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VAT refunds · promoted companies

BOI-promoted companies: same VAT refund process, three things that differ

In short

Holding investment promotion does not mean a separate VAT refund process — the forms, the filing rules and the eligibility test for the accelerated track are the same ones ordinary companies use. What actually differs are three things: duty-free imports don't exempt local purchases from VAT, the credit balance tends to build up structurally larger, and duty-free import data has to reconcile with what the project reports under its BOI monitoring obligations.

01The process itself is the same

Whether a company claims a refund through the monthly return or files a separate claim, promoted and ordinary companies use the same form and the same rules. A company wanting faster payment can apply for Good Exporter status to access the accelerated track — but that status is assessed on paid-up capital and export ratio, not on whether the company holds a promotion certificate. A company with no promotion status but a high enough export ratio can qualify; a promoted company that doesn't meet the threshold does not get fast-tracked either.

02Duty-free import does not mean VAT-free

This is the easiest thing for a promoted company to misread. Promotion relieves import duty on machinery and materials, and the import VAT that would otherwise apply at the same point is relieved alongside it — but that relief covers only the import leg. Once the machinery and materials are on site, VAT on local purchases — services, local components, utilities — is due the same way it is for any other company, and just as recoverable. Read "duty-free on import" as "VAT-free across the board" and the local input VAT that could have been claimed back sits unclaimed, year after year.

03Why the credit balance tends to run larger

Export sales are zero-rated, so output VAT is close to nil regardless of promotion status. For a promoted company, the import side produces little or no input VAT either, because the imports are duty- and VAT-exempt — which leaves local purchases as the only source of input tax. Put those together and a promoted exporter's business structure tends to accumulate a larger credit balance than a comparable company selling domestically. That is a feature of the business model, not a sign the books are wrong — and it is worth sizing before assuming your numbers should look like an ordinary company's.

04One more thing to reconcile: monitoring data

A project with duty-free machinery or material imports carries an additional compliance obligation: reporting usage against the approved list under BOI's monitoring requirements. That reporting and the import VAT data filed with the Revenue Department are supposed to agree. When they don't, the refund review tends to raise extra rounds of questions — a check that ordinary companies never have to deal with. Reconciling the two before filing, rather than waiting to be asked, is worth doing as a matter of course.

All three points come down to the same thing: a promoted company is not on a different track, but it does carry a few extra things worth clearing up before it files. Back to the general VAT refund mechanics.

Related

Sources

  1. Board of Investment (BOI) OSOS official FAQ: VAT treatment for promoted companies is the same as for non-promoted companies; import VAT is relieved alongside import duty when machinery or materials are duty-exempt, and refunds are still handled by the Revenue Department. Checked 2026-06.
  2. Board of Investment (BOI): Investment Promotion Guide, June 2026 edition, page 6 (the Investment Monitoring Division's e-Monitoring and utilization-reporting function for approved machinery/material lists) and page 11 (scope of import duty exemption on machinery and materials).
  3. Revenue Department (RD): Good Exporter accelerated-refund criteria, based on paid-up capital and export ratio rather than promotion status, and the general rules on export zero-rating and input VAT credit refunds. Checked 2026-06.
  4. General note: this page does not estimate any company's recoverable amount, review outcome or time to payment; case-specific conclusions must be verified against duty-free import records, BOI monitoring filings and the accounts by our advisers.
Checked against the official texts by the CTAC Thailand advisory team. We track the gazettes of the BOI, the Revenue Department, the Department of Business Development and Thai Customs every week; when an official position changes, the affected pages are updated and dated.
This page is general information based on the rules in force at the date shown. Thai BOI categories, incentive conditions and foreign-investment rules change often. Before acting on any specific project, check the latest official announcement and have a formal opinion issued on your own facts.
This is work you can hand to the advisory team

VAT refund assessment for BOI-promoted companies: reconciling monitoring data, sizing the credit balance, document preparation and filing. You confirm and decide.

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