Thai taxation is multi-layered: personal income tax, corporate income tax, VAT, withholding tax, specific business tax, and the newer Land & Building Tax all run on different filing calendars enforced by different units of the Revenue Department. Foreign-owned companies that miss this nuance often file the right form on the wrong schedule, or fail to claim BOI privileges in full. Our advisory team builds an annual tax calendar at incorporation so each return lands on time, in the correct bracket, and matched against the incentives the entity actually qualifies for.
For foreign investors, structure design must run in parallel with Thailand's 60+ Double Taxation Agreements, dividend repatriation tax, withholding-tax credit rules, and thin-capitalisation thresholds. We have advised Japanese, US and EU groups on share-class engineering, intercompany management-fee policy and transfer-pricing documentation that meets the OECD arm's-length standard — protecting them from retroactive reassessment under the Revenue Code Section 71 bis.
Our compliance scope covers PND.50/51 corporate returns, PND.1/3/53 withholding returns, PP.30 VAT, PND.90/91 personal returns (including LTR Visa and DTV holders), social security, e-Tax Invoice rollout, and Land & Building Tax declarations to local municipalities. Beyond compliance, we handle tax refunds, ruling requests to the Director-General, BOI Section 31/33/34 privilege filings, and represent clients during desk and field audits.
When disputes reach the Central Tax Court, our litigation bench has filed appeals against assessment notices, VAT refund denials and transfer-pricing adjustments. We embed early in the audit phase — joining meetings with revenue officers alongside the client's CFO and external auditor — so the evidence file and witness statements are aligned with current Supreme Court tax precedent long before the case escalates.
Every engagement is signed by a licensed Thai attorney plus a TFAC-registered tax adviser, with all written advice citing the Revenue Code, Royal Decrees and Director-General notifications in force at the time of issue. This Reviewed-By disclosure is wired into the page's JSON-LD so Google, AI Overviews and ChatGPT can cite our work with full E-E-A-T attribution.
Clients receive a quarterly tax dashboard summarising taxes paid, refunds in progress, audit posture and projected effective tax rate. The dashboard supports CFO board reporting and integrates with our DMS so every supporting workpaper — invoice, contract, transfer-pricing study — sits one click away from the figure on the return.