Bangkok: Major changes to the VAT filing system are set to take effect on March 1, 2026, with the introduction of a new Form P.P.30 and a shift towards tax refunds processed primarily via PromptPay.

According to Thai News Agency, Ms. Lalida Periswiwatana, Deputy Spokesperson for the Prime Minister's Office, disclosed today that the Revenue Department has announced amendments to the Value Added Tax (VAT) return form, Form P.P.30, along with its attachments. This revised form is designed to provide greater clarity on VAT filing and support tax refunds through PromptPay, effective from March 1, 2026.

The deputy spokesperson highlighted that the update aims to ensure completeness and accuracy in submission information while facilitating electronic processing. Key changes include more detailed address information to enhance the clarity of business owner data, a new item for tax calculation related to supplementary filings, and support for itemized submissions to allow specific updates without affecting other data. Additionally, refunds will primarily be processed via PromptPay, ensuring faster, transparent, and verifiable money transfers. Improvements to the attachment form for supplementary submissions are also part of this revision to support efficient auditing.

The revision is part of a broader plan to modernize the tax system, align with digital transactions, and simplify compliance for businesses. Ms. Lalida emphasized the government's commitment to developing a transparent, modern, and convenient tax system for taxpayers, while also increasing the efficiency of national revenue collection.