you have come to the right place. We also provide human resource outsourcing and US tax returns services.

We are the Thai accounting firm that handles accounting for the American Chamber of Commerce in Thailand (AMCHAM) and the Thai-Canadian Chamber of Commerce.

Finding a Bangkok accounting company is not difficult. Finding a good Bangkok accounting company is not hard. That depends on how you define “good”.

At MSNA, we are a professional Thai accounting company in Bangkok with Thai CPA’s who speak fluent English providing Thai accounting service in English in compliance with Thai Accounting Standards (or some calls it Thai GAAP) and Thai Accounting Law. We also provide Thai audit service in compliance with Thailand Auditing Standards.

MSNA group of companies, established in 1996 in Bangkok, provide Thai accounting services in English to foreign and Thai SME’s with foreign ownership or management. Our competence, professionalism, knowledge and experiences have secured us a loyal base of clientele including the American Chamber of Commerce in Thailand (AMCHAM) and the British Chamber of Commerce Thailand (BCCT). Please see our representative clients here.

On this website, you can find useful Thailand Business and Company Information;

Thailand Business Setup Process : describes essential steps and things for foreigners to consider when trying to establish a business operation in Thailand.

Thailand Business Forms : describes the most practical forms of business set-up that foreigners should consider when doing business in Thailand.

Representative Office : describes the characteristics and scope of services of the business that can get a Foreign Business License to operate as a representative office in Thailand.

Thailand Company Registration Process : provides information of the steps involved in registering a limited company in Thailand.

Thailand BOI : discusses Thailand Board of Investment’s incentives and privileges and the activities eligible for BOI promotion. Check out new Thailand BOI benefits that took effect on 1 January 2015.

Thailand Foreign Business Law : Read our summary of Thailand’s foreign business law that is clear and easy to understand.

Treaty of Amity between Thailand and USA : discusses an agreement between the United States and Thailand which aims to promote trade, commerce, cultural understanding and reciprocal legal rights between the countries.

Thailand Work Permit – Process : walks you through the process of how to apply and documents needed for a Thai work permit. The foreign exployee can apply for one when he is in the country or the employer can apply for one on behalf of the foreign employee before he enters Thailand.

Thailand Work Permit Rules : gives you a general idea of Thailand Work Permit rules, things to keep in mind regarding a work permit in Thailand.

Thailand Labour Law : describes Thailand labour law in brief.

MSNA’s Thai accounting service includes bookkeeping, financial reporting, accounting staff training, accounting software training, cashier service, etc. All our accounting services are provided by Thai accountants and supervised by Thai CPA (certified public accountants). According to the Thai Accounting Law, your company’s books need a Thai accountant to sign off and our Thai accountants are licensed to do that.

MSNA’s Thai audit service is provided by CPA’s in accordance with Thailand Auditing Standards. Your Thailand company needs a Thai CPA to audit the books and the financial statements before you submit the audited financials to the authorities in Thailand.

MSNA’s Thai tax service includes tax planning, tax return preparation and tax filing all in compliance with the Thai Revenue Codes and also negotiation with the tax authority (Revenue Department). Your monthly withholding tax and VAT (Value Added Tax), interim and annual corporate income tax returns are prepared by our experienced Thai accountants who are closely supervised by senior CPA’s at our Bangkok office.

If you are planning to acquire a company in Thailand, MSNA is the perfect provider of due diligence service.

We also help prepare and file foreigners’ income tax in Thailand. Foreigner income tax service is mainly assisting foreigners to prepare and file their Thai income tax return.

US tax return service is provided by our US tax team lead by American CPA assisting Americans living in Thailand prepare and file their US income tax returns.

MSNA’s payroll service includes employee income tax calculation, preparing pay slips, handling payroll payment, personal income tax returns, dealing with the Social Security Office and Thai Labour Law consultancy.

MSNA provides all solutions for your doing business in Thailand. You can outsource your Personnel Department to us. With our Human Resource Outsourcing Service, we recruit Thai and foreign employees for you, take care of the foreign emplyees’ work visas and work permits in Thailand and process their payroll.

MSNA’s Thailand work permit service includes consulting on getting business Visa and Work Permit for farangs (foreigners) working in Thailand as well as the related applications preparation. We help our clients understand the Thai Labour Law and Thailand Work Permit rules and regulations.

MSNA’s Thailand company registration service includes company set-up, foreign business establishment and Treaty of Amity company registration (operating American business in Thailand under the Treaty of Amity and Economic Relations between the United States of America and the Kingdom of Thailand). We also provide consultancy on Thailand Foreign Business Law.

We service mostly in Bangkok and the provinces near Bangkok.

If you have any questions regarding Thailand accounting services by English speaking Thai accountants and Thai CPA or about Thailand company registration or Thailand work permit, please email us at


“MSNA has been a terrific partner through the years handling our accounting, tax filings, keeping us compliant and is very responsive to our needs. I have nothing but the best to say about them.”

Nick Margarites, VP Finance – Sourcefire, Inc, now part of Cisco.



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