Monchai Varatthan is a senior tax lawyer with nearly 30 years of experience advising clients on complex tax and regulatory matters. His practice focuses on tax advisory, tax-driven mergers and acquisitions, and tax dispute resolution, including tax investigations, appeals, and litigation.
He advises on both direct and indirect taxes, covering personal and corporate income tax, value added tax, customs duties, excise tax, and stamp duty. He is highly regarded for his work with multinational companies, providing strategic advice on cross-border structuring, investments, and the legal and tax implications of operating in multiple jurisdictions.
His transactional experience includes conducting tax due diligence for share and asset acquisitions, mergers and amalgamations, whole or partial business transfers, joint ventures, and other M&A transactions. Leveraging his legal background as a licensed lawyer, Monchai can both advice on and implement tax and corporate structuring projects, including the drafting and negotiation of tax-related legal agreements and documentation.
In addition, Monchai represents clients in tax disputes before the Revenue Department and the Tax Court, covering a wide range of direct and indirect tax matters, including double taxation issues and trade remedy measures such as anti-dumping and safeguards. He also lectures at universities and regularly speaks at professional tax forums, including those organised by the Inter-Pacific Bar Association (IPBA).