Tasmania will become the third Australian jurisdiction to legalise voluntary assisted dying after the legislation passed the state's upper house.
Legislative Council members supported the End of life Choices (Voluntary Assisted Dying) Bill late on Tuesday night, approving amendments from the lower house.
The lower house had backed the bill in 16-6 vote on March 5, with Premier Peter Gutwein among a handful of Liberals to support it.
The upper house, where the legislation was introduced, had already passed the bill unanimously late last year.
The new laws are expected to become active in Tasmania in 18 months.
It is the fourth time proposed euthanasia laws have come before Tasmania's parliament.
Similar laws exist in Western Australia and Victoria.