Check the receiving authority before legalising a document
The Thai Department of Consular Affairs can legalise eligible signatures and seals; its stamp does not itself mean that every foreign authority will accept the document. Ask the receiving office which original or certified copy, language and additional embassy authentication it needs. Thailand deposited its instrument of accession to the Hague Apostille Convention on 30 June 2026, with entry into force scheduled for 28 February 2027. Thai-issued Apostilles are not available as of September 2026. Assess the consular route for the actual destination rather than assuming one chain applies everywhere.

