Thailand's Cabinet approval of the OECD-led Global Minimum Tax exchange signals a shift toward mandatory e-invoicing. The move will require businesses to adopt the ETDA Standard 3-2560 XML schema and meet a 15-day transmission rule. The policy also offers a 200% double-tax deduction and a 1% electronic withholding tax rate until December 2027.

Fitch Ratings warns that Thailand’s medium‑term fiscal framework relies on phased VAT increases that are politically difficult to implement, potentially delaying deficit reduction. The plan targets a 2.1% GDP deficit by FY2030, with VAT rising to 8.5% in FY2028 and 10% in FY2030. Political bargaining within the coalition government could jeopardise these fiscal objectives.

This article explains how Thailand’s VAT rules treat trade and cash discounts, highlighting that only trade discounts granted at the time of sale and without conditions can be excluded from the VAT base. It cites the Revenue Department ruling No. Kor.Kor.0702/6077 (14 Oct 2025) that requires VAT to be calculated on the full selling price for conditional discounts, and notes that no VAT credit note can be issued when a deposit is refunded.