Starting
Starting a business in Thailand
Ownership requirements, registration steps, and accounting and tax after incorporation.
Company registration
Accounting, taxand company registrationin Thailand.
Bookkeeping, monthly and annual tax filing,
and company incorporation, all in one place.
Bangkok · Mon–Fri 09:00–18:00 (UTC+7)
Where to start
Running
Running a company in Thailand
Monthly accounting, VAT and withholding tax, year-end, a change of accountant, or books that have fallen behind.
Accounting and tax servicesFrom overseas
Managing a Thai company from overseas
Accounting and tax in Thailand, with reports sent to you or your head office.
Accounting and reportingAbout WMC
Why WMC
WMC is an accounting firm that handles monthly bookkeeping, tax filing and year-end financial statements. We also take care of company registration, changes of directors and shareholders, and related corporate legal work. Our team has more than 10 years of experience in accounting, tax and business law, and is trusted by both Thai and foreign business owners.
One firm for everything, with clear fees from the start
If you are starting a company, already running one or moving from another accounting firm, we first look at your business and the state of your books. Then we propose a scope of work and a fee based on what your company actually needs.
- Know the fee and scope before work starts
- We give you a summary of the scope of work and fees, listing what the fee covers, what is charged separately, the documents you need to provide and the delivery dates.
- Financial reports in English and Thai
- We can prepare your financial reports in English and Thai, so Thai and foreign managers work from the same figures without translating anything themselves.
- Accounting, tax and legal under one roof
- WMC's legal and accounting teams work together on company registrations, such as changes of directors or shareholders, and on your books and tax filings. You do not have to coordinate between an accounting firm and a legal adviser yourself.
- Legal advisers for international business
- Our lawyers draft and review business contracts in Thai and English, structure cross-border investments and advise on corporate law.
- A smooth handover when you switch accounting firms
- We go through your past books and tax filings, then set out each step of the handover from your previous firm. If we find outstanding filings or items that need correcting, we explain your options before we start your monthly bookkeeping.
- Client information stays confidential
- We never name clients, publish their figures or share their business information in our marketing or advertising. We use the information you send us for the work you ask us to do, and disclose it only where that work requires it, with your consent or where the law requires it.
- Audits by licensed CPAs
- The licensed CPAs we work with can audit companies that prepare their own books and financial statements or use another accounting firm. To keep the audit independent, they do not audit companies whose books or financial statements WMC prepares. Those companies appoint a different licensed auditor, and we coordinate with that auditor throughout the audit.
Our services
Accounting and tax
- BookkeepingTransactions, ledger, bank reconciliations and the monthly figures your filings depend on.
- Outsourced accountingMonthly accounting, month-end close and reporting, handled by WMC or shared with your own accounting team.
- Tax filingVAT, withholding tax and corporate income tax returns, prepared and submitted.
- Tax complianceWe track filing deadlines, the records each filing needs and what is still missing.
- PayrollMonthly payroll calculation, employee withholding tax and Social Security information.
- Accounting and reportingMonthly accounting and tax filings in Thailand, with financial reports in English that your head office can read and use.
- Accounting cleanupWe review late or incomplete records and agree a plan to bring them up to date.
- Tax advisoryAdvice on how Thai tax applies to a decision or transaction, before you commit.
Company setup and legal
- Company registrationRegistering a Thai company, including the ownership questions and the accounting setup.
- Corporate administrationCompany records, registration of changes to company details and a compliance calendar to keep filings on track.
- Corporate legalLegal advice and documents for company matters, including share transfers, shareholder agreements and corporate resolutions.
Year-end and audit
- Audit coordinationWe prepare the schedules and documents the auditor asks for and answer their questions directly, so your team does not have to spend time coordinating with them. The auditor appointed by the company gives the opinion on the financial statements.
- Statutory audit supportWhat a statutory audit involves, and how we work with the independent CPA.
How we start
New to WMC
-
Tell us about the company.
Activities, registrations, current records, what you need.
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We review.
Structure, registrations, accounting status and reporting needs.
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We confirm the scope in writing.
Documents, responsibilities, deadlines and the services included.
Moving from another accountant
We start with a review of your prior financial statements, opening balances, tax filings, bank reconciliations and outstanding items. Then we agree the handover scope and a start date. If records are incomplete, cleanup may come first.
How we workFees
WMC sets fees based on the actual work involved. We look at how complex your business is (for example, inventory tracking or overseas transactions), your monthly transaction volume, the tax filings you need and the condition of your existing books. Before we start, we send you a quotation that sets out the scope of work. If anything falls outside that scope, we quote it for your approval first, so there are no hidden fees.
Fee detailsGuides for companies in Thailand
All insights
Updated
Accounting requirements for companies with foreign shareholders
Thai records, annual financial statements, tax filings and reporting evidence.
Updated
Thailand's anti-nominee registration rules, 2026
What registration now asks you to show.
Updated
What happens after a company is dissolved
Records, contracts, bank payments and tax accounts that remain.
Questions about running a company in Thailand
Can a foreigner own a Thai company?
Yes. Foreigners can own shares in a Thai company, and 100% foreign ownership is possible for some businesses. What is allowed depends on the company’s actual activities and the legal route used.
Under the Foreign Business Act, a company registered in Thailand is generally treated as foreign when foreigners hold half or more of its capital. Depending on the activity and legal route, the company may need a Foreign Business Licence or Certificate, BOI promotion, treaty rights or another permission. Separate investment-evidence rules under DBD Order No. 2/2569 may also apply.
Who files VAT and withholding tax for a company with overseas owners?
The company is legally responsible for its own filings, even when someone else prepares them. When you engage us, we prepare and submit them on time, provided we receive your documents by the agreed date. See our VAT guide for registration rules.
What do you send to our finance team overseas?
We handle the Thai accounting and tax filings and send financial reports in our standard format. If your finance team uses its own template, send us a blank copy and we will tell you what we can match.
Does monthly accounting include the audit?
No.. Thai law requires a limited company's financial statements to be audited by an independent CPA, so the audit is charged separately. Your company appoints the auditor, and we coordinate the audit with them. Your quotation lists what we prepare for it.
Contact WMC
Tell us about your company and the services you need. There is no need to send accounting records with your first enquiry.
Office
24 Soi Ekachai 73, Khlong Bang Bon, Bang Bon, Bangkok 10150
Hours
Monday to Friday, 09:00–18:00 (UTC+7)
Phone · WhatsApp · email
+66 97-178-7987 · WhatsApp (opens in a new tab)
business@wmc.co.th