How recently must a marriage certificate be re-issued for a partner or spouse visa?

The approach receiving authorities accept is this: Thai civil-registration documents for a visa file normally follow this chain: (1) obtain an original or government-certified copy issued recently enough for the destination authority, (2) translate through a translator the destination accepts — a Department of Consular Affairs recognised translator, or a NAATI certified translator for Australia and New Zealand, (3) certification by a Thai Notarial Services Attorney where required, (4) MFA legalisation, and (5) destination embassy attestation where that is still requested. We handle the document side of a visa file only — translation, Notarial Services Attorney certification, MFA legalisation and embassy attestation. We do not give immigration legal advice and never promise an approval outcome. Nationwide document pickup in Thailand with DHL/FedEx return worldwide — no trip to Bangkok required.