Proponents of the law called the event "a monumental step forward for LGBTQ+ rights".

The Senate voted overwhelmingly to pass the bill after a final reading, with 130 senators voting in favor and four lawmakers opposing it.

The bill still requires royal approval before marriage equality is possible in Thailand, but that process is considered a formality. The law will take effect 120 days after publication in the Royal Gazette.

The vote means Thailand will become only the third place in Asia to allow marriage equality, after Taiwan legalized same-sex marriage in 2019 and Nepal in 2023.

"The bill is a huge step forward for LGBTQ+ rights in Thailand. The potential impact of this bill is huge. It would not only change the lives of countless couples, but also promote a fairer society for all", said Panyaphon Phiphatkhunarnon, founder of Love Foundation, a non-governmental organization that campaigns for LGBTQ+ equality in Thailand.

The bill gives LGBTQ+ couples the same legal rights and recognition as heterosexual couples, including rights to inheritance, adoption and health care decisions.

"Besides the legal implications, the passage of this bill will send a powerful message of acceptance and inclusion. It will inspire the younger generation to come out and live authentically, it will showcase Thailand as a progressive and inclusive country that attracts tourists and businesses... and will contribute to a culture change where LGBTQ+ people will feel accepted and supported", Panyaphon said.

• The ruling Georgian Dream party has prepared a package of bills that restrict the rights of LGBT people and will introduce it to parliament. In particular, the documents include a draft law "On Family Values and Protection of Minors", as well as amendments to 18 laws.