Accounting & Tax

Staying on top of tax deadlines in Thailand is critical for every business, whether you are a local SME or a foreign-owned company. Missing a deadline can result in penalties, surcharges, and unwanted attention from the Revenue Department. This comprehensive guide outlines every key filing date for the 2026 tax year so you can plan ahead and remain fully compliant. Monthly Obligations: Withholding Tax and VAT Every company registered for VAT in Thailand must file a monthly VA

Running a business in Thailand comes with unique financial and regulatory challenges. Whether you are a Thai SME or a foreign-owned company operating under the BOI (Board of Investment), having professional accounting services is not just a convenience — it is a legal and strategic necessity. Legal Requirements for Accounting in Thailand Under the Thai Revenue Code and the Accounting Act B.E. 2543 (2000), all registered businesses in Thailand are required to maintain proper a