Apostille vs. Embassy legalisation for Thailand
The two routes do the same job by different means. Consular legalisation stacks stamps: the Italian state vouches for the signature, then the destination's mission in Italy vouches for the Italian state. An apostille collapses that into one certificate every member country agrees to read. For Thailand the stacked version is still the working one, so a Bari file leaves with two stamps rather than one.
Thailand's Hague status and what it means
Thailand's accession is recorded with the year 2027, and the Convention enters into force there on 28 February 2027. A signature is not the same as a start date, and the gap between them is what this page is about. Until the start date arrives, an apostille from Italy to Thailand carries no weight at a Thai counter. The apostille requirements for Thailand are simply not in play before then.
The Bari to Thailand route step by step
The order is fixed and each stage depends on the last. A certified original comes out of the issuing office in Bari. The Prefettura or the Procura della Repubblica then legalises the signature on it, against a €16 tax stamp per document. The bundle travels next to Thailand's embassy or consulate in Italy, which adds the consular stamp. Only after that stamp is on does the paper mean anything to an office in Thailand.
Cost and timing for this route
Budget for two fees and one long wait. The €16 marca da bollo is the Italian charge and some records are exempt from it; the consular charge belongs to Thailand's mission, and an official fee applies there. Because 28 February 2027 is still some way off, nearly every file raised from Bari this year will pay both. Documents that are renewed regularly will run the chain more than once before the switch.
What Thailand asks of an Italian document
Two things travel with a Thai file. The text usually has to be readable in Thai, so a sworn translation joins the bundle before the stamps rather than after; document legalisation for Thailand therefore has a language step built into it. The mission also wants a paper that is intact, with a signature the Italian office can match against what it holds. Name the end use when you order the copy, because that shapes which record you need.